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