ULTRASENSITIVE RADIOACTIVE DETECTION OF COLLINEAR-LASER OPTICAL-PUMPING - MEASUREMENT OF THE NUCLEAR-CHARGE RADIUS OF CA-50

被引：49

作者：

VERMEEREN, L

SILVERANS, RE

LIEVENS, P

KLEIN, A

NEUGART, R

SCHULZ, C

BUCHINGER, F

机构：

[1] KATHOLIEKE UNIV LEUVEN,VASTE STOF FYS MAGNETISME LAB,B-3001 LOUVAIN,BELGIUM

[2] CERN,ISOLDE COLLABORAT,DIV PPE,CH-1211 GENEVA 23,SWITZERLAND

[3] UNIV MAINZ,INST PHYS,W-6500 MAINZ,GERMANY

[4] MCGILL UNIV,FOSTER RADIAT LAB,MONTREAL H3A 2B2,QUEBEC,CANADA

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.68.1679

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first application of an ultrasensitive detection scheme in on-line collinear-laser spectroscopy. It is based on radioactive detection of optical depopulation pumping, using state-selective charge exchange as an intermediate step. This extends the calcium isotope shift measurements beyond the f7/2 shell closure. The extracted Ca-50 mean-square charge radius constitutes the first experimentally determined one of a short-lived neutron-rich isotope beyond the N = 28 shell closure. The steep increase in radius after the doubly magic Ca-48 nucleus indicates a strong coupling between the P3/2 neutrons and the core protons.

引用

页码：1679 / 1682

页数：4

共 19 条

[1] ISOTOPE SHIFTS AND HYPERFINE-STRUCTURE OF THE 4S21S0-4S4P1P1 TRANSITION IN CALCIUM ISOTOPES [J].