Open AccessCluster-assisted multiple ionization of CS2 by intense nanosecond laser beam
Author(s) -
Xue Xiao,
Haiyang Li,
Xiaolin Luo,
Dongmei Niu,
Liping Wen,
Bin Wang,
Feng Liang,
Hou Ke-Yong,
Nazhen Zhang
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.5098
Subject(s) - photoionization , ionization , atomic physics , laser , nanosecond , mass spectrometry , helium , beam (structure) , ion , cluster (spacecraft) , materials science , physics , optics , programming language , quantum mechanics , computer science
Photoionization of CS2 clusters seeded in helium is studied by time-of-flight mass spectrometry using a 25 ns, 532 nm Nd: YAG laser beam of intensity about 8×1010 W/cm2. Multiply charged ions of C2+, S2+ of hundreds of eV have been observed when the laser beam irradiates the most dense portion of the pulsed molecular beam. An electron re-scattering and re-colliding ionization model is proposed to explain the appearance of the multiply charged clusters under such low laser intensity.