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

doi:10.1016/j.sab.2020.105828

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

Optical Sciences

Research output: Contribution to journal › Article › peer-review

30 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 language	English (US)
Article number	105828
Journal	Spectrochimica Acta - Part B Atomic Spectroscopy
Volume	169
DOIs	https://doi.org/10.1016/j.sab.2020.105828
State	Published - 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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10.1016/j.sab.2020.105828

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title = "Hyperfine structures and isotopic shifts of uranium transitions using tunable laser spectroscopy of laser ablation plumes",

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.",

keywords = "Hyperfine structure, Isotopic analysis, LIBS, Laser ablation, Laser absorption spectroscopy, Laser-induced fluorescence, Tunable laser spectroscopy, Uranium",

author = "Harilal, {S. S.} and Murzyn, {C. M.} and Phillips, {M. C.} and Martin, {J. B.}",

note = "Funding Information: Office of Defense Nuclear Nonproliferation (DNN); National Nuclear Security Administration (NNSA); U.S. Department of Energy (DOE) (DE-AC05-76RL01830), and Sandia National Labs' Lab Directed Research and Development Office (SAND2020-3141 J). This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the U.S. Department of Energy or the United States Government. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = jul,

doi = "10.1016/j.sab.2020.105828",

language = "English (US)",

volume = "169",

journal = "Spectrochimica Acta - Part B Atomic Spectroscopy",

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AU - Harilal, S. S.

AU - Murzyn, C. M.

AU - Phillips, M. C.

AU - Martin, J. B.

N1 - Funding Information: Office of Defense Nuclear Nonproliferation (DNN); National Nuclear Security Administration (NNSA); U.S. Department of Energy (DOE) (DE-AC05-76RL01830), and Sandia National Labs' Lab Directed Research and Development Office (SAND2020-3141 J). This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the U.S. Department of Energy or the United States Government. Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/7

Y1 - 2020/7

N2 - 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.

AB - 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.

KW - Hyperfine structure

KW - Isotopic analysis

KW - LIBS

KW - Laser ablation

KW - Laser absorption spectroscopy

KW - Laser-induced fluorescence

KW - Tunable laser spectroscopy

KW - Uranium

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

Abstract

Keywords

ASJC Scopus subject areas

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