Neutron and Alpha Structure in Neutron Deficient Nuclei in Astrophysics

S. Kubono; HE Jianjun; H. Yamaguchi; D. M. Kahl; S. Hayakawa; T. Terani; et al.

doi:10.11804/NuclPhysRev.33.02.212

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Article Navigation > Nuclear Physics Review > 2016 > 33(2): 212-216

S. Kubono, HE Jianjun, H. Yamaguchi, D. M. Kahl, S. Hayakawa, T. Terani, et al.. Neutron and Alpha Structure in Neutron Deficient Nuclei in Astrophysics[J]. Nuclear Physics Review, 2016, 33(2): 212-216. doi: 10.11804/NuclPhysRev.33.02.212

Citation:

S. Kubono, HE Jianjun, H. Yamaguchi, D. M. Kahl, S. Hayakawa, T. Terani, et al.. Neutron and Alpha Structure in Neutron Deficient Nuclei in Astrophysics[J]. Nuclear Physics Review, 2016, 33(2): 212-216. doi: 10.11804/NuclPhysRev.33.02.212

Neutron and Alpha Structure in Neutron Deficient Nuclei in Astrophysics

doi: 10.11804/NuclPhysRev.33.02.212

1.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China;
2.
RIKEN Nishina Center,2-1 Hirosawa, Wako, Saitama 351-0198, Japan;
3.
Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan;
4.
Department of Physics, Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-858, Japan;
5.
Laboratori Nazionali del Sud, Istituto Nazionale di Fisica Nucleare, Via S. So a 62, 95125 Catania, Italy;
6.
Institute for Basic Science, 70, Yuseong-daero 1689-gil, Yuseong-gu, Daejeon 305-81, Korea;
7.
Department of Physics, Tohoku University, Aoba, Sendai, Miyagi 980-8578, Japan;
8.
Department of Physics, Yamagata University, Yamagata 990-8560, Japan;
9.
Institute of Physics, Vietnam Academy for Science and Technology, Hanoi, Vietnam;
10.
Department of Physics, Kyoto University, Kyoto 660-8502, Japan;
11.
IN2P3, F-91405 Orsay, France;
12.
Institute for Nuclear Research (MTA-ATOMKI), Debrecen, Hungary;
13.
TUM, Garching, Germany

Publish Date: 2016-06-20

Abstract

The paper includes discussions on the important role of neutron and alpha configurations in proton-rich nuclei in nuclear astrophysics in terms of nucleosynthesis under extremely high-temperature hydrogenburning conditions. The p-process, which is supposed to take place at the very early epoch of type II supernovae, has considerable neutrons and alphas together with protons. The alpha-induced reactions on proton-rich unstable nuclei in the light mass regions is expected to play a crucial role, but very few of them were investigated well yet because of the experimental difficulties. Specifically, I report our recent experimental effort for the breakout process from the pp-chain region, ⁷Be(α ,γ )¹¹C(α ,p)¹⁴N under the p-process. The neutron-induced reactions on proton-rich nuclei, which is even more a challenging subject, were investigated previously for very few nuclei. One possible experimental method is the Trojan Horse Method (THM). We successfully have applied THM to the 18F(n, )14N reaction study with an unstable beam of ¹⁸F.
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Neutron and Alpha Structure in Neutron Deficient Nuclei in Astrophysics

doi: 10.11804/NuclPhysRev.33.02.212

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China;

2. RIKEN Nishina Center,2-1 Hirosawa, Wako, Saitama 351-0198, Japan;

3. Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan;

4. Department of Physics, Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-858, Japan;

5. Laboratori Nazionali del Sud, Istituto Nazionale di Fisica Nucleare, Via S. So a 62, 95125 Catania, Italy;

6. Institute for Basic Science, 70, Yuseong-daero 1689-gil, Yuseong-gu, Daejeon 305-81, Korea;

7. Department of Physics, Tohoku University, Aoba, Sendai, Miyagi 980-8578, Japan;

8. Department of Physics, Yamagata University, Yamagata 990-8560, Japan;

9. Institute of Physics, Vietnam Academy for Science and Technology, Hanoi, Vietnam;

10. Department of Physics, Kyoto University, Kyoto 660-8502, Japan;

11. IN2P3, F-91405 Orsay, France;

12. Institute for Nuclear Research (MTA-ATOMKI), Debrecen, Hungary;

13. TUM, Garching, Germany

Publish Date: 2016-06-20

Key words:

alpha- and neutron-induced stellar reactions in proton-rich nuclear region /
p-process /
ppchain breakout /
nuclear cluster structures in astrophysics /
low-energy RI beam

Abstract: The paper includes discussions on the important role of neutron and alpha configurations in proton-rich nuclei in nuclear astrophysics in terms of nucleosynthesis under extremely high-temperature hydrogenburning conditions. The p-process, which is supposed to take place at the very early epoch of type II supernovae, has considerable neutrons and alphas together with protons. The alpha-induced reactions on proton-rich unstable nuclei in the light mass regions is expected to play a crucial role, but very few of them were investigated well yet because of the experimental difficulties. Specifically, I report our recent experimental effort for the breakout process from the pp-chain region, ⁷Be(α ,γ )¹¹C(α ,p)¹⁴N under the p-process. The neutron-induced reactions on proton-rich nuclei, which is even more a challenging subject, were investigated previously for very few nuclei. One possible experimental method is the Trojan Horse Method (THM). We successfully have applied THM to the 18F(n, )14N reaction study with an unstable beam of ¹⁸F.

Citation: