Accession Number:

AD0831594

Title:

THEORETICAL STUDY OF EXCITED STATES OF ATOMIC SPECIES OF HELIUM TYPE (HELIO TIPO ATOMU KAI KURIU SUZADINTU BUSENU TEORINIS NAGRINEJIMAS),

Descriptive Note:

Corporate Author:

AMERICAN METEOROLOGICAL SOCIETY BOSTON MA

Personal Author(s):

• Kancerevicius, A.
• Normantas, E.

Report Date:

1966-05-01

Pagination or Media Count:

16.0

Abstract:

The atomic species He and Li are studied in the configurations 1s2s and 1s3s. It is shown that if orthogonality is ensured between the wave functions of an excited state and the ground state, the energies of the singlet terms of the configurations 1s2s and 1s3s are found to be higher than the experimental energy. The two-configuration approximation, 1sns - 1s2, is applied to the configurations 1s2s and 1s3s, and the three-configuration approximation, 1s2s - 1s2 - 2p3p, to the configuration 1s2s. The two-configuration approximation, 1s2s - 2p3p, is applied to the triplet term of the configuration 1s2s. The energy value calculated in the multiconfiguration approximation is in good agreement with the experimental energy value. Author

Descriptors:

• *ATOMIC ORBITALS
• APPROXIMATION(MATHEMATICS)
• ATOMIC SPECTROSCOPY
• ATOMIC ENERGY LEVELS
• EXCITATION
• CONFIGURATIONS
• WAVE FUNCTIONS
• HELIUM
• LITHIUM
• IONS
• USSR

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy
• Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE