Open AccessSoft-x-ray emission from Ar clusters irradiated by 150fs laser pulses
Author(s) -
Cheng Yuan-Li,
Yijun Zhao,
Xiao Yi-Fan,
Yuanqin Xia,
Jianxin Chen,
Qi Wang
Publication year - 2003
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.52.2453
Subject(s) - laser , atomic physics , irradiation , ionization , materials science , charge (physics) , argon , optics , ion , physics , quantum mechanics , nuclear physics
Soft x-ray emission from Ar clusters irradiated by intense 150 fs laser pulses a t an intensity of5×1015 W/cm2 has been measured with a flat field spe ctrometer. Strong transitions from ArⅧ charge states have been observed, some s pectral lines belong to ArⅫ and ArⅩⅢ. Compared with optical field ionization, the interaction of intense laser pulse with clusters enhances drastically the a bsorption of laser energy and higher charge states are obtained as well. The sig nificant change in the spectrum is attributed to the collisinal heating of small -sized Ar clusters formed at on enough baking pressure of gas.