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Atomic Line Shapes in the Presence of an External Magnetic Field
Both the theoretical basis and computational approach for extending the capabilities of a spectral line broadening code are presented. Following standard line broadening theory, the effects of an external magnetic field are incorporated into the atomic Hamiltonian and plasma average. In the presence of an external magnetic field the atomic Hamiltonian angular properties are altered--atomic energy levels are perturbed and the spectral emission line is polarized. The magnetic field introduces a preferential axis that changes the plasma average. These extensions have been incorporated into a new spectral line broadening code that is applied to several problems of importance to the understanding of tokamak edge plasmas. Applications fall into two broad categories: (1) determination of local plasma properties from distinct line shape features; and (2) consideration of global plasma phenomenon, such as radiation transport. Observable features of the Zeeman effect make H{sub {alpha}} a good magnetic field diagnostic. H{sub {beta}} does not make a good electron density diagnostic since the Zeeman effect is comparable to the Stark effect for a majority of tokamak edge plasma conditions. When optically thick lines exist the details of the spectral line shapes are shown to significantly influence the transport of radiation throughout the system.
Date:
July 3, 2002
Creator:
Adams, M L; Lee, R W; Scott, H A; Chung, H K & Klein, L
Object Type:
Article
System:
The UNT Digital Library
Confirmatory Survey Results for the Emergency Operations Facility (EOF) at the Connecticut Yankee Haddam Neck Plant, Haddam, Connecticut
The U.S. Nuclear Regulatory Commission (NRC) requested that the Oak Ridge Institute for Science and Education (ORISE) perform a confirmatory survey on the Emergency Operations Facility (EOF) at the Connecticut Yankee Haddam Neck Plant (HNP) in Haddam, Connecticut
Date:
July 3, 2007
Creator:
Adams, W. C.
Object Type:
Report
System:
The UNT Digital Library
Snapping Supernovae at z>1.7
We examine the utility of very high redshift Type Ia supernovae for cosmology and systematic uncertainty control. Next generation space surveys such as the Supernova/Acceleration Probe (SNAP) will obtain thousands of supernovae at z>1.7, beyond the design redshift for which the supernovae will be exquisitely characterized. We find that any z gtrsim 2 standard candles' use for cosmological parameter estimation is quite modest and subject to pitfalls; we examine gravitational lensing, redshift calibration, and contamination effects in some detail. The very high redshift supernovae - both thermonuclear and core collapse - will provide copious interesting information on star formation, environment, and evolution. However, the new observational systematics that must be faced, as well as the limited expansion of SN-parameter space afforded, does not point to high value for 1.7<z<3 SNe Ia in controlling evolutionary systematics relative to what SNAP can already achieve at z<1.7. Synergy with observations from JWST and thirty meter class telescopes afford rich opportunities for advances throughout astrophysics.
Date:
July 3, 2006
Creator:
Aldering, Greg; Kim, Alex G.; Kowalski, Marek; Linder, Eric V. & Perlmutter, Saul
Object Type:
Article
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 26, No. 27, Ed. 1 Thursday, July 3, 2008
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
July 3, 2008
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Oral History Interview with Beryl Barton Womack, July 3, 2002
Access:
Use of this item is restricted to the UNT Community
Interview with Beryl Barton Womack. The interview includes Womack's personal experiences about England during the Blitz in World War II, courtship and marriage to Lieutenant Travis Womack, early education, wartime rationing, attending the Domestic Science Teachers College, and coming to the United States. Additionally, Womack speaks about Winston Churchill's inspirational speeches during the Battle of Britain, the bombing of her parents' home in Nottinghamshire, the coming of American troops, and adjustments to American life.
Date:
July 3, 2002
Creator:
Alexander, William J. & Womack, Beryl Barton
Object Type:
Book
System:
The UNT Digital Library
Development and anlysis of fast, approximate 3D Algorithms for interpretation of multi-component induction logging data
This report addresses the effects of electrical anisotropy on the 3D inversion of single-well induction logging data when anisotropy is not considered. Of concern are possible artifacts that may lead to an incorrect interpretation of the formation about the borehole. Comparison is made of 3D isotropic inversion on a suite of model data, with and without anisotropy, consisting of an infinite layer and layer terminated at the borehole. In both cases, the layer dip (or well deviation) is varied. Inversion of the anisotropic data result in an overestimate of the layer conductivity, and the lateral extent of the layer about the borehole.
Date:
July 3, 2006
Creator:
Alumbaugh, David L.
Object Type:
Report
System:
The UNT Digital Library
Pages of the United States Congress: History, Background Information, and Proposals for Change
This report provides a brief history of the congressional page programs, including their duties, and background information about House and Senate pages. It also has an overview of changes and reforms from 1981-2001, and proposed changes, reforms, and various issues.
