X-ray pulse emission from cesium chloride aqueous solutions when irradiated by double-pulsed femtosecond laser pulses

Journal Article · Mon Aug 11 00:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2967882· OSTI ID:21124077

Hatanaka, Koji ^[1]; Ono, Hiroshi; Fukumura, Hiroshi ^[2]

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1. Center for Ultrafast Intense Laser Science, Graduate School of Science, University of Tokyo, Tokyo 113-0033 (Japan)
2. Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578 (Japan)

The intensity of x-ray emission from the aqueous solutions irradiated with focused femtosecond laser pulses (main pulses and relatively low-intensity prepulses) was measured as a function of the delay time between the main pulses and prepulses. Four different x-ray intensity peaks were observed in the picosecond and nanosecond ranges. The prepulse irradiation caused an increase in the x-ray intensity by a factor of 10{sup 3}-10{sup 4}, as confirmed by x-ray emission spectroscopy. Time-resolved reflectance measurements and imaging revealed that the increase was caused by the solution surface dynamics such as the picosecond plasma formation and decay and the transient (nanoseconds) surface roughness.

• OSTI ID: 21124077
• Journal Information: Applied Physics Letters, Vol. 93, Issue 6; Other Information: DOI: 10.1063/1.2967882; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AQUEOUS SOLUTIONS
CESIUM CHLORIDES
EMISSION SPECTRA
EMISSION SPECTROSCOPY
IRRADIATION
LASERS
PULSES
REFLECTIVITY
ROUGHNESS
TIME DELAY
TIME RESOLUTION
X-RAY SPECTRA