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Chin. Phys. B, 2012, Vol. 21(11): 110501    DOI: 10.1088/1674-1056/21/11/110501
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Single source emission of proton projectile fragments in nucleus-emulsion interactions

Zhang Dong-Hai, Li Jun-Sheng, Li Hui-Ling
Institute of Modern Physics, Shanxi Normal University, Linfen 041004, China
Abstract  The projected angular distribution and transverse momentum distribution of proton projectile fragments produced in 3.7A GeV 16O, 500A MeV 56Fe, and 1.7A GeV 84Kr induced different kinds of emulsion targets (H, CNO, and AgBr) interactions are investigated. It is found that the projected angular distribution and transverse momentum distribution can be well represented by a single Gaussian distribution. Comparison of transverse momentum distribution with the Maxwell-Boltzmann distribution reveals that proton projectile fragments are emitted from a single-temperature emission source. The temperature is different for different colliding systems, and linearly depends on the target size.
Keywords:  nucleus-nucleus collision      proton projectile fragments      projectile fragmentation      nuclear emulsion  
Received:  29 March 2012      Revised:  26 May 2012      Published:  01 October 2012
PACS:  05.30.Rt (Quantum phase transitions)  
  52.25.Tx (Emission, absorption, and scattering of particles)  
  52.20.Hv (Atomic, molecular, ion, and heavy-particle collisions)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11075100) and Shanxi Scholarship Council of China (Grant No. 2011-058).
Corresponding Authors:  Zhang Dong-Hai     E-mail:  zhangdh@dns.sxnu.edu.cn

Cite this article: 

Zhang Dong-Hai, Li Jun-Sheng, Li Hui-Ling Single source emission of proton projectile fragments in nucleus-emulsion interactions 2012 Chin. Phys. B 21 110501

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[2] Helium production from 84Kr-- and 197Au--emulsion interactions at high energies
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[3] Disappearance of isospin effect in projectile fragmentation at intermediate energy
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[4] Evidence of intermittent fluctuation of target fragments in 84Kr--AgBr interactions at 1.7 A GeV
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[6] Forward--backward multiplicity correlations in 4.5 A GeV/c 16O--emulsion interactions
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[7] Isoscaling of projectile-like fragments
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[9] Fragmentation in 16O-emulsion interactions at 3.7 A GeV
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[10] Fragmentation of 16O nuclei in nuclear emulsion
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