Controllable generation of highly stripped ions with different charges by nanosecond laser ionization of clusters at different wavelengths

Niu, Dongmei; Li, Haiyang; Liang, Feng; Luo, Xiaolin; Wen, Lihua
July 2005
Applied Physics Letters;7/18/2005, Vol. 87 Issue 3, p034103
Academic Journal
We report an effective method to selectively produce highly charged ions by photoionization of cluster beams using commercial nanosecond Nd:yttrium–aluminum–garnet lasers at different wavelengths. He-like ions of C4+, N5+, O6+, S6+ and highly charged Xeq+ (q∼19) ions are produced when cluster beams of benzene, ammonia, acetone, hydrogen sulfide, and xenon are irradiated, respectively, by 1064 nm laser with intensity of ∼1011 W/cm2. While the cluster beams are irradiated by 532 nm laser of similar intensity, the ions of the highest charge state switch to C3+, N3+, O3+, S4+ and Xe11+, respectively.


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