Decay property of sup 20 Na for the onset mechanism of the rapid-proton process

Journal Article · Wed Jul 01 00:00:00 EDT 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.46.361· OSTI ID:7043853

Kubono, S; Ikeda, N; Funatsu, Y; Tanaka, M H; Nomura, T; Orihara, H; Kato, S; Ohura, M; Kubo, T; Inabe, N; Yoshida, A; Ichihara, T; Ishihara, M; Tanihata, I; Okuno, H; Nakamura, T; Shimoura, S; Toyokawa, H; Yun, C C; Ohnuma, H ; Asahi, K; Chakrabarti, A; Mukhopadhyay, T; Kajino, T ^[1]

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1. Institute for Nuclear Study, University of Tokyo, Tanashi, Tokyo, 188 (Japan) The Cyclotron and Radioisotope Center, Tohoku University, Sendai, 980 (Japan) Department of Physics, Yamagata University, Yamagata, 990 (Japan) RIKEN, Wako, Saitama, 351-01 (Japan) Department of Physics, Univeristy of Tokyo, Bunkyo, Tokyo, 113 (Japan) Tandem Accelerator Center, University of Tsukuba, Tsukuba, Ibaraki, 305 (Japan) Department of Physics, Tokyo Institute of Technology, Megro, Tokyo, 152 (Japan) Department of Applied Physics, Tokyo Institute of Technology, Megro, Tokyo, 152 (Japan) Bhabha Institute, Cal cutta (India) Department of Physics, Tokyo Metropolitan University, Hachiohji, Tokyo, 192 (Ja

The decay property of {sup 20}Na was studied using a {sup 20}Mg beam to learn better the onset mechanism of the rapid-proton process. The delayed protons were successfully measured, which correspond to one of the possible 1{sup +} states in {sup 20}Na. There is no clear beta decay to the first excited 1{sup +} state above the proton threshold, suggesting that this state would not be the {ital s}-wave resonance in the thermal reaction of {sup 19}Ne+{ital p} as was expected before. The half-life time of {sup 20}Mg is determined to be 114{plus minus}17 ms. The stellar reaction rate of {sup 19}Ne({ital p},{gamma}){sup 20}Na is also discussed based on the present experimental result.

• OSTI ID: 7043853
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 46:1; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
MAGNESIUM 20
HALF-LIFE
SODIUM 20
ENERGY LEVELS
PROTON-EMISSION DECAY
BETA-PLUS DECAY
ELECTROMAGNETIC RADIATION
NOVAE
NUCLEOSYNTHESIS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
DAYS LIVING RADIOISOTOPES
DECAY
ERUPTIVE VARIABLE STARS
EVEN-EVEN NUCLEI
ISOTOPES
LIGHT NUCLEI
MAGNESIUM ISOTOPES
MILLISEC LIVING RADIOISOTOPES
NUCLEAR DECAY
NUCLEI
ODD-ODD NUCLEI
RADIATIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SODIUM ISOTOPES
STARS
SYNTHESIS
VARIABLE STARS
YEARS LIVING RADIOISOTOPES
663530* - Nuclear Mass Ranges- A=20-38- (1992-)