Dissociation energy (D0) of rovibrational levels of 4HeH+ has been predicted theoretically to the accuracy of the order of 0.01 cm−1. The calculations take into account adiabatic and nonadiabatic corrections as well as relativistic and quantum electrodynamics effects. For the ground rovibrational level D0 = 14 874.215(10) cm−1 and it differs by several tens of the inverse centimeter from previous theoretical estimations. For a collection of about 50 transition energies measured between dipole connected levels the difference between theory and experiment is of the order of hundredths of cm−1 or less.
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Research Article| November 30 2012
Rovibrational levels of helium hydride ion
Krzysztof Pachucki, Jacek Komasa; Rovibrational levels of helium hydride ion. J. Chem. Phys. 28 November 2012; 137 (20): 204314. https://doi.org/10.1063/1.4768169
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