Precision half-life measurement of F-17
文献类型：期刊论文
| 作者 | Brodeur, M.4; Nicoloff, C.4,6; Ahn, T.4; Hu, J.2,4 ; Kelly, J. M.4; Kolata, J. J.4; Long, J.4; O'Malley, P.4; Schultz, B. E.4; Allen, J.4
|
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2016-02-23 |
| 卷号 | 93页码:7 |
| ISSN号 | 2469-9985 |
| DOI | 10.1103/PhysRevC.93.025503 |
| 英文摘要 | Background: The precise determination of f t values for superallowed mixed transitions between mirror nuclide are gaining attention as they could provide an avenue to test the theoretical corrections used to extract the V-ud matrix element from superallowed pure Fermi transitions. The F-17 decay is particularly interesting as it proceeds completely to the ground state of O-17, removing the need for branching ratio measurements. The dominant uncertainty on the f t value of the F-17 mirror transition stems from a number of conflicting half-life measurements. Purpose: A precision half-life measurement of F-17 was performed and compared to previous results. Methods: The life-time was determined from the beta counting of implanted F-17 on a Ta foil that was removed from the beam for counting. The F-17 beam was produced by transfers reaction and separated by the TwinSol facility of the Nuclear Science Laboratory of the University of Notre Dame. Results: The measured value of t(1/2)(new) = 64.402 (42) s is in agreement with several past measurements and represents one of the most precise measurements to date. In anticipation of future measurements of the correlation parameters for the decay and using the new world average t(1/2)(world) = 64.398 (61) s, we present a new estimate of the mixing ratio rho for the mixed transition as well as the correlation parameters based on assuming Standard Model validity. Conclusions: The relative uncertainty on the new world average for the half-life is dominated by the large chi(2) = 31 of the existing measurements. More precision measurements with different systematics are needed to remedy to the situation. |
| WOS关键词 | NUCLEAR BETA-DECAY ; LIVES ; HISTOGRAMS ; SQUARE ; FITS |
| 资助项目 | National Science Foundation (NSF)[PHY-1419765] ; National Science Foundation (NSF)[PHY-1401343] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000370799200002 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | National Science Foundation (NSF) |
| 源URL | [http://119.78.100.186/handle/113462/41853]  |
| 专题 | 近代物理研究所_实验物理中心 |
| 通讯作者 | Brodeur, M. |
| 作者单位 | 1.Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA 4.Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA 5.Bhabha Atom Res Ctr, Div Nucl Phys, Bombay 400085, Maharashtra, India 6.Wellesley Coll, Dept Phys, Wellesley, MA 02481 USA |
| 推荐引用方式 GB/T 7714 | Brodeur, M.,Nicoloff, C.,Ahn, T.,et al. Precision half-life measurement of F-17[J]. PHYSICAL REVIEW C,2016,93:7. |
| APA | Brodeur, M..,Nicoloff, C..,Ahn, T..,Hu, J..,Kelly, J. M..,...&Hall, O..(2016).Precision half-life measurement of F-17.PHYSICAL REVIEW C,93,7. |
| MLA | Brodeur, M.,et al."Precision half-life measurement of F-17".PHYSICAL REVIEW C 93(2016):7. |
入库方式： OAI收割
来源：近代物理研究所
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