Experiments with thermalized rare isotope beams from projectile fragmentation:: A precision mass measurement of the superallowed β emitter 38Ca -: art. no. 152501

被引：100

作者：

Bollen, G ^{[1
]}

Davies, D ^{[1
]}

Facina, M ^{[1
]}

Huikari, J ^{[1
]}

Kwan, E ^{[1
]}

Lofy, PA ^{[1
]}

Morrissey, DJ ^{[1
]}

Prinke, A ^{[1
]}

Ringle, R ^{[1
]}

Savory, J ^{[1
]}

Schury, P ^{[1
]}

Schwarz, S ^{[1
]}

Sumithrarachchi, C ^{[1
]}

Sun, T ^{[1
]}

Weissman, L ^{[1
]}

机构：

[1] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.96.152501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The mass of the short-lived radio nuclide Ca-38 (T-1/2=440 ms) has been measured with the 9.4-T Penning trap mass spectrometer of the Low-Energy Beam and Ion Trap Facility. A mass uncertainty of delta m=280 eV has been achieved, corresponding to delta m/m=8x10(-9). The result makes Ca-38, a superallowed beta emitter, a new candidate to test the conserved-vector-current hypothesis. The experiment is also the first demonstration that short-lived radioactive isotopes produced by projectile fragmentation of relativistic heavy-ion beams can be slowed down and prepared such that precision experiments of this kind are possible.

引用

页数：4

共 25 条

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