Open AccessCluster-assisted multiple ionization of acetone by intense nanosecond laser
Author(s) -
Xiao Xue,
Haiyang Li,
Xiaolin Luo,
Dongmei Niu,
Lihua Wen,
Bin Wang,
Liang Feng,
Keyong Hou,
Can Dong,
Shao Shiyong
Publication year - 2006
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.661
Subject(s) - cluster (spacecraft) , ionization , nanosecond , laser , acetone , materials science , atomic physics , physics , computer science , optics , chemistry , ion , quantum mechanics , organic chemistry , programming language
The photoionization of acetone seeded in helium is studied by time_of_flight mass spectrometry using a 25 ns, 532 nm Nd: YAG laser with intensity in the range of 1010—1011 W/cm2. Multiply charged ions of Op+(p=2—4) and Cq+(q=2—4) of tens of eV have been observed when the laser beam irradiates the most dense part of the pulsed molecular beam. The intensity and the kinetic energy of the multiply charged ions increase with the increasing of the laser energy. An electron re_scattering and re_colliding ionization model is proposed to explain the appearance of the multiply charged ions under such low laser intensity.