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Title: Plutonium scrap multiplicity counter operation manual

Technical Report ·
OSTI ID:6833651

This manual describes the design features and performance and operating characteristics for the plutonium scrap multiplicity counter (PSMC). It 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 (55%) detector using eighty [sup 3]He tubes in a high-density polyethylene body. The new multiplicity shift-register electronics can sort multiplicities up to 256. The PSMC can be applied to plutonium masses in the range from a few milligrams to 5 kg; both conventional coincidence counting and multiplicity counting are used as appropriate. This manual gives the performance data and preliminary calibration parameters for the PSMC.

Research Organization:
Los Alamos National Lab., NM (United States)
Sponsoring Organization:
USDOE; USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
6833651
Report Number(s):
LA-12479-M; ISPO-349; ON: DE93005837
Country of Publication:
United States
Language:
English