Spectral and temporal behavior of an alkali metal plasma extreme ultraviolet source for surface morphology applications

Journal Article · Mon Feb 28 00:00:00 EST 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3560304· OSTI ID:21518298

Higashiguchi, Takeshi; Yugami, Noboru ^[1]; Yamaguchi, Mami; Otsuka, Takamitsu; Terauchi, Hiromitsu; Yatagai, Toyohiko ^[1]; D'Arcy, Rebekah; Dunne, Padraig; O'Sullivan, Gerry ^[2]

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1. Department of Advanced Interdisciplinary Sciences and Center for Optical Research and Education (CORE), Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan)
2. School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland)

We have characterized the emission spectrum and temporal history of a pure potassium plasma. Strong broadband emission was observed around 40 nm due to 3s-3p, 3p-3d, and 3d-4f transitions in ions ranging from K{sup 2+} to K{sup 4+} at a time-averaged electron temperature of about 12 eV. The temporal behavior of this emission strongly follows the recombination phase in the laser-produced plasma and it was reproduced by a hydrodynamic simulation of the potassium plasma which accounted for atomic processes.

• OSTI ID: 21518298
• Journal Information: Applied Physics Letters, Vol. 98, Issue 9; Other Information: DOI: 10.1063/1.3560304; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALI METALS
CATIONS
ELECTRON TEMPERATURE
EMISSION
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
EV RANGE
EXTREME ULTRAVIOLET RADIATION
INDIUM IONS
ION TEMPERATURE
LASER-PRODUCED PLASMA
LIGHT TRANSMISSION
MORPHOLOGY
PLASMA SIMULATION
POTASSIUM IONS
RECOMBINATION
SURFACES
CHARGED PARTICLES
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY RANGE
IONS
METALS
PLASMA
RADIATIONS
SIMULATION
SPECTRA
TRANSMISSION
ULTRAVIOLET RADIATION