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Conceptual Decontamination and Decommissioning Plan for the Waste Isolation Pilot Plant (open access)

Conceptual Decontamination and Decommissioning Plan for the Waste Isolation Pilot Plant

The Conceptual Decontamination and Decommissioning Plan (D&D) was developed as a concept for progressing from the final actions of the Disposal Phase, through the Decontamination and Decommissioning Phase, and into the initiation of the Long-Term Monitoring Phase. This plan was written in a manner that coincides with many of the requirements specified in DOE Order 5820.2A. Radioactive Waste Management; ASTM El 167 87, Standard Guide for Radiation Protection Program for Decommissioning Operations; and other documents listed in Attachment 3 of the D&D Plan. However, this conceptual plan does not meet all of the requirements necessary for a Decontamination and Decommissioning plan necessary for submission to the U.S. Congress in accordance with the Land Withdrawal Act (P.L. 102-579). A complete D&D plan that will meet the requirements of all of these documents and of the Land Withdrawal Act will be prepared and submitted to Congress by October 1997.
Date: January 30, 1995
Creator: Westinghouse Electric Corporation Waste Isolation Division, now Washington TRU Solutions LLC
Object Type: Report
System: The UNT Digital Library
Summary Report for Bureau of Fisheries Stream Habitat Surveys : Umatilla, Tucannon, Asotin, and Grande Ronde River Basins, 1934-1942, Final Report. (open access)

Summary Report for Bureau of Fisheries Stream Habitat Surveys : Umatilla, Tucannon, Asotin, and Grande Ronde River Basins, 1934-1942, Final Report.

This document contains summary reports of stream habitat surveys, conducted in the Umatilla and Grande Ronde River basins, by the Bureau of Fisheries (BOF, now National Marine Fisheries Service) from 1938-1942. These surveys were part of a larger project to survey streams in the Columbia River basin that provided, or had provided, spawning and rearing habitat for salmon and steelhead (Rich, 1948). The purpose of the survey was, as described by Rich, 'to determine the present condition of the various tributaries with respect to their availability and usefulness for the migration, breeding, and rearing of migratory fishes'. Current estimates of the loss of anadromous fish habitat in the Columbia River Basin are based on a series of reports published from 1949-1952 by the U.S. Fish and Wildlife Service. The reports were brief, qualitative accounts of over 5000 miles of stream surveys conducted by the BOF from 1934-1946 (Bryant, 1949; Bryant and Parkhurst, 1950; Parkhurst, 1950a-c; Parkhurst et al 1950). Despite their brevity, these BOF reports have formed the basis for estimating fish habitat losses and conditions in the Columbia River Basin (Fulton, 1968, 1970; Thompson, 1976; NPPC, 1986). Recently, the field notebooks from the BOF surveys were discovered. The data …
Date: January 1, 1995
Creator: McIntosh, Bruce A.; Clark, Sharon E. & Sedell, James R.
Object Type: Report
System: The UNT Digital Library
Summary Report for Bureau of Fisheries Stream Habitat Surveys : Clearwater, Salmon, Weiser, and Payette River Basins, 1934-1942, Final Report. (open access)

Summary Report for Bureau of Fisheries Stream Habitat Surveys : Clearwater, Salmon, Weiser, and Payette River Basins, 1934-1942, Final Report.

This document contains summary reports of stream habitat surveys, conducted in Idaho, by the Bureau of Fisheries (BOF, now National Marine Fisheries Service) from 1938-1942.. These surveys were part of a larger project to survey streams in the Columbia River basin that provided, or had provided, spawning and rearing habitat for salmon and steelhead (Rich, 1948). The purpose of the survey was, as described by Rich, 'to determine the present condition of the various tributaries with respect to their availability and usefulness for the migration, breeding, and rearing of migratory fishes'. The Idaho portion of the survey consisted of extensive surveys of the Clearwater, Salmon, Weiser, and Payette River Subbasins. Current estimates of the loss of anadromous fish habitat in the Columbia River Basin are based on a series of reports published from 1949-1952 by the U.S. Fish and Wildlife Service. The reports were brief, qualitative accounts of over 5000 miles of stream surveys conducted by the BOF from 1934-1946 (Bryant, 1949; Bryant and Parkhurst, 1950; Parkhurst, 1950a-c; Parkhurst et al., 1950). Despite their brevity, these BOF reports have formed the basis for estimating fish habitat losses and conditions in the Columbia River Basin (Fulton, 1968, 1970; Thompson, 1976; NPPC, …
Date: January 1, 1995
Creator: McIntosh, Bruce A.; Clark, Sharon E. & Sedell, James R.
Object Type: Report
System: The UNT Digital Library
Summary Report for Bureau of Fisheries Stream Habitat Surveys : Willamette River Basin, 1934-1942, Final Report. (open access)

Summary Report for Bureau of Fisheries Stream Habitat Surveys : Willamette River Basin, 1934-1942, Final Report.

