Inner-shell photoemission from the iodine atom in CH/sub 3/I

Journal Article · Sun Jul 01 04:00:00 EDT 1984 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.30.239· OSTI ID:6673129

Lindle, D W; Kobrin, P H; Truesdale, C M; Ferrett, T A; Heimann, P A; Kerkhoff, H G; Becker, U; Shirley, D A

The first photoemission measurements of the I 4d and I ''4p'' subshells in methyl iodide are presented. Cross sections and angular-distribution asymmetry parameters were measured from threshold to 300 eV photon energy for the I 4d level (to 440 eV for the asymmetry parameter), and from 175 to 300 eV for the I ''4p'' level. The I 4d results exhibited atomiclike behavior throughout this energy range, mimicking the behavior of the Xe 4d subshell. Theoretical calculations for the Xe 4d subshell agree very well with the I 4d asymmetry-parameter results, indicating that the I 4d subshell is localized on the iodine atom in CH/sub 3/I. Nearer to threshold, the spin-orbit final states, 4d/sub 5/2/ and 4d/sub 3/2/, were resolved and exhibited nonstatistical intensity ratios mainly due to a kinetic energy effect. The I ''4p'' asymmetry-parameter results were found to be essentially identical to the asymmetry-parameter results for the I 4d subshell at the same photon energies, suggesting strong interchannel coupling. This result is discussed with respect to collective effects in the iodine N shell.

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 and Department of Chemistry, University of California, Berkeley, California 94720
• OSTI ID: 6673129
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 30:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
CROSS SECTIONS
DISTRIBUTION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
EMISSION
ENERGY SPECTRA
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENS
IODINATED ALIPHATIC HYDROCARBONS
IODINE
METHYL IODIDE
N SHELL
NONMETALS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
SECONDARY EMISSION
SPECTRA
SPECTROSCOPY