NDLI: Influence of coalescence parameters on the production of protons and Helium-3 fragments

Content Provider	Springer Nature Link
Author	Li, QingFeng Wang, YongJia Wang, XiaoBao Shen, CaiWan
Copyright Year	2016
Abstract	The time evolution of protons and $^{3}$He fragments from Au+Au/Pb+Pb reactions at 0.25, 2, and 20 GeV/nucleon is investigated with the potential version of the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) model combined with the traditional coalescence afterburner. In the coalescence process, the relative distance R $_{0}$ and relative momentum P $_{0}$ are surveyed in the range of 3-4 fm and 0.25-0.35 GeV/c, respectively. For both clusters, a strong reversed correlation between R $_{0}$ and P $_{0}$ is seen and it is time-dependent as well. For protons, the accepted (R $_{0}$, P $_{0}$) bands lie in the time interval 30-60 fm/c, while for 3He, a longer time evolution (at about 60-90 fm/c) is needed. Otherwise, much smaller R $_{0}$ and P $_{0}$ values should be chosen. If we further look at the rapidity distributions from both central and semi-central collisions, it is found that the accepted [t $_{cut}$, (R $_{0}$, P $_{0}$)] assemble can provide consistent results for proton yield and collective flows especially at mid-rapdities, while for $^{3}$He, the consistency is destroyed at both middle and projectile-target rapidities.
Starting Page	1
Ending Page	6
Page Count	6
File Format	PDF
ISSN	16747348
Journal	Science in China Series G
Volume Number	59
Issue Number	7
e-ISSN	18691927
Language	English
Publisher	Science China Press
Publisher Date	2016-05-24
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	coalescence afterburner UrQMD model light clusters dynamical process Physics Classical Continuum Physics Astronomy, Observations and Techniques
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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