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The medium effect of in-medium nucleon-nucleon cross sectionσ_(NN)~(med)(αm) on the isoscaling parameterαis investigated for two couples of central nuclear reactions ~(40)Ca+~(48)Ca and ~(60)Ca+~(48)Ca; ~(112)Sn+~(112)Sn and ~(124)Sn+~(124)Sn at beam energy region from 40 to 60 MeV/u with isospin dependent quantum molecular dy-
The medium effect of in-medium nucleon-nucleon cross section (NN) ~ (med) (αm) on the isoscaling parameter αis investigated for two couples of central nuclear reactions ~ (40) Ca + ~ (48) Ca and ~ ~ (48) Ca; ~ (112) Sn + ~ (112) Sn and ~ (124) Sn + ~ (124) Sn at beam energy region from 40 to 60 MeV / u with isospin dependent quantum molecular dy-