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The (3He,tf) as a surrogate reaction to determine (n,f) cross sections in the 10 to 20 MeV energy range
The surrogate reaction 238U(3He,tf) is used to determine the 237Np(n,f) cross section indirectly over an equivalent neutron energy range from 10 to 20 MeV. A self-supporting ~;;761 mu g/cm2 metallic 238U foil was bombarded with a 42 MeV 3He2+ beam from the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory (LBNL). Outgoing charged particles and fission fragments were identified using the Silicon Telescope Array for Reaction Studies (STARS), consists of two 140 mu m and one 1000 mu m Micron S2 type silicon detectors. The 237Np(n,f) cross sections, determined indirectly, were compared with the 237Np(n,f) cross section data from direct measurements, the Evaluated Nuclear Data File (ENDF/B-VII.0), and the Japanese Evaluated Nuclear Data Library (JENDL 3.3) and found to closely follow those datasets. Use of the (3He,tf) reaction as a surrogate to extract (n,f) cross section in the 10 to 20 MeV equivalent neutron energy is found to be suitable.
Date:
February 25, 2009
Creator:
Basunia, M. S.; Clark, R. M.; Goldblum, B. L.; Bernstein, L. A.; Phair, L.; Burke, J. T. et al.
Object Type:
Article
System:
The UNT Digital Library
[Act Blue receipts Feb. 25, 2009]
Act Blue receipts for February 25, 2009, for the Texas Stonewall Democratic Caucus biennial statewide conference.
Date:
February 25, 2009
Creator:
Texas Stonewall Democratic Caucus
Object Type:
Text
System:
The UNT Digital Library
[ActBlue Invoice]
An invoice from Texas Stonewall Democratic Caucus to ActBlue of $725.00 on February 25, 2009.
Date:
February 25, 2009
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
[ActBlue receipts]
ActBlue receipts for the Texas Stonewall Democratic Caucus 2009 biennial statewide conference.
Date:
February 25, 2009
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Alternate VHTR/HTE INterface for mitigating tritum.
High temperature creep in structures at the interface between the nuclear plant and the hydrogen plant and the migration of tritium from the core through structures in the interface are two key challenges for the Very High Temperature Reactor (VHTR) coupled to the High Temperature Electrolysis (HTE) process. The severity of these challenges, however, can be reduced by lowering the temperature at which the interface operates. Preferably this should be accomplished in a way that does not reduce combined plant efficiency and other performance measures. A means for doing so is described in this report. A heat pump is used to raise the temperature of near-waste heat from the PCU to the temperature at which nine-tenths of the HTE process heat is needed. In addition to mitigating tritium transport and creep of structures, structural material commodity costs are reduced and plant efficiency is increased by a couple of percent.
Date:
February 25, 2009
Creator:
Vilim, R.
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 111, No. 165, Ed. 1 Wednesday, February 25, 2009
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 25, 2009
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Banquet heralds diversity]
A scrapbook page with a newspaper clipping from the North Texas Daily, with the title, "Banquet heralds diversity." The scrapbook page includes photographs of students dancing, a man performing on his instrument and students engaged in African headdresses.
Date:
February 25, 2009
Creator:
Rogers, Manuella
Object Type:
Text
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 89, No. 56, Ed. 1 Wednesday, February 25, 2009
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
February 25, 2009
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
Brady Standard-Herald and Heart of Texas News (Brady, Tex.), Ed. 1 Wednesday, February 25, 2009
Weekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
February 25, 2009
Creator:
Stewart, James E.
Object Type:
Newspaper
System:
The Portal to Texas History
Bureau of Prisons: Written Policies on Lateral Transfers and Assessment of Temporary Assignments Needed
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Justice's Federal Bureau of Prisons (BOP) is responsible for the custody and care of more than 202,000 federal offenders with approximately 35,000 employees, almost half of whom are correctional officers, dispersed across BOP's 114 correctional facilities in 6 regions. In response to a request, GAO identified whether BOP had policies and procedures and how it assessed the management of those policies and procedures for (1) employee-requested lateral transfers of BOP employees between correctional facilities and (2) day-to-day changes in correctional services or temporary assignments of BOP employees within a correctional facility. GAO reviewed available documentation on BOP's policies and procedures on lateral transfers and temporary assignments. GAO also interviewed officials from BOP's central and regional offices and seven facilities selected on the basis of the number of staff; at least one facility was selected from within each of BOP's six regions."
