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.
N1 - Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.
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 -