| Autor: |
Fedin, Matvey, Kälin, Moritz, Gromov, Igor, Schweiger, Arthur |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 1/15/2004, Vol. 120 Issue 3, p1361-1368, 8p, 2 Diagrams, 8 Graphs |
| Abstrakt: |
An approach to pulse electron paramagnetic resonance (EPR) experiments which are based on two different resonance fields is introduced. Instead of using two microwave (mw) sources or a magnetic field jump, bichromatic pulses consisting of a transverse microwave field with frequency ω[sub mw] and a longitudinal radio frequency field with frequency ω[sub rf] are employed. Such bichromatic pulses excite a number of multiple photon transitions at frequencies ω[sub mw]+kω[sub rf] (k∈Z). The π-photon-induced transparency phenomenon is used to select the required transitions. This approach is used in the stimulated soft electron spin echo envelope modulation and the four-pulse double electron-electron resonance experiments. The results obtained using the bichromatic pulse approach are in agreement with those obtained with the standard pulse EPR techniques. It is shown that applying bichromatic pulses is straightforward and advantageous in several respects. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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