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Resonant excitation of uranium atoms by an argon ion laser

Journal Article:

Abstract

Photoionization of uranium atoms by UV lines, 3511 A and 3345 A, of an argon ion laser was observed and attributed due to resonant two-photon ionization. The dependence of the photoion currents on laser power was measured in focusing and non-focusing modes of laser beam, which has enabled us to obtain an absorption cross section and an ionization cross section independently. The orders of magnitude of these cross sections averaged over the fine structure were determined to be 10/sup -14/ cm/sup 2/ and 10/sup -17/ cm/sup 2/ respectively from a rate equation model. Resonance between 3511-A laser line and the absorption line of uranium isotopes was also confirmed by the ionization spectra obtained by near-single-frequency operation of the ion laser, which allowed the isotopic selective excitation of the uranium atoms. The maximum value of the enrichment of /sup 235/U was about 14%. The isotope separation of uranium atoms by this resonant excitation has been discussed.
Authors:
Maeyama, H; Morikawa, M; Aihara, Y; Mochizuki, T; Yamanaka, C [1] 
  1. Osaka Univ. (Japan)
Publication Date:
Mar 01, 1979
Product Type:
Journal Article
Reference Number:
AIX-11-524717; EDB-80-105286
Resource Relation:
Journal Name: Technol. Rep. Osaka Univ.; (Japan); Journal Volume: 29:1459-1491
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; URANIUM; PHOTOIONIZATION; URANIUM 235; LASER ISOTOPE SEPARATION; ARGON IONS; CROSS SECTIONS; ENERGY LEVELS; EXCITATION; GAS LASERS; RESONANCE; ULTRAVIOLET RADIATION; ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ACTINIDES; ALPHA DECAY RADIOISOTOPES; CHARGED PARTICLES; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY-LEVEL TRANSITIONS; EVEN-ODD NUCLEI; HEAVY NUCLEI; IONIZATION; IONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPE SEPARATION; ISOTOPES; LASERS; METALS; MINUTES LIVING RADIOISOTOPES; NUCLEI; RADIATIONS; RADIOISOTOPES; SEPARATION PROCESSES; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES; 050503* - Nuclear Fuels- Uranium Enrichment- Laser Excitation- (-1989); 400500 - Photochemistry
OSTI ID:
5212125
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: TROUA
Submitting Site:
INIS
Size:
Pages: 177-188
Announcement Date:

Journal Article:

Citation Formats

Maeyama, H, Morikawa, M, Aihara, Y, Mochizuki, T, and Yamanaka, C. Resonant excitation of uranium atoms by an argon ion laser. Japan: N. p., 1979. Web.
Maeyama, H, Morikawa, M, Aihara, Y, Mochizuki, T, & Yamanaka, C. Resonant excitation of uranium atoms by an argon ion laser. Japan.
Maeyama, H, Morikawa, M, Aihara, Y, Mochizuki, T, and Yamanaka, C. 1979. "Resonant excitation of uranium atoms by an argon ion laser." Japan.
@misc{etde_5212125,
title = {Resonant excitation of uranium atoms by an argon ion laser}
author = {Maeyama, H, Morikawa, M, Aihara, Y, Mochizuki, T, and Yamanaka, C}
abstractNote = {Photoionization of uranium atoms by UV lines, 3511 A and 3345 A, of an argon ion laser was observed and attributed due to resonant two-photon ionization. The dependence of the photoion currents on laser power was measured in focusing and non-focusing modes of laser beam, which has enabled us to obtain an absorption cross section and an ionization cross section independently. The orders of magnitude of these cross sections averaged over the fine structure were determined to be 10/sup -14/ cm/sup 2/ and 10/sup -17/ cm/sup 2/ respectively from a rate equation model. Resonance between 3511-A laser line and the absorption line of uranium isotopes was also confirmed by the ionization spectra obtained by near-single-frequency operation of the ion laser, which allowed the isotopic selective excitation of the uranium atoms. The maximum value of the enrichment of /sup 235/U was about 14%. The isotope separation of uranium atoms by this resonant excitation has been discussed.}
journal = {Technol. Rep. Osaka Univ.; (Japan)}
volume = {29:1459-1491}
journal type = {AC}
place = {Japan}
year = {1979}
month = {Mar}
}