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Title: Spectroscopically pure metal vapor source for highly charged ion spectroscopy and capillary discharge soft x-ray lasers

Abstract

We describe a compact, pulsed metal vapor source used for the production of dense plasma columns of interest for both soft x-ray laser research and spectroscopy of highly ionized plasmas. The source generates spectroscopically pure cadmium vapor jets in a room-temperature environment by rapidly heating an electrode with a capacitive discharge. In the configuration described herein, the metal vapor jet produced by the source is axially injected into a fast (up to 15 kA/ns), high current (up to 200 kA peak) capillary discharge to generate highly ionized cadmium plasma columns. Spectroscopic analysis of the discharge emission in the 12-25 nm spectral range evidences the dominance of Cu-like (CdXX) and Ni-like (CdXXI) lines and shows strong line emission at 13.2 nm from the 4d {sup 1}S{sub 0}-4p {sup 1}P{sub 1} laser transition of Ni-like Cd. Hydrodynamic/atomic physics simulations performed to describe the dynamics of the plasma column and compute the optimum discharge conditions for laser amplification are discussed.

Authors:
; ;  [1]
  1. NSF Center for Extreme Ultraviolet Science and Technology and Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, USA and Advanced Energy Industries, Fort Collins, Colorado 80525 (United States)
Publication Date:
OSTI Identifier:
21024734
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 79; Journal Issue: 1; Other Information: DOI: 10.1063/1.2825459; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AMPLIFICATION; ATOMIC PHYSICS; CADMIUM; EMISSION; ION SPECTROSCOPY; LASERS; PLASMA; PLASMA HEATING; PLASMA JETS; PLASMA PRODUCTION; PLASMA SIMULATION; SOFT X RADIATION; TEMPERATURE RANGE 0273-0400 K; VAPORS; X-RAY SOURCES

Citation Formats

Tomasel, F G, Shlyaptsev, V N, Rocca, J J, Department of Applied Science, University of California Davis Livermore, Livermore, California 94551, and NSF Center for Extreme Ultraviolet Science and Technology and Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, USA and Department of Physics, Colorado State University, Fort Collins, Colorado 80523. Spectroscopically pure metal vapor source for highly charged ion spectroscopy and capillary discharge soft x-ray lasers. United States: N. p., 2008. Web. doi:10.1063/1.2825459.
Tomasel, F G, Shlyaptsev, V N, Rocca, J J, Department of Applied Science, University of California Davis Livermore, Livermore, California 94551, & NSF Center for Extreme Ultraviolet Science and Technology and Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, USA and Department of Physics, Colorado State University, Fort Collins, Colorado 80523. Spectroscopically pure metal vapor source for highly charged ion spectroscopy and capillary discharge soft x-ray lasers. United States. https://doi.org/10.1063/1.2825459
Tomasel, F G, Shlyaptsev, V N, Rocca, J J, Department of Applied Science, University of California Davis Livermore, Livermore, California 94551, and NSF Center for Extreme Ultraviolet Science and Technology and Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, USA and Department of Physics, Colorado State University, Fort Collins, Colorado 80523. Tue . "Spectroscopically pure metal vapor source for highly charged ion spectroscopy and capillary discharge soft x-ray lasers". United States. https://doi.org/10.1063/1.2825459.
@article{osti_21024734,
title = {Spectroscopically pure metal vapor source for highly charged ion spectroscopy and capillary discharge soft x-ray lasers},
author = {Tomasel, F G and Shlyaptsev, V N and Rocca, J J and Department of Applied Science, University of California Davis Livermore, Livermore, California 94551 and NSF Center for Extreme Ultraviolet Science and Technology and Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, USA and Department of Physics, Colorado State University, Fort Collins, Colorado 80523},
abstractNote = {We describe a compact, pulsed metal vapor source used for the production of dense plasma columns of interest for both soft x-ray laser research and spectroscopy of highly ionized plasmas. The source generates spectroscopically pure cadmium vapor jets in a room-temperature environment by rapidly heating an electrode with a capacitive discharge. In the configuration described herein, the metal vapor jet produced by the source is axially injected into a fast (up to 15 kA/ns), high current (up to 200 kA peak) capillary discharge to generate highly ionized cadmium plasma columns. Spectroscopic analysis of the discharge emission in the 12-25 nm spectral range evidences the dominance of Cu-like (CdXX) and Ni-like (CdXXI) lines and shows strong line emission at 13.2 nm from the 4d {sup 1}S{sub 0}-4p {sup 1}P{sub 1} laser transition of Ni-like Cd. Hydrodynamic/atomic physics simulations performed to describe the dynamics of the plasma column and compute the optimum discharge conditions for laser amplification are discussed.},
doi = {10.1063/1.2825459},
url = {https://www.osti.gov/biblio/21024734}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 1,
volume = 79,
place = {United States},
year = {2008},
month = {1}
}