Masses of 32Ar and 33Ar for fundamental tests -: art. no. 260801

被引：82

作者：

Blaum, K ^{[1
]}

Audi, G

Beck, D

Bollen, G

Herfurth, F

Kellerbauer, A

Kluge, HJ

Sauvan, E

Schwarz, S

机构：

[1] CERN, Div EP, CH-1211 Geneva 23, Switzerland

[2] GSI Darmstadt, D-64291 Darmstadt, Germany

[3] CNRS, IN2P3, CSNSM, F-91405 Orsay, France

[4] Michigan State Univ, NSCL, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.91.260801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Masses of the short-lived radionuclides Ar-32 (T-1/2=98 ms) and Ar-33 (T-1/2=173 ms) have been determined with the Penning trap mass spectrometer ISOLTRAP. Relative uncertainties of 6.0x10(-8) (deltam=1.8 keV) and 1.4x10(-8) (deltam=0.44 keV), respectively, have been achieved. At present, these new mass data serve as the most stringent test of the quadratic form of the isobaric-multiplet mass equation. Furthermore, the improved accuracy for the mass of Ar-32 will allow for a better constraint on scalar contributions to the weak interaction. New mass values have also been measured for Ar-44 and Ar-45, and a 20sigma deviation for Ar-44 from the literature value was found and interpreted.

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页数：4

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