
Accession Number : AD0721900
Title : Classical Path Broadening Functions for a DebyeShielded Interaction,
Corporate Author : JOINT INST FOR LAB ASTROPHYSICS BOULDER COLO
Personal Author(s) : Cooper,J. ; Klarsfeld,S. ; Oertel,G. K.
Report Date : 17 MAR 1971
Pagination or Media Count : 49
Abstract : Stark broadening calculations of isolated neutral atom lines in the classical path approximation usually involve an electron (moving along a straight line path) interacting directly with the atom. Correlations between the electrons are then taken into account by imp sing a cutoff in the interaction, when the distance from the atom, rho exceeds the Debye length, rho sub D. A more consistent procedure for the correlation effects is to replace the direct interaction of the electron by a Debyeshielded interaction. The functions A, B, a and b which are required in the theory when the Debyeshielded interaction is used are considered in detail in this report. When rho/rho sub D < 0.1, it is found that the a and b functions may be closely reproduced by using unshielded functions in conjunction with an upper cutoff of 0.68 rho sub D. (Author)
Descriptors : (*ELECTRON IRRADIATION, ATOMS), (*STARK EFFECT, ATOMS), ELECTRIC FIELDS, INTERACTIONS, DIFFERENTIAL EQUATIONS, INTEGRAL TRANSFORMS, NUMERICAL INTEGRATION, ASYMPTOTIC SERIES, COMPUTER PROGRAMS
Subject Categories : Physical Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE