Resource Type

Radiation Damage to Vacuum Chamber Walls (open access)

Radiation Damage to Vacuum Chamber Walls

"The problem of radiation derange to the walls of two types of vacuum chamber for the 6 Bev Cambridge Electron Accelerator was studied. Radiation damage may arise from the synchrotron radiation and from electrons which are not accepted at injection. The synchrotron radiation produces a large amount of secondary x radiation which is isotropic, and therefore complicates the arrangement of internal shielding. The 20 Mev electrons from the lines cannot be attenuated by shielding. It is concluded that dosages of the order of 10/sup 7/ rad/day near the inflector are unavoidable. This would exceed the allowable dosage for a tube made by cementing a stainless steel liner to supporting ribs, and also exceed the test dosages (so far as we know) for alumina ceramics."
Date: September 10, 1957
Creator: Stearns, Brenton
System: The UNT Digital Library
Leaching and Precipitation Tests on Grants Ores (open access)

Leaching and Precipitation Tests on Grants Ores

Leaching tests were run on two samples from the Grants area in New Mexico. Uranium extractions of 94 per cent were obtained by leaching Sample 6-1 with solutions containing 240 lbs. of Na2CO3 and 60 lbs. of NaHCO3 per ton and by leaching Sample 6-2 with 270 lbs. of Na2CO3 and 180 lbs. of NaHCO3 per ton. Cyclic tests were completed using caustic precipitation of the leach liquor.
Date: September 10, 1951
Creator: Abrams, Charles S. & George, D'Arcy R.
System: The UNT Digital Library
Operation of the ORNL Graphite Reactor and the Low-Intensity Test Reactor — 1955 LITR Flux Traverses (open access)

Operation of the ORNL Graphite Reactor and the Low-Intensity Test Reactor — 1955 LITR Flux Traverses

The ORNL Graphite Reactor operated very well during 1955. The downtime was low, only 8.6%. The fuel in the bonded slugs did not perform as well in 1955 as in 1954. Much of the trouble was undoubtedly due to growth of slugs which were not beta-transformed. It is known that some slugs had grown over 1/2 in. The automatic central system installed in 1954 continued to operate satisfactorily. The cooling system gave minor trouble when one of the 900-hp fan meters had to be replaced because of shorts in the rotor. The high radiation in the canal was the largest source of trouble. Approximately 55 tons of slugs discharged from the reactor in 1952 was sent to the Metal Recovery Plant. Enough slugs had raptured, due to their long exposure in the canal and reactor, to badly contaminate of water. Most of the contamination was removed by the end of the year, but the radioactivity which had soaked into the canal wells was enough to give high radiation fields. A solution to this problem was being sought at the end of the year. A study is under way on the possibility of increasing the flux of the ORNL Graphite Reactor …
Date: September 10, 1956
Creator: Rupp, A. F. & Cox, J. A.
System: The UNT Digital Library
Quality Standards and Tests for Swaged Fuel Cladding (open access)

Quality Standards and Tests for Swaged Fuel Cladding

The basic process for fabricating a swaged fuel rod is simple, easy to control and inexpensive. A zircaloy tube is filled with uranium dioxide powder, the ends temporarily plugged and the loaded tube is swaged to compact the UO2 powder to the required density. The swaged rod is then cut to length and counterbored and then end cape are welded into each end. After several tests and inspections, nineteen rods which meet the quality standards are assembled into a single fuel element ready for irradiation.
Date: September 10, 1959
Creator: Olson, R. E.
System: The UNT Digital Library
Fretting Corrosion Irradiation Tests (open access)

Fretting Corrosion Irradiation Tests

The Zircaloy-a clad, swaged UOa, 19-rod cluster fuel element for the PRTR was designed to use Zircaloy-a wire spirally wrapped around the fuel rods as spacing members. Such use of unbonded, Zircaloy-a spacers introduced the possibility of fretting corrosion. This paper reports preliminary irradiation tests conducted to determine whether or not such corrosions occurs in this fuel element design.
Date: September 10, 1959
Creator: Millhollen, M. K.
System: The UNT Digital Library
Future Program for the Cern PS and the Brookhaven AGS (open access)

