Unified description of angular distributions of target particles in light and heavy ion induced interactions in nuclear emulsions at high energies

SUN Zhu

doi:10.1088/1674-1137/33/4/004

Chinese Physics C> 2009, Vol. 33> Issue(4) : 256-262 DOI: 10.1088/1674-1137/33/4/004

Unified description of angular distributions of target particles in light and heavy ion induced interactions in nuclear emulsions at high energies

SUN Zhu ^,

School of Physics and Electronic Science, Shanxi Datong University, Datong 037009, China

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Some investigations show that in light ion (LI) induced reactions, such as He, O, Ne, and Ar in nuclear emulsions (Em) at high energies, the angular distributions of the target particles show a wide structure around the polar angle θ≈60°. With heavy ions (HI) such as Kr and Au such a wide structure has not been observed. The experimental results on Mg—Em and Si—Em interactions also do not show such a wide structure in the angular distribution of the target particles. Using a multisource ideal gas model we uniformly describe the angular distributions of the target particles produced in LI—Em and HI—Em interactions. The result is not only in agreement with the mean trend, but also with the fluctuations of the experimental data. We conclude that the wide structure observed in LI—Em interactions may be the result of statistical fluctuations.

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SUN Zhu. Unified description of angular distributions of target particles in light and heavy ion induced interactions in nuclear emulsions at high energies[J]. Chinese Physics C, 2009, 33(4): 256-262. doi: 10.1088/1674-1137/33/4/004

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Received: 2008-06-19
Revised: 2008-07-24

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沈阳化工大学材料科学与工程学院沈阳 110142

Unified description of angular distributions of target particles in light and heavy ion induced interactions in nuclear emulsions at high energies

Corresponding author: SUN Zhu,

School of Physics and Electronic Science, Shanxi Datong University, Datong 037009, China

Received Date: 2008-06-19

Accepted Date: 2008-07-24

Available Online: 2009-04-05

Abstract:

Some investigations show that in light ion (LI) induced reactions, such as He, O, Ne, and Ar in nuclear emulsions (Em) at high energies, the angular distributions of the target particles show a wide structure around the polar angle θ≈60°. With heavy ions (HI) such as Kr and Au such a wide structure has not been observed. The experimental results on Mg—Em and Si—Em interactions also do not show such a wide structure in the angular distribution of the target particles. Using a multisource ideal gas model we uniformly describe the angular distributions of the target particles produced in LI—Em and HI—Em interactions. The result is not only in agreement with the mean trend, but also with the fluctuations of the experimental data. We conclude that the wide structure observed in LI—Em interactions may be the result of statistical fluctuations.

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Unified description of angular distributions of target particles in light and heavy ion induced interactions in nuclear emulsions at high energies

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