New quasibound states of the compound nucleus in alpha-particle capture by the nucleus

doi:10.1103/PHYSREVc.96.014602

	New quasibound states of the compound nucleus in alpha-particle capture by the nucleus
	Maydanyuk, Sergei P.1,2; Zhang, Peng-Ming1 ; Zou, Li-Ping 1
刊名	PHYSICAL REVIEW C
	2017-07-06
卷号	96 页码:13
ISSN号	2469-9985
DOI	10.1103/PHYSREVc.96.014602
英文摘要	We generalize the theory of nuclear decay and capture of Gamow that is based on tunneling through the barrier and internal oscillations inside the nucleus. In our formalism an additional factor is obtained, which describes distribution of the wave function of the the alpha particle inside the nuclear region. We discover new most stable states (called quasibound states) of the compound nucleus (CN) formed during the capture of alpha particle by the nucleus. With a simple example, we explainwhy these states cannot appear in traditional calculations of the alpha capture cross sections based on monotonic penetrabilities of a barrier, but they appear in a complete description of the evolution of the CN. Our result is obtained by a complete description of the CN evolution, which has the advantages of (1) a clear picture of the formation of the CN and its disintegration, (2) a detailed quantum description of the CN, (3) tests of the calculated amplitudes based on quantum mechanics (not realized in other approaches), and (4) high accuracy of calculations (not achieved in other approaches). These peculiarities are shown with the capture reaction of alpha+Ca-44. We predict quasibound energy levels and determine fusion probabilities for this reaction. The difference between our approach and theory of quasistationary states with complex energies applied for the alpha capture is also discussed. We show (1) that theory does not provide calculations for the cross section of alpha capture (according to modern models of the alpha capture), in contrast with our formalism, and (2) these two approaches describe different states of the a capture (for the same alpha-nucleus potential).
资助项目	China Scholarship Council ; Major State Basic Research Development Program in China[2015CB856903] ; National Natural Science Foundation of China[11575254] ; National Natural Science Foundation of China[11175215] ; Chinese Academy of Sciences fellowships for researchers from developing countries[2014FFJA0003]
WOS关键词	SUBBARRIER FUSION REACTIONS ; HEAVY-ION FUSION ; SUB-BARRIER FUSION ; HALF-LIVES ; COULOMB BARRIER ; CLUSTER RADIOACTIVITY ; SUPERHEAVY NUCLEI ; DECAY PROPERTIES ; RESONANT STATES ; ENERGIES
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000405203500002
资助机构	China Scholarship Council ; Major State Basic Research Development Program in China ; National Natural Science Foundation of China ; Chinese Academy of Sciences fellowships for researchers from developing countries
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/45131]
专题	中国科学院近代物理研究所
通讯作者	Maydanyuk, Sergei P.
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Natl Acad Sci Ukraine, Inst Nucl Res, UA-03680 Kiev, Ukraine
推荐引用方式 GB/T 7714	Maydanyuk, Sergei P.,Zhang, Peng-Ming,Zou, Li-Ping. New quasibound states of the compound nucleus in alpha-particle capture by the nucleus[J]. PHYSICAL REVIEW C,2017,96:13.
APA	Maydanyuk, Sergei P.,Zhang, Peng-Ming,&Zou, Li-Ping.(2017).New quasibound states of the compound nucleus in alpha-particle capture by the nucleus.PHYSICAL REVIEW C,96,13.
MLA	Maydanyuk, Sergei P.,et al."New quasibound states of the compound nucleus in alpha-particle capture by the nucleus".PHYSICAL REVIEW C 96(2017):13.