Future Program for the Cern PS and the Brookhaven AGS

The alternating-gradient proton synchrotrons at CERN and Brookhaven are very similar in size, design and in their experimental use. For this reason, collaboration between the groups at CERN and Brookhaven has been close throughout the history of these two machines. For the most part this has taken the form of exchanges of visits of individual machine designers and of high-energy physicists. By 1962, however, it appeared that the reciprocal flow of information was not adequate and a more formal meeting was arranged. This meeting took place at Brookhaven during the week of September 10, 1962. CERN sent a representative group of machine physicists and high-energy physicists. The meeting was attended also by observers from several American high-energy installations. The discussion covered a wide range of topics, from operating characteristics of the machines themselves to future trends in design of experimental equipment. Plans for beam ejection were presented, techniques were described for better use of secondary beams from internal targets, progress was summarized on dc and rf particle separators. and future trends in neutrino experimentation were predicted.
Date: 1962-09-10/1962-09-14
Creator: Blewett, J. P.; Bittner, J. W.; Brown, H. N. & Maschke, A. W.
System: The UNT Digital Library
Graphite Diffusion Length Measurements at Hanford (open access)

Graphite Diffusion Length Measurements at Hanford

A series of diffusion length measurements were carried out on graphite stacks of various constructions in an attempt to resolve the discrepancies between the graphite diffusion lengths measured in the Hanford reactors and that value measured in the Hanford Standard Pile. It was found that the diffusion length of the graphite in the Hanford reactors is in good agreement with the value for the Hanford Standard Pile when corrections are made for the absorption and scattering of neutrons by the aluminum process tubes, and for neutrons streaming in the channels of the reactors.
Date: September 10, 1956
Creator: Richey, C. R. & Block, E.Z.
System: The UNT Digital Library
[Mentor Review of Art Classroom at Shady Brook School by Mentor Stephens] (open access)

[Mentor Review of Art Classroom at Shady Brook School by Mentor Stephens]

A document presents an insightful review conducted by Mentor Stephens on the Art classroom at Shady Brook School. Mentor Stephens evaluates the classroom environment, teaching methodologies, and overall effectiveness of the art education program.
Date: September 10, 1999
Creator: unknown
System: The UNT Digital Library
Analysis of Iron in Thorium, Beryllium, and Cerium (open access)

Analysis of Iron in Thorium, Beryllium, and Cerium

Introduction. the colorimetric determination of iron based on the formation of the colored ferrous-1,10-phenanthroline complex has been used successfully by a number of investigators. In this technical report, its adaptation to the routine determination of iron in cerium, thorium, and beryllium metals and their compounds is described.
Date: September 10, 1945
Creator: Ericson, R. P & Fornefeld, E. J.
System: The UNT Digital Library
[NTIEVA revenue 1990-1994] (open access)

[NTIEVA revenue 1990-1994]

A document outlining the total revenue for the North Texas Institute for Educators on the Visual Arts (NTIEVA) from 1990-1992, and projected revenue from 1993-1994.
Date: September 10, 1992
Creator: unknown
System: The UNT Digital Library
The Synthetic Liquid Fuel Potential of Wyoming/Idaho (open access)

The Synthetic Liquid Fuel Potential of Wyoming/Idaho

Report documenting the suitability of Wyoming and Idaho for plant locations to produce synthetic liquid fuels, based on raw materials, water sources, and local interest.
Date: September 10, 1951
Creator: Ford, Bacon, and Davis
System: The UNT Digital Library
Magnetic Properties of Some Intra-Rare Earth Alloys (open access)

Magnetic Properties of Some Intra-Rare Earth Alloys

Technical report. From Abstract : "Paramagnetic susceptibilities of samarium structure alloys in the systems La-Gd, Nd-Y, Nd-Tm, and Ce-Y were measured from 4.2 - 300°K to determine what effect the formation of this structure has on the magnetic properties of the alloys. Susceptibility maxima were observed in the Nd-Y and Nd-Tm alloys, at 34.5 and 28.5°K, respectively. Slope changes were observed in the curve of 1/x versus T for the La-Gd alloy at 155 and 130°K, and the susceptibility of this alloy remained temperature-independent from 130-7°K. A rather poorly defined region of constant susceptibility was also observed or the Ce-Y alloy, from 26-37°K. Above these transition temperatures, the alloys obeyed the Curie-Weiss law, the susceptibilities of the La-Gd and Ce-Y samples indicating the possibility of electron transfer occurring in these cases."
Date: September 10, 1962
Creator: Roughan, P. E. & Deane, A. H.
System: The UNT Digital Library
A Preliminary Comparison of the Nannoplankton and Net Plankton of the Columbia River (open access)

