Fragmentation Cross Sections of ^12C on Different Targets at Beam Energies from 50 to 100 MeV/Nucleon  

作　　者：卞宝安 张丰收 周宏余 

机构地区：[1]The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Department of Material Science and Engineering, Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875 [2]Beijing Radiation Center, Beijing 100875 [3]Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000

出　　处：《Chinese Physics Letters》2008年第2期451-454,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10575012 and 10435020, the Beijing Education Committee under Grant No XK100270454, and the Science Foundation of Beijing Normal University.

摘　　要：The fragmentation cross sections of reactions ^12C＋^2H, ^12C, ^14N, ^16O at beam energies from 50 to 100 MeV/nucleon are investigated using the isospin-dependent Boltzmann-Langevin equation model. It is found that fragment species increase approximately with the increasing target mass. The fragment species and some fragments production cross sections in reactions of ^12C＋^12C, ^14N, ^16O show an obvious variation at the beam energies from 50 to 80 MeV/nucleon. However the calculated fragment production cross sections do not change much when the incident energy increases from 80 to 100 MeV/nucleon.The fragmentation cross sections of reactions ^12C＋^2H, ^12C, ^14N, ^16O at beam energies from 50 to 100 MeV/nucleon are investigated using the isospin-dependent Boltzmann-Langevin equation model. It is found that fragment species increase approximately with the increasing target mass. The fragment species and some fragments production cross sections in reactions of ^12C＋^12C, ^14N, ^16O show an obvious variation at the beam energies from 50 to 80 MeV/nucleon. However the calculated fragment production cross sections do not change much when the incident energy increases from 80 to 100 MeV/nucleon.

关 键 词：PULSARS x-ray spectra relativity and gravitation REDSHIFT 

分 类 号：O571[理学—粒子物理与原子核物理]