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Theory of atoms in strong, pulsed electromagnetic fields: 2, A free electron and a harmonically bound electron

Description: Multiple scale methods are used to treat several ingredients of the theory of atoms in strong electromagnetic fields. First, a focused electromagnetic field is expanded. Second, a classical electron is described giving the ponderomotive potential. Third, the quantum electron is treated in the WKB approximation. Fourth, the one dimensional quantum harmonic oscillator is solved; and last the one dimensional square well, showing the low intensity limit of the theory.
Date: July 1, 1987
Creator: Szoeke, A. & Garrison, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synopsis of talk on Bead Leach I Analysis

Description: The following are reported and discussed: status of Bead Leach I analyses as of 5/17/79, composition of 76-68 glass and detection limits for ICP analysis of leachate, and acid calibration data for ICP analysis (replicate runs of standard solution in Ultrex HNO/sub 3/). 5 figures. (DLC)
Date: August 1, 1979
Creator: Coles, D. G. & Garrison, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Generalized laser filamentation instability coupled to cooling instability

Description: We consider the propagation of laser light in an initially slightly nonuniform plasma. The classical dispersion relation for the laser filamentation growth rate (see e.g., B. Langdon, in the 1980 Lawrence Livermore National Laboratory Laser Program Annual Report, pp. 3-56, UCRL-50021-80, 1981) can be generalized to include other acoustical effects. For example, we find that the inclusion of potential imbalances in the heating and cooling rates of the ambient medium due to density and temperatur… more
Date: April 24, 1984
Creator: Liang, E.P.; Wong, J. & Garrison, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Laser propagation in underdense plasmas: Scaling arguments

Description: The propagation of an intense laser beam in the underdense plasma is modelled by treating the plasma as a relativistic, zero temperature, charged fluid. For paraxial propagation and a sufficiently underdense plasma ({omega}p/{omega} {much_lt} 1), a multiple-scales technique is used to expand the exact equations in powers of the small parameter {theta} {equivalent_to} {omega}p/{omega}. The zeroth order equations are used in a critical examination of previous work on this problem, and to derive a… more
Date: May 1, 1993
Creator: Garrison, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Stochastic differential equations and numerical simulation for pedestrians

Description: The mathematical foundation of the Ito interpretation of stochastic ordinary and partial differential equations is briefly explained. This provides the basis for a review of simple difference approximations to stochastic differential equations. An example arising in the theory of optical switching is discussed.
Date: July 27, 1993
Creator: Garrison, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coupled one- and two-photon resonances in three level atoms. [Averages method, density matrix]

Description: The coherent excitation of a three level atom by one- and two-photon resonances coupled by a common level is treated by the method of averages. The equations for the density matrix of the three resonant levels are solved analytically for square pulses of duration shorter than relaxation times. Double free induction decay occuring when both exciting fields are switched out of resonance simultaneously is exhibited. The emitted radiation is also calculated for an experiment in which the field driv… more
Date: June 1, 1979
Creator: Garrison, J.C.; Einwohner, T.H. & Wong, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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In situ monitoring of the effects of water quality on benthic detrital decomposition

Description: Detrital decomposition is an important marine benthic process which contributes to the fertility of seas, particularly in estuarian and coastal waters. The process involves a complex community of microorganisms and small animals which interact with each other in a manner similar to that which occurs in forest litter and in composts. Plastic chambers for measuring decomposition rates of Spartina alterniflora were placed on the bottom of the sea at four sites in the northeast: Towd Point, Southam… more
Date: January 1, 1978
Creator: Lee, J. J.; Mastropaolo, C.; McEnery, M.; Tietjen, J.H. & Garrison, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Wave optics modelling of amplified spontaneous emission

Description: A laser works by amplified spontaneous emission (ASE) of inverted atomic ions confined in an amplifier of rod-like geometry, such that ASE radiation is directed out of both ends of the rod. The forward and backward ASE waves are coupled through the population-rate equations and cause the saturation of the lasing transition (gain saturation). Diffraction of the waves in the transverse direction is responsible for the radiation pattern (angular distribution) observed on a distant screen and for t… more
Date: November 6, 1990
Creator: Ritchie, B. & Garrison, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radionuclide transport in sandstones with WIPP brine

Description: Retardation factors (R) have been measured for the transport of /sup 3/H, /sup 95m/Tc, and /sup 85/Sr in WIPP brine using St. Peter, Berea, Kayenta, and San Felipe sandstone cores. If tritium is assumed to have R=1, /sup 95m/Tc has R=1.0 to 1.3 and therefore is essentially not retarded. Strontium-85 has R = 1.0 to 1.3 on St. Peter, Berea, and Kayenta, but R=3 on San Felipe. This is attributed to sorption on the matrix material of San Felipe, which has 45 volume % matrix compared with 1 to 10 vo… more
Date: February 1, 1981
Creator: Weed, H.C.; Bazan, F.; Fontanilla, J.; Garrison, J.; Rego, J. & Winslow, A.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Relativistic self-focusing in underdense plasma

Description: In the present paper, we discuss light self-focusing in underdense (n<n{sub c}) plasmas. We will show that ion motion is important even for picosecond pulse durations and a description of relativistic self-focusing including ion dynamics will be presented in second part of the paper. In particular, we will demonstrate the formation of empty, wide channels in underdense plasma in the wake of the laser pulse. we discuss the applicability of our results to real situations and possible consequences… more
Date: April 24, 1997
Creator: Feit, M. D.; Garrison, J. C.; Komashko, A.; Musher, J. L.; Rubenchik, A. M. & Turistsyn, S. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The use of dimorphic Alu insertions in human DNA fingerprinting

Description: We have characterized certain Human Specific Alu Insertions as either dimorphic (TPA25, PV92, APO), sightly dimorphic (C2N4 and C4N4) or monomorphic (C3N1, C4N6, C4N2, C4N5, C4N8), based on studies of Caucasian, Asian, American Black and African Black populations. Our approach is based upon: (1) PCR amplification using primers directed to the sequences that flank the site of insertion of the different Alu elements studied; (2) gel electrophoresis and scoring according to the presence or absence… more
Date: December 4, 1992
Creator: Novick, G. E.; Gonzalez, T.; Garrison, J.; Novick, C. C.; Herrera, R. J.; Batzer, M. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Plasma diagnostic reflectometry

Description: Theoretical and experimental studies of plasma diagnostic reflectometry have been undertaken as a collaborative research project between the Lawrence Livermore National Laboratory (LLNL) and the University of California Department of Applied Science Plasma Diagnostics Group under the auspices of the Laboratory Directed Research and Development Program at LLNL. Theoretical analyses have explored the basic principles of reflectometry to understand its limitations, to address specific gaps in the … more
Date: February 26, 1996
Creator: Cohen, B. I.; Afeyan, B. B.; Garrison, J. C.; Kaiser, T. B.; Luhmann Jr. N. C.; Domier, C. W. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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