Hyperfine structures and isotopic shifts of uranium transitions using tunable laser spectroscopy of laser ablation plumes

S. S. Harilal, C. M. Murzyn, M. C. Phillips, J. B. Martin

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

We report isotopic shifts and hyperfine structures of selected U transitions employing tunable spectroscopy viz: laser-induced fluorescence and laser absorption spectroscopy of laser ablation plumes. The plasmas were produced during ns laser ablation on a natural U metal target which contains 0.73% 235U. Our results show that isotopic shifts between 238U and 235U are entangled with hyperfine structures of 235U. Measurements obtained using laser-induced fluorescence are affected by the high absorbance of 238U. Time-resolved laser absorption spectroscopy is carried out for evaluating the optical absorption and estimating the hyperfine constants.

Original languageEnglish (US)
Article number105828
JournalSpectrochimica Acta - Part B Atomic Spectroscopy
Volume169
DOIs
StatePublished - Jul 2020

Keywords

  • Hyperfine structure
  • Isotopic analysis
  • LIBS
  • Laser ablation
  • Laser absorption spectroscopy
  • Laser-induced fluorescence
  • Tunable laser spectroscopy
  • Uranium

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Spectroscopy

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