Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV <SUP>40</SUP>Ar+<SUP>nat</SUP>Ag Reaction

Li Zuyu; Wang Hongwei; He Zhiyong; Dun Limin; Zhang Baoguo; Dai Guangxi; Fu Yanbiao; Jin Genming

Chinese Physics C> 1998, Vol. 22> Issue(8) : 684-689

Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction

Institute of Modern Physics,THe Chinese Academy of Sciences, Lanzhou 730000

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Abstract：
Fragment-fragment conelation functions have been measured in E/A=30 MeV ⁴⁰Ar+^natAg reaction via the technique of intensity interferometry. Emission times of intermediate mass fragments have been extracted from reduced velocity correlation functions by using the threebody trajectory model. The average emission time of intermediate mass fragments varies with the energy of fragments. It decreases from about 300fm/c for low energy fragments to about 80fm/c for energetic fragments. After subtmcting the contribution of projectile-like fragments, average emission times of mid-rapidity fragments are of the order of 250fm/c for this reaction.It indicates that intermediate mass fragments emitted in this reaction mainly come from sequential binary decays.

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Li Zuyu, Wang Hongwei, He Zhiyong, Dun Limin, Zhang Baoguo, Dai Guangxi, Fu Yanbiao and Jin Genming. Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction[J]. Chinese Physics C, 1998, 22(8): 684-689.

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Received: 1900-01-01
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沈阳化工大学材料科学与工程学院沈阳 110142

Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction

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Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction

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Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV 40Ar+natAg Reaction

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Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV 40Ar+natAg Reaction

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Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction

Time Scsle for Emission of Intermediate Mass Fragments in E/A=30MeV ⁴⁰Ar+^natAg Reaction