Microwave observation of 41K79Br and 41K81Br from laser-ablated potassium bromide

Brooke A. Timp; Jamie L. Doran; Shyam Iyer; Jens Uwe Grabow; Kenneth R. Leopold

doi:10.1016/j.jms.2011.11.002

Microwave observation of ⁴¹K⁷⁹Br and ⁴¹K⁸¹Br from laser-ablated potassium bromide

Brooke A. Timp, Jamie L. Doran, Shyam Iyer, Jens Uwe Grabow, Kenneth R. Leopold

Chemistry (Twin Cities)

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

6 Scopus citations

Abstract

The J = 2 ← 1 transitions of the previously unobserved isotopologues ⁴¹K⁷⁹Br and ⁴¹K⁸¹Br have been recorded with a pulsed-nozzle Fourier transform microwave spectrometer, newly combined with a 532 nm laser ablation source. Aspects of the experimental design are described. Rotational and nuclear quadrupole coupling constants are obtained and combined with published results for ³⁹K⁷⁹Br and ³⁹K⁸¹Br to produce a set of isotopically invariant parameters. New rotational transitions of ²³Na^35,37Cl, ³⁹K⁷⁹Br, and ³⁹K¹²⁷I have also been recorded. Excited vibrational states are not observed, indicating efficient cooling of the metal halides following the initial ablation event.

Original language	English (US)
Pages (from-to)	20-24
Number of pages	5
Journal	Journal of molecular spectroscopy
Volume	271
Issue number	1
DOIs	https://doi.org/10.1016/j.jms.2011.11.002
State	Published - Jan 2012

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation , Grant # CHE 0845290 . We are grateful to Professor Xiaoyang Zhu for initial loan of a frequency doubled Nd:YAG laser, to Professor Michael Morse for his generous advice on laser ablation, and to Carl Johnson and Chris Cook of the Physics and Astronomy Machine Shop at the University of Minnesota for invaluable help in designing and constructing the apparatus.

Keywords

Alkali halide
Laser ablation
Mass invariant Dunham parameters
Microwave spectrum
Potassium bromide

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title = "Microwave observation of 41K79Br and 41K81Br from laser-ablated potassium bromide",

abstract = "The J = 2 ← 1 transitions of the previously unobserved isotopologues 41K79Br and 41K81Br have been recorded with a pulsed-nozzle Fourier transform microwave spectrometer, newly combined with a 532 nm laser ablation source. Aspects of the experimental design are described. Rotational and nuclear quadrupole coupling constants are obtained and combined with published results for 39K79Br and 39K81Br to produce a set of isotopically invariant parameters. New rotational transitions of 23Na35,37Cl, 39K79Br, and 39K127I have also been recorded. Excited vibrational states are not observed, indicating efficient cooling of the metal halides following the initial ablation event.",

keywords = "Alkali halide, Laser ablation, Mass invariant Dunham parameters, Microwave spectrum, Potassium bromide",

author = "Timp, {Brooke A.} and Doran, {Jamie L.} and Shyam Iyer and Grabow, {Jens Uwe} and Leopold, {Kenneth R.}",

note = "Funding Information: This work was supported by the National Science Foundation , Grant # CHE 0845290 . We are grateful to Professor Xiaoyang Zhu for initial loan of a frequency doubled Nd:YAG laser, to Professor Michael Morse for his generous advice on laser ablation, and to Carl Johnson and Chris Cook of the Physics and Astronomy Machine Shop at the University of Minnesota for invaluable help in designing and constructing the apparatus. ",

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AU - Timp, Brooke A.

AU - Doran, Jamie L.

AU - Iyer, Shyam

AU - Grabow, Jens Uwe

AU - Leopold, Kenneth R.

N1 - Funding Information: This work was supported by the National Science Foundation , Grant # CHE 0845290 . We are grateful to Professor Xiaoyang Zhu for initial loan of a frequency doubled Nd:YAG laser, to Professor Michael Morse for his generous advice on laser ablation, and to Carl Johnson and Chris Cook of the Physics and Astronomy Machine Shop at the University of Minnesota for invaluable help in designing and constructing the apparatus.

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AB - The J = 2 ← 1 transitions of the previously unobserved isotopologues 41K79Br and 41K81Br have been recorded with a pulsed-nozzle Fourier transform microwave spectrometer, newly combined with a 532 nm laser ablation source. Aspects of the experimental design are described. Rotational and nuclear quadrupole coupling constants are obtained and combined with published results for 39K79Br and 39K81Br to produce a set of isotopically invariant parameters. New rotational transitions of 23Na35,37Cl, 39K79Br, and 39K127I have also been recorded. Excited vibrational states are not observed, indicating efficient cooling of the metal halides following the initial ablation event.

KW - Alkali halide

KW - Laser ablation

KW - Mass invariant Dunham parameters

KW - Microwave spectrum

KW - Potassium bromide

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