TY - JOUR
T1 - Einstein A coefficients and absolute line intensities for the E2Π–X2Σ+ transition of CaH
AU - Li, G.
AU - Harrison, J.J.
AU - Ram, R.S.
AU - Bernath, P.F.
AU - Western, C.M.
PY - 2012/1/1
Y1 - 2012/1/1
N2 - Einstein A coefficients and absolute line intensities have been calculated for the E2Π–X2Σ+ transition of CaH. Using wavefunctions derived from the Rydberg–Klein–Rees (RKR) method and electronic transition dipole moment functions obtained from high-level ab initio calculations, rotationless transition dipole moment matrix elements have been calculated for all 10 bands involving v′=0,1 of the E2Π state and v″=0,1,2,3,4 of the X2Σ state. The rotational line strength factors (Hönl–London factors) are derived for the intermediate coupling case between Hund's case (a) and (b) for the E2Π–X2Σ+ transition. The computed transition dipole moments and the spectroscopic constants from a recent study [Ram et al., Journal of Molecular Spectroscopy 2011;266:86–91] have been combined to generate line lists containing Einstein A coefficients and absolute line intensities for 10 bands of the E2Π–X2Σ+ transition of CaH for J-values up to 50.5. The absolute line intensities have been used to determine a rotational temperature of 778±3 °C for the CaH sample in the recent study.
AB - Einstein A coefficients and absolute line intensities have been calculated for the E2Π–X2Σ+ transition of CaH. Using wavefunctions derived from the Rydberg–Klein–Rees (RKR) method and electronic transition dipole moment functions obtained from high-level ab initio calculations, rotationless transition dipole moment matrix elements have been calculated for all 10 bands involving v′=0,1 of the E2Π state and v″=0,1,2,3,4 of the X2Σ state. The rotational line strength factors (Hönl–London factors) are derived for the intermediate coupling case between Hund's case (a) and (b) for the E2Π–X2Σ+ transition. The computed transition dipole moments and the spectroscopic constants from a recent study [Ram et al., Journal of Molecular Spectroscopy 2011;266:86–91] have been combined to generate line lists containing Einstein A coefficients and absolute line intensities for 10 bands of the E2Π–X2Σ+ transition of CaH for J-values up to 50.5. The absolute line intensities have been used to determine a rotational temperature of 778±3 °C for the CaH sample in the recent study.
UR - http://www.scopus.com/inward/record.url?scp=80955151921&partnerID=8YFLogxK
U2 - 10.1016/j.jqsrt.2011.09.010
DO - 10.1016/j.jqsrt.2011.09.010
M3 - Article
AN - SCOPUS:80955151921
SN - 0022-4073
VL - 113
SP - 67
EP - 74
JO - Journal of Quantitative Spectroscopy and Radiative Transfer
JF - Journal of Quantitative Spectroscopy and Radiative Transfer
IS - 1
ER -