High-precision half-life measurement for the superallowed Fermi β+ emitter 22Mg

被引：5

作者：

Dunlop, M. R. ^{[1
]}

Svensson, C. E. ^{[1
]}

Ball, G. C. ^{[2
]}

Leslie, J. R. ^{[3
]}

Andreoiu, C. ^{[4
]}

Bernier, N. ^{[5
]}

Bidaman, H. ^{[1
]}

Bildstein, V. ^{[1
]}

Bowry, M. ^{[2
]}

Burbadge, C. ^{[1
]}

Caballero-Folch, R. ^{[2
]}

Varela, A. Diaz ^{[1
]}

Dunlop, R. ^{[1
]}

Garnsworthy, A. B. ^{[2
]}

Garrett, P. E. ^{[1
]}

Hackman, G. ^{[2
]}

Jigmeddorj, B. ^{[1
]}

Leach, K. G. ^{[6
]}

MacLean, A. D. ^{[1
]}

Olaizola, B. ^{[1
]}

Measures, J. ^{[2
]}

Natzke, C. ^{[6
]}

Saito, Y. ^{[2
]}

Smith, J. K. ^{[7
]}

Turko, J. ^{[1
]}

Zidar, T. ^{[1
]}

机构：

[1] Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada

[2] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada

[3] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada

[4] Simon Fraser Univ, Dept Chem, Burnaby, BC V5A IS6, Canada

[5] Univ British Columbia, Dept Phys, Vancouver, BC V6T 2A3, Canada

[6] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA

[7] Reed Coll, Dept Phys, Portland, OR 97202 USA

来源：

PHYSICAL REVIEW C | 2017年 / 96卷 / 04期

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

ISOSPIN-MIXING CORRECTIONS; DECAY; MATRIX;

D O I：

10.1103/PhysRevC.96.045502

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：

A high-precision half-life measurement for the superallowed Fermi beta(+) emitter Mg-22 was performed at the TRIUMF-ISAC facility using a 4 pi proportional gas counter. The result of T-1/2 = 3.87400 +/- 0.00079 s is a factor of 3 more precise than the previously adopted world average and resolves a discrepancy between the two previously published Mg-22 half-life measurements.

引用

页数：7

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