Vibrational Relaxation of Molecular Ions at Low Temperatures: O 2- ( v =1) + Ar
β Scribed by Shin, H. K.
- Book ID
- 121347898
- Publisher
- American Chemical Society
- Year
- 2005
- Tongue
- English
- Weight
- 147 KB
- Volume
- 109
- Category
- Article
- ISSN
- 1089-5639
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π SIMILAR VOLUMES
## This paper presents a detailed study of the temperature dependence of the longitudinal relaxation time T I and of the coherence time T e o[ a population of ionic molecular impurities in silica glass. Electric dipolar echoes taken in a temperature range 4-22 mK and a frequency of 370 MHz show that
presence of 02 leads to relaxation by slow spin diffusion to the paramagnetic site at low temperatures but by direct paramagnetic relaxation by diffusing 02 molecules at high temperatures. This effect is related to the temperature-dependent lifetime of the Oz-carbazole complex.