Measurements of neutron spectra produced from a thick lead target bombarded with 0.5-and 1.5-GeV protons

Authors
Meigo, S Takada, H Chiba, S Nakamoto, T Ishibashi, K Matsufuji, N Maehata, K Shigyo, N Watanabe, Y Numajiri, M
Citation
S. Meigo et al., Measurements of neutron spectra produced from a thick lead target bombarded with 0.5-and 1.5-GeV protons, NUCL INST A, 431(3), 1999, pp. 521-530
Citations number
30
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
431
Issue
3
Year of publication
1999
Pages
521 - 530
Database
ISI
SICI code
0168-9002(19990721)431:3<521:MONSPF>2.0.ZU;2-X
Abstract
Neutron spectra produced from a thick lead target bombarded with 0.5 and 1. 5 GeV protons have been measured in order to provide experimental data for benchmarking the medium-energy particle transport calculations. The accurat e neutron spectra were obtained in the energy region between 1.6 and 150 Me V. The measured data have been compared with the calculated results of an N MTC/JAERI-MCNP-4A code system. The calculation reproduces the experiment fa irly well for the lower energy less than 10 MeV. It, however, gives about 5 0% lower neutron flux in the energy region between 20 and 80 MeV. By using the in-medium nucleon-nucleon scattering cross sections, this disagreement has been reduced. (C) 1999 Elsevier Science B.V. All rights reserved.