Date:
July 3, 2008
Creator:
Amer, Mildred
Object Type:
Report
System:
The UNT Digital Library
Coming to Washington, D.C.? Sources of Information on Temporary Housing
This report will introduce a newcomer to the Washington, D.C., metropolitan area to sources of general interest, neighborhoods, housing, and public transportation. The intended audience is congressional staff needing short-term or summer housing, although many of the sources given may also be helpful for those needing more than a three- to six-month lease. Sources suggested are often accessible by their Internet addresses.
Date:
July 3, 2002
Creator:
Anderson, J. Michael
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 107, No. 78, Ed. 1 Sunday, July 3, 2005
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 3, 2005
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Individuals with Disabilities Education Act (IDEA): Possible Voucher Issues
Congress is considering reauthorization of the Individuals with Disabilities Education Act (IDEA) program (the main federal program providing special education and related services to children with disabilities). Among the options being discussed is increasing parental choice under IDEA. This report provides background on current federal choice programs and on the Florida McKay Scholarship program, which provides scholarships for children with disabilities enrolled in the state’s public schools to attend other public schools or to attend participating private schools. The report concludes with a discussion of possible issues that a federal special education voucher program might raise.
Date:
July 3, 2002
Creator:
Apling, Richard N.; Jones, Nancy L. & Smole, David P.
Object Type:
Report
System:
The UNT Digital Library
The European Parliament
The 785-member, directly elected European Parliament (EP) is a key institution of the 27-member European Union (EU). Once limited to being a consultative assembly, the EP has accumulated more power over time. Currently, it plays a role in the EU's legislative and budgeting processes, and exercises general supervision over other EU bodies. Ties between the EP and the U.S. Congress are long-standing, and EPCongressional exchanges are expected to continue in the second session of the 110th Congress.
Date:
July 3, 2008
Creator:
Archick, Kristin
Object Type:
Report
System:
The UNT Digital Library
European Union Englargement
The European Union (EU) views the enlargement process as a historic opportunity to promote stability and prosperity in Europe. Although the EU maintains that the enlargement door remains open, "enlargement fatigue" has become a serious issue in Europe and some experts believe that EU enlargement may be reaching its limits. The status of EU enlargement is one of many transatlantic issues likely to be of interest to the second session of the 110th Congress. This report lists the various nations admitted to the European Union within the past several years and analyzes the enlargement issue in general.
Date:
July 3, 2008
Creator:
Archick, Kristin
Object Type:
Report
System:
The UNT Digital Library
The European Union: Questions and Answers
This report describes the European Union (EU), its evolution, governing institutions, trade policy, and efforts to forge common foreign and defense policies. The report also addresses the EU-U.S. and EU-NATO relationships, which may be of interest to the second session of the 110th Congress. It will be updated as events warrant. For more information, see CRS Report RS21344, European Union Enlargement, by Kristin Archick, and CRS Report RL34381, European Union-U.S. Trade and Investment Relations: Key Issues, coordinated by Raymond Ahearn.
Date:
July 3, 2008
Creator:
Archick, Kristin
Object Type:
Report
System:
The UNT Digital Library
The European Union's Reform Process: The Lisbon Treaty
In December 2007, leaders of the European Union (EU) signed the Lisbon Treaty, which seeks to reform the EU's governing institutions and decisionmaking processes to enable a larger EU to operate more effectively. This new treaty represents the latest stage in a reform process begun in 2002 and essentially replaces the proposed EU "constitution" that foundered after French and Dutch voters rejected it in referendums in 2005. In June 2008, Irish voters rejected the Lisbon Treaty, and have thrown its future into doubt. This report provides background information on EU reform efforts and possible implications for U.S.-EU relations that may be of interest in the second session of the 110th Congress.
Date:
July 3, 2008
Creator:
Archick, Kristin
Object Type:
Report
System:
The UNT Digital Library
Northern Ireland: The Peace Process
For years, the British and Irish governments sought to facilitate a peaceful settlement to the conflict in Northern Ireland. After many ups and downs, the two governments and the Northern Ireland political parties participating in the peace talks announced an agreement on April 10, 1998. Despite a much improved security situation in the years since then, full implementation of the resulting Good Friday Agreement has been difficult. On May 8, 2007, however, Northern Ireland's devolved political institutions were restored after an almost five-year suspension following a powersharing deal between the largest unionist and nationalist parties.
Date:
July 3, 2008
Creator:
Archick, Kristin
Object Type:
Report
System:
The UNT Digital Library
Atmospheric Radiation Measurement Program Facilities Newsletter, June 2002.
Monthly newsletter discussing news and activities related to the Atmospheric Radiation Measurement Program, articles about weather and atmospheric phenomena, and other related topics.
Date:
July 3, 2002
Creator:
Atmospheric Radiation Measurement Program (U.S.)
