Observation of femtosecond-laser-induced ablation plumes of aluminum using space- and time-resolved soft x-ray absorption spectroscopy

Journal Article · Mon Nov 27 00:00:00 EST 2006 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2398931· OSTI ID:20880105

Okano, Yasuaki; Oguri, Katsuya; Nishikawa, Tadashi; Nakano, Hidetoshi ^[1]

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1. NTT Basic Research Laboratories, Nippon Telegraph and Telephone Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198 (Japan)

The dynamics of the laser ablation plume expansion of aluminum was investigated by using space- and time-resolved soft x-ray absorption spectroscopy. Blueshifts of the Al L-shell photoabsorption edge indicating the state of aluminum were observed in the plumes, which were generated by irradiating an aluminum target with 120 fs near-infrared pulses at an intensity of 10{sup 14} W/cm{sup 2}. The spatiotemporal evolution of the plumes exhibited a multilayer structure consisting of vaporized aluminum and condensed aluminum particles, following the expansion of plasma, with expansion velocities of 10{sup 4} m/s for the atomic state and 10{sup 3} m/s for the condensed state.

• OSTI ID: 20880105
• Journal Information: Applied Physics Letters, Vol. 89, Issue 22; Other Information: DOI: 10.1063/1.2398931; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABLATION
ABSORPTION SPECTROSCOPY
ALUMINIUM
L SHELL
LASERS
PARTICLES
PLASMA
PLASMA DIAGNOSTICS
PLASMA PRODUCTION
PULSES
SOFT X RADIATION
SPATIAL RESOLUTION
TIME RESOLUTION
X-RAY SPECTRA
X-RAY SPECTROSCOPY