Observation of the astrophysically important 3+ state in 18Ne via elastic scattering of a radioactive 17P beam from 1H

被引：126

作者：

Bardayan, DW ^{[1
]}

Blackmon, JC

Brune, CR

Champagne, AE

Chen, AA

Cox, JM

Davinson, T

Hansper, VY

Hofstee, MA

Johnson, BA

Kozub, RL

Ma, Z

Parker, PD

Pierce, DE

Rabban, MT

Shotter, AC

Smith, MS

Swartz, KB

Visser, DW

Woods, PJ

机构：

[1] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

[2] Yale Univ, AW Wright Nucl Struct Lab, New Haven, CT 06511 USA

[3] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[4] Tennessee Technol Univ, Dept Phys, Cookeville, TN 38505 USA

[5] Univ Edinburgh, Dept Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland

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

[7] Chinese Inst Atom Energy, Beijing 102413, Peoples R China

[8] Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.83.45

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The F-17(p, gamma)Ne-18 reaction is important in stellar explosions, but its rate has been uncertain because of an expected 3(+) state in Ne-18 that has never been conclusively observed. This state would provide a strong l = 0 resonance and, depending an its excitation energy, could dominate the stellar reaction rate. We have observed this missing 3(+) state by measuring the H-1(F-17, p)F-17 excitation function with a radioactive F-17 beam at the ORNL Holifield Radioactive Ion Beam Facility, We find that the state lies at a center-of-mass energy of E-r = 599.8 +/- 1.5(stat) +/- 2.0(sys) keV (E-x = 4523.7 +/- 2.9 keV) and has a width of Gamma = 18 +/- 2(stat) +/- 1(sys) keV.

引用

页码：45 / 48

页数：4

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