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Phys. Rev. C 59, 1182–1184 (1999)

High-resolution study of the 18Ne excited states relevant to the hot CNO cycle

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S. H. Park1, S. Kubono2, K. I. Hahn3, C. S. Lee4, J. C. Kim1, P. Strasser3, S. C. Jeong5, M. H. Tanaka5, C. Lee1, J. H. Lee4, S. Kato6, T. Miyachi2, H. Kawashima2, H. Utsunomiya7, M. Yasue8, M. Kurokawa3, Y. Fuchi5, X. Liu2, K. Abe2,9, K. Kumagai2,10, M. S. Smith11, and P. D. Parker12
1Department of Physics, Seoul National University, Seoul 151-742, South Korea
2Center for Nuclear Study (CNS), University of Tokyo, 3-2-1 Midoricho, Tanashi, Tokyo 188, Japan
3RIKEN, Hirosawa, 2-1 Wako, Saitama 351-01, Japan
4Department of Physics, Chung-Ang University, Seoul 156-756, South Korea
5IPNP-Tanashi, KEK, Tanashi, Tokyo 188, Japan
6Physics Department, Yamagata University, Yamagata 990, Japan
7Department of Physics, Konan University, Higashi-Nada, Kobe 658, Japan
8Miyagi University of Education, Aoba-ku, Sendai 980, Japan
9Physics Department, Yamagata University, Yamagata 990, Japan
10Physics Department, Tohoku University, Sendai 980, Japan
11Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6354
12Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520-8124

Received 8 June 1998; published in the issue dated February 1999

The 20Ne(p,t)18Ne reaction has been studied in order to investigate the properties of 18Ne excited states. A missing 3+ state of 18Ne, which could have a great influence on the 17F(p,γ)18Ne reaction rate, was searched for, but the existence of this state was not clearly verified. The spins and parities of the 5.11- and 5.15-MeV states were assigned tentatively by angular distribution measurements, as 2+ and 3-, respectively. We were able to resolve the doublets at 4.5, 5.1, and 6.3 MeV clearly for the first time due to our high precision system, which allowed us to determine the widths of some critical states above the proton threshold of 18Ne more precisely.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.59.1182
DOI:
10.1103/PhysRevC.59.1182
PACS:
26.20.+f, 25.40.Hs, 27.20.+n
 
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