Accession Number : AD0687525

Title :   ELECTRON SPIN RESONANCE SPECTRUM OF N2-TRAPPED IN KCl, KBr, AND KI,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF APPLIED CHEMISTRY

Personal Author(s) : Brailsford,J. R. ; Morton,J. R. ; Vannotti,L. E.

Report Date : 12 SEP 1968

Pagination or Media Count : 6

Abstract : The EPR spectra attributable to N2(-) trapped in KCl, KBr, and KI have been observed between 2 and 20K. The N2(-) impurity occupies a negative-ion vacancy and is oriented so that the equilibrium direction of the N-N bond is a (100) direction of the crystal. The principal g factors of N2(-) are characteristic of a doublet Pi1/2 ground state, and the nodal plane of the pi orbital is a (100) plane of the crystal. In KI, N2(-) appears to be undergoing a libratory motion, which is, however, confined to this (100) plane. The 14N hyperfine structure, which is perfectly resolved in KCl:N2(-), is used to determine atomic parameters. (Author)

Descriptors :   (*NITROGEN, *ELECTRON PARAMAGNETIC RESONANCE), (*CRYSTAL DEFECTS, NITROGEN), (*POTASSIUM COMPOUNDS, CRYSTAL DEFECTS), IONS, IMPURITIES, NUCLEAR SPINS, MOLECULAR ORBITALS, CHLORIDES, BROMIDES, IODIDES

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE