Benchmark Linelists and Radiative Cooling Functions for LiH Isotopologues

Linelists and radiative cooling functions in the local thermodynamic equilibrium limit have been computed for the six most important isotopologues of lithium hydride, (LiH)-Li-7, (LiH)-Li-6, (LiD)-Li-7, (LiD)-Li-6, (LiT)-Li-7, and (LiT)-Li-6. The data are based on the most accurate dipole moment and potential energy curves presently available, the latter including adiabatic and leading relativistic corrections. Distance-dependent reduced vibrational masses are used to account for non-adiabatic corrections of the rovibrational energy levels. Even for (LiH)-Li-7, for which linelists have been reported previously, the present linelist is more accurate. Among all isotopologues, (LiH)-Li-7 and (LiH)-Li-6 are the best coolants, as shown by the radiative cooling functions.