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Title: Efficient mass-selective three-photon ionization of zirconium atoms

Abstract

In an AVLIS process, .sup.91 Zr is selectively removed from natural zirconium by a three-step photoionization wherein Zr atoms are irradiated by a laser beam having a wavelength .lambda..sub.1, selectively raising .sup.91 Zr atoms to an odd-parity E.sub.1 energy level in the range of 16000-19000 cm.sup.-1, are irradiated by a laser beam having a wavelength .lambda..sub.2 to raise the atoms from an E.sub.l level to an even-parity E.sub.2 energy level in the range of 35000-37000 cm.sup.-1 and are irradiated by a laser beam having a wavelength .lambda..sub.3 to cause a resonant transition of atoms from an E.sub.2 level to an autoionizing level above 53506 cm.sup.-1. .lambda..sub.3 wavelengths of 5607, 6511 or 5756 .ANG. will excite a zirconium atom from an E.sub.2 energy state of 36344 cm.sup.-1 to an autoionizing level; a .lambda..sub.3 wavelength of 5666 .ANG. will cause an autoionizing transition from an E.sub.2 level of 36068 cm.sup.-1 ; and a .lambda. .sub.3 wavelength of 5662 .ANG. will cause an ionizing resonance of an atom at an E.sub.2 level of 35904 cm.sup.-1.

Inventors:
 [1]
  1. San Ramon, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
869673
Patent Number(s):
5376246
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
efficient; mass-selective; three-photon; ionization; zirconium; atoms; avlis; process; 91; zr; selectively; removed; natural; three-step; photoionization; irradiated; laser; beam; wavelength; lambda; raising; odd-parity; energy; level; range; 16000-19000; cm; -1; raise; even-parity; 35000-37000; resonant; transition; autoionizing; 53506; wavelengths; 5607; 6511; 5756; ang; excite; atom; 36344; 5666; 36068; 5662; ionizing; resonance; 35904; energy level; laser beam; selectively removed; three-step photoionization; selectively remove; /204/

Citation Formats

Page, Ralph H. Efficient mass-selective three-photon ionization of zirconium atoms. United States: N. p., 1994. Web.
Page, Ralph H. Efficient mass-selective three-photon ionization of zirconium atoms. United States.
Page, Ralph H. Sat . "Efficient mass-selective three-photon ionization of zirconium atoms". United States. https://www.osti.gov/servlets/purl/869673.
@article{osti_869673,
title = {Efficient mass-selective three-photon ionization of zirconium atoms},
author = {Page, Ralph H},
abstractNote = {In an AVLIS process, .sup.91 Zr is selectively removed from natural zirconium by a three-step photoionization wherein Zr atoms are irradiated by a laser beam having a wavelength .lambda..sub.1, selectively raising .sup.91 Zr atoms to an odd-parity E.sub.1 energy level in the range of 16000-19000 cm.sup.-1, are irradiated by a laser beam having a wavelength .lambda..sub.2 to raise the atoms from an E.sub.l level to an even-parity E.sub.2 energy level in the range of 35000-37000 cm.sup.-1 and are irradiated by a laser beam having a wavelength .lambda..sub.3 to cause a resonant transition of atoms from an E.sub.2 level to an autoionizing level above 53506 cm.sup.-1. .lambda..sub.3 wavelengths of 5607, 6511 or 5756 .ANG. will excite a zirconium atom from an E.sub.2 energy state of 36344 cm.sup.-1 to an autoionizing level; a .lambda..sub.3 wavelength of 5666 .ANG. will cause an autoionizing transition from an E.sub.2 level of 36068 cm.sup.-1 ; and a .lambda. .sub.3 wavelength of 5662 .ANG. will cause an ionizing resonance of an atom at an E.sub.2 level of 35904 cm.sup.-1.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

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