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arXiv · 1308.3868

Multiplicity fluctuation analysis of target residues in nucleus-emulsion collisions at a few hundred MeV/nucleon

D. H. Zhang·Y. L. Chen·G. R. Wang·W. D. Li·Q. Wang·J. J. Yao·J. G. Zhou·S. H. Zhen·L. L. Xu·H. F. Miao·P. Wang
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Abstract

Multiplicity fluctuation of the target evaporated fragments emitted in 290 A MeV 12C-AgBr, 400 A MeV 12C-AgBr, 400 A MeV 20Ne-AgBr and 500 A MeV 56Fe-AgBr interactions is investigated using scaled factorial moment method in two-dimensional normal phase space and cumulative variable space, respectively. It is found that in normal phase space the scaled factorial moment (ln ) increases linearly with increase of the divided number of phase space (lnM) for lower q-value and increases linearly with the increase of lnM and then becomes saturated or decreased for higher q-value, in cumulative variable space ln decreases linearly with increase of lnM, which indicates that no evidence of non-statistical multiplicity fluctuation is observed in our data sets. So any fluctuation indicated in the results of normal variable space analysis is totally caused by non-uniformity of single-particle density distribution.

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D. H. Zhang, Y. L. Chen, G. R. Wang, W. D. Li, Q. Wang, J. J. Yao, J. G. Zhou, S. H. Zhen, L. L. Xu, H. F. Miao, P. Wang. 2013-08-18. Multiplicity fluctuation analysis of target residues in nucleus-emulsion collisions at a few hundred MeV/nucleon. https://doi.org/10.1088/1674-1137%2F38%2F7%2F074001

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