Investigation of two-proton emission from excited states of the odd-Z nucleus 28P by complete-kinematics measurements

被引：23

作者：

Xu, X. X. ^{[1
]}

Lin, C. J. ^{[1
]}

Jia, H. M. ^{[1
]}

Yang, F. ^{[1
]}

Jia, F. ^{[1
]}

Wu, Z. D. ^{[1
]}

Zhang, S. T. ^{[1
]}

Liu, Z. H. ^{[1
]}

Zhang, H. Q. ^{[1
]}

Xu, H. S. ^{[2
]}

Sun, Z. Y. ^{[2
]}

Wang, J. S. ^{[2
]}

Hu, Z. G. ^{[2
]}

Wang, M. ^{[2
]}

Chen, R. F. ^{[2
]}

Zhang, X. Y. ^{[2
]}

Li, C. ^{[2
]}

Lei, X. G. ^{[2
]}

Xu, Z. G. ^{[2
]}

Xiao, G. Q. ^{[2
]}

Zhan, W. L. ^{[2
]}

机构：

[1] China Inst Atom Energy, Beijing 102413, Peoples R China

[2] Chinese Acad Sci, Inst Modern Phys, Lanzhou 73000, Peoples R China

来源：

PHYSICAL REVIEW C | 2010年 / 81卷 / 05期

基金：

中国国家自然科学基金;

关键词：

DECAY; HALO; EXCITATION; RESONANCE;

D O I：

10.1103/PhysRevC.81.054317

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：

An experiment to study exotic two-proton emission from excited levels of the odd-Z nucleus P-28 was performed at the National Laboratory of Heavy Ion Research-Radioactive Ion Beam Line (HIRFL-RIBLL) facility. The projectile P-28 at the energy of 46.5 MeV/u was bombarding a Au-197 target to populate the excited states via Coulomb excitation. Complete-kinematics measurements were realized by the array of silicon strip detectors and the CsI + PIN telescope. Two-proton events were selected and the relativistic-kinematics reconstruction was carried out. The spectrum of relative momentum and opening angle between two protons was deduced from Monte Carlo simulations. Experimental results show that two-proton emission from P-28 excited states less than 17.0 MeV is mainly two-body sequential emission or three-body simultaneous decay in phase space. The present simulations cannot distinguish these two decay modes. No obvious diproton emission was found.

引用

页数：5

共 11 条

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Xu, H. S.
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Hu, Z. G.
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PHYSICAL REVIEW C, 2010, 82 (06):
[2] Two-proton emission from excited states of proton-rich nuclei
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[3] Two-proton correlated emission from 18Ne excited states
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[6] Experimental study of two-proton correlated emission from 29S excited states
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[7] Experimental study of the two-proton correlated emission from the excited states of 17,18Ne and 28,29S
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[8] Microscopic investigation of one- and two-proton decay from the excited states of 10C
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[9] Recent experimental results of two-proton correlated emission from the excited states of 17,18Ne and 28,29S
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[10] Decay of 10C excited states above the 2p+2α threshold and the contribution from "democratic" two-proton emission
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