Direct Observation of Spin Gaps in Electron Spin Resonance

2003 ◽  
Vol 72 (Suppl.B) ◽  
pp. 53-60 ◽  
Author(s):  
Tôru Sakai
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Direct Observation ◽  
Spin Resonance

Spin trapping of radicals formed during radiolysis of aqueous solutions. Direct electron spin resonance observations

1976 ◽  
Vol 54 (2) ◽  
pp. 275-279 ◽  
Author(s):  
Frederick Peter Sargent ◽  
Edward Michael Gardy
Keyword(s):  
Electron Spin Resonance ◽  
Aqueous Solutions ◽  
Electron Spin ◽  
Direct Observation ◽  
Electron Accelerator ◽  
Esr Spectra ◽  
Spin Trapping ◽  
Spin Resonance

It is shown that esolv, H•, and OH formed by the radiolysis of water by 3 MeV electrons are trapped by nitroso and nitrone compounds to give nitroxides with well defined esr spectra. Three spin trapping agents were used, nitroso-t-butane, phenyl-t-butyl nitrone, and 5,5′-dimethyl pyrroline-1-oxide. The latter was shown to be an excellent compound for these studies. Complications due to the instability of some of the nitroxides were overcome by coupling the electron accelerator to the esr spectrometer to permit direct observation of the spectra.

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