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1-D Van der Waals Foams Heated by Ion Beam Energy Deposition
One dimensional simulations of various initial average density aluminum foams (modeled as slabs of solid metal separated by low density regions) heated by volumetric energy deposition are conducted with a Lagrangian hydrodynamics code using a van der Waals equation of tate (EOS). The resulting behavior is studied to facilitate the design of future warm dense matter (WDM) experiments at LBNL. In the simulations the energy deposition ranges from 10 to 30 kJ/g and from 0.075 to 4.0 ns total pulse length, resulting in temperatures from approximately 1 o 4 eV. We study peak pressures and temperatures in the foams, expansion velocity, and the phase evolution. Five relevant time scales in the problem are identified. Additionally, we present a method for characterizing the level of inhomogeneity in a foam target as it is heated and the time it takes for a foam to homogenize.
Date:
December 23, 2009
Creator:
Zylstra, A. B.; Barnard, J. J. & More, R. M.
Object Type:
Article
System:
The UNT Digital Library
A 3-dimensional theory of free electron lasers
In this paper, we present an analytical three-dimensional theory of free electron lasers. Under several assumptions, we arrive at an integral equation similar to earlier work carried out by Ching, Kim and Xie, but using a formulation better suited for the initial value problem of Coherent Electron Cooling. We use this model in later papers to obtain analytical results for gain guiding, as well as to develop a complete model of Coherent Electron Cooling.
Date:
August 23, 2010
Creator:
Webb, S. D.; Wang, G. & Litvinenko, V. N.
Object Type:
Article
System:
The UNT Digital Library
6 GeV light source project cost estimating procedure
To maintain uniformity in estimating the cost requirements of the various components of the 6 GeV Light Source, the following procedure will be used by all the task groups. The procedure uses a Work Breakdown Structure (VBS) to break down the project into manageable, easy to estimate, components. The project is first broken down into major tasks or categories. Then each major division is continuously subdivided until the desired level of detail is achieved. This can be shown best by using the example of the WBS of the Aladdin Upgrade Project, excerpts of which are included in Appendix A.
Date:
October 23, 1985
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
An 8-Foot Axisymmetrical Fixed Nozzle for Subsonic Mach Numbers Up to 0.99 and for a Supersonic Mach Number of 1.2
From Introduction: "This paper, which should be of interest to those concerned with transonic wind tunnels, covers the design and operating characteristics of the nozzle."
Date:
February 23, 1950
Creator:
Ritchie, Virgil S.; Wright, Ray H. & Tulin, Marshall P.
Object Type:
Report
System:
The UNT Digital Library
8-oxoguainine enhances bending of DNA that favors binding of glycosylases
Molecular dynamics (MD) simulations were carried out on the DNA oligonucleotide GGGAACAACTAG:CTAGTTGTTCCC in its native form and with guanine in the central G19:C6 base pair replaced by 8-oxoguanine (8oxoG). A box of explicit water molecules was used for solvation and Na+ counterions were added to neutralize the system. The direction and magnitude of global bending were assessed by a technique used previously to analyze simulations of DNA containing a thymine dimer. The presence of 8oxoG did not greatly affect the magnitude of DNA bending; however, bending into the major groove was significantly more probable when 8oxoG replaced G19. Crystal structures of glycosylases bound to damaged-DNA substrates consistently show a sharp bend into the major groove at the damage site. We conclude that changes in bending dynamics that assist the formation of this kink are a part of the mechanism by which glycosylases of the base excision repair pathway recognize the presence of 8oxoG in DNA.
Date:
April 23, 2003
Creator:
Miller, John H.
Object Type:
Article
System:
The UNT Digital Library
9-11 Commission Hearing #2, May 23, 2003, Part 1
Recording of the second public hearing held by the National Commission on Terrorist Attacks upon the United States on May 23 in Washington, D.C. This hearing addresses four topics, which include the commission mandate and objectives, intelligence oversight and the joint inquiry, affected constituencies, and the state of civil aviation security on September 11th. This section includes the panel on civil aviation security, with testimony from Norman Mineta, Major General Craig McKinley, and Lieutenant General Mike Canavan on the attacks and the response to the 9/11 attacks.
Date:
May 23, 2003
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #2, May 23, 2003, Part 2
Recording of the second public hearing held by the National Commission on Terrorist Attacks upon the United States on May 23, 2003 in Washington, D.C. This hearing addresses four topics, which include the commission mandate and objectives, intelligence oversight and the joint inquiry, affected constituencies, and the state of civil aviation security on September 11th. This section concludes the panel on civil aviation security, with testimony from Stephen McHale, Major General O.K. Steele, and Mary Schiavo on reforming civil aviation security.
