Office of Scientific & Technical Information Technical Reports - 17 Matching Results

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Assessment of resonance ionization mass spectrometry for analytical chemistry and spectroscopy

Description: Resonance ionization mass spectrometry (RIMS) is a natural outgrowth of RIS. The result of an RIS process is an ion pair. The electron can be used to detect the process, and single atom detection has been demonstrated by this method. The cation resulting from the RIS process actually carries more easily accessible and useful information (i.e. the mass of the ion). RIMS is useful in mass analysis. The development of RIMS has proceeded along several different directions, using CW or pulsed lasers… more
Date: April 20, 1984
Creator: Young, J. P.; Donohue, D. L. & Smith, D. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Automatic beam centering at the SSC interaction regions

Description: In the SSC interaction regions, the two colliding beams, each only a few microns in size, will have to be centered and maintained in good alignment over many hours, in order to provide the maximum possible luminosity and to minimize off-center beam-beam focussing effects. It is unlikely that sufficiently good alignment can be achieved without some kind of active feedback system, based on the beam-beam interaction rate. This memo describes such a system. In the proposed scheme, one of the beams … more
Date: March 20, 1984
Creator: Joestlein, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Choice of Tevatron tune with matched low-. beta. insertions

Description: The Tevatron lattice, following closely the Main Ring lattice, is made up of approximately 90 FODO cells with six straight sections equally spaced. The straight sections are identical (neglecting the special high-..beta.. straight section used for resonant extraction) providing six-fold symmetry. Each straight section is comprised mainly of a pair of doublets, one at each end, in an antisymmetric configuration. The ..beta..-functions are matched to the building block cells but the dispersion fu… more
Date: June 20, 1984
Creator: Month, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparison of three ICF reactor designs

Description: Three concepts for inertial confinement fusion (ICF) reactors are described and compared with each other, and with magnetic fusion and fission reactors on the basis of environmental impact, safety and efficiency. The critical technical developments of each concept are described. The three concepts represent alternative development paths for inertial fusion.
Date: September 20, 1984
Creator: Hogan, W.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Facile reaction/extraction of coal with supercritical fluids. Quarterly technical progress report, January 1-March 31, 1984

Description: Arylmethyl phenyl ethers undergo competing reactions when treated with Lewis acids in benzene solvent. Apparently, benzene is insufficiently reactive to compete with intramolecular (intrapolymer) nucleophiles and, consequently, no increase in solubility accompanies the cleavages of ether links upon addition of benzene. When better nucleophiles, naphthalene and phenanthene, are provided, carbonium ions generated from ether cleavages are capped and the product is lower in molecular weight and mor… more
Date: April 20, 1984
Creator: Venier, C. G. & Squires, T. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fixed-fugacity option for the EQ6 geochemical reaction path code

Description: EQ3/6 is a software package used to model aqueous geochemical systems. The EQ6 code allows reaction paths of dynamic systems to be calculated. This report describes a new option for the EQ6 computer program that permits the fugacity of any gas in the EQ6 data base to be set to a fixed value. This capability permits simulation of the effect of rapid chemical exchange with a large external gas reservoir by allowing the user to fix the fugacities of selected gas species. Geochemical environments s… more
Date: December 20, 1984
Creator: Delany, J. M. & Wolery, T. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MOD silver metallization for photovoltaics. Quarterly technical report, December 1, 1983-February 29, 1984. [Metallo-organic decomposition]

Description: It was determined that pyrolysis products can produce dark surface films on MOD silver conductors. Improving the purity of all ink ingredients helped this problem. It was established that the existence and nature of the surface film is influenced by the rate of air flow during firing and by the heating rate in the 70 to 225/sup 0/C range, but these processing parameters have not as yet been optimized. Low temperature solvent removal was determined to be of prime importance in obtaining good adh… more
Date: March 20, 1984
Creator: Vest, G. M. & Vest, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modern solid state laser materials

Description: This document contains visual aids used in an invited talk entitled Modern Solid State Laser Materials, presented at the Conference on Lasers and Electro-Optics (CLEO) held in Anaheim, California, on June 20, 1984. Interest at LLNL in solid state lasers focuses on evaluating the potential of solid state laser media for high average power applications, including inertial fusion power production. This talk identifies the relevant bulk material parameters characterizing average power capacity and … more
Date: June 20, 1984
Creator: Krupke, W. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Operating procedures: Fusion Experiments Analysis Facility

Description: The Fusion Experiments Analysis Facility (FEAF) is a computer facility based on a DEC VAX 11/780 computer. It became operational in late 1982. At that time two manuals were written to aid users and staff in their interactions with the facility. This manual is designed as a reference to assist the FEAF staff in carrying out their responsibilities. It is meant to supplement equipment and software manuals supplied by the vendors. Also this manual provides the FEAF staff with a set of consistent, w… more
Date: March 20, 1984
Creator: Lerche, R. A. & Carey, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Probabilistic analyses of failure in reactor coolant piping. [Double-ended guillotine break]

Description: LLNL is performing probabilistic reliability analyses of PWR and BWR reactor coolant piping for the NRC Office of Nuclear Regulatory Research. Specifically, LLNL is estimating the probability of a double-ended guillotine break (DEGB) in the reactor coolant loop piping in PWR plants, and in the main stream, feedwater, and recirculation piping of BWR plants. In estimating the probability of DEGB, LLNL considers two causes of pipe break: pipe fracture due to the growth of cracks at welded joints (… more
Date: July 20, 1984
Creator: Holman, G.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Simulation program for central helium liquefier

Description: The computer program described here analyzes the performance of Fermilab Central Helium Liquefier (CHL) and predicts the values of the plant thermodynamic variables at all process points in the plant. To simulate CHL, this program is modified from the prototype program which was developed by Hitachi Ltd. a couple of years ago. This program takes care of only the steady state simulation and takes account of the change of the turbine efficiency, the pressure drops and the UA values of the heat ex… more
Date: February 20, 1984
Creator: Kawamura, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Time-resolved studies of ultrarapid solidification of highly undercooled molten silicon formed by pulsed laser irradiation

Description: This paper reports new results of nanosecond-resolution time-resolved optical reflectivity measurements, during pulsed excimer (KrF, 248 nm) laser irradiation of Si-implanted amorphous (a) silicon layers, which, together with model calculations and post-irradiation TEM measurements, have allowed us to study both the transformation of a-Si to a highly undercooled liquid (l) phase and the subsequent ultrarapid solidification process.
Date: July 20, 1984
Creator: Lowndes, D. H.; Jellison, G. E., Jr.; Wood, R. F. & Carpenter, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Use of induction linacs with nonlinear magnetic drive as high average power accelerators

Description: The marriage of induction linac technology with Nonlinear Magnetic Modulators has produced some unique capabilities. It appears possible to produce electron beams with average currents measured in amperes, at gradients exceeding 1 Mev/meter, and with power efficiencies approaching 50%. A 2 MeV, 5 kA electron accelerator is under construction at Lawrence Livermore National Laboratory (LLNL) to allow us to demonstrate some of these concepts. Progress on this project is reported here.
Date: August 20, 1984
Creator: Birx, D. L.; Cook, E. G.; Hawkins, S. A.; Newton, M. A.; Poor, S. E.; Reginato, L. L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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