LXX International conference "NUCLEUS – 2020. Nuclear physics and elementary particle physics. Nuclear physics technologies"

Metastable states of diatomic beryllium molecule

17 Oct 2020, 14:35

25m

Online

Oral report Section 1. Experimental and theoretical studies of the properties of atomic nuclei. Section 1. Experimental and theoretical studies of the properties of atomic nuclei

Speaker

Sergue Vinitsky (Joint Institute for Nuclear Research, Dubna, Russia)

Description

Calculation of vibrational-rotational bound states and metastable states of a diatomic beryllium molecule important for laser spectroscopy [1] are presented. The solution to the problem is performed using the potential curve given in [2,3] and the authors' software package that implement the iteration Newton method and the high-accuracy finite element method [4]. The efficiency of the proposed approach is demonstrated by calculated for the vibrational-rotational bound states and the first time sharp metastable states with complex eigenenergies (with negative imaginary parts of order $10^{-20}\div10^{-3}$ cm$^{-1}$) in a diatomic beryllium molecule.

[1] Merritt,J.M., Bondybey, V.E., Heaven, M.C. Science 324 (5934), 1548-1551 (2009)
[2] Mitin, A.V., Chem. Phys. Lett. 682, 30-33 (2017)
[3] Gusev, A., Chuluunbaatar, O., Vinitsky, S., et al. Proceedings of SPIE, 11066, 1106619 (2019)
[4] Gusev A.A., Hai L.L., Chuluunbaatar O., et al. Lect. Notes in Computer Sci. 9301, 182-197 (2015).