Investigation of the neutron fields on the surface of a massive lead target irradiated with 1.5 and 5 GeV protons

The spatial and energy characteristics of the neutron fields produced on the surface of a massive lead target irradiated with 1.5 and 5 GeV protons were investigated. In the course of the experiment, the distribution of the fission rates of the threshold nuclides ^sup 232^Th and ^sup 209^Bi on the l...

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Bibliographic Details
Published in:Atomic energy (New York, N.Y.) N.Y.), 2005-09, Vol.99 (3), p.633-638
Main Authors: KIEVETS, M. K, ZHUK, I. V, SOSNIN, A. N, KRIVOPUSTOV, M. I, D'YACHENKO, V. M
Format: Article
Language:English
Subjects:
Cadmium
Monte Carlo simulation
Studies
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Summary:The spatial and energy characteristics of the neutron fields produced on the surface of a massive lead target irradiated with 1.5 and 5 GeV protons were investigated. In the course of the experiment, the distribution of the fission rates of the threshold nuclides ^sup 232^Th and ^sup 209^Bi on the lateral surface of the target was obtained in two directions (transverse and longitudinal). The fission rates of ^sup 235^U (in and without a cadmium filter), ^sup 234^U, ^sup 236^U, ^sup 237^Np, and ^sup 238^U and the corresponding spectral indices and cadmium ratio for ^sup 235^U were also measured on the target surface. For the two values of the proton energy, the experimental values were compared with one another and with Monte Carlo simulation results.[PUBLICATION ABSTRACT]
ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-005-0258-7