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Title: Photoionization-pumped, Ne II, x-ray laser studies project. Final report

Abstract

The energetics of this pumping scheme are shown. Short-pulse (50 to 100 ps) laser irradiation of an appropriate x-ray flashlamp medium generates broad-band emission in the range of 300 to 800 eV which preferentially photoionizes Ne to the /sup 2/S state of Ne II creating an inversion at approximately 27 eV. Although this approach does not depend on precise spectral overlap between the x-ray pump radiation and the medium to be pumped, it does require that the x-ray medium remain un-ionized prior to photoionization by the soft x-ray emission. Well-controlled focus conditions are required to ensure that the x-ray medium is not subjected to electron or x-ray preheat prior to irradiation by the soft x-ray source. The magnitude of the population inversion is predicted to be critically dependent upon rapid photoionization of the two states; therefore, ultra-short pulse irradiation of the laser flashlamps is required.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Rochester Univ., NY (USA). Lab. for Laser Energetics; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
5785902
Report Number(s):
UCRL-15668
ON: DE85012973
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; X-RAY LASERS; EXCITATION; FLASH TUBES; IONIZATION; NEON; PHOTOIONIZATION; ELECTRON TUBES; ELEMENTS; ENERGY-LEVEL TRANSITIONS; FLUIDS; GAS DISCHARGE TUBES; GASES; LASERS; NONMETALS; RARE GASES; 420300* - Engineering- Lasers- (-1989); 700208 - Fusion Power Plant Technology- Inertial Confinement Technology

Citation Formats

Richardson, M C, Hagelstein, P L, Eckart, M J, Forsyth, J M, Gerrassimenko, M, and Soures, J M. Photoionization-pumped, Ne II, x-ray laser studies project. Final report. United States: N. p., 1984. Web. doi:10.2172/5785902.
Richardson, M C, Hagelstein, P L, Eckart, M J, Forsyth, J M, Gerrassimenko, M, & Soures, J M. Photoionization-pumped, Ne II, x-ray laser studies project. Final report. United States. https://doi.org/10.2172/5785902
Richardson, M C, Hagelstein, P L, Eckart, M J, Forsyth, J M, Gerrassimenko, M, and Soures, J M. 1984. "Photoionization-pumped, Ne II, x-ray laser studies project. Final report". United States. https://doi.org/10.2172/5785902. https://www.osti.gov/servlets/purl/5785902.
@article{osti_5785902,
title = {Photoionization-pumped, Ne II, x-ray laser studies project. Final report},
author = {Richardson, M C and Hagelstein, P L and Eckart, M J and Forsyth, J M and Gerrassimenko, M and Soures, J M},
abstractNote = {The energetics of this pumping scheme are shown. Short-pulse (50 to 100 ps) laser irradiation of an appropriate x-ray flashlamp medium generates broad-band emission in the range of 300 to 800 eV which preferentially photoionizes Ne to the /sup 2/S state of Ne II creating an inversion at approximately 27 eV. Although this approach does not depend on precise spectral overlap between the x-ray pump radiation and the medium to be pumped, it does require that the x-ray medium remain un-ionized prior to photoionization by the soft x-ray emission. Well-controlled focus conditions are required to ensure that the x-ray medium is not subjected to electron or x-ray preheat prior to irradiation by the soft x-ray source. The magnitude of the population inversion is predicted to be critically dependent upon rapid photoionization of the two states; therefore, ultra-short pulse irradiation of the laser flashlamps is required.},
doi = {10.2172/5785902},
url = {https://www.osti.gov/biblio/5785902}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}