Accession Number:

ADA621634

Title:

Physical Basis for Hund's Rule

Descriptive Note:

Journal article

Corporate Author:

HARRY DIAMOND LABS ADELPHI MD

Personal Author(s):

• Karayianis, N.
• Morrison, C. A.

Report Date:

1964-03-01

Pagination or Media Count:

6.0

Abstract:

It is shown that a consideration of the Coulombic and spin-orbit interactions between the electrons of a given atomic configuration is sufficient to arrive at a lowest-energy state consistent with Hunds rule. The maximum-spin requirement of Hunds rule is a result of minimum Coulombic energy alone, whereas maximum orbital angular momentum consistent with maximum spin is a result of minimum spin-orbit energy, It is argues that, to first order, the spin-spin interaction is not a principal factor in determining the properties of this state. The simple notions used to obtain these results are extended to excited states of the nf6 configuration and are show to give results consistent with calculations based on hydrogenic wavefunctions.

Descriptors:

• *ANGULAR MOMENTUM
• *ATOMIC ENERGY LEVELS
• ATOMIC ORBITALS
• ATOMIC STRUCTURE
• ELECTRONS
• GROUND STATE
• SPIN ORBIT COUPLING
• SPIN STATES
• WAVE FUNCTIONS

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE