Detecting the Transient ENDOR Response

Free radicals at low temperature are sometimes difficult to study by electron-nuclear double-resonance spectroscopy with the commonly available detection schemes. In some cases, slow nuclear spin relaxation limits the steady-state ENDOR response. A detection scheme optimized for transient signals is...

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Veröffentlicht in:Journal of magnetic resonance. Series A 1995-02, Vol.112 (2), p.220-224
Hauptverfasser: Hoganson, C.W., Babcock, G.T.
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container_title Journal of magnetic resonance. Series A
container_volume 112
creator Hoganson, C.W.
Babcock, G.T.
description Free radicals at low temperature are sometimes difficult to study by electron-nuclear double-resonance spectroscopy with the commonly available detection schemes. In some cases, slow nuclear spin relaxation limits the steady-state ENDOR response. A detection scheme optimized for transient signals is described that circumvents this limitation on signal amplitude. The apparatus employs pulsed radiofrequency fields with advance of the radiofrequency between pulses. Some spectra of semiquinone and tyrosine radicals are presented to illustrate the utility of the technique.
doi_str_mv 10.1006/jmra.1995.1034
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subjects Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Multiple resonances (including double and higher-order resonance processes, such as double nuclear magnetic resonance, electron double resonance and microwave optical double resonance)
Physics
title Detecting the Transient ENDOR Response
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