skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Spatial distribution of soft x-ray line emissions from aluminum plasma excited by a pair of femtosecond-laser pulses

Abstract

We measured the time-integrated, spatially resolved spectra of soft x rays emitted from laser-induced aluminum plasma to characterize its spatial features. The plasma was excited by an intense femtosecond-laser pulse with a controlled artificial prepulse at intensities of 9.9x10{sup 15} and 6.4x10{sup 14} W/cm{sup 2}, respectively. The dependence of the spectra on the time intervals between the main pulse and the prepulse was obtained for delay times of 0-3 ns. The strongest emissions in soft x-ray range occurred in a narrow region less than 50 {mu}m from the target surface. In contrast to the continuum spectrum, the prepulse technique causes the Al{sup 3+}2p{sup 6}-2p{sup 5}3s emission to extend more than 600 {mu}m from the target surface. We showed that the line emission can be separated spatially from the other continuum component of the emission spectra and that the extension length increased with increases in the pulse-separation time.

Authors:
; ; ;  [1]
  1. NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198 (Japan)
Publication Date:
OSTI Identifier:
20787969
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 99; Journal Issue: 6; Other Information: DOI: 10.1063/1.2180433; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALUMINIUM; ALUMINIUM IONS; EMISSION SPECTRA; LASERS; LIGHT TRANSMISSION; PHOTON EMISSION; PLASMA; PLASMA DIAGNOSTICS; PLASMA PRODUCTION; PULSES; SOFT X RADIATION; SPATIAL DISTRIBUTION; X-RAY SOURCES

Citation Formats

Okano, Yasuaki, Oguri, Katsuya, Nishikawa, Tadashi, and Nakano, Hidetoshi. Spatial distribution of soft x-ray line emissions from aluminum plasma excited by a pair of femtosecond-laser pulses. United States: N. p., 2006. Web. doi:10.1063/1.2180433.
Okano, Yasuaki, Oguri, Katsuya, Nishikawa, Tadashi, & Nakano, Hidetoshi. Spatial distribution of soft x-ray line emissions from aluminum plasma excited by a pair of femtosecond-laser pulses. United States. doi:10.1063/1.2180433.
Okano, Yasuaki, Oguri, Katsuya, Nishikawa, Tadashi, and Nakano, Hidetoshi. Wed . "Spatial distribution of soft x-ray line emissions from aluminum plasma excited by a pair of femtosecond-laser pulses". United States. doi:10.1063/1.2180433.
@article{osti_20787969,
title = {Spatial distribution of soft x-ray line emissions from aluminum plasma excited by a pair of femtosecond-laser pulses},
author = {Okano, Yasuaki and Oguri, Katsuya and Nishikawa, Tadashi and Nakano, Hidetoshi},
abstractNote = {We measured the time-integrated, spatially resolved spectra of soft x rays emitted from laser-induced aluminum plasma to characterize its spatial features. The plasma was excited by an intense femtosecond-laser pulse with a controlled artificial prepulse at intensities of 9.9x10{sup 15} and 6.4x10{sup 14} W/cm{sup 2}, respectively. The dependence of the spectra on the time intervals between the main pulse and the prepulse was obtained for delay times of 0-3 ns. The strongest emissions in soft x-ray range occurred in a narrow region less than 50 {mu}m from the target surface. In contrast to the continuum spectrum, the prepulse technique causes the Al{sup 3+}2p{sup 6}-2p{sup 5}3s emission to extend more than 600 {mu}m from the target surface. We showed that the line emission can be separated spatially from the other continuum component of the emission spectra and that the extension length increased with increases in the pulse-separation time.},
doi = {10.1063/1.2180433},
journal = {Journal of Applied Physics},
number = 6,
volume = 99,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}