High-precision half-life determination of 14O via direct β counting

被引：0

作者：

Sharma, S. ^{[1
]}

Grinyer, G. F. ^{[1
]}

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

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

Svensson, C. E. ^{[4
]}

Ali, F. A. ^{[4
,9
]}

Andreoiu, C. ^{[5
]}

Bernier, N. ^{[2
,6
,10
,11
]}

Bhattacharjee, S. S. ^{[2
]}

Bildstein, V ^{[4
]}

Burbadge, C. ^{[4
]}

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

Coleman, R. ^{[4
]}

Varela, A. Diaz ^{[4
]}

Dunlop, M. R. ^{[4
]}

Dunlop, R. ^{[4
]}

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

Fuakye, E. Gyabeng ^{[1
]}

Huber, G. M. ^{[1
]}

Jigmeddorj, B. ^{[4
]}

Kapoor, K. ^{[1
]}

Laffoley, A. T. ^{[4
]}

Leach, K. G. ^{[7
]}

Long, J. ^{[8
]}

MacLean, A. D. ^{[4
]}

Natzke, C. R. ^{[2
,7
]}

Olaizola, B. ^{[2
,12
]}

Radich, A. J. ^{[4
]}

Saei, N. ^{[1
]}

Smallcombe, J. T. ^{[2
,13
]}

Talebitaher, A. ^{[1
]}

Whitmore, K. ^{[5
]}

Zidar, T. ^{[4
]}

机构：

[1] Univ Regina, Dept Phys, Regina, SK S4S 0A2, Canada

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

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

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

[5] Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada

[6] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada

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

[8] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[9] Univ Sulaimani, Coll Educ, Dept Phys, POB 334, Sulaimani, Kurdistan Regio, Iraq

[10] Univ Western Cape, Dept Phys & Astron, P-B X17, ZA-7535 Bellville, South Africa

[11] Univ Zululand, Dept Phys & Engn, PB X1001, ZA-3886 Kwa Dlangezwa, South Africa

[12] CERN, ISOLDE, CH-1211 Geneva 23, Switzerland

[13] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England

来源：

EUROPEAN PHYSICAL JOURNAL A | 2022年 / 58卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

DECAY; LIVES;

D O I：

10.1140/epja/s10050-022-00730-w

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 half-life of the superallowed Fermi beta(+) emitter O-14 was determined to high precision via a direct beta counting experiment performed at the Isotope Separator and Accelerator (ISAC) facility at TRIUMF. The result, T-1/2(O-1(4)) = 70619.2(76) ms, is consistent with, but is more precise than, the world average obtained from 11 previous measurements. Combining the O-14 half-life deduced in the present work with the previous most precise measurements of this quantity leads to a reduction in the overall uncertainty, by nearly a factor of 2. The new world average is T-1/2(O-1(4)) = 70619.6(63) ms with a reduced chi(2) value of 0.87 obtained from 8 degrees of freedom.

引用

页数：8

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