NEUTRON-SCATTERING CROSS-SECTIONS OF U-238

被引:21
作者
BEGHIAN, LE [1 ]
KEGEL, GHR [1 ]
MARCELLA, TV [1 ]
BARNES, BK [1 ]
COUCHELL, GP [1 ]
EGAN, JJ [1 ]
MITTLER, A [1 ]
PULLEN, DJ [1 ]
SCHIER, WA [1 ]
机构
[1] UNIV LOWELL,CTR NUCL,LOWELL,MA 01854
关键词
Compilation and indexing terms; Copyright 2025 Elsevier Inc;
D O I
10.13182/NSE79-A20610
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
The University of Lowell high-resolution time-of-flight spectrometer has been used to measure angular distributions and 90-deg excitation functions for neutrons scattered from **2**3**8U in the energy range from 0. 9 to 3. 1 MeV. This study was limited to the elastic and the first two inelastic groups, corresponding to states of **2**3**8U at 45 keV (2** plus ) and 148 keV (4 plus ). Angular distributions were measured at primary neutron energies of 1. 1, 1. 9, 2. 5, and 3. 1 MeV for the same three neutron groups. Whereas elastic data are in fair agreement with the evaluation in the ENDF/B-IV file, there is substantial disagrement between inelastic measurements and the evaluated cross sections.
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页码:191 / 201
页数:11
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