This document contains summary reports of stream habitat-surveys, conducted in the Willamette River basin, by the Bureau of Fisheries (BOF, now National Marine Fisheries Service) from 1934-1942. These surveys were part of a larger project to survey streams in the Columbia River basin that provided, or had provided, spawning and rearing habitat for salmon and steelhead (Rich, 1948). The purpose of the survey was, as described by Rich, 'to determine the present condition of the various tributaries with respect to their availability and usefulness for the migration, breeding, and rearing of migratory fishes'. Current estimates of the loss of anadromous fish habitat in the Columbia River Basin are based on a series of reports published from 1949-1952 by the U.S. Fish and Wildlife Service. The reports were brief, qualitative accounts of over 5000 miles of stream surveys conducted by the BOF from 1934-1946 (Bryant, 1949; Bryant and Parkhurst, 1950; Parkhurst, 1950a-c; Parkhurst et al., 1950). Despite their brevity, these BOF reports have formed the basis for estimating fish habitat losses and conditions in the Columbia River Basin (Fulton, 1968, 1970; Thompson, 1976; NPPC, 1986). Recently, the field notebooks from the BOF surveys were discovered. The data is now archived and …
Date: January 1, 1995
Creator: McIntosh, Bruce A.; Clark, Sharon E. & Sedell, James R.
Object Type: Report
System: The UNT Digital Library
Native Hawaiian Ethnographic Study for the Hawaii Geothermal Project Proposed for Puna and South Maui (DRAFT) (open access)

Native Hawaiian Ethnographic Study for the Hawaii Geothermal Project Proposed for Puna and South Maui (DRAFT)

None
Date: January 1, 1995
Creator: Matsuoka, Jon K.; McGregor, Davianna Pomaika'i; Minerbi, Luciano; Kelly, Marion & Barney-Campbell, Noenoe
Object Type: Report
System: The UNT Digital Library
COMPRESSED AIR SYSTEM/CONDENSATE RECEIVER TANK FOUNDATIONS (open access)

COMPRESSED AIR SYSTEM/CONDENSATE RECEIVER TANK FOUNDATIONS

The purpose of this analysis is to design structural foundations for the Compressed Air System (CAS), and the Condensate Receiver Tank.
Date: January 18, 1995
Creator: Gomez, M.
Object Type: Report
System: The UNT Digital Library
North Portal Fuel Storage System Fire Hazard Analysis-ESF Surface Design Package ID (open access)

North Portal Fuel Storage System Fire Hazard Analysis-ESF Surface Design Package ID

The purpose of the fire hazard analysis is to comprehensively assess the risk from fire within the individual fire areas. This document will only assess the fire hazard analysis within the Exploratory Studies Facility (ESF) Design Package ID, which includes the fuel storage system area of the North Portal facility, and evaluate whether the following objectives are met: 1.1.1--This analysis, performed in accordance with the requirements of this document, will satisfy the requirements for a fire hazard analysis in accordance with U.S. Department of Energy (DOE) Order 5480.7A. 1.1.2--Ensure that property damage from fire and related perils does not exceed an acceptable level. 1.1.3--Provide input to the ESF Basis For Design (BFD) Document. 1.1.4 Provide input to the facility Safety Analysis Report (SAR) (Paragraph 3.8).
Date: January 18, 1995
Creator: Ruonavaara, N.M.
Object Type: Report
System: The UNT Digital Library
Life-Cycle Cost Analysis for Condensate Receiving System (open access)

Life-Cycle Cost Analysis for Condensate Receiving System

The purpose of this analysis is to determine the life-cycle costs of several options relevant to the Condensate Removal System serving the Compressed Air System (CAS) at the Yucca Mountain Site Characterization Project (YMP) Exploratory Studies Facility (ESF). The best option (least present value) will be selected as the preferred configuration to construct.
Date: January 18, 1995
Creator: Mellen, C
Object Type: Report
System: The UNT Digital Library
Scale-4 Analysis of Pressurized Water Reactor Critical Configurations: Volume 3-Surry Unit 1 Cycle 2 (open access)