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Implications of the Tevatron jet results on PDF
We report a new measurement of the pseudorapidity ({eta}) and transverse-energy (E{sub T}) dependence of the inclusive jet production cross section in p{bar p} collisions at {radical}s = 1:8 TeV using 95 pb{sup {minus}1} of data collected with the D0 detector at the Fermilab Tevatron. The differential cross section d{sup 2}{sigma}/(dE{sub T}d{eta}) is presented up to {vert_bar}{eta}{vert_bar} = 3, significantly extending previous measurements. The results are in good overall agreement with next-to-leading order predictions from QCD, indicate a preference for certain parton distribution functions, and provide the world's best constraint on the gluon distribution at high parton momentum fraction x.
Date:
July 3, 2001
Creator:
Babukhadia, Levan
Object Type:
Article
System:
The UNT Digital Library
South Texas Catholic (Corpus Christi, Tex.), Vol. 44, No. 13, Ed. 1 Friday, July 3, 2009
Semi-monthly newspaper from Corpus Christi, Texas published by the Diocese of Corpus Christi that includes news of interest to Diocese members along with advertising.
Date:
July 3, 2009
Creator:
Beaton, Paula J.
Object Type:
Newspaper
System:
The Portal to Texas History
The 2002 Farm Bill: Overview and Status
The Federal Agriculture Improvement and Reform, or FAIR, Act of 1996 (commonly known as the "farm bill"), which was due to expire in 2002, is expected to be extended for another six years when President Bush signs the bill into law. This report discusses the provisions of the new "farm bill," including the federal spending involved.
Date:
July 3, 2002
Creator:
Becker, Geoffrey S. & Womach, Jasper
Object Type:
Report
System:
The UNT Digital Library
Nuclear Nonproliferation Issues
None
Date:
July 3, 2003
Creator:
Behrens, Carl E.
Object Type:
Report
System:
The UNT Digital Library
Gasoline Prices: Causes of Increases and Congressional Response
None
Date:
July 3, 2008
Creator:
Behrens, Carl E. & Glover, Carol
Object Type:
Report
System:
The UNT Digital Library
SULFURIC ACID REMOVAL PROCESS EVALUATION: LONG-TERM RESULTS
The objective of this project is to demonstrate the use of alkaline reagents injected into the furnace of coal-fired boilers as a means of controlling sulfuric acid emissions. The project is being co-funded by the U.S. DOE National Energy Technology Laboratory, under Cooperative Agreement DE-FC26-99FT40718, along with EPRI, the American Electric Power Company (AEP), FirstEnergy Corp., the Tennessee Valley Authority, and Dravo Lime, Inc. Sulfuric acid controls are becoming of increasing interest to power generators with coal-fired units for a number of reasons. Sulfuric acid is a Toxic Release Inventory species and can cause a variety of plant operation problems such as air heater plugging and fouling, back-end corrosion, and plume opacity. These issues will likely be exacerbated with the retrofit of selective catalytic reduction (SCR) for NO{sub x} control on many coal-fired plants, as SCR catalysts are known to further oxidize a portion of the flue gas SO{sub 2} to SO{sub 3}. The project previously tested the effectiveness of furnace injection of four different calcium-and/or magnesium-based alkaline sorbents on full-scale utility boilers. These reagents were tested during four one- to two-week tests conducted on two FirstEnergy Bruce Mansfield Plant (BMP) units. One of the sorbents tested was a magnesium …
Date:
July 3, 2002
Creator:
Blythe, Gary M. & McMillan, Richard
Object Type:
Report
System:
The UNT Digital Library
National Integrated Ballistics Information Network (NIBIN) for Law Enforcement
This report provides a brief history of how the current National Integrated Ballistics Information Network (NIBIN) system evolved and operates. It includes information about issues that may be of concern to Members and committees of the 107th Congress, such as whether expanding NIBIN to include new gun purchases could be construed as a step toward a national gun registry system. The report also summarizes bills introduced in the 107th Congress related to NIBIN.
Date:
July 3, 2001
Creator:
Boesman, William C. & Krouse, William J.
Object Type:
Report
System:
The UNT Digital Library
F-22 Raptor Aircraft Program
This report discusses the background information, analysis and the recent developments in the F-22 Raptor Aircraft Program. The F-22 program raises questions about its cost and the need for this aircraft, the capabilities it would have, and the number of these planes needed to meet military requirements. The F-22 has had strong congressional support, although some have criticized the program on grounds of cost, requirements, and coordination with other tactical aircraft programs. Deletion of procurement funds in the FY2000 defense appropriation bill passed by the House made the future of the program a major issue for House and Senate conferees in 1999.
Date:
July 3, 2002
Creator:
Bolkcom, Christopher
Object Type:
Report
System:
The UNT Digital Library