Analysis of matrix nuclei spin flip satellite lines in EPR spectra: Application to trapped hydrogen atoms
✍ Scribed by M. Bowman; Larry Kevan; R.N. Schwartz
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 464 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
The reiative i?tkn&ies and &er,y separation of z&wed EPR L'nes of a p~a~a~netic species and partially forbiddenspin flip slteiiite likes hue to dido:r-djpcrle coupling between tlkparamagnetic species and fie mat&x nuclei have been analyzed in a new way. The analysis allows one to determine both ihe distance to and the number of matrix nuclei that contribute to a given sltollite tranti.tion. For hydroieti atoms trapped in a gamma-irradiated silphuric acid glass at 77 K 'tie analysis indicates that interaction occurs with four mati% protons at a distance of.2.15 A. For trapped hydrogen atoms inphosphoric acid glass the azaly& indicates interaction with few matrix proton; at.2.37 A. ,'
_', '. . 1. In.kodu'ction : '1' The EPRspectra of tr&q_xd p&_kmg&c species som&mes &how &II flip satellite lines due to a dipole-dipole .interaCtion with matrix nuclei. The relative intensity of the satellite. lines to the main allowed l&e of the paramag-.-nek species h?s been analyzed by Trarnmeil et al. [I]. They fopnd that the ratio of the satellite line intensity, T,,
'to observed mati line in.ttinsity, W-J, is given by ,,