Scale-4 Analysis of Pressurized Water Reactor Critical Configurations: Volume 3-Surry Unit 1 Cycle 2

The requirements of ANSI/ANS 8.1 specify that calculational methods for away-from-reactor criticality safety analyses be validated against experimental measurements. If credit for the negative reactivity of the depleted (or spent) fuel isotopics is desired, it is necessary to benchmark computational methods against spent fuel critical configurations. This report summarizes a portion of the ongoing effort to benchmark away-from-reactor criticality analysis methods using selected critical configurations from commercial pressurized-water reactors. The analysis methodology selected for all the calculations in this report is based on the codes and data provided in the SCALE-4 code system. The isotopic densities for the spent fuel assemblies in the critical configurations were calculated using the SAS2H analytical sequence of the SCALE-4 system. The sources of data and the procedures for deriving SAS2H input parameters are described in detail. The SNIKR code module was used to extract the necessary isotopic densities from the SAS2H results and to provide the data in the format required by the SCALE criticality analysis modules. The CSASN analytical sequence in SCALE-4 was used to perform resonance processing of the cross sections. The KENO V.a module of SCALE-4 was used to calculate the effective multiplication factor (k{sub eff}) of each case. The SCALE-4 …
Date: January 1, 1995
Creator: Bowman, S.M.
Object Type: Report
System: The UNT Digital Library
Scale-4 Analysis of Pressurized Water Reactor Critical Configurations: Volume 4-Three Mile Island Unit 1 Cycle 5 (open access)

Scale-4 Analysis of Pressurized Water Reactor Critical Configurations: Volume 4-Three Mile Island Unit 1 Cycle 5

The requirements of ANSI/ANS-8.1 specify that calculational methods for away-from-reactor criticality safety analyses be validated against experimental measurements. If credit is to be taken for the reduced reactivity of burned or spent fuel relative to its original ''fresh'' composition, it is necessary to benchmark computational methods used in determining such reactivity worth against spent fuel reactivity measurements. This report summarizes a portion of the ongoing effort to benchmark away-from-reactor criticality analysis methods using relevant and well-documented critical configurations from commercial pressurized water reactors. The analysis methodology utilized for all calculations in this report is based on the modules and data associated with the SCALE-4 code system. Isotopic densities for spent fuel assemblies in the core were calculated using the SCALE-4 SAS2H analytical sequence. The sources of data and the procedures for deriving SAS2H input parameters are described in detail. The SNIKR code family was used to extract the necessary isotopic densities from SAS2H results and to provide the data in the format required for SCALE criticality analysis modules. The CSASN analytical sequence in SCALE-4 was used to perform resonance processing of cross sections. The KENO V.a module of SCALE-4 was used to calculate the effective multiplication factor (k{sub eff}) for …
Date: January 1, 1995
Creator: DeHart, M.D.
Object Type: Report
System: The UNT Digital Library
Habitat Evaluation Procedures (HEP) Report : Vancouver Lowlands Shillapoo Wildlife Area, 1994-1995 Technical Report. (open access)

Habitat Evaluation Procedures (HEP) Report : Vancouver Lowlands Shillapoo Wildlife Area, 1994-1995 Technical Report.

This project was conducted as part of a comprehensive planning effort for the Vancouver Lowlands project area. The study was funded by The Bonneville Power Administration (BPA) and carried out by the Washington Department of Fish and Wildlife (WDFW). The Vancouver Lowlands is considered an area of high priority by WDFW and is being considered as a potential site for wildlife mitigation activities by BPA. The objectives of this study were to collect baseline information and determine current habitat values for the study area. A brief discussion of potential future management and a proposed listing of priorities for habitat protection are found near the end of this report. This report is a companion to a programmatic management plan being drafted for the area which will outline specific, management programs to improve habitat conditions based, in part, on this study. The following narratives, describing limiting habitat variables, carry recurring themes for each indicator species and habitat type. These recurring variables that limited habitat value include: Waterbodies that lack emergent and submerged vegetation; forest areas that lack natural shrub layers; a predominance of non-hydrophytic and less desirable non-native plants where shrubs are present; a general lack of cover for ground nesting and …
Date: January 1, 1995
Creator: Calkins, Brian; Anderson, Eric & Ashley, Paul
Object Type: Report
System: The UNT Digital Library
Engineering Technology Division Long-Range Plan, 1991--1995 (open access)