Date:
May 23, 2003
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #8, March 23, 2004, Part 1
Recording of the eighth public hearing held by the National Commission on Terrorist Attacks upon the United States on March 23, 2004 at the Hart Senate Office Building in Washington, D.C. The two-day hearing investigated the formulation and conduct of U.S. counterterrorism policy, with particular emphasis on the period from the August 1998 embassy bombings to September 11, 2001. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section includes the staff statement on diplomacy, in addition to the panel on counterterrorism policy with testimony from Madeline K. Albright.
Date:
March 23, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #8, March 23, 2004, Part 2
Recording of the eighth public hearing held by the National Commission on Terrorist Attacks upon the United States on March 23, 2004 at the Hart Senate Office Building in Washington, D.C. The two-day hearing investigated the formulation and conduct of U.S. counterterrorism policy, with particular emphasis on the period from the August 1998 embassy bombings to September 11, 2001. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section continues the panel on counterterrorism policy with testimony from Colin L. Powell and Richard Armitage.
Date:
March 23, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #8, March 23, 2004, Part 3
Recording of the eighth public hearing held by the National Commission on Terrorist Attacks upon the United States on March 23, 2004 at the Hart Senate Office Building in Washington, D.C. The two-day hearing investigated the formulation and conduct of U.S. counterterrorism policy, with particular emphasis on the period from the August 1998 embassy bombings to September 11, 2001. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section continues the panel on counterterrorism policy with testimony from William S. Cohen.
Date:
March 23, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #8, March 23, 2004, Part 4
Recording of the eighth public hearing held by the National Commission on Terrorist Attacks upon the United States on March 23, 2004 at the Hart Senate Office Building in Washington, D.C. The two-day hearing investigated the formulation and conduct of U.S. counterterrorism policy, with particular emphasis on the period from the August 1998 embassy bombings to September 11, 2001. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section concludes the panel on counterterrorism policy with testimony from Donald H. Rumsfeld, Paul Wolfowitz, and Richard Myers.
Date:
March 23, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9/11 Commission Recommendations: Intelligence Budget
This report describes recommendations of the 9/11 Commission as pertains to the intelligence budget.
Date:
October 23, 2004
Creator:
Nicola, Thomas J.
Object Type:
Report
System:
The UNT Digital Library
9/11 Commission Recommendations: The Senate Confirmation Process for Presidential Nominees
On July 22, 2004, the National Commission on Terrorist Attacks Upon the United States, known as the 9/11 Commission, issued its final report, detailing the events up to and including the September 11, 2001 terrorist attacks upon the United States. The 9/11 Commission recommended that the Senate adopt rules requiring hearings and votes to confirm or reject national security nominees within 30 days of their submission at the start of each new presidential administration. Implementing the commission's proposal would involve imposing new restrictions on both the power of committee chairs to control the agenda of their committees and the rights of Senators to delay or block nominations through holds and extended debate. This report discusses in detail this proposal, how it could be implemented, and the potential effects of its implementation.
Date:
March 23, 2005
Creator:
Palmer, Betsy
Object Type:
Report
System:
The UNT Digital Library
A 15-T Pulsed Solenoid for a High-Power Target Experiment
The MERIT experiment, which ran at CERN in 2007, is a proof-of-principle test for a target system that converts a 4-MW proton beam into a high-intensity muon beam for either a neutrino factory complex or a muon collider. The target system is based on a free mercury jet that intercepts an intense proton beam inside a 15-T solenoidal magnetic field. Here, we describe the design and performance of the 15-T, liquid-nitrogen-precooled, copper solenoid magnet.
Date:
June 23, 2008
Creator:
Kirk, H. G.; Efthymiopoulos, I.; Fabich, A.; Haug, F.; Pereira, H.; Titus, P. et al.
Object Type:
Article
System:
The UNT Digital Library
19 mm ballistic range: a potpourri of techniques and recipes
The expansion of ballistic gun range facilities at LLL has introduced state-of-the-art diagnostic techniques to glovebox-enclosed ballistic guns systems. These enclosed ballistic ranges are designed for the study of one- dimensional shock phenomena in extremely toxic material such as plutonium. The extension of state-of-the-art phtographic and interferometric diagnostic systems to glovebox-enclosed gun systems introduces new design boundaries and performance criteria on optical and mechanical components. A technique for experimentally evaluating design proposals is illustrated, and several specific examples (such as, target alignment, collateral shrapnel damage, and soft recovery) are discussed. (auth)
Date:
September 23, 1975
Creator:
Carpluk, G.T.
