Direct photon emission and influence of dynamical wave packets in an extended quantum molecular dynamics model

doi:10.1103/PhysRevC.102.014601

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Direct photon emission and influence of dynamical wave packets in an extended quantum molecular dynamics model
	Shi, CZ ; Ma, YG ; Cao, XG ; Fang, DQ ; He, WB ; Zhong, C
刊名	PHYSICAL REVIEW C
	2020
卷号	102 期号:1 页码:-
关键词	HEAVY-ION COLLISIONS GAMMA-RAY PRODUCTION BREMSSTRAHLUNG PHOTONS NUCLEUS PION HOT
ISSN号	0556-2813
DOI	10.1103/PhysRevC.102.014601
文献子类	期刊论文
英文摘要	Direct photon produced from first proton-neutron (p-n) collision during the early stage of heavy ion reaction is a sensitive probe to reflect energy and momentum distribution of nucleons. In this work, we embedded the hard photon production channel in an extended quantum molecular dynamics (EQMD) model, and took the direct photon as a possible probe to improve namely the Fermi motion in the EQMD model. A possible scheme is offered to handle the dynamical wave packet width within incoherent bremsstrahlung process. Direct photons calculated by our modified EQMD were compared with data of N-14 + C-12 at beam energies E/A = 20, 30, and 40 MeV, and it is found that the yield, inverse slope, and angular distribution of direct photons could be reasonably reproduced. In addition, asymmetric reaction systems of He-4 + C and He-4 + Zn at E/A = 53 MeV are also simulated in this work. It is found that the symmetric angular distribution in the nucleon-nucleon (N-N) center-of-mass (can.) frame and the velocity of the gamma-emission source can be reasonably obtained from our method although there is some quantitative difference.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32794]
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.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China 4.Fudan Univ, Inst Modern Phys, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200433, Peoples R China
推荐引用方式 GB/T 7714	Shi, CZ,Ma, YG,Cao, XG,et al. Direct photon emission and influence of dynamical wave packets in an extended quantum molecular dynamics model[J]. PHYSICAL REVIEW C,2020,102(1):-.
APA	Shi, CZ,Ma, YG,Cao, XG,Fang, DQ,He, WB,&Zhong, C.(2020).Direct photon emission and influence of dynamical wave packets in an extended quantum molecular dynamics model.PHYSICAL REVIEW C,102(1),-.
MLA	Shi, CZ,et al."Direct photon emission and influence of dynamical wave packets in an extended quantum molecular dynamics model".PHYSICAL REVIEW C 102.1(2020):-.