Engineering Technology Division Long-Range Plan, 1991--1995

This Engineering Technology Division Long-Range Plan is a departure from planning processes of the past. About a year ago we decided to approach our strategic planning in a very different way. With this plan we complete the first phase of a comprehensive process that has involved most of the Division staff. Through a series of brainstorming''meetings, we have accumulated a wealth of ideas. By this process, we have been able to identify our perceived strengths and weaknesses and to propose very challenging goals for the future. Early on in our planning, we selected two distinct areas where we desire changes. First, we want to pursue program development in a much more structured and dynamic manner: deciding what we want to do, developing plans, and providing the resources to follow through. Second, we want to change the way that we do business by developing more effective ways to work together within the Division and with the important groups that we interact with throughout Energy Systems. These initiatives are reflected in the plan and in related actions that the Division is implementing. The ETD mission is to perform research, development, conceptual design, analysis, fabrication, testing, and system demonstration of technology essential for …
Date: January 1, 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Orientation selection and microstructural evolution of epitaxial platinum films on (001) magnesium oxide (open access)

Orientation selection and microstructural evolution of epitaxial platinum films on (001) magnesium oxide

Thin platinum films were deposited at several different deposition rates and with varying thickness on (001)-cut MgO single crystal substrates by electron beam evaporation. A mixture of two epitaxial Pt orientations were detected in the films by X-ray diffraction and planar ion channeling experiments: (001)[100]Pt // (001)[100]MgO (the [open quotes]cube-on-cube[close quotes] orientation) and (111)[110]Pt // (001)[110]MgO. The effect of deposition rate on film orientation indicated the (111)Pt orientation was preferred under conditions of high driving force for nucleation. The volume fraction of the films occupied by the (111) orientation increased with nominal film thickness, at a constant substrate temperature and deposition rate. This result indicates crystallites having the (111)Pt orientation grew more quickly following nucleation than the (001). The mosaic spread of the Pt orientation decreased markedly as the nominal film thickness increased from [approximately] 1.5 nm (isolated islands) to 20 nm (continuous film).
Date: January 1, 1995
Creator: McIntyre, P.C.; Maggiore, C.J. & Natasi, M.
Object Type: Article
System: The UNT Digital Library
Rapid thermal processing of high-efficiency silicon solar cells with controlled in-situ annealing (open access)

Rapid thermal processing of high-efficiency silicon solar cells with controlled in-situ annealing

Silicon solar cell efficiencies of 17.1%, 16.4%, 14.8%, and 14.9% have been achieved on FZ, Cz, multicrystalline (mc-Si), and dendritic web (DW) silicon, respectively, using simplified, cost-effective rapid thermal processing (RTP). These represent the highest reported efficiencies for solar cells processed with simultaneous front and back diffusion with no conventional high-temperature furnace steps. Appropriate diffusion temperature coupled with the added in-situ anneal resulted in suitable minority-carrier lifetime and diffusion profiles for high-efficiency cells. The cooling rate associated with the in-situ anneal can improve the lifetime and lower the reverse saturation current density (J{sub 0}), however, this effect is material and base resistivity specific. PECVD antireflection (AR) coatings provided low reflectance and efficient front surface and bulk defect passivation. Conventional cells fabricated on FZ silicon by furnace diffusions and oxidations gave an efficiency of 18.8% due to greater short wavelength response and lower J{sub 0}.
Date: January 1, 1995
Creator: Doshi, P.; Rohatgi, A.; Ropp, M.; Chen, Z.; Ruby, D. & Meier, D. L.
Object Type: Article
System: The UNT Digital Library
Some lessons learned from the DOE site operator program (open access)

Some lessons learned from the DOE site operator program

Performance of electric vehicles (EVs) is being studied in an ongoing Site Operator Program, as part of the Electric and Hybrid Vehicle Program supported by the U.S. Department of Energy (DOE). More than 200 EVs are being operated by Site Operators in various geographical and climatic regions of the United States. Cold-weather operation of EVs is of particular interest. As expected, low temperatures affect a battery`s ability to accept a charge, which decreases EV range and increases operating costs. Battery types other than lead-acid are being evaluated such as nickel-iron, gelled electrolyte lead-acid, nickel-cadmium, and sodium-sulfur. Also, improved methods of collecting EV performance data are being implemented, thermal management systems are being tested, and a prototype ultracapacitor is being tested as a possible alternative to conventional batteries.
Date: January 1, 1995
Creator: Warren, J. F. & Helton, R. A.
Object Type: Article
System: The UNT Digital Library
Dynamic and quasi-static simulation and analysis of the plutonium oxide/metal containers subject to 30-foot dropping (open access)

