Space-Time Evolution of Projectile-Like Fragment Emission for <SUP>40</SUP>Ar +<SUP>nat</SUP>Ag Reaction at 30MeV/u

WANG HongWei; LI ZuYu; HE ZhiYong; DUAN LiMin; ZHANG BaoGuo; FU YanBiao; JIN GenMing; WU HeYu; DAI GuangXi

Chinese Physics C> 2000, Vol. 24> Issue(1) : 35-40

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

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

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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.

References

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[1]	HU Rong-Jiang , WU He-Yu , ZHU Yong-Tai , JIN Gen-Ming , DUAN Li-Min , XIAO Zhi-Gang , WANG Hong-Wei , LI Zu-Yu , WANG Su-Fang , ZHANG Bao-Guo , WEI Zhi-Yong , LU Zhao-Hui , ZHU Hai-Dong , FENG Zhao-Qing , YUAN Xiao-Hua . Isospin Effect on Relative State Population Temperature in the Reactions ⁴⁰Ar+ ^112,124Sn at 30MeV/u. Chinese Physics C, 2004, 28(2): 152-157.
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[5]	WEI ZhiYong , LI ZuYu , LIU YongYing , DUAN LiMin , WU HeYu , ZHANG BaoGuo , WANG HongWei , WANG SuFang , XIAO ZhiGang , LU ZhaoHui , JIN GenMing , ZHU YongTai , HU RongJiang , ZHU HaiDong . Statistical Emission of Hot Nuclei in the 35MeV/u ⁴⁰Ar+¹⁹⁷Au Nuclear Reaction. Chinese Physics C, 2000, 24(12): 1131-1136.
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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.

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Received: 1998-11-11
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 1998-11-11

Accepted Date: 1900-01-01

Available Online: 2000-01-05

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

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

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

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通讯作者: 陈斌, bchen63@163.com

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

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

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