Date:
February 25, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Central Asia's Security: Issues and Implications for U.S. Interests
This report discusses the internal and external security concerns of the Central Asian states. Security concerns faced by the states include mixes of social disorder, crime, corruption, terrorism, ethnic and civil conflict, border tensions, water and transport disputes, the proliferation of weapons of mass destruction (WMD), and trafficking in illegal narcotics and persons.
Date:
February 25, 2009
Creator:
Nichol, Jim
Object Type:
Report
System:
The UNT Digital Library
Cherokeean Herald (Rusk, Tex.), Vol. 160, No. 1, Ed. 1 Wednesday, February 25, 2009
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
February 25, 2009
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
China's Foreign Aid Activities in Africa, Latin America, and Southeast Asia
This report examines China's economic impact in three regions -- Africa, Latin America (Western Hemisphere), and Southeast Asia -- with an emphasis on bilateral foreign assistance. In the past several years, the People's Republic of China (PRC) has bolstered its diplomatic presence and garnered international goodwill through its financing of infrastructure and natural resource development projects, assistance in the carrying out of such projects, and large economic investments in many developing countries
Date:
February 25, 2009
Creator:
Lum, Thomas; Fischer, Hannah; Gomez-Granger, Julissa & Leland, Anne
Object Type:
Report
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 114, No. 8, Ed. 1 Wednesday, February 25, 2009
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
February 25, 2009
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Collegian (Hurst, Tex.), Vol. 21, No. 18, Ed. 1 Wednesday, February 25, 2009
Weekly student newspaper published in Hurst, Texas serving the Tarrant County College District that includes school news and information along with advertising.
Date:
February 25, 2009
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Colony Courier-Leader (The Colony, Tex.), Vol. 28, No. 4, Ed. 1 Wednesday, February 25, 2009
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
February 25, 2009
Creator:
Monk, Devin
Object Type:
Newspaper
System:
The Portal to Texas History
Cuba: Issues for the 111th Congress
This report tracks developments in U.S. policy toward Cuba and legislative initiatives in the 111th Congress.
Date:
February 25, 2009
Creator:
Sullivan, Mark P.
Object Type:
Report
System:
The UNT Digital Library
Defense Acquisitions: Charting a Course for Improved Missile Defense Testing
Testimony issued by the Government Accountability Office with an abstract that begins "The Missile Defense Agency (MDA) has spent about $56 billion and will spend about $50 billion more through 2013 to develop a Ballistic Missile Defense System (BMDS). This testimony is based on two reviews GAO was directed to conduct in 2008. In addition to our annual review assessing the annual cost, testing, schedule, and performance progress MDA made in developing BMDS, we have also reported on MDA's targets program. In this testimony we discuss (1) the productivity of MDA's recent test program, (2) the consequences of the testing shortfalls, and (3) key factors that should be considered as MDA revises its approach to testing. GAO assessed contractor cost, schedule, and performance; tests completed; and the assets fielded during 2008. GAO also reviewed pertinent sections of the U.S. Code, acquisition policy, and the activities of a new missile defense board."
Date:
February 25, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Defense: FY2009 Authorization and Appropriations
This report discusses issues related to defense funding in the wake of the American Recovery and Reinvestment Act of 2009, generally referred to as the "economic stimulus" bill. The President's FY2009 budget request, released February 4, 2008, included $611.1 billion in new budget authority for national defense.
Date:
February 25, 2009
Creator:
Towell, Pat; Daggett, Stephen & Belasco, Amy
Object Type:
Report
System:
The UNT Digital Library
Deposit Summary
Deposit summary of $846.33 made on February 26, 2009.
Date:
February 25, 2009
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Doctoral Recital: 2009-02-25 - Reuben Allred, piano
Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
February 25, 2009
Creator:
Allred, Reuben
Object Type:
Sound
System:
The UNT Digital Library
[Elida Barraza Invoice]
An invoice from Elida Barraza, the Printing Services Coordinator at the Printing Services department to Mr. Stallings of $30.33 on February 25, 2009.
Date:
February 25, 2009
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[Elida Barraza Invoice]
An invoice from Elida Barraza, the Printing Services Coordinator at the Printing Services department to Mr. Stallings of $5.96 on February 25, 2009.
Date:
February 25, 2009
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[Email from multiple recipients about brunch program]
Email correspondence from Daniel Graney to "All" on February 25, 2009, discussing the brunch program and take turns introducing the awardees.
Date:
February 25, 2009
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library