PARITY NONCONSERVATION FOR NEUTRON RESONANCES IN U-238

被引：98

作者：

BOWMAN, JD

BOWMAN, CD

BUSH, JE

DELHEIJ, PPJ

FRANKLE, CM

GOULD, CR

HAASE, DG

KNUDSON, J

MITCHELL, GE

PENTTILA, S

POSTMA, H

ROBERSON, NR

SEESTROM, SJ

SZYMANSKI, JJ

YUAN, VW

ZHU, X

机构：

[1] N CAROLINA STATE UNIV,RALEIGH,NC 27695

[2] TRIANGLE UNIV NUCL LAB,DURHAM,NC 27706

[3] TRIUMF,VANCOUVER V6T 2A3,BC,CANADA

[4] DELFT UNIV TECHNOL,DELFT,NETHERLANDS

[5] DUKE UNIV,DURHAM,NC 27706

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.65.1192

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Parity nonconservation was studied for seventeen states in U239 by measuring the helicity dependence of the total cross section for epithermal neutrons scattered from U238. The root-mean-squared parity-violating matrix element for the mixing of p-wave and s-wave states was determined to be M=0.58-0.25+0.50 meV. This corresponds to a parity-violating spreading width of PV=1.0×10-7 eV. Under plausible assumptions this gives a value of 4×10-7 for P, the ratio of strengths of the P-odd and P-even effective nucleon-nucleon interactions. © 1990 The American Physical Society.

引用

页码：1192 / 1195

页数：4

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