Published 1988 | Version v1
Miscellaneous Metadata-only

Photoionization of atoms and ions

Creators

  • 1. Pittsburgh Univ., PA (USA). Dept. of Physics and Astronomy

Description

Calculations of subshell photoionization processes are performed for various atoms (neon, argon, iron and uranium), for various degrees of ionization, within the independent-particle approximation. We discuss the asymptotic behavior and the high-energy features of these cross sections, focusing on subshell cross-section ration functions. Near threshold, a modified Dirac-Fock theory is used to study core relaxation effects on photoabsorption for argon. Finally we examine the ionic neon total photoabsorption cross section as a function of degree of ionization. (author)

Availability note (English)

Available from the Library of the Comissao Nacional de Energia Nuclear, RJ, Brazil.

Abstract (Portuguese)

Calculos do processo de fotoionizacao de subcamadas sao feitos para varios atomos (neonio, argonio, ferro e uranio), graus de ionizacao, dentro de uma aproximacao independente da particula. Discute-se o comportamento asintotico e os perfis de alta-energia dessas secoes de choque, focalizando a subcamada das funcoes da razao secao de choque. Perto do limite, a teoria modificada de Dirac-Fock e usada para estudar os efeitos da relaxacao do nucleo na fotoabsorcao para o argonio. Finalmente examina-se a secao de choque total da fotoabsorcao do neon ionico como uma funcao do grau de ionizacao

Additional details

Publishing Information

Imprint Title
Proceedings of the 4. International Symposium on Radiation Physics
Imprint Pagination
467 p.
Journal Page Range
p. 39-44.

Conference

Title
4. International Symposium on Radiation Physics.
Dates
3-7 Oct 1988.
Place
Sao Paulo, SP (Brazil).

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
21016002
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
ATOMIC IONS; CENTRAL POTENTIAL; CROSS SECTIONS; K SHELL; NEON IONS; PHOTOIONIZATION; SINGLE-PARTICLE MODEL
Descriptors DEC
CHARGED PARTICLES; ELECTRONIC STRUCTURE; IONIZATION; IONS; POTENTIALS