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Theoretical Study of Fission Product Gaseous Activity from a Homogeneous Reactor

Description: From abstract: Buildup of gaseous radioisotopes which are expected to be found in the atmosphere above a solution-fueled reactor has been calculated as a function of operating time. Krypton, iodine, xenon, and bromine have been considered. Direct fission and daughter yields are included in the summations of activities. Decay upon shutdown following various periods of equilibrium operation are tabulated.
Date: 1954
Creator: Donaldson, J. R.
Partner: UNT Libraries Government Documents Department

Laser-fusion program. Semiannual report, January--June 1973

Description: Brief discussions are given for each of the following areas of research covered during this report period: solid-state laser program, design analysis, component development, diagnostics, gas lasers, chemical lasers---the iodine laser, basic studies and advanced concepts, laser propagation, laser plasmas, laser fusion, isotope separation, and program resources. (MOW)
Date: August 22, 1973
Creator: Sussman, S.S. (ed.)
Partner: UNT Libraries Government Documents Department

Dual energy analysis using phoswich scintillation detectors for low-level in-vivo counting

Description: From nuclear science symposium; San Francisco, California, USA (14 Nov 1973). Electronics developed for a whole body counting system analyze the pulse heights of signals from both the sodium iodide (NaI(Tl)) and cesium iodide (CsI(Na)) crystals of a phoswich scintillation detector. Pulse shape discrimination is used to determine the origin of the scintillation, NaI or CsI, while rejecting coincident Compton-scattered events and photomultiplier tube noise. Both energy spectra are accumulated simultaneously in separate memory quadrants of a multichannel analyzer. The system allows for low-energy (5 keV to 125 keV) x-ray analysis from the NaI(TI) crystal and high-energy (100 keV to 2.5 MeV) x-ray or gamma -ray analysis from the CsI(Na) crystal. The discrimination system is better than 95% efficient over both energy ranges, with a lowenergy (12- 24 keV) shielded background count of less than 2 cpm for a single 5-in.-diam phoswich detector. This system thus extends the detector's normal energy range by more than an order of magnitude. (auth)
Date: October 1, 1973
Creator: Shapiro, E.G. & Anderson, A.L.
Partner: UNT Libraries Government Documents Department

Dynamics of a plasma discharge in a mirror field

Description: A cool plasma discharge in mirror geometry is modeled with ions flowing along field lines into electrodes beyond the throats. The velocity of the flow is determined by the electrode sheath prcpenties and nozzle-like phenomena in the mirror and ion source. This model is applicable to the wet-wood burner'' reactor and mirror target schemes. (auth)
Date: January 24, 1974
Creator: Lee, E. P. & McNamara, B.
Partner: UNT Libraries Government Documents Department