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FAST NEUTRON FLUX AND SPECTRUM MEASUREMENTS IN HIFAR

Technical Report ·
OSTI ID:4828982
Results are presented of measurements of the fast neutron fluxes and energy spectra in the core and 2v experimental facilities of HIFAR using threshold detectors. The following reactions were used: P/sup 31/ (n,p)Si/sup32/ (n,p)P/sup32/ flux scanning tubes was found to be 23 plus or minus 3% of the total effective flux at the same position, having a maximum value of 4.3 x 10/sup 13/ neutrons/cm/sup 32//sec approximately. 8.3 Mw thermal), for a maximum effective flux of 1.7 x 10/sup 14/ neutrons/cm//sup 2/sec. A neutron energy spectrunn dif- fering only slightly from a fission spectrinn shape was found in all positions. The use of the Ni/sup 58/ (n,p) Co /sup 58/reaction as a fast flux monitor is discussed. (auth)
Research Organization:
Australia. Atomic Energy Commission Research Establishment, Lucas Heights, New South Wales
NSA Number:
NSA-16-002771
OSTI ID:
4828982
Report Number(s):
AAEC/E-59
Country of Publication:
Country unknown/Code not available
Language:
English