On calculations of metastable and Rydberg states of diatomic beryllium molecule and antiprotonic helium atom

被引：2

作者：

Derbov, V. L. ^{[1
]}

Chuluunbaatar, G. ^{[2
,3
]}

Gusev, A. A. ^{[2
]}

Chuluunbaatar, O. ^{[2
,4
]}

Vinitsky, S. I. ^{[2
,3
]}

Gozdz, A. ^{[5
]}

Krassovitskiy, P. M. ^{[1
,6
]}

Mitin, A. V. ^{[7
,8
]}

机构：

[1] NG Chernyshevsky Saratov Natl Res State Univ, Saratov, Russia

[2] Joint Inst Nucl Res, Dubna, Russia

[3] Peoples Friendship Univ Russia RUDN Univ, Moscow 117198, Russia

[4] Natl Univ Mongolia, Inst Math, Ulaanbaatar, Mongolia

[5] Univ M Curie Sklodowska, Inst Phys, Lublin, Poland

[6] Inst Nucl Phys, Alma Ata, Kazakhstan

[7] Moscow Inst Phys & Technol, Dolgoprudnyi, Moscow Region, Russia

[8] RAS, Joint Inst High Temp, Moscow, Russia

来源：

SARATOV FALL MEETING 2019: LASER PHYSICS, PHOTONIC TECHNOLOGIES, AND MOLECULAR MODELING | 2020年 / 11458卷

关键词：

laser spectroscopy; eigenvalue problem; bound and metastable states; finite element method; diatomic beryllium molecule; vibration-rotation states; antiprotonic helium; DIMER;

D O I：

10.1117/12.2565816

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The computational scheme and calculation results of bound, metastable and Rydberg states of atomic and molecular systems important for laser spectroscopy are presented. The solution to the problem is performed using the authors' software package (see program libraries of the Computer Physics Communications journal and of the Joint Institute for Nuclear Research) that implement the high-accuracy finite element method. The FORTRAN procedure of matching tabulated potential functions with van der Waals asymptotic potential using interpolation Hermite polynomials which provides continuity of both the function itself and its derivative is presented. The efficiency of the proposed approach is demonstrated by calculated for the first time sharp metastable states with complex eigenenergies in a diatomic beryllium molecule and weakly bound Rydberg states of antiprotonic helium atom.

引用

页数：11

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