Space-Time Evolution of Projectile-Like Fragment Emission for 40Ar +natAg Reaction at 30MeV/u

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WANG HongWei, LI ZuYu, HE ZhiYong, DUAN LiMin, ZHANG BaoGuo, FU YanBiao, JIN GenMing, WU HeYu and DAI GuangXi. Space-Time Evolution of Projectile-Like Fragment Emission for 40Ar +natAg Reaction at 30MeV/u[J]. Chinese Physics C, 2000, 24(1): 35-40.
WANG HongWei, LI ZuYu, HE ZhiYong, DUAN LiMin, ZHANG BaoGuo, FU YanBiao, JIN GenMing, WU HeYu and DAI GuangXi. Space-Time Evolution of Projectile-Like Fragment Emission for 40Ar +natAg Reaction at 30MeV/u[J]. Chinese Physics C, 2000, 24(1): 35-40. shu
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Received: 1998-11-11
Revised: 1900-01-01
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Space-Time Evolution of Projectile-Like Fragment Emission for 40Ar +natAg Reaction at 30MeV/u

    Corresponding author: WANG HongWei,
  • Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

Abstract: The emission time of intermediate mass fragments (IMF) has been studied as a function of spatial evolution of the emission source for 40Ar+natAg reaction at 30MeV/u, and the spatial-time evolution of projectile-like fragments emission has also been discussed. The investigation for spatial-time evolution of the reaction system shows that the emission time of the IMF mainly depends on the correlation functions and the density of nuclear matter, and that it is not sensitive to the mass number of emitting sources. For high-energy fragments, a smaller nuclear density would lead to a smaller assignment for emission time τ; therefor the τ values extracted from the normal nuclear density could be taken as upper limits of real τ values. For the mid-velocity fragments, their emission times do not change with size of the source and these τ values could be taken as the real values directly.

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