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The paper presents an assessment of the overall on-site laboratories (OSL) optimized neutron-gamma counter performance for analysis of gram-sized plutonium samples. Great care and efforts were undertaken to establish a valid calibration for the neutron counter, and to investigate the range of its applicability in terms of varying sample parameters such as isotopic composition and material type (plutonium oxide (PuO(2)) versus mixed oxide). Neutron multiplication effects were found to be small for the gram-sized samples, but not negligible. Other relevant error components governing the individual neutron and gamma measurement as well as the combination of both were also investigated in detail.

Additional information

Authors: OTTMAR H, JRC Karlsruhe (DE);SCHUBERT A, JRC Karlsruhe (DE);CROMBOOM O, JRC Karlsruhe (DE);EBERLE H, JRC Karlsruhe (DE)
Bibliographic Reference: Paper presented: 5th International Conference on Facility Operations-Safeguards Interface, Jackson Hole (US), September 24-29, 1995
Availability: Available from (1) as Paper EN 39160 ORA
Record Number: 199512041 / Last updated on: 1996-01-15
Original language: en
Available languages: en