Object Type:
Article
System:
The UNT Digital Library
25 Process Assistance. For Period of May 2, 1955 to May 13, 1955
None
Date:
May 23, 1955
Creator:
Culler, F L
Object Type:
Report
System:
The UNT Digital Library
40-kV, 25-ms neutral-beam power supply for TMX
Modifications are described to upgrade the neutral-beam power supply for the TMX from 40 kV, 10 ms to 40 kV, 25 ms. The redesign of the accel and suppressor power supplies to achieve separation of the high-voltage and control sections, operation of the arc pulse lines in series, operation of the arc pulse lines in a noisy environment with SCR trigger and crowbar, and modifications to the electrolytic storage banks are discussed.
Date:
September 23, 1977
Creator:
Leavitt, G.A.
Object Type:
Article
System:
The UNT Digital Library
100 Area electrical distribution fault and coordination report
This report documents three-phase and line-to-ground fault values and time overcurrent coordination curves for the electrical utility distribution system located in the 100 Areas. Activities that may improve the coordination of the distribution system have also been identified. An evaluation of system coordination was performed. The results of this evaluation are listed in Appendix B. There are protective devices within the 100 Area distribution system that do not coordinate with one another throughout the Areas. There is also a mis-application of reclosing relays at the 100B Area. The impact of the mis-coordination and incorrect application of reclosing relays is that system selectivity is reduced. Equipment will still be protected against damaging currents, however more equipment will be de-energized than necessary during fault conditions. It is the opinion of the author of this report that the cases of mis-coordination listed above, and in Appendix B, do not significantly degrade the system protection system nor the reliability of the 100 Area distribution system. Therefore, immediate response to correct these problems is not recommended. However, a planned methodology, outlined in an Activity Plan, to correct these problems should be developed and implemented in the near future.
Date:
September 23, 1994
Creator:
Webber, J. J.
Object Type:
Report
System:
The UNT Digital Library
100 Area Water Study
This paper gives a cost breakdown of all the water facilities in the 100-F area for the month of January, 1948. Also given is the cost of chlorine for addition to the process water system along with where it is added and in what amounts. Lastly, the average figure for the hardness for the Columbia River water at Hanford.
Date:
September 23, 1948
Creator:
Beekman, S. W.
Object Type:
Report
System:
The UNT Digital Library
100 Areas: (For technical progress letter No. 111), August 13--August 19
This technical progress report details 100 Area activities for the time period of August 13 through August 19, 1946.
Date:
August 23, 1946
Creator:
Jordan, W. E.
Object Type:
Report
System:
The UNT Digital Library
103-06A-DA4-Base Input from BRAC Commission Visit to National Geospatial-Intelligence Agency, MD dtd 26 May 2005
103-06A-DA4-Base Input from BRAC Commission Visit to National Geospatial-Intelligence Agency, MD dtd 26 May 2005. Input includes NGA Presentation for Chairman Principi, NGA Facilities Consolidation Plan and BRAC Impacts, and National Geospatial-Intelligence Agency Activities Deliberative Package.
Date:
June 23, 2005
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
105-DR Large sodium fire facility soil sampling data evaluation report
This report evaluates the soil sampling activities, soil sample analysis, and soil sample data associated with the closure activities at the 105-DR Large Sodium Fire Facility. The evaluation compares these activities to the regulatory requirements for meeting clean closure. The report concludes that there is no soil contamination from the waste treatment activities.
Date:
January 23, 1996
Creator:
Adler, J. G.
Object Type:
Report
System:
The UNT Digital Library
(129)Xe NMR of Mesoporous Silicas
The porosities of three mesoporous silica materials were characterized with {sup 129}Xe NMR spectroscopy. The materials were synthesized by a sol-gel process with r = 0, 25, and 70% methanol by weight in an aqueous cetyltrimethylammonium bromide solution. Temperature dependent chemical shifts and spin lattice relaxation times reveal that xenon does not penetrate the pores of the largely disordered (r= 70%) silica. For both r = 0 and 25%, temperature dependent resonances corresponding to physisorbed xenon were observed. An additional resonance for the r = 25% sample was attributed to xenon between the disordered cylindrical pores. 2D NMR exchange experiments corroborate the spin lattice relaxation data which show that xenon is in rapid exchange between the adsorbed and the gas phase.
Date:
April 23, 1999
Creator:
Anderson, M.T.; Asink, R.A.; Kneller, J.M. & Pietrass, T.
Object Type:
Article
System:
The UNT Digital Library
200 kW neutral beam injection into the 2XII mirror device
None
Date:
April 23, 1973
Creator:
Coensgen, F. H.; Cummins, W. F.; Nexsen, W. E., Jr.; Molvik, A. W. & Simonen, T. C.
Object Type:
Article
System:
The UNT Digital Library