Line Positions and Line Strengths for the 3 2 1Σ+g
D C. Robie, Joseph T. Hodges
Several rotational lines in the S and Q branches (including the previously unobserved Q32 and Q33 lines) of the 3-0 electric quadrupole band of H2 have been detected by cavity ring-down spectroscopy. Line strengths were measured at densities between 2.7X1018 and 7.7X1018 molecules cm-3 at room temperature. Observed line strengths in the S branch are consistent with earlier measurements, and systematically below theoretical calculations (relative differences of approximately 10 % for the S31, S32 and S33 lines, and nearly 30 % for the S30 line). Line strength measurements for the Q branch range from 25 % to 33 % below theoretical calculations.
and Hodges, J.
Line Positions and Line Strengths for the 3 <-- 0 Electric Quadrupole Band of H<sub>2</sub> <sup>1</sup>Σ<sup>+</sup> <sub>g</sub>, Journal of Chemical Physics
(Accessed June 8, 2023)