Off-line Study of a Laser Ion Source via Direct Ionization at the He-jet Outlet   

作　　者：尚仁成 徐四大 张书明 叶子飘 张伟 赵之正 罗亦孝 

出　　处：《Tsinghua Science and Technology》1996年第3期14-18,共5页清华大学学报（自然科学版（英文版）

基　　金：Supported by the National Natural Scie-nce Foundation of China

摘　　要：A laser ion source based on laser resonant ionization (RI) at the He jet outlet was proposed for the ISOL(on line isotope separator) of HIRFL (Heavy Ion Research Facility in Lanzhou, China) a few years ago . An off line test setup was built at Tsinghua University,Beijing. Initial experimental results indicate that carrying neutral Na monoatoms to the He jet outlet and then using laser resonant ionization of Na atoms in the He jet beam are very efficient. This provides a highly efficient method for producing Z selected ions with low background and short delay time. This method is useful in the separation of various elements, particularly, refractory elements.A laser ion source based on laser resonant ionization (RI) at the He jet outlet was proposed for the ISOL(on line isotope separator) of HIRFL (Heavy Ion Research Facility in Lanzhou, China) a few years ago . An off line test setup was built at Tsinghua University,Beijing. Initial experimental results indicate that carrying neutral Na monoatoms to the He jet outlet and then using laser resonant ionization of Na atoms in the He jet beam are very efficient. This provides a highly efficient method for producing Z selected ions with low background and short delay time. This method is useful in the separation of various elements, particularly, refractory elements.

关 键 词：ion source LASER He  jet 

分 类 号：TL629.1[核科学技术—核技术及应用]