Double-β-decay Q values of 130Te, 128Te, and 120Te

被引：92

作者：

Scielzo, N. D. ^{[1
]}

Caldwell, S. ^{[2
,3
]}

Savard, G. ^{[2
,3
]}

Clark, J. A. ^{[2
]}

Deibel, C. M. ^{[2
,4
]}

Fallis, J. ^{[5
]}

Gulick, S. ^{[6
]}

Lascar, D. ^{[2
,7
]}

Levand, A. F. ^{[2
]}

Li, G. ^{[2
,6
]}

Mintz, J. ^{[8
]}

Norman, E. B. ^{[8
]}

Sharma, K. S. ^{[5
]}

Sternberg, M. ^{[2
,3
]}

Sun, T. ^{[2
]}

Van Schelt, J. ^{[2
,3
]}

机构：

[1] Lawrence Livermore Natl Lab, Phys Sci Directorate, Livermore, CA 94550 USA

[2] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[3] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[4] Michigan State Univ, Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA

[5] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada

[6] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[7] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

[8] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW C | 2009年 / 80卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

PRECISION MASS-SPECTROMETRY; PENNING TRAPS; RAMSEY METHOD; ELECTRON; LIMITS; GE-76; IONS;

D O I：

10.1103/PhysRevC.80.025501

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 double-beta-decay Q values of Te-130, Te-128, and Te-120 have been determined from parent-daughter mass differences measured with the Canadian Penning Trap mass spectrometer. The Xe-132-Xe-129 mass difference, which is precisely known, was also determined to confirm the accuracy of these results. The Te-130 Q value was found to be 2527.01 +/- 0.32 keV, which is 3.3 keV lower than the 2003 Atomic Mass Evaluation recommended value and is consistent with another recent Penning trap measurement. The Te-128 and Te-120 Q values were found to be 865.87 +/- 1.31 and 1714.81 +/- 1.25 keV, respectively. For Te-120, this reduction in uncertainty of nearly a factor of 8 opens up the possibility of using this isotope for sensitive searches for neutrinoless double-electron capture and electron capture with beta(+) emission.

引用

页数：5

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