DECAY PROPERTY OF NA-20 FOR THE ONSET MECHANISM OF THE RAPID-PROTON PROCESS

被引：29

作者：

KUBONO, S

IKEDA, N

FUNATSU, Y

TANAKA, MH

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, CC

OHNUMA, H

ASAHI, K

CHAKRABARTI, A

MUKHOPADHYAY, T

KAJINO, T

机构：

[1] TOHOKU UNIV, CTR CYCLOTRON & RADIOISOTOPE, SENDAI, MIYAGI 980, JAPAN

[2] YAMAGATA UNIV, DEPT PHYS, YAMAGATA 990, JAPAN

[3] RIKEN, WAKO, SAITAMA 35101, JAPAN

[4] UNIV TOKYO, DEPT PHYS, BUNKYO KU, TOKYO 113, JAPAN

[5] UNIV TSUKUBA, TANDEM ACCELERATOR CTR, TSUKUBA, IBARAKI 305, JAPAN

[6] TOKYO INST TECHNOL, DEPT PHYS, TOKYO 152, JAPAN

[7] TOKYO INST TECHNOL, DEPT APPL PHYS, TOKYO 152, JAPAN

[8] BHABHA INST, Kolkata, INDIA

[9] TOKYO METROPOLITAN UNIV, DEPT PHYS, TOKYO 192, JAPAN

来源：

PHYSICAL REVIEW C | 1992年 / 46卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.46.361

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 decay property of Na-20 was studied using a Mg-20 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+ states in Na-20. There is no clear beta decay to the first excited 1+ state above the proton threshold, suggesting that this state would not be the s-wave resonance in the thermal reaction of Ne-19 + p as was expected before. The half-life time of Mg-20 is determined to be 114+/-17 ms. The stellar reaction rate of Ne-19(p, gamma)Na-20 is also discussed based on the present experimental result.

引用

页码：361 / 365

页数：5

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