Buntkowsky, Gerd ; Ivanov, Konstantin L. ; Zimmermann, Herbert ; Vieth, Hans-Martin (2017)
Coherent manipulation of non-thermal spin order in optical nuclear polarization experiments.
In: The Journal of Chemical Physics, 146 (11)
doi: 10.1063/1.4976990
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
Time resolved measurements of Optical Nuclear Polarization (ONP) have been performed on hyperpolarized triplet states in molecular crystals created by light excitation. Transfer of the initial electron polarization to nuclear spins has been studied in the presence of radiofrequency excitation; the experiments have been performed with different pulse sequences using different doped molecular systems. The experimental results clearly demonstrate the dominant role of coherent mechanisms of spin order transfer, which manifest themselves in well pronounced oscillations. These oscillations are of two types, precessions and nutations, having characteristic frequencies, which are the same for the different molecular systems and the pulse sequences applied. Hence, precessions and nutations constitute a general feature of polarization transfer in ONP experiments. In general, coherent manipulation of spin order transfer creates a powerful resource for improving the performance of the ONP method, which paves the way to strong signal enhancement in nuclear magnetic resonance.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Buntkowsky, Gerd ; Ivanov, Konstantin L. ; Zimmermann, Herbert ; Vieth, Hans-Martin |
| Art des Eintrags: | Bibliographie |
| Titel: | Coherent manipulation of non-thermal spin order in optical nuclear polarization experiments |
| Sprache: | Englisch |
| Publikationsjahr: | 2017 |
| Verlag: | AIP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | The Journal of Chemical Physics |
| Jahrgang/Volume einer Zeitschrift: | 146 |
| (Heft-)Nummer: | 11 |
| Kollation: | 13 Seiten |
| DOI: | 10.1063/1.4976990 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Time resolved measurements of Optical Nuclear Polarization (ONP) have been performed on hyperpolarized triplet states in molecular crystals created by light excitation. Transfer of the initial electron polarization to nuclear spins has been studied in the presence of radiofrequency excitation; the experiments have been performed with different pulse sequences using different doped molecular systems. The experimental results clearly demonstrate the dominant role of coherent mechanisms of spin order transfer, which manifest themselves in well pronounced oscillations. These oscillations are of two types, precessions and nutations, having characteristic frequencies, which are the same for the different molecular systems and the pulse sequences applied. Hence, precessions and nutations constitute a general feature of polarization transfer in ONP experiments. In general, coherent manipulation of spin order transfer creates a powerful resource for improving the performance of the ONP method, which paves the way to strong signal enhancement in nuclear magnetic resonance. |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Physikalische Chemie |
| Hinterlegungsdatum: | 02 Aug 2024 12:37 |
| Letzte Änderung: | 02 Aug 2024 12:37 |
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Verfügbare Versionen dieses Eintrags
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Coherent manipulation of non-thermal spin order in optical nuclear polarization experiments. (deposited 11 Jan 2022 14:46)
- Coherent manipulation of non-thermal spin order in optical nuclear polarization experiments. (deposited 02 Aug 2024 12:37) [Gegenwärtig angezeigt]
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