Searching for states analogous to the C-12 Hoyle state in heavier nuclei using the thick target inverse kinematics technique

doi:10.1103/PhysRevC.98.044601

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	Searching for states analogous to the C-12 Hoyle state in heavier nuclei using the thick target inverse kinematics technique
	Barbui, M ; Hagel, K ; Gauthier, J ; Wuenschel, S ; Wada, R ; Goldberg, VZ ; deSouza, RT ; Hudan, S ; Fang, D ; Cao, XG
刊名	PHYSICAL REVIEW C
	2018
卷号	98 期号:4 页码:-
关键词	MEV EXCITATION ENERGY-LEVELS O-16 DECAY
ISSN号	2469-9985
DOI	10.1103/PhysRevC.98.044601
文献子类	期刊论文
英文摘要	Identification of alpha-cluster states analogous to the C-12 Hoyle state in heavier alpha-conjugate nuclei can provide test of the existence of alpha condensates in nuclei. Such states are predicted for O-160, Ne-20, Mg-24, Si-28, etc., at excitation energies slightly above the multi- alpha-particle decay threshold but have not yet been experimentally identified. The thick target inverse kinematics (TTIK) technique can be used to study the breakup of excited self-conjugate nuclei into many a particles. The reaction Ne-20 + alpha was studied using a Ne-20 beam at 12 MeV/nucleon from the K150 cyclotron at Texas A&M University. The TTIK method was used to study both single alpha-particle emission and multiple alpha-particle decays. Events with a multiplicity up to four were analyzed. The analysis of the three alpha-particle emission data allowed the identification of the Hoyle state and other C-12 excited states decaying into three alpha particles. The results are shown and compared with other data available in the literature. Although the statistics for events with alpha-multiplicity four is low, the data show a structure at about 15.2 MeV that could indicate the existence in O-16 of a state analogous to the C-12 Hoyle state. Moreover, the reconstructed excitation energy of Mg-24 for these events peaks at around 34 MeV, very close to the predicted excitation energy for an excited state analogous to the C-12 Hoyle state in Mg-24. The structure is further confirmed by the reanalysis of alpha-multiplicity-four events from a previous experiment performed at 9.7 MeV/nucleon with a similar, but lower granularity, experimental setup.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31098]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Indiana Univ, Bloomington, IN 47405 USA 2.Texas A&M Univ, Cyclotron Inst, MS3366, College Stn, TX 77843 USA 3.Chinese Acad Sci, Shanghai Inst Appl Phys SINAP, Shanghai, Peoples R China
推荐引用方式 GB/T 7714	Barbui, M,Hagel, K,Gauthier, J,et al. Searching for states analogous to the C-12 Hoyle state in heavier nuclei using the thick target inverse kinematics technique[J]. PHYSICAL REVIEW C,2018,98(4):-.
APA	Barbui, M.,Hagel, K.,Gauthier, J.,Wuenschel, S.,Wada, R.,...&Natowitz, JB.(2018).Searching for states analogous to the C-12 Hoyle state in heavier nuclei using the thick target inverse kinematics technique.PHYSICAL REVIEW C,98(4),-.
MLA	Barbui, M,et al."Searching for states analogous to the C-12 Hoyle state in heavier nuclei using the thick target inverse kinematics technique".PHYSICAL REVIEW C 98.4(2018):-.