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为给兰州重离子加速器冷却储存环(HIRFL-CSR)注入放射性核束(RIB)提供初始参数,及为CSR上RIB分离谱仪的物理设计提供依据,对最近几年发展起来的利用弹核碎裂(PF)、双消色散分离谱仪在线获取和分离所需RIB的参数计算方法,进行了系统的总结;给设计中的CSR-RIB分离谱仪设定一组束流光学参数,在此基础上对一组具有代表性的反应道的部分参数进行了初步计算,并用GANIL发展的相关程序LISE进行了验证.理论与实验均表明,在目前对PF反应机制尚不能精确描述的情况下,对RIB产额的计算结果达到1~2数量级的精度;对RIB横向发射度和动量散度的计算结果相对准确
In order to provide initial parameters for injecting radioactive nuclear beam (RIB) into Lanzhou Heavy Ion Accelerator Cooling Storage Ring (HIRFL-CSR) and to provide a basis for physical design of RIB separation spectrometer for CSR, Split (PF) and dual-desmut dispersal spectrographs to obtain and separate the required parameters of RIBs on-line and summarize the system systematically. Set a set of beam optical parameters for the CSR-RIB separation spectrometer in the design, Based on a series of representative parameters of the reaction channel, a preliminary calculation was made and verified by LISE, a program developed by GANIL. Both theoretical and experimental results show that the accuracy of RIB output can reach 1 ~ 2 orders of magnitude under the current situation that PF reaction mechanism can not be accurately described. The calculation results of lateral emittance and momentum divergence of RIB are relatively accurate