According theory and experiment in CaH: Laser-induced fluorescence study of new B/B′-X bands in the UV region

Kyohei Watanabe; Naoya Yoneyama; Kanako Uchida; Kaori Kobayashi; Fusakazu Matsushima; Yoshiki Moriwaki; Stephen C. Ross

doi:10.1016/j.cplett.2016.05.033

According theory and experiment in CaH: Laser-induced fluorescence study of new B/B′-X bands in the UV region

Kyohei Watanabe, Naoya Yoneyama, Kanako Uchida, Kaori Kobayashi^*, Fusakazu Matsushima, Yoshiki Moriwaki, Stephen C. Ross

^*Corresponding author for this work

Department of Physics

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

7 Scopus citations

Abstract

Despite the astrophysical importance of calcium monohydride (CaH), a long-standing discrepancy exists between the experimental and theoretical analysis of its first two excited ²Σ⁺ states. In a bid to resolve this discrepancy, we observed the rotationally-resolved laser-induced fluorescence spectrum of CaH in the 23,300-27,800 cm^-1 region. We assigned all newly observed vibrational levels, and five levels previously assigned to the D state, to the B/B′ state. The level properties alternate strongly with vibrational excitation and this new assignment brings the experimental vibronic structure into remarkably good agreement with the predictions of Carlsund-Levin et al. (2002).

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Chemical Physics Letters
Volume	657
DOIs	https://doi.org/10.1016/j.cplett.2016.05.033
State	Published - 2016/07/16

Keywords

Calcium monohydride
Double-minimum potential
Electronic transition
Laser-induced fluorescence

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

Access to Document

10.1016/j.cplett.2016.05.033

Cite this

@article{4631e54974c64a3ab953a1895fe9018a,

title = "According theory and experiment in CaH: Laser-induced fluorescence study of new B/B′-X bands in the UV region",

abstract = "Despite the astrophysical importance of calcium monohydride (CaH), a long-standing discrepancy exists between the experimental and theoretical analysis of its first two excited 2Σ+ states. In a bid to resolve this discrepancy, we observed the rotationally-resolved laser-induced fluorescence spectrum of CaH in the 23,300-27,800 cm-1 region. We assigned all newly observed vibrational levels, and five levels previously assigned to the D state, to the B/B′ state. The level properties alternate strongly with vibrational excitation and this new assignment brings the experimental vibronic structure into remarkably good agreement with the predictions of Carlsund-Levin et al. (2002).",

keywords = "Calcium monohydride, Double-minimum potential, Electronic transition, Laser-induced fluorescence",

author = "Kyohei Watanabe and Naoya Yoneyama and Kanako Uchida and Kaori Kobayashi and Fusakazu Matsushima and Yoshiki Moriwaki and Ross, {Stephen C.}",

year = "2016",

month = jul,

day = "16",

doi = "10.1016/j.cplett.2016.05.033",

language = "英語",

volume = "657",

pages = "1--7",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - According theory and experiment in CaH

T2 - Laser-induced fluorescence study of new B/B′-X bands in the UV region

AU - Watanabe, Kyohei

AU - Yoneyama, Naoya

AU - Uchida, Kanako

AU - Kobayashi, Kaori

AU - Matsushima, Fusakazu

AU - Moriwaki, Yoshiki

AU - Ross, Stephen C.

PY - 2016/7/16

Y1 - 2016/7/16

N2 - Despite the astrophysical importance of calcium monohydride (CaH), a long-standing discrepancy exists between the experimental and theoretical analysis of its first two excited 2Σ+ states. In a bid to resolve this discrepancy, we observed the rotationally-resolved laser-induced fluorescence spectrum of CaH in the 23,300-27,800 cm-1 region. We assigned all newly observed vibrational levels, and five levels previously assigned to the D state, to the B/B′ state. The level properties alternate strongly with vibrational excitation and this new assignment brings the experimental vibronic structure into remarkably good agreement with the predictions of Carlsund-Levin et al. (2002).

AB - Despite the astrophysical importance of calcium monohydride (CaH), a long-standing discrepancy exists between the experimental and theoretical analysis of its first two excited 2Σ+ states. In a bid to resolve this discrepancy, we observed the rotationally-resolved laser-induced fluorescence spectrum of CaH in the 23,300-27,800 cm-1 region. We assigned all newly observed vibrational levels, and five levels previously assigned to the D state, to the B/B′ state. The level properties alternate strongly with vibrational excitation and this new assignment brings the experimental vibronic structure into remarkably good agreement with the predictions of Carlsund-Levin et al. (2002).

KW - Calcium monohydride

KW - Double-minimum potential

KW - Electronic transition

KW - Laser-induced fluorescence

UR - http://www.scopus.com/inward/record.url?scp=84971343333&partnerID=8YFLogxK

U2 - 10.1016/j.cplett.2016.05.033

DO - 10.1016/j.cplett.2016.05.033

M3 - 学術論文

AN - SCOPUS:84971343333

SN - 0009-2614

VL - 657

SP - 1

EP - 7

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -

According theory and experiment in CaH: Laser-induced fluorescence study of new B/B′-X bands in the UV region

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this