Dynamic and quasi-static simulation and analysis of the plutonium oxide/metal containers subject to 30-foot dropping

This analysis of the plutonium oxide/metal storage containers is in support of the design and testing project The results from the dynamic analysis show some important facts that have not been considered before. The internal bagless transfer can will have higher stress than the primary container. The quasi-static analysis provides a conservative solution. In both vertical upright drop (dynamic) and inclined upside down drop (quasi-static) the containers are structurally sound.
Date: January 1, 1995
Creator: Gong, C. & Miller, R. F.
Object Type: Article
System: The UNT Digital Library
Hot-ion Bernstein wave with large k{sub parallel} (open access)

Hot-ion Bernstein wave with large k{sub parallel}

The complex roots of the hot plasma dispersion relation in the ion cyclotron range of frequencies have been surveyed. Progressing from low to high values of perpendicular wave number k{perpendicular} we find first the cold plasma fast wave and then the well-known Bernstein wave, which is characterized by large dispersion, or large changes in k{perpendicular} for small changes in frequency or magnetic field. At still higher k{perpendicular} there can be two hot plasma waves with relatively little dispersion. The latter waves exist only for relatively large k{parallel}, the wave number parallel to the magnetic field, and are strongly damped unless the electron temperature is low compared to the ion temperature. Up to three mode conversions appear to be possible, but two mode conversions are seen consistently.
Date: January 1, 1995
Creator: Ignat, D. W. & Ono, M.
Object Type: Report
System: The UNT Digital Library
Work plan for upgrading the 241-A-701 compressed air system and motor control center. Revision 1 (open access)

Work plan for upgrading the 241-A-701 compressed air system and motor control center. Revision 1

This work plan will outline the responsibilities associated with the 241-A-701 Compressed Air System (CAS) and Motor Control Center (MCC) upgrades. All activities required to design, install, test, and operate the modified systems are addressed in this document. Upgrades Technical Support (UTS) of TWRS Engineering is responsible for the completion of all tasks associated with this upgrade. UTS will coordinate the upgrade activities, and ensure all tasks are successfully completed on or before the scheduled dates. The primary objective of the 241-A-701 Compressor and MCC Upgrade is to provide a reliable source of process and instrument compressed air to the A, AX, AY, and AZ tank farms.
Date: January 17, 1995
Creator: Carpenter, K. E.
Object Type: Report
System: The UNT Digital Library
K Basin spent fuel sludge treatment alternatives study. Volume 1, Regulatory options (open access)

K Basin spent fuel sludge treatment alternatives study. Volume 1, Regulatory options

Approximately 2100 metric tons of irradiated N Reactor fuel are stored in the KE and KW Basins at the Hanford Site, Richland, Washington. Corrosion of the fuel has led to the formation of sludges, both within the storage canisters and on the basin floors. Concern about the degraded condition of the fuel and the potential for leakage from the basins in proximity to the Columbia River has resulted in DOE`s commitment in the Tri-Party Agreement (TPA) to Milestone M-34-00-T08 to remove the fuel and sludges by a December 2002 target date. To support the planning for this expedited removal action, the implications of sludge management under various scenarios are examined. Volume 1 of this two-volume report describes the regulatory options for managing the sludges, including schedule and cost impacts, and assesses strategies for establishing a preferred path.
Date: January 1, 1995
Creator: Beary, M. M.; Honekemp, J. R. & Winters, N.
Object Type: Report
System: The UNT Digital Library
Project 93L-EWL-097, fire alarm system improvements, 300 Area (open access)

Project 93L-EWL-097, fire alarm system improvements, 300 Area

This document contains the Acceptance Test Procedure (ATP) which will demonstrate that the modifications to the Fire Protection systems in the 338 Building function as intended. The ATP will test the fire alarm control panel, flow alarm pressure switch, post indicator valve tamper switch, heat detectors, flow switches, and fire alarm signaling devices.
Date: January 1, 1995
Creator: Scott, M. V.
Object Type: Report
System: The UNT Digital Library
DOE`s perspective: Reaching success by standing on a three legged stool (open access)

