SIGN CORRELATIONS AND PARITY NONCONSERVATION FOR NEUTRON RESONANCES IN TH-232

被引：104
作者：
FRANKLE, CM
BOWMAN, JD
BUSH, JE
DELHEIJ, PPJ
GOULD, CR
HAASE, DG
KNUDSON, JN
MITCHELL, GE
PENTTILA, S
POSTMA, H
ROBERSON, NR
SEESTROM, SJ
SZYMANSKI, JJ
YOO, SH
YUAN, VW
ZHU, X
机构：
[1] TRIANGLE UNIV NUCL LAB, DURHAM, NC 27706 USA
[2] UNIV CALIF LOS ALAMOS SCI LAB, LOS ALAMOS, NM 87545 USA
[3] TRIUMF, VANCOUVER V6T 2A3, BC, CANADA
[4] DELFT UNIV TECHNOL, DELFT, NETHERLANDS
[5] DUKE UNIV, DURHAM, NC 27706 USA
来源：
PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 05期
关键词：
D O I：
10.1103/PhysRevLett.67.564
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Parity-nonconserving longitudinal analyzing powers were measured for 23 p-wave neutron resonances in Th-232. Seven resonances show effects of greater than 2-sigma statistical significance (95% confidence) - the largest sample yet measured in a single nucleus. All seven analyzing powers have positive sign. Strong sign correlations arc not a feature of the conventional statistical model of parity mixing between compound nuclear states. The results suggest that the mechanism of parity violation in resonance reactions is more complicated than previously assumed.
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页码：564 / 567
页数：4
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