利用兰州放射性束流线RIBLL测量反应总截面的方法

A Scheme for the Measurement of Total Reaction Cross Section at RIBLL

介绍了一种利用兰州放射性束流线(RIBLL)测量反应总截面的方法.该方法将束流线的前半段作为所需放射性核的传输和选择,将反应靶置于束流线的中间焦点处,使我们在反应靶前和靶后都可以清晰地分辨出粒子.将该方法得到的截面值与传统ΔE-E方法得到的截面值进行了比较,并指出了该方法的优、缺点.

A new method of measuring total reaction cross section with RIBLL （radioactive ion beam line in Lanzhou） is introduced in this paper. The first section of the beam line is used for transportation and selection of the radioactive nuclei needed and the reaction target is installed at the intermediate focusing point of RIBLL. This scheme allows us to identify the particles before and after the reaction target unambiguously. The experimental results obtained with this method have been compared with those from traditional △ E-E method. The advantages and disadvantages of this method are discussed in this paper.