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Author Bokhan, P. A. ♦ Zakrevskii, D. E. ♦ Kalugin, M. M. ♦ Fateev, N. V. ♦ Buchanov, V. V. ♦ Kazaryan, M. A. ♦ Prokhorov, A. M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ATOMIC AND MOLECULAR PHYSICS ♦ BORON ISOTOPES ♦ CHEMICAL REACTIONS ♦ COMPUTERIZED SIMULATION ♦ DOPPLER BROADENING ♦ EXCITATION ♦ LASER ISOTOPE SEPARATION ♦ LEAD 210 ♦ PHOTOIONIZATION ♦ PHOTON BEAMS ♦ PHOTONS ♦ SILICON ISOTOPES ♦ VAPORS ♦ VISIBLE RADIATION ♦ ZINC ISOTOPES ♦ ALPHA DECAY RADIOISOTOPES ♦ BEAMS ♦ BETA DECAY RADIOISOTOPES ♦ BETA-MINUS DECAY RADIOISOTOPES ♦ BOSONS ♦ ELECTROMAGNETIC RADIATION ♦ ELEMENTARY PARTICLES ♦ ENERGY-LEVEL TRANSITIONS ♦ EVEN-EVEN NUCLEI ♦ FLUIDS ♦ GASES ♦ HEAVY NUCLEI ♦ IONIZATION ♦ ISOTOPE SEPARATION ♦ ISOTOPES ♦ LEAD ISOTOPES ♦ LINE BROADENING ♦ MASSLESS PARTICLES ♦ NUCLEI ♦ RADIATIONS ♦ RADIOISOTOPES ♦ SEPARATION PROCESSES ♦ SIMULATION ♦ YEARS LIVING RADIOISOTOPES
Abstract New approaches to the methods of laser isotope separation are considered and realised which substantially extend the possibilities of the methods. To narrow down an absorption line and decrease parasitic absorption at transitions in isotope atoms that do not belong to an isotope being separated, two-photon excitation of atoms was used both in collinear and counterpropagating light beams. By using two-photon excitation in counterpropagating light beams, the weight amounts of Zn isotopes were separated under the conditions when the isotopic structure of a resonance transition was completely masked by the Doppler broadening. Two-photon excitation in collinear beams was used for efficient purification of lead from a rare {sup 210}Pb isotope to obtain a low-radioactive lead. A detailed computer simulation of separation of isotopes of Zn, B, Pb, and Si using two-photon excitation was performed. An efficient method of isotope separation involving chemical reactions with selectively excited long-lived atoms was proposed and realised. The method offers some advantages over the conventional photoionisation method. (invited paper)
ISSN 10637818
Educational Use Research
Learning Resource Type Article
Publisher Date 2002-07-31
Publisher Place United States
Journal Quantum Electronics
Volume Number 32
Issue Number 7


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