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Light Absorption and Scattering Mechanisms in Laser Fusion Plasmas (open access)

Light Absorption and Scattering Mechanisms in Laser Fusion Plasmas

The picture of laser light absorption and scattering which is emerging from theory and computer simulation studies of laser-plasma interactions is described. On the subject of absorption, we discuss theoretical and experimental evidence that resonance absorption in a steepened density profile is a dominant absorption mechanism. Recent work also indicates the presence of critical surface ripples, which we study using two and three dimensional computer simulations. Predictions of hot electron spectra due to resonance absorption are described, as are effects of plasma outflow. We then discuss two regimes where stimulated scattering may occur. Brillouin scattering is expected in the underdense target blow-off, for long laser pulses, and is limited by ion heating. Raman scattering in the background gas of a reactor target chamber is predicted to be at most a 10 percent effect for 1 ..mu..m lasers.
Date: October 4, 1977
Creator: Barnes, C.; Estabrook, K. G.; Kruer, W. L.; Langdon, A. B.; Lasinski, B. F.; Max, C. E. et al.
Object Type: Article
System: The UNT Digital Library
Effects of catalytic mineral matter on CO/CO sub 2 , temperature and burning time for char combustion (open access)

Effects of catalytic mineral matter on CO/CO sub 2 , temperature and burning time for char combustion

The temperature of a char particle burning in an oxygen containing atmosphere is the product of a strongly coupled balance between particle size and physical properties, heat transfer from the particle, surface reactivity, CO/CO{sub 2} ratio and gas phase diffusion in the surrounding boundary layer and within the particle. CO{sub 2}/CO ratios can be strongly influenced by catalytic material in the carbon and by the char temperature. In this program we are measuring the CO{sub 2}/CO ratio for both catalyzed and uncatalyzed chars over a wide range of temperature. These results will then be used to develop predictive models for char temperature and burning rates. The electrodynamic balance has been successfully used to make such measurements for single 200{mu}m spherocarb particles. A few theoretical approaches to model a single particle oxidation have been made, but most of them assumed the infinitely thin reaction zone at the particle surface. This approach can not explain pore diffusion limitation, structural change, or reaction at low temperatures inside the particle. Too simplifying solid phase reaction may leads to wrong predictions. In this report, progress on constructing models including both solid and gas phase reaction are reported.
Date: May 4, 1992
Creator: Longwell, J. P.; Sarofim, A. F.; Lee, Chun-Hyuk & Modestino, A. J.
Object Type: Report
System: The UNT Digital Library
Technology for large tandem mirror experiments (open access)

Technology for large tandem mirror experiments

Construction of a large tandem mirror (MFTF-B) will soon begin at Lawrence Livermore National Laboratory (LLNL). Designed to reach break-even plasma conditions, the facility will significantly advance the physics and technology of magnetic-mirror-based fusion reactors. This paper describes the objectives and the design of the facility.
Date: September 4, 1980
Creator: Thomassen, K.I.
Object Type: Article
System: The UNT Digital Library
Exploding pusher performance at fixed laser power, a theoretical model (open access)

Exploding pusher performance at fixed laser power, a theoretical model

A model for the physics of exploding pusher targets is presented which compares favorably with the predictions of the complex simulation code, LASNEX.
Date: October 4, 1977
Creator: Rosen, M.D. & Nuckolls, J.H.
Object Type: Article
System: The UNT Digital Library
Review of proposed EPA ambient lead criteria standard document. Final report. Task assignment No. 10 (open access)

Review of proposed EPA ambient lead criteria standard document. Final report. Task assignment No. 10

The proposed October 1983 EPA ambient lead criteria document, Air Quality Criteria for Lead is reviewed from the perspective of DOE's policies and programs and addresses potential impacts on energy production and energy-intensive industries. Following an introduction, the study is organized in five subsequent sections. Section 2.0 addresses environmental and health effects of exposure to lead. Section 3.0 reviews sources of lead emissions. Section 4.0 presents information on lead concentrations in ambient air. Section 5.0 examines dose-effect relationships among lead emissions, ambient air concentrations and blood lead levels. Section 6.0 presents Radian's evaluation of the regulatory implications of the criteria document and the information it provides. 10 figures, 11 tables.
Date: March 4, 1984
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Proposed Tax Reform: Summaries of items included in the Tentative Decisions of the Committee on ways and means, House of representatives 93rd congress. (open access)

Proposed Tax Reform: Summaries of items included in the Tentative Decisions of the Committee on ways and means, House of representatives 93rd congress.

