Neutron charge radius determined from the energy dependence of the neutron transmission of liquid Pb-208 and Bi-209

被引：106
作者：
Kopecky, S
Harvey, JA
Hill, NW
Krenn, M
Pernicka, M
Riehs, P
Steiner, S
机构：
[1] OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA
[2] INST HOCHENERGIEPHYS, A-1060 VIENNA, AUSTRIA
[3] UNIV ZURICH, INST PHYS, CH-8057 ZURICH, SWITZERLAND
来源：
PHYSICAL REVIEW C | 1997年 / 56卷 / 04期
关键词：
D O I：
10.1103/PhysRevC.56.2229
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The ORELA experiment on the neutron charge radius has been reevaluated. The neutron transmission of liquid thorogenic Pb-208 With the neutron time-of-flight method in the neutron energy range from 0.08 to 800 eV was measured. Additional studies on condensed matter effects for liquid Bi and liquid Pb have provided more accurate corrections resulting in smaller systematic uncertainties for the neutron-electron scattering length b(ne). We have also reevaluated the transmission data on liquid Bi of Melkonian and co-workers. We have obtained values of b(ne)= (-1.33+/-0.027+/-0.03) X 10(-3) fm for Pb-208 and b(ne)= (-1.44+/-0.033+/-0.06) X 10(-3) fm for Bi-209 where for both results the two uncertainties denote the statistical and the systematic uncertainty, respectively. The results for Pb-208 and Bi-209 were found to be in good agreement.
引用
收藏
页码：2229 / 2237
页数：9
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