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Rapid vibrational and rotational energy-transfer rates in heated carbon dioxide collisions by double-resonance laser spectroscopy

Description: Rates for resonant vibrational and rotational energy transfer from the 001 state by CO/sub 2/ + CO/sub 2/ collisions have been measured. All data were obtained by double resonance spectroscopy with CO/sub 2/ lasers in a 2.5 meter absorption cell at 700/sup 0/K. Results for rotation transfer include pumped-level relaxation and the response of other 001 levels with ..delta..J up to 18. These data are compared to four relevant collision models via a 35-level rate equation analysis. Sequence-band (… more
Date: July 1, 1982
Creator: Thomason, M.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Processes of energy deposition by heavy particle impact. Technical report No. 2

Description: Experimental studies of the Li/sup +/ + He interaction have been extended to smaller internuclear separations to clarify a discrepancy between experiment and theory in the elastic cross sections and to observe and measure cross sections for inelastic excitation. For R less than or equal to 0.5 a/sub 0/ the elastic scattering differential cross section is observed to droop far below that expected from a single-state interaction based on ab initio ground-state potentials. In this same region of R… more
Date: July 6, 1971
Creator: Lorents, D. C. & Conklin, G. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Collision of fast highly charged ions in gas targets: ionization, recoil-ion production, and charge transfer

Description: Electron-capture, ionization, and recoil-ion-production cross sections are measured and calculated for fast highly charged projectiles in hydrogen and rare-gas targets. Recoil-ion-production cross sections are found to be large; the low energy and high charge states of the recoil ions make them useful for subsequent collision studies.
Date: July 1, 1982
Creator: Schalchter, A.S.; Berkner, K.H. & Beyer, H.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nonlinear evolution of drift instabilities in the presence of collisions

Description: Nonlinear evolution of drift instabilities in the presence of electron-ion collisions in a shear-free slab has been studied by using gyrokinetic particle simulation techniques as well as by solving, both numerically and analytically, model mode-coupling equations. The purpose of the investigation is to determine the mechanisms responsible for the nonlinear saturation of the instability and for the ensuing steady-state transport. Such an insight is very valuable for understanding drift wave prob… more
Date: July 1, 1986
Creator: Federici, J. F.; Lee, W. W. & Tang, W. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiochemical study of the reactions of heavy ions with gold

Description: Thick gold foils have been bombarded with heavy-ion projectiles at energies above the Coulomb barrier. The radioactive products were identified and their yields measured using gamma-ray spectrometry and an extensive series of computer programs developed for the data analysis. The total mass-yield distribution was extracted from the data using charge-dispersion curves inferred from the experimental results. One observes a change in the mass-yield distributions corresponding to primarily fusion-f… more
Date: July 1, 1977
Creator: Binder, I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Polarizability corrections in stimulated Raman propagation

Description: Traditional descriptions of stimulated Raman scattering relate the various Stokes and anti-Stokes fields to the incident pump field by means of a polarizability (tensor). This description is usable for pulsed radiation but it fails when the pump carrier frequency coincides with a resonant frequency of the medium. We here describe a simple procedure for correcting the traditional polarizability approximation for pulse envelopes so as to account for effects of finite pump bandwidth. The correctio… more
Date: July 30, 1991
Creator: Shore, B. W.; Johnson, M. A. & Lowder, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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E-Divisionn activities report

Description: This report describes some of the activities in E (Experimental Physics) Division during the past year. E-Division carries out research and development in areas related to the missions of the Laboratory. Many of the activities are in pure and applied atomic and nuclear physics. In addition this report describes work on accelerators, radiation damage, microwaves, and plasma diagnostics.
Date: July 1, 1980
Creator: Barschall, H.H. (comp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fusion Energy Division annual progress report, period ending December 31, 1989

Description: The Fusion Program of Oak Ridge National Laboratory (ORNL) carries out research in most areas of magnetic confinement fusion. The program is directed toward the development of fusion as an energy source and is a strong and vital component of both the US fusion program and the international fusion community. Issued as the annual progress report of the ORNL Fusion Energy Division, this report also contains information from components of the Fusion Program that are carried out by other ORNL organi… more
Date: July 1, 1991
Creator: Sheffield, J.; Baker, C. C. & Saltmarsh, M. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Proposed LLNL electron beam ion trap

Description: The interaction of energetic electrons with highly charged ions is of great importance to several research fields such as astrophysics, laser fusion and magnetic fusion. In spite of this importance there are almost no measurements of electron interaction cross sections for ions more than a few times ionized. To address this problem an electron beam ion trap (EBIT) is being developed at LLNL. The device is essentially an EBIS except that it is not intended as a source of extracted ions. Instead … more
Date: July 2, 1985
Creator: Marrs, R.E.; Egan, P.O.; Proctor, I.; Levine, M.A.; Hansen, L.; Kajiyama, Y. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

