CAS OpenIR  > 中科院上海应用物理研究所2011-2020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
2020
Source PublicationPHYSICAL REVIEW C
ISSN0556-2813
Volume102Issue:1Pages:-
Subtype期刊论文
AbstractDirect 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.
KeywordHEAVY-ION COLLISIONS GAMMA-RAY PRODUCTION BREMSSTRAHLUNG PHOTONS NUCLEUS PION HOT
DOI10.1103/PhysRevC.102.014601
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/32794
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
2.Fudan Univ, Inst Modern Phys, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200433, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100080, Peoples R China
4.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China
Recommended Citation
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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):-.
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