A Preliminary Comparison of the Nannoplankton and Net Plankton of the Columbia River

Plankton collected from the Columbia River by the net method and by the centrifuge method were compared. The centrifuged plankton (nannoplankton) exceeded the net plankton in weight, in abundance of organisms and in radioactivity. Similar seasonal trends were present in both types of plankton.
Date: September 10, 1953
Creator: Coopey, R. W.
System: The UNT Digital Library
[Herman Lurie's Weekly Report, September 10, 1954] (open access)

[Herman Lurie's Weekly Report, September 10, 1954]

Herman Lurie's weekly report for the sugar market. Details include prices, tons of sugar, distribution, and sellers.
Date: September 10, 1954
Creator: Lurie, Herman
System: The Portal to Texas History
Imperial Sugar Company Estimated Daily Cash Balance: September 10, 1954 (open access)

Imperial Sugar Company Estimated Daily Cash Balance: September 10, 1954

Daily cash report for Imperial Sugar Company including a list of large withdrawls for the months surrounding the date showing the daily expenses and estimated balance for each entry. It also lists scheduled payments for bank loans.
Date: September 10, 1954
Creator: Imperial Sugar Company
System: The Portal to Texas History
Deposit Summary (open access)

Deposit Summary

Deposit summary of $50.00 made on September 10, 2009.
Date: September 10, 2009
Creator: unknown
System: The UNT Digital Library
Preliminary study of the recycling of spent gases from the iodine laser (open access)

Preliminary study of the recycling of spent gases from the iodine laser

A process is proposed for recycling the spent gases from the iodine laser. Using a simplified form of this process, a preliminary estimate of the energy cost to recycle the perfluoroisopropyliodide-argon gas mixture used as the laser medium in the iodine laser was made. If r is defined as the ratio of the recycling energy to the output energy of the laser, a figure of 70 is arrived at for the most optimistic conditions and 160 for the most probable conditions. A major portion of the energy necessary for recycling is consumed in the synthesis of the perfluoroiodide compound. An estimate of the cost to replace the lost perfluoroiodide, if purchased, is from $2.4 to 10 million per year, based on a continuous operation at the 100-kJ laser power level.
Date: September 10, 1976
Creator: Pearson, R. K. (ed.)
System: The UNT Digital Library
Study of neutral mesons decaying into. pi. /sup +/. pi. /sup -/3. gamma. and. pi. /sup +/. pi. /sup -/4. gamma. [Proposed experiment] (open access)

Study of neutral mesons decaying into. pi. /sup +/. pi. /sup -/3. gamma. and. pi. /sup +/. pi. /sup -/4. gamma. [Proposed experiment]

It is proposed to use the Charged and Neutral Spectrometer in Beam 8 to study the reactions ..pi../sup -/p ..-->.. ..pi../sup +/..pi../sup -/3..gamma..n and ..pi../sup -/p ..-->.. ..pi../sup +/..pi../sup -/4..gamma..n at 8.5 GeV/c. Improvements to the spectrometer will allow a data collection rate 4 to 5 times better than achieved for these reactions in E-397. Of particular interest are the radiative decays eta' ..-->.. ..omega gamma.., ..omega.. ..-->.. eta..gamma.., rho ..-->.. eta..gamma..; the decay f ..-->.. ..pi../sup +/..pi../sup -/..pi../sup 0/..pi../sup 0/, in which A/sub 1/..pi.. may occur; the decay A/sub 2/ ..-->.. ..omega pi../sup +/..pi../sup -/, in connection with an isoscalar under the A/sub 2/; study/search for B/sup 0/ and delta/sup 0/; rare final states such as eta eta, eta..omega.., eta'..pi../sup 0/ and eta'eta.
Date: September 10, 1976
Creator: Edwards, K. W.; Legacey, D. & Brockman, P.
System: The UNT Digital Library
Texas Turkey Poults: For Week Ending September 5, 1981 (open access)

Texas Turkey Poults: For Week Ending September 5, 1981

Weekly report of the Texas Crop and Livestock Reporting Service on turkey poult numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks during two years for turkey eggs set and poults hatched.
Date: September 10, 1981
Creator: Texas Crop and Livestock Reporting Service
System: The Portal to Texas History
Comprehensive Review of Applicable Supercritical Fluid Extraction Research (open access)

