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53 Pu cans were assayed, using a well counter connected to the Euratom time correlation analyser, giving the measured data C-tot, Reals and the multiplicity distributions, from which the plutonium mass can be derived. Measured and calculated multiplicity distributions are then compared. Finally most of the cans were analysed destructively; agreement with neutron multiplicity analyses was always within 3 - 4 %. A great variety of material was made available: clean PU-oxide, MOX powder, sintered pellets, grinding powder, dirty materials with high impurities. It was concluded that when impure, inhomogeneous materials are to be assayed, the shift register concept may lead to substantial discrepancies, and the multiplicity counter technique is to be preferred.

Additional information

Authors: BONDAR L, JRC Ispra (IT);GUARDINI S, JRC Ispra (IT);BECKERS L, Belgonucléaire, Dessel (BE);INGELS R, Belgonucléaire, Dessel (BE);CARCHON R, SCK/CEN, Mol (BE)
Bibliographic Reference: EUR 16090 EN (1994) 37 pp., FS, free of charge
Availability: Available from Joint Research Centre, Public Relations Office, I-21020 Ispra (Va.) (IT)
Record Number: 199510260 / Last updated on: 1995-03-21
Original language: en
Available languages: en
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