Study of Heavy-ion Projectile Fragmentation in Intermediate Energy

WANG Lichun; CHENG Jinxia; LI Yanjing; JIANG Xiang; YAN Shiwei

doi:10.11804/NuclPhysRev.30.02.107

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WANG Lichun, CHENG Jinxia, LI Yanjing, JIANG Xiang, YAN Shiwei. Study of Heavy-ion Projectile Fragmentation in Intermediate Energy[J]. Nuclear Physics Review, 2013, 30(2): 107-116. doi: 10.11804/NuclPhysRev.30.02.107

Citation:

WANG Lichun, CHENG Jinxia, LI Yanjing, JIANG Xiang, YAN Shiwei. Study of Heavy-ion Projectile Fragmentation in Intermediate Energy[J]. Nuclear Physics Review, 2013, 30(2): 107-116. doi: 10.11804/NuclPhysRev.30.02.107

Study of Heavy-ion Projectile Fragmentation in Intermediate Energy

doi: 10.11804/NuclPhysRev.30.02.107

College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2013-06-20

Abstract

We have measured the fragmentation cross sections and the emission angles for 471 AMeV ⁵⁶Fe and 400AMeV ²⁰Ne on Al, C and CH₂ targets using CR-39 plastic nuclear track detector. The total charge changing cross sections agree well with other previous experimental results at different energies and the theoretical prediction of Bradt-Peters semiempirical formula, which are pproximately independent of the beam energy but increase with the increase of the target mass. The experimental results are compared with the prediction of the improved quantum molecular dynamical model (ImQMD) together with the GEMINI model. The odd-even effect of the partial cross sections observed in experiments is well produced. It is found that such effect is mainly formed in the grazing collisions and comes from the fragments with T_Z = 0; ±0:5. The shape of the isotopic distribution is independent on the target mass and the incident energy but the projectile mass and charge, and the small angular distribution of all fragments comes from the heavier projectile-like fragments which produced in the peripheral collision.
- partial charge-changed cross section,
- CR-39 detector,
- ImQMD model,
- GEMINI model,
- odd-even effect,
- isospin effect
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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

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Study of Heavy-ion Projectile Fragmentation in Intermediate Energy

doi: 10.11804/NuclPhysRev.30.02.107

College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2013-06-20

Key words:

Abstract: We have measured the fragmentation cross sections and the emission angles for 471 AMeV ⁵⁶Fe and 400AMeV ²⁰Ne on Al, C and CH₂ targets using CR-39 plastic nuclear track detector. The total charge changing cross sections agree well with other previous experimental results at different energies and the theoretical prediction of Bradt-Peters semiempirical formula, which are pproximately independent of the beam energy but increase with the increase of the target mass. The experimental results are compared with the prediction of the improved quantum molecular dynamical model (ImQMD) together with the GEMINI model. The odd-even effect of the partial cross sections observed in experiments is well produced. It is found that such effect is mainly formed in the grazing collisions and comes from the fragments with T_Z = 0; ±0:5. The shape of the isotopic distribution is independent on the target mass and the incident energy but the projectile mass and charge, and the small angular distribution of all fragments comes from the heavier projectile-like fragments which produced in the peripheral collision.