Advances in electron nuclear double resonance spectroscopy
Conference
·
OSTI ID:441399
- Exxon Research and Engineering Company, Annandale, NJ (United States)
The introduction of pulsed techniques has significantly enhanced the versatility of electron nuclear double resonance (ENDOR) spectroscopy. In pulsed ENDOR experiments, short, intense microwave and radio frequency (rf) pulses are used to induce electron paramagnetic resonance (EPR) and NMR transitions on time scales short with respect to the electron and nuclear spin relaxation times. EPR detection of both spin-population transfer and coherence transfer among the nuclear hyperfine sublevels is then possible. In contrast to the conventional experiments using continuous-wave (CW) irradiation, ENDOR spectra recorded by pulsed population-transfer techniques are not sensitive to the ratio of the electron and nuclear spin relaxation rates. Consequently, pulsed ENDOR experiments are expected to be more widely applicable than CW experiments. Pulsed techniques further offer the possibility for greater sensitivity, enhanced spectral resolution, and for completely new types of double resonance experiments. 31 refs., 6 figs.
- OSTI ID:
- 441399
- Report Number(s):
- CONF-891206--
- Country of Publication:
- United States
- Language:
- English
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