Emission Time of Light Particles and Lifetime of Hot Nuclei Followed by Binary Fission

He Zhiyong; Jin Genming; Li Zuyu; Duan Limin; Wu Heyu; Dai Guangxi; Zhang Baoguo; Wen Wanxin; Qi Yujin; Luo Qingzheng

Chinese Physics C> 1996, Vol. 20> Issue(7) : 596-600

Emission Time of Light Particles and Lifetime of Hot Nuclei Followed by Binary Fission

Institute of Moden Physics, The Chinese Academy of Sciences, Lanzhou 730000

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Abstract：
Particle-particle correlation function and emission time of light particles detected in coincidence with fission fragments have been measured for the ⁴⁰Ar+¹⁹⁷Au collisions at E/A=25MeV. A mean emission time of 200-300fm/c suggests that the prescission emission of light particles dominates. The emission time changes slightly for particles of in-plane emission and out-of-plane emission, but varies dramatically with the energy of particles. It decreases from about 300fm/c for mid-rapidity particles to about 30-100fm/c for projectile-like particles.

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He Zhiyong, Jin Genming, Li Zuyu, Duan Limin, Wu Heyu, Dai Guangxi, Zhang Baoguo, Wen Wanxin, Qi Yujin and Luo Qingzheng. Emission Time of Light Particles and Lifetime of Hot Nuclei Followed by Binary Fission[J]. Chinese Physics C, 1996, 20(7): 596-600.

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Received: 1900-01-01
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

Emission Time of Light Particles and Lifetime of Hot Nuclei Followed by Binary Fission

Corresponding author: He Zhiyong,

Institute of Moden Physics, The Chinese Academy of Sciences, Lanzhou 730000

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1996-07-05

Abstract: Particle-particle correlation function and emission time of light particles detected in coincidence with fission fragments have been measured for the ⁴⁰Ar+¹⁹⁷Au collisions at E/A=25MeV. A mean emission time of 200-300fm/c suggests that the prescission emission of light particles dominates. The emission time changes slightly for particles of in-plane emission and out-of-plane emission, but varies dramatically with the energy of particles. It decreases from about 300fm/c for mid-rapidity particles to about 30-100fm/c for projectile-like particles.

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Emission Time of Light Particles and Lifetime of Hot Nuclei Followed by Binary Fission

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