DOE`s perspective: Reaching success by standing on a three legged stool

Gridlock, inertia, conflict, outrage, bureaucracy, obstruction, media sensationalizing, courts, and politicians. These are the things that characterize any attempt to implement a public policy today. It is worse today than it has ever been because the middle has dropped out of public opinion. We have today no consensus of public values. At Fernald, we have come to recognize that in order to achieve any success we must first build a public consensus about what success will look like. We do this through a three-part approach we call the three legged stool. It includes public information, management involvement, and person-to-person communication. Each of these elements is essential.
Date: January 31, 1995
Creator: Hamric, J. P. & Morgan, K. L.
Object Type: Article
System: The UNT Digital Library
Environmental Measurement-While-Drilling system for real-time field screening of contaminants (open access)

Environmental Measurement-While-Drilling system for real-time field screening of contaminants

Sampling during environmental drilling is essential to fully characterize the spatial distribution and migration of near surface contaminants. However, the analysis of these samples is not only expensive, but can take weeks or months when sent to an off-site laboratory. In contrast, measurement-while-drilling (MWD) screening capability could save money and valuable time by quickly distinguishing between contaminated and uncontaminated areas. Real-time measurements provided by a MVM system would enable on-the-spot decisions to be made regarding sampling strategies, enhance worker safety, and provide the added flexibility of being able to ``steer`` the drill bit in or out hazardous zones. During measurement-while-drilling, down-hole sensors are located behind the drill bit and linked by a rapid data transmission system to a computer at the surface. As drilling proceeds, data are collected on the nature and extent of the subsurface contamination in real-time. The down-hole sensor is a Geiger-Mueller tube (GMT) gamma radiation detector. In addition to the GMT signal, the MWD system monitors these required down-hole voltages and two temperatures associated with the detector assembly. The Gamma Ray Detection System (GRDS) and electronics package are discussed in as well as the results of the field test. Finally, our conclusions and discussion of future …
Date: January 1, 1995
Creator: Lockwood, G. J.; Normann, R. A.; Bishop, L. B.; Floran, R. J. & Williams, C. V.
Object Type: Article
System: The UNT Digital Library
Viscous fingers in superheated geothermal systems (open access)

Viscous fingers in superheated geothermal systems

In this paper we investigate the physical controls upon the rate of vaporization of liquid as it is injected into a porous layer containing superheated vapor. We develop a simple model of the process and show that if liquid is injected at a relatively high rite, a small fraction of the liquid vaporizes and the porous layer becomes filled with hot liquid. In contrast, at low rates of injection a large fraction of the liquid may vaporize. We also describe a new and fundamental instability that can develop at a migrating liquid-vapour interface if the rite of injection is sufficiently small. This phenomenon is manifest in the form of liquid fingers growing from a liquid-vapour interface and is investigated through the use of analytical, experimental and numerical techniques.
Date: January 1, 1995
Creator: Fitzgerald, S. D.; Woods, A. W. & Shook, M.
Object Type: Article
System: The UNT Digital Library
Shock Compression and Expansion in Central Collisions (open access)

Shock Compression and Expansion in Central Collisions

Physics of central symmetric reactions of heavy nuclei, in the beam energy range from few tens of MeV to a couple of GeV per nucleon, is discussed. Within transport simulations, it is shown that shock fronts perpendicular to the beam axis form in the head-on reactions. The fronts propagate into projectile and target and they separate hot compressed matter from normal matter. With an increase of the impact parameter, the angle of inclination of fronts relative to the beam axis decreases, and in-between the fronts a weak tangential discontinuity develops. Hot matter exposed to the vacuum in directions perpendicular to the shock motion (and parallel to fronts), starts to expand sideways, early within reactions. Expansion in the direction of shock motion follows, after the shocks traverse nuclei, but due to the delay does not acquire same strength. Expansion affects angular distributions and mean-energy components, and further shapes of spectra and mean energies of different particles emitted into any one direction, and also particle yields. Both the anisotropy in the expansion and a collective motion associated with the weak discontinuity, affect the magnitude of sideward flow within reaction plane. Differences in mean particle energy components in and out of the reaction …
Date: January 1, 1995
Creator: Danielewicz, P.
Object Type: Report
System: The UNT Digital Library