Fisher-Shannon analysis of ionization processes and isoelectronic series

Journal Article · Sat Sep 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.032502· OSTI ID:21015962

Sen, K D ^[1]; Antolin, J ^[2]; Angulo, J C ^[3]

---

1. School of Chemistry, University of Hyderabad, Hyderabad-500046 (India)
2. Departamento de Fisica Aplicada, EUITIZ, Universidad de Zaragoza, 50009-Zaragoza (Spain)
3. Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Granada, 18071-Granada (Spain)

The Fisher-Shannon plane which embodies the Fisher information measure in conjunction with the Shannon entropy is tested in its ability to quantify and compare the informational behavior of the process of atomic ionization. We report the variation of such an information measure and its constituents for a comprehensive set of neutral atoms, and their isoelectronic series including the mononegative ions, using the numerical data generated on 320 atomic systems in position, momentum, and product spaces at the Hartree-Fock level. It is found that the Fisher-Shannon plane clearly reveals shell-filling patterns across the periodic table. Compared to position space, a significantly higher resolution is exhibited in momentum space. Characteristic features in the Fisher-Shannon plane accompanying the ionization process are identified, and the physical reasons for the observed patterns are described.

• OSTI ID: 21015962
• Journal Information: Physical Review. A, Vol. 76, Issue 3; Other Information: DOI: 10.1103/PhysRevA.76.032502; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
COMPARATIVE EVALUATIONS
DISTRIBUTION
ENTROPY
HARTREE-FOCK METHOD
INFORMATION THEORY
IONIZATION
IONS
PERIODIC SYSTEM
RESOLUTION
VARIATIONS