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Spectroscopic study of coal structure and reactivity

Description: Work done during this period (December 15, 1989 to March 14, 1990) covered two of the three primary areas of study of this project. The first involved the continuing development a of step-scanning interferometer for the photoacoustic depth-profiling of materials whose composition varies in the spatial region between 5 and 50 {mu}m from its surface. The second covered the initial construction of an on-line interface between a supercritical fluid chromatograph (SFC) and a Fourier transform infrar… more
Date: September 7, 1990
Creator: Rabenstein, D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Inner-shell ionization of lithium-like chromium ions

Description: We have used high-resolution x-ray spectroscopy to investigate inner-shell ionization of Cr{sup 21+} ions by electron impact using the Electron Beam Ion Trap at Lawrence Livermore Laboratory. Our measurements indicate that inner-shell ionization enhances the intensity of the radiative transition 1s2s {sup 3}S{sub 1}{yields}1s{sup 2}{sup 1}S{sub 0}. 7 refs., 4 figs., 1 tab.
Date: September 7, 1990
Creator: Vogel, D. A.; Beiersdorfer, P.; Marrs, R. E.; Wong, K. L. & Zasadzinski, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Spectroscopic study of coal structure and reactivity

Description: The aim of this project is to perform quantitative analysis of the Fourier transform infrared (FT-IR) spectra of coals and coal extracts. The major difficulty encountered in the analysis of the FT-IR spectra of coals is the complexity of the bands, which consist of many closely overlapped peaks. Two techniques that are commonly used for the quantitative analysis of complex FT-IR spectra are deconvolution and curve-fitting. Deconvolution is a mathematical technique that narrows the speaks in a s… more
Date: September 7, 1990
Creator: Rabenstein, D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Tex Theater]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a news story about the history of the Texas Theatre in Oak Cliff.
Date: September 7, 1990
Duration: 1 minute 48 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Location: 32.743379 -96.825927
Partner: UNT Libraries Special Collections
open access

Electron impact ionization cross section measurement of lithium-like barium ions

Description: The electron impact ionization cross section of Li-like Ba{sup 53+} has been measured at 22 keV using an electron beam ion trap. The measurement makes use of a novel technique, which is discussed in detail. We find a value somewhat higher than predicted by theory.
Date: September 7, 1990
Creator: Wong, K.; Beiersdorfer, P.; Vogel, D.A.; Marrs, R.E. (Lawrence Livermore National Lab., CA (USA)) & Levine, M. (Lawrence Berkeley Lab., CA (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A systematic study of actinide production from the interactions of heavy ions with sup 248 Cm

Description: Production cross sections for heavy actinides produced from the interactions of {sup 12}C, {sup 31}P, {sup 40}Ar, and {sup 44}Ca ions with {sup 248}Cm were measured at energies ranging from 0.98 to 1.35 X Coulomb barrier. The recoiling reaction products were collected in copper or gold catcher foils located near the {sup 248}Cm target. Separate fractions of Bk, Cf, Es, Fm, and Md were obtained from a radiochemical separation procedure. For the {sup 12}C system, a He/KCl jet was used to transpor… more
Date: September 7, 1990
Creator: Leyba, J.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Dixie Chicks]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story by reporter Jack Helsel about a new Dallas musical group, the Dixie Chicks. This story features performances and interviews with the musicians. This story aired at 6 P.M.
Date: September 7, 1990
Duration: 2 minutes
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Fiesta]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 5 P.M.
Date: September 7, 1990
Duration: 43 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Mural]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10 P.M.
Date: September 7, 1990
Duration: 42 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Feed-forward compensation for transient beam loading of the 805 MHz debuncher for the Fermilab linac upgrade

Description: The expected momentum spread from the 400 MeV upgrade of the Fermilab linac is {plus minus}0.19% growing to about {plus minus}0.25% in 63 m of beam transport to the booster synchrotron. The desired injection value is about {plus minus}0.05%. An 805 MHz (h=1) debuncher is located 47 m downstream of the linac to reduce the momentum spread and the differences in mean energy between bunches. The beam pulse to the booster will vary from about 2--15 {mu}s at average current of 30--50 mA depending on … more
Date: September 7, 1990
Creator: MacLachlan, J. A.; Mills, F. E. & Owens, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Air Tests]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: September 7, 1990, 6:00 p.m.
Duration: 2 minutes 06 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Playground]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: September 7, 1990, 5:00 p.m.
Duration: 1 minute 34 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
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