Inner-shell photoemission from the iodine atom in CH3I
Creators
- 1. Materials and Molecular Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 and Department of Chemistry, University of California, Berkeley, California 94720
Description
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 CH3I. 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
Additional details
Publishing Information
- Journal Title
- Phys. Rev., A
- Journal Volume
- 30
- Journal Issue
- 1
- Series
- Phys. Rev., A.
- Journal Page Range
- 239-244
- ISSN
- 0556-2791
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 16007721
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ANGULAR DISTRIBUTION; CROSS SECTIONS; ELECTRONIC STRUCTURE; ENERGY SPECTRA; IODINE; METHYL IODIDE; N SHELL; PHOTOELECTRON SPECTROSCOPY; PHOTOEMISSION
- Descriptors DEC
- DISTRIBUTION; ELECTRON SPECTROSCOPY; ELEMENTS; EMISSION; HALOGENS; NONMETALS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC IODINE COMPOUNDS; SECONDARY EMISSION; SPECTRA; SPECTROSCOPY