PENNING-TRAP MASS MEASUREMENTS OF NEUTRON-DEFICIENT RB AND SR ISOTOPES

被引:57
|
作者
OTTO, T
BOLLEN, G
SAVARD, G
SCHWEIKHARD, L
STOLZENBERG, H
AUDI, G
MOORE, RB
ROULEAU, G
SZERYPO, J
PATYK, Z
机构
[1] CSNSM,IN2P3,RENE BERNAS LAB,CNRS,F-91405 ORSAY,FRANCE
[2] MCGILL UNIV,FOSTER RADIAT LAB,MONTREAL H3A 2B2,PQ,CANADA
[3] WARSAW UNIV,INST EXPTL PHYS,PL-00681 WARSAW,POLAND
[4] SOLTAN INST NUCL STUDIES,PL-00681 WARSAW,POLAND
基金
加拿大自然科学与工程研究理事会;
关键词
RB-75; RB-76; RB-77; RB-78; RB-79; RB-80; RB-81; RB-82; RB-83; RB-84; RB-85; RB-86; RB-87; SR-78; SR-79; SR-80; SR-81; SR-82; SR-83; MEASURED MASSES; PENNING-TRAP MASS SPECTROMETER (ONLINE); LEAST-SQUARES ADJUSTMENT OF DATA; MACROSCOPIC/MICROSCOPIC MASS CALCULATIONS;
D O I
10.1016/0375-9474(94)90149-X
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 Penning-trap mass spectrometer ISOLTRAP installed at the on-line mass separator ISOLDE 2 at CERN has been used for mass determination of Rb-75-87 and Sr-78-83,Sr-87. Ions are captured in a Penning trap and their cyclotron frequency Omega(c) = (q/m)B in the trapping field B is measured. Ratios of these frequencies lead to the determination of the atomic mass of these isotopes. A resolving power of typically m/Delta m approximate to 10(6) and an accuracy of delta m = 10 keV is obtained. The mass of Sr-78 is measured for the first time and, in most cases, the mass values of the other isotopes are significantly improved. The experimental masses are compared with theoretical predictions.
引用
收藏
页码:281 / 302
页数:22
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