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Title: Enhancement of extreme ultraviolet emission from a lithium plasma by use of dual laser pulses

Abstract

We demonstrated enhancement of extreme ultraviolet (EUV) emission at 13.5 nm from a lithium plasma by use of dual laser pulses. A single laser pulse produced a lithium plasma condition for the EUV emission far beyond its optimum. Utilization of dual laser pulses, however, enhanced the EUV emission energy, and its maximum in-band EUV conversion efficiency (CE) in a measured solid angle was observed to be 2.4% at a pulse separation time between 20 and 50 ns. The EUV CE became 1.8 times as large as that produced by a single laser pulse, which was one of the highest values ever reported. Enhancement of the EUV CE was attributed to the decrease of the plasma temperature and density to their optimum values.

Authors:
; ; ;  [1]
  1. Department of Electrical and Electronic Engineering, University of Miyazaki, Gakuen Kibanadai Nishi 1-1, Miyazaki 889-2192, Japan and Photon Science Center, University of Miyazaki, Gakuen Kibanadai Nishi 1-1, Miyazaki 889-2192 (Japan)
Publication Date:
OSTI Identifier:
20779123
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 88; Journal Issue: 16; Other Information: DOI: 10.1063/1.2195904; (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; ELECTRON TEMPERATURE; EXTREME ULTRAVIOLET RADIATION; ION TEMPERATURE; LASER RADIATION; LASER-PRODUCED PLASMA; LITHIUM; PHOTON EMISSION; PLASMA DENSITY; PLASMA DIAGNOSTICS; PLASMA PRODUCTION; PULSES

Citation Formats

Higashiguchi, Takeshi, Kawasaki, Keita, Sasaki, Wataru, and Kubodera, Shoichi. Enhancement of extreme ultraviolet emission from a lithium plasma by use of dual laser pulses. United States: N. p., 2006. Web. doi:10.1063/1.2195904.
Higashiguchi, Takeshi, Kawasaki, Keita, Sasaki, Wataru, & Kubodera, Shoichi. Enhancement of extreme ultraviolet emission from a lithium plasma by use of dual laser pulses. United States. doi:10.1063/1.2195904.
Higashiguchi, Takeshi, Kawasaki, Keita, Sasaki, Wataru, and Kubodera, Shoichi. Mon . "Enhancement of extreme ultraviolet emission from a lithium plasma by use of dual laser pulses". United States. doi:10.1063/1.2195904.
@article{osti_20779123,
title = {Enhancement of extreme ultraviolet emission from a lithium plasma by use of dual laser pulses},
author = {Higashiguchi, Takeshi and Kawasaki, Keita and Sasaki, Wataru and Kubodera, Shoichi},
abstractNote = {We demonstrated enhancement of extreme ultraviolet (EUV) emission at 13.5 nm from a lithium plasma by use of dual laser pulses. A single laser pulse produced a lithium plasma condition for the EUV emission far beyond its optimum. Utilization of dual laser pulses, however, enhanced the EUV emission energy, and its maximum in-band EUV conversion efficiency (CE) in a measured solid angle was observed to be 2.4% at a pulse separation time between 20 and 50 ns. The EUV CE became 1.8 times as large as that produced by a single laser pulse, which was one of the highest values ever reported. Enhancement of the EUV CE was attributed to the decrease of the plasma temperature and density to their optimum values.},
doi = {10.1063/1.2195904},
journal = {Applied Physics Letters},
number = 16,
volume = 88,
place = {United States},
year = {Mon Apr 17 00:00:00 EDT 2006},
month = {Mon Apr 17 00:00:00 EDT 2006}
}