Comprehensive Review of Applicable Supercritical Fluid Extraction Research

This comprehensive supercritical fluid extraction (SFE) literature review is divided into three major sections. The first section describes the electronic literature search details including the abstract service used and the different topics searched. This section also contains an overview of the seven search topics that yielded relevant references along with a brief synopsis of the most significant literature citations. These seven groupings are (1) chemical warfare agents; (2) explosives; (3) hazardous chemicals; (4) poisons, toxins and mycotoxins; (5) toxic (lethal) chemical and toxicants; (6) pesticides in soil; and (7) pesticides from plant and animal tissues. The second section contains tables of each of these groupings. Each of the seven tables contains entries for individual literature citations listed along with the specific compounds or compound classes that are addressed. The third section refers to the abstracts used in the literature search.
Date: September 10, 2001
Creator: Harvey, Scott; Wright, Cherylyn W. & Wright, Bob W.
System: The UNT Digital Library
RPF: An Extensible, Cross-Platform, Binary File Format for Radiation Physics Data (open access)

RPF: An Extensible, Cross-Platform, Binary File Format for Radiation Physics Data

Lawrence Livermore National Laboratory's Radiation Technology Group (RTG) uses a number of computer codes for simulation and analysis of radiation data. The number of incompatible data formats that these data presented themselves in have continued to multiply. In the 1980's a Common Data Format (CDF, see Appendix A) was devised for internal use by the RTG. This format represented a single gamma-ray spectrum as ASCII energy/count pairs preceded by an ASCII header. The ASCII representation of the data assured that it was compatible on any computing platform and this format is still in use. In the mid 1990's it became apparent that instrument systems of greater complexity would demand a file format of larger capacity to support systems then on the drawing board, including networks of sensors collecting time series of gamma-ray spectra. These systems were in the planning stage and defined data structures were not available. It became apparent that a new storage format for nuclear measurements data would be needed and it would have to be flexible and extensible to accommodate the requirements of systems of the future. As part of an LDRD, we began to investigate what others were doing, especially in the high-energy physics community, to …
Date: September 10, 2002
Creator: Ham, Cheryl L.
System: The UNT Digital Library
Annual progress report. [Nonlinear saturation of instabilities; linear stability theory for tokamaks] (open access)

Annual progress report. [Nonlinear saturation of instabilities; linear stability theory for tokamaks]

Research has been carried out in two broad areas, nonlinear saturation of instabilities in collisionless plasma and incorporation of important physical phenomena into linear stability theories appropriate to Tokamaks. The nonlinear work has established a general technique for dealing with the singular functions which arise and is now applied to the collisionless drift, the dissipative trapped electron in linear geometry and the drift cyclotron loss cone. Multimode problems are under study. The linear theory includes the influence of resonant electrons on the trapped electron instability in sheared magnetic fields. A further calculation includes the collisional broading of the untrapped electron response. Finally a general technique is developed for calculations when there are collisions and the product of the poloidal wave number and ion gyroradium is not necessarily small.
Date: September 10, 1976
Creator: Simon, A.
System: The UNT Digital Library
Switchyard Enclosure Bolted Connection Calculations (open access)

Switchyard Enclosure Bolted Connection Calculations

The maximum deflection and the maximum stress were calculated for the bolted connection of the flanges. The stress is a result from both the air pressure inside the beam enclosures as well as the force from the compressed p-gasket. The results of the calculations are shown for each of the four beam enclosure types. The Safety Factor was calculated using a yield strength of 41 ksi. Calculations were also performed on the M8 bolts that are used to connect the flanges. Both the internal air pressure and the force of the compressed p-gasket induce the normal stress. The shear stress is from the weight of the unsupported beam enclosure. The calculated maximum stresses and the resulting safety factors are given. The safety factors were calculated using the maximum shear stress hypothesis and a yield strength of 30 ksi.
Date: September 10, 2001
Creator: Patton, Becky
System: The UNT Digital Library
Relative Hazard and Risk Measure Calculation Methodology Rev 1 (open access)

Relative Hazard and Risk Measure Calculation Methodology Rev 1

Documention of the methodology used to calculate relative hazard and risk measure results for the DOE complex wide risk profiles. This methodology is used on major site risk profiles.
Date: September 10, 2000
Creator: Stenner, Robert D.; White, Michael K.; Strenge, Dennis L.; Aaberg, Rosanne L. & Andrews, William B.
System: The UNT Digital Library