This report is about Proposed Tax Reform: Summaries of items included in the Tentative Decisions of the Committee on ways and means, House of representatives 93rd congress.
Date: November 4, 1974
Creator: Drake, Susan L.
Object Type: Report
System: The UNT Digital Library
[News Script: Senate, union strikes, murder, and weather] (open access)

[News Script: Senate, union strikes, murder, and weather]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: March 4, 1969
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Weather, Senate, school board, and unions] (open access)

[News Script: Weather, Senate, school board, and unions]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: March 4, 1969
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Nixon] (open access)

[News Script: Nixon]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: March 4, 1969
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Johnny Swain] (open access)

[News Script: Johnny Swain]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: March 4, 1969
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Mississippi River] (open access)

[News Script: Mississippi River]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: March 4, 1969
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Cop dinner] (open access)

[News Script: Cop dinner]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: March 4, 1969
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Teachers] (open access)

[News Script: Teachers]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: December 4, 1968
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Message from newscaster] (open access)

[News Script: Message from newscaster]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: March 4, 1969
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: Weather info] (open access)

[News Script: Weather info]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: March 4, 1969
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: City council] (open access)

[News Script: City council]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: September 4, 1968
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: F-111] (open access)

[News Script: F-111]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: March 4, 1969
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[News Script: F-111] (open access)

[News Script: F-111]

Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story.
Date: March 4, 1969
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Object Type: Script
System: The UNT Digital Library
[Letter from Sandra Lanier-Lerma to Nancy Reynolds, November 1993] (open access)

[Letter from Sandra Lanier-Lerma to Nancy Reynolds, November 1993]

Photocopy of a letter from Sandra Lanier-Lerma, Assistant Superintendent for Instruction and Operations for Corpus Christi ISD to Nancy Reynolds, Project Coordinator of North Texas Institute for Educators on the Visual Arts. In regards to an invitation sent by NTIEVA to Corpus Christi ISD to form a partnership. CCISD's initial plan includes the formation of a partnership with the Art Museum of South Texas to develop a Satellite Consortium in South Texas and to write a five-year plan to providing quality art education programs in South Texas. CCISD district looks forward to the opportunities with North Texas Institute for Educators on the Visual Arts might provide for the students.
Date: November 4, 1993
Creator: Lanier-Lerma, Sandra
Object Type: Letter
System: The UNT Digital Library
[Letter from Vicki Rosenberg to Jack Davis, November 4, 1993] (open access)

[Letter from Vicki Rosenberg to Jack Davis, November 4, 1993]

Photocopy of a letter from Vicki Rosenberg, program office for the Getty Center, to Jack Davis, co-director for North Texas Institute for Educators on the Visual Arts. The letter is in regards to Rosenberg's and Val Marmillion's visit to Denton on the morning of January 18th and they will be leaving the afternoon of January 20th. The evening of the 18th Rosenberg and Marmillion are meeting with Melba Whatley of the Marcus Foundation to discuss the importance of funding arts education. The rest of their time will be spent with Davis and NTIEVA.
Date: November 4, 1993
Creator: Rosenberg, Vicki
Object Type: Letter
System: The UNT Digital Library
[Letter from Cassandra Broadus to Eddye O'Neal, February 4, 1991] (open access)

[Letter from Cassandra Broadus to Eddye O'Neal, February 4, 1991]

Photocopy of a letter from Cassandra Broadus, North Texas Institute for Educators on the Visual Arts to Eddye O'Neal, teacher at T.D. Marshall Elementary School. Broadus is interested in helping arrange a field trip to the Dallas Museum of Art for first graders at T.D. Marshall. Broadus writes that she has spoken with Aileen Horan at the Dallas Museum of Art and has arranged for a free field trip for the class, and that the buses will also be provided by the museum. Broadus hopes that O'Neal will consider this opportunity for her students and to contact her as soon as possible to discuss further details.
Date: February 4, 1991
Creator: Broadus, Cassandra
Object Type: Letter
System: The UNT Digital Library
[Letter from Nancy Reynolds to Joe Cordova, November 4, 1992] (open access)

[Letter from Nancy Reynolds to Joe Cordova, November 4, 1992]

Photocopy of a letter from Nancy Reynolds, Project Coordinator of North Texas Institute for Educators on the Visual Arts, to Joe Cordova, Boys & Girls Clubs of Greater Fort Worth, Inc. In regards to NTIEVA working with the club for three sessions of their seminar and how the clubs staff participated with desire to work towards implementation of more comprehensive art programs. Enclosed in the letter to Cordova are recommendations for the Arts & Crafts Program for the organization.
Date: November 4, 1992
Creator: Reynolds, Nancy
Object Type: Letter
System: The UNT Digital Library
Premature Release of Election Results and Election Predictions 1967 (open access)

Premature Release of Election Results and Election Predictions 1967

This report documents possible future outcomes of elections for the federal office.
Date: June 4, 1967
Creator: Yadlosky, Elizabeth
Object Type: Report
System: The UNT Digital Library
Report of Group II-2: Running at ISA (open access)

Report of Group II-2: Running at ISA

A discussion is given of the anticipated operating conditions at the ISABELLE storage rings. Communications between experimental and control areas are considered, and beam luminosity monitoring is discussed. Running conditions and expected problems are outlined. (PMA)
Date: August 4, 1977
Creator: Chen, M.; Herrera, J. C.; Littenberg, L.; Thorndike, A.; Ogren, H.; Potter, K. et al.
Object Type: Article
System: The UNT Digital Library