Nonrelativistic energy of tritium-containing hydrogen molecule isotopologues

Abstract

The nonrelativistic energy of low lying rovibrational levels of HT, DT, and T${}_2$ is determined to an absolute accuracy of ${10}^{-7}-{10}^{-8}{\mathrm{c}\mathrm{m}}^{-1}$ using the variational method with the four-body nonadiabatic James-Coolidge functions. The new results increase the accuracy of the nonrelativistic component of the energy levels by several orders of magnitude. As a consequence, the total transition energies are improved by at least an order of magnitude.

GRAPHICAL ABSTRACT

Keywords:

• Hydrogen molecule
• tritium isotopologues
• nonrelativistic energy
• nonadiabatic James-Coolidge wavefunction

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This research was supported by National Science Center (Poland) Grant No. 2017/25/B/ST4/01024, as well as by a computing grant from the Poznan Supercomputing and Networking Center.