Back to Search Start Over

Enhancement of soft x-ray emission from a cryogenically cooled Ar gas jet irradiated by 25 fs laser pulse.

Authors :
Mocek, T.
Kim, C. M.
Shin, H. J.
Lee, D. G.
Cha, Y. H.
Hong, K. H.
Nam, C. H.
Source :
Applied Physics Letters; 4/3/2000, Vol. 76 Issue 14, 3 Graphs
Publication Year :
2000

Abstract

Soft x-ray spectra (40-180 Å) produced by the interaction of 25 fs laser pulses at an intensity of ∼7x10[sup 16] W/cm[sup 2] with a cryogenically cooled Ar gas jet have been measured. New spectral lines from Ar[sup 8+] and Ar[sup 9+] charge states appeared with decreasing gas temperature. Nonlinear increase of x-ray line emission from Ar[sup 7+], Ar[sup 8+], and Ar[sup 9+] was observed with cooling, which saturated below certain temperature. The drastic change in the spectrum is attributed to efficient collisional heating and collisional ionization of growing (10[sup 2]-10[sup 3] atoms) Ar clusters from the cooled jet. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Subjects

Subjects :
ARGON
ULTRASHORT laser pulses

Details

Language :
English
ISSN :
00036951
Volume :
76
Issue :
14
Database :
Complementary Index
Journal :
Applied Physics Letters
Publication Type :
Academic Journal
Accession number :
4412940
Full Text :
https://doi.org/10.1063/1.126176