
TY  - JOUR
A1  - Hughes, Sudarko, J. M. 
A1  - von Nagy-Felsobuki, E. I. 
T1  - Ro-vibrational Transition Energies and Absorption Intensities of the <emph type="7">1</emph>A<emph tye="8">1</emph> States of H<emph tye="8">2</emph>O, He<emph tye="8">2</emph>O<emph type="7">2+</emph> and He<emph tye="8">2</emph>S<emph type="7">2+</emph>
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 2001
VL  - 53
IS  - 5
SP  - 665
EP  - 688
KW  - 
UR  - https://doi.org/10.1071/PH00027 
N2  - Variational ro&#8211;vibrational wave functions are calculated using an Eckart&endash;Watson Hamiltonian, which has embedded an ab initio potential energy function. These wave functions,together with an ab initio dipole moment function,are employed to predict transition energies and absorption intensities. The radiative transition probability integrals are determined using a novel adaptation of the Harris&#8211;Engerholm&#8211;Gwinn integration scheme. The method and solution algorithm yields results in excellent agreement with previously determined experimental and theoretical electric dipole allowed transitions for the 1 A 1 ground state of H 2 O. The method has also been applied to the 1 A 1 states of the helide analogs of water, namely He 2 O 2+ and He 2 S 2+, in order to predict their ro&#8211;vibrational transition energies and absorption intensities, thereby facilitating their possible interstellar detection. 
ER  -

