Chinese Physics C > 1997, Vol. 21 > Issue(S3): 43-50

Energetic Protons and Cold Nuclear Multifragmentation Pattern

1. Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou, China;
2. Laboratoire de Physique QuanEique, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex, France;
3. SUBATECH, Université de Nates/IN2 P3/Ecole des Mines de Nantes, 44070 Nantes Cedex 03, France

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Abstract：
Multifragmentation is studied in correlation with energetic protons. A cold multifragmentation pattern is proposed based on the numerical simulation of the stochastic Boltzmann-Langevin model to describe the intermediate heavy ion collisions, i.e, a sizeable fraction of the available energy is released from the system by fast non-equilibrium proton emission, in which the explosion is caused by a violent but cold expansion of the system. Some typical examples simulated for ⁴⁰Ca+ ⁴⁰Ca central collisions at 90 MeV/u are presented. A possible experimental signature which could be detected using a 4 πdetector system is suggested.
- cold nuclear multifragmentation pattern,
- energetic protons,
- stochastic transport theory

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Zhang Fengshou, E. Suraud and J. L. Laville. Energetic Protons and Cold Nuclear Multifragmentation Pattern[J]. Chinese Physics C, 1997, 21(S3): 43-50.

Zhang Fengshou, E. Suraud and J. L. Laville. Energetic Protons and Cold Nuclear Multifragmentation Pattern[J]. Chinese Physics C, 1997, 21(S3): 43-50. shu

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Received: 1996-03-20

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Supported by the Foundation of the Chinese Academy of Sciences and the Post-Doctor Function and the National Natural Science Foundation of China.

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Energetic Protons and Cold Nuclear Multifragmentation Pattern

1. Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou, China;
2. Laboratoire de Physique QuanEique, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex, France;
3. SUBATECH, Université de Nates/IN2 P3/Ecole des Mines de Nantes, 44070 Nantes Cedex 03, France

Received Date:1996-03-20

Fund Project:Supported by the Foundation of the Chinese Academy of Sciences and the Post-Doctor Function and the National Natural Science Foundation of China.

Abstract:Multifragmentation is studied in correlation with energetic protons. A cold multifragmentation pattern is proposed based on the numerical simulation of the stochastic Boltzmann-Langevin model to describe the intermediate heavy ion collisions, i.e, a sizeable fraction of the available energy is released from the system by fast non-equilibrium proton emission, in which the explosion is caused by a violent but cold expansion of the system. Some typical examples simulated for⁴⁰Ca+⁴⁰Ca central collisions at 90 MeV/u are presented. A possible experimental signature which could be detected using a 4πdetector system is suggested.