New experiments on few-electron very heavy atoms

Description: New experiments, to test quantum electrodynamics (QED) in strong Coulomb fields and to study atomic collisions at ultrarelativistic energies, are proposed. A 0.1% measurement of the 2/sup 2/P/sub 1/2/-2/sup 2/S/sub 1/2/ splitting in lithium like uranium (Z=92) and the 2/sup 3/P/sub 0/ - 2/sup 3/S/sub 1/ splitting in heliumlike uranium is proposed as a sub 1% test of the Lamb shift in a strong Coulomb field. Measurements of the hyperfine splitting of hydrogenlike thallium (Z=81) and the g/sub j/… more
Date: July 1, 1985
Creator: Gould, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Cross Sections for Electron Inelastic Collisions with Argon

Description: A complete set of optical oscillator strengths and electron-impact cross sections for the argon atom is presented in tabular form. A large variety of experimental data and theoretical calculations was studied, and various checks based on theory (including the constraint of sum rules) were critically performed. Data were analyzed mainly by a semi-empirical method that stresses the close relation of photoabsorption with electron-atom collisions.
Date: July 1980
Creator: Eggarter, E. & Inokuti, Mitio
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: 7-fatal]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: July 12, 1979, 6:00 p.m.
Duration: 1 minute 08 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: Car insurance]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: July 18, 1979, 10:00 p.m.
Duration: 1 minute 36 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: Crash]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: July 5, 1979, 6:00 p.m.
Duration: 48 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Multiple electron capture in close ion-atom collisions

Description: Collisions in which a fast highly charged ion passes within the orbit of K electron of a target gas atom are selected by emission of a K x-ray from the projectile or target. Measurement of the projectile charge state after the collision, in coincidence with the K x-ray, allows measurement of the charge-transfer probability during these close collisions. When the projectile velocity is approximately the same as that of target electrons, a large number of electrons can be transferred to the proje… more
Date: July 24, 1989
Creator: Schlachter, A. S.; Stearns, J. W.; Berkner, K. H.; Bernstein, E. M.; Clark, M. W.; DuBois, R. D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Computation applied to particle accelerator simulations

Description: The rapid growth in the power of large-scale computers has had a revolutionary effect on the study of charged-particle accelerators that is similar to the impact of smaller computers on everyday life. Before an accelerator is built, it is now the absolute rule to simulate every component and subsystem by computer to establish modes of operation and tolerances. We will bypass the important and fruitful areas of control and operation and consider only application to design and diagnostic interpre… more
Date: July 1, 1991
Creator: Herrmannsfeldt, W.B. (Stanford Linear Accelerator Center, Menlo Park, CA (United States)) & Yan, Y.T. (Superconducting Super Collider Lab., Dallas, TX (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Inelastic and Reactive Collisions With Polarized Excited Na Atoms

Description: Polarization effects in inelastic collisions of laser state-prepared Na(3/sup 2/P, M/sub J/) with Na/sup +/ leading to Na(3/sup 2/D) or Na(3/sup 2/S) are discussed for the energy range E/sub cm/ = 5-47.5eV. Studies with linearly polarized light can be explained with a simple ''locking'' model of the Na(P)-orbital. The investigations employing circularly polarized light are a very sensitive test of the models describing the nonadiabatic angular momentum coupling between electronic and nuclear mo… more
Date: July 1, 1985
Creator: Schmidt, H.; Hertel, I. V. & Lee, Y. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Computer simulation studies of high energy collision cascades

Description: A modified binary collision approximation allowing the proper order of the collisions in time was used to study cascades in Cu and Au at primary kinetic energies up to 100 keV. Nonlinearities were approximated by letting already-stopped cascade atoms become targets in later collisions, using an improved method of locating potential targets to extend the calculations to energies much higher than heretofore. Beside the effect of the approximate nonlinearity, the effect of thermal disorder in the … more
Date: July 1, 1991
Creator: Robinson, M.T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

[News Script: Dallas fatal]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about an elderly woman in Dallas that was killed when her car was struck by two other cars.
Date: July 14, 1972, 6:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
open access

[News Script: Railroad]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about Dallas having 55 car-train accidents and Fort Worth having 39 in 1971.
Date: July 30, 1972, 10:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
open access

[News Script: Traffic deaths]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about Dallas police questioning a motorist in connection to the traffic death of a child and van rear-ending a dump truck where the occupants of the van were killed.
Date: July 5, 1972, 6:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
open access

[News Script: Other deaths]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about two people dying in car accidents and three others being injured.
Date: July 1, 1972, 6:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
open access

[News Script: 3 kilt]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about a family of 4 who were in a car accident where three people killed and one person injured.
Date: July 15, 1972, 10:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
open access

[News Script: City worker killed]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about a 13-year old in critical condition after being struck by a train, a city worker that was killed in an on-the-job accident and a 41-year old that was killed in a car accident.
Date: July 17, 1972, 10:00 p.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
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