Anomalous pulse-angle and phase dependence of Hahn`s electron spin echo and multiple-quantum echoes in a photoinduced spin-correlated radical pair

Journal Article · Thu May 01 00:00:00 EDT 1997 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.473752· OSTI ID:544517

Tang, J; Thurnauer, M C ^[1]; Kubo, A ^[2]; Hara, H; Kawamori, A ^[3]

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1. Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Department of Chemistry, Kyoto University, Sakyoku Kyoto 606 (Japan)
3. Faculty of Science, Kwansei Gakuin University, Nishinomiya 662 (Japan)

Formation of two- and three-pulse electron spin echoes and their anomalous pulse-angle and phase dependence in a photoinduced spin-correlated radical pair are examined. Analytical formulae for the unusual Hahn{close_quote}s spin-echo signals and the two-pulse double-quantum echo are derived in terms of the pulse angle, microwave phase, and the time intervals between the laser pulse and the microwave pulses. Such anomalies are shown to be present in both cases of singlet and triplet precursors. Phase dependence and formation of the three-pulse stimulated echo and multiple-quantum echoes are also examined. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 544517
• Journal Information: Journal of Chemical Physics, Vol. 106, Issue 18; Other Information: PBD: May 1997
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
RADICALS
SPIN ORIENTATION
SPIN ECHO
ELECTRON SPIN RESONANCE
CHEMICAL REACTIONS