DETERMINATION OF THE RADIUS OF THE LI-11 NEUTRON HALO FROM PION DOUBLE CHARGE-EXCHANGE

被引：30

作者：

GIBBS, WR ^{[1
]}

HAYES, AC ^{[1
]}

机构：

[1] UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,LOS ALAMOS,NM 87545

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.67.1395

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have analyzed the pion-induced double-charge-exchange data for the direct population of the ground state of Li-11 by the B-11(pi-,pi+) Li-11 reaction. We find that the measured cross section determines the rms radius of the last two neutrons in Li-11 to be 5.1(-0.9)+0.6 fm, which corresponds to a total neutron rms radius for the nucleus of 3.28(-0.33)+0.24 fm. We show that for large assumed neutron-halo radii the cross section decreases as the radius of the halo to the inverse sixth power and that a radius of 12 fm leads to a cross section which is 3 orders of magnitude smaller than that measured.

引用

页码：1395 / 1398

页数：4

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