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Langner, D.G.; Sweet, M.R.; Salazar, S.D.; Kroncke, K.E.
Los Alamos National Lab., NM (United States). Funding organisation: USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States)1998
Los Alamos National Lab., NM (United States). Funding organisation: USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States)1998
AbstractAbstract
[en] This manual describes the design features, performance, and operating characteristics for the FB-Line Neutron Multiplicity Counter (FBLNMC). The FBLNMC counts neutron multiplicities to quantitatively assay plutonium in many forms, including impure scrap and waste. Monte Carlo neutronic calculations were used to design the high-efficiency (57%) detector that has 113 3H tubes in a high-density polyethylene body. The new derandomizer circuit is included in the design to reduce deadtime. The FBLNMC can be applied to plutonium masses in the range from a few tens of grams to 5 kg; both conventional coincidence counting and multiplicity counting can be used as appropriate. This manual gives the performance data and preliminary calibration parameters for the FBLNMC
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Jan 1998; 17 p; CONTRACT W-7405-ENG-36; ALSO AVAILABLE FROM OSTI AS DE98001881; NTIS; INIS; US GOVT. PRINTING OFFICE DEP
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