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Abstract

Fluence determinations for 2.5, 5.0 and 14 MeV neutrons as performed in standard laboratories have been compared. Two methods of intercomparison were used: One is based on the determination of a gamma rate ratio between 115m-In as induced by fast neutrons in an indium sample on one hand and 51-Cr from calibrated source on the other hand and is used at all energies. The second method is restricted to 14 MeV neutrons and is based on counting induced specific niobium activities. This method delivers at the same time mean neutron energies by comparing ratios of zirconium to niobium activities. Results show that the uncertainty contribution from the transfer methods does not essentially increase the overall uncertainty and that there is generally consistency.

Additional information

Authors: LISKIEN H JRC GEEL ESTAB. (BELGIUM) LEWIS V E NATIONAL PHYSICAL LABORATORY, TEDDINGTON (UK) , JRC GEEL ESTAB. (BELGIUM);NATIONAL PHYSICAL LABORATORY, TEDDINGTON (UK)
Bibliographic Reference: IAEA ADVISORY GROUP MEETING ON NUCLEAR STANDARD REFERENCE DATA, GEEL (BELGIUM), NOV. 12-16, 1984 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 31884 ORA
Availability: Can be ordered online
Record Number: 1989123061200 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en