为拓展单粒子效应实验用离子的LET值上限,在北京HI-13串列加速器上对~(238)U靶锥制备技术、离子源引出技术以及在终端上高电荷态~(238)U离子的引出技术进行了研究,已初步获得不同化合物形式的~(238)U材料对离子源引出流强的数据,并掌握高电荷态~(238)U束流调试技术,已在终端上获得剥离概率为0.1%、能量为330 MeV的~(238)U束流,其LET值为91.2 MeV·cm~(-2)·mg~(-1)。调节高压和像缝宽度后所得最佳能谱示于图1。今后 In order to extend the upper limit of the LET value of single-particle experiment ion, the preparation technology of 238 U target cone, ion source extraction technology and high charge state 238 U ion in the terminal of HI-13 tandem accelerator in Beijing were studied. (238) U materials in different chemical compounds have been initially obtained, and the high charge state (238) U beam current debugging technology has been obtained, and the stripping The LET value of ~ (238) U beam with a probability of 0.1% and an energy of 330 MeV was 91.2 MeV · cm -2 (mg -1). The best spectra obtained after adjusting the high pressure and slit width are shown in Fig.1. from now on