Zobrazeno 1 - 10
of 220
pro vyhledávání: '"E.C. Reynhardt"'
Autor:
L. Latanowicz, E.C. Reynhardt
Publikováno v:
Chemical Physics Letters. 433:444-449
In a recent experimental study of proton transfer in benzoic acid, employing field cycling NMR relaxometry (Chem. Phys. Lett. 402 (2005) 519 ), the authors came to the conclusion that the transition between the quantum and classical regimes is smooth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac6ddfc33615f07e0b28b7c363cc32a4
https://doi.org/10.1016/j.cplett.2006.11.082
https://doi.org/10.1016/j.cplett.2006.11.082
Publikováno v:
Journal of Molecular Structure: THEOCHEM. 710:111-117
This paper deals with spin-lattice relaxation due to classical jumps and incoherent tunnelling of protons and deuterons in hydrogen bonds in solids. An analysis of experimental spin-lattice relaxation data for carboxylic acids suggests that tunnellin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0e894463205220dfa982ac6e0156bc6
https://doi.org/10.1016/j.theochem.2004.08.035
https://doi.org/10.1016/j.theochem.2004.08.035
Autor:
E.C. Reynhardt
Publikováno v:
Concepts in Magnetic Resonance Part A. :20-35
Spin-lattice relaxation mechanisms of nuclear spins in solids in the presence of low concentrations of paramagnetic centers are discussed. Apart from the electron spin-lattice relaxation mechanism, three-spin processes involving two electron spins an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6990e65832b0ef76a220c0d76132cc05
https://doi.org/10.1002/cmr.a.10077
https://doi.org/10.1002/cmr.a.10077
Autor:
E.C. Reynhardt
Publikováno v:
Concepts in Magnetic Resonance Part A. :36-43
Dynamic nuclear polarization of nuclear spins via the solid-state and thermal mixing effects is discussed. Continuous-wave S- and X-band microwave radiation have been employed to measure 13C signal enhancements and polarization times for 13C nuclei i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af021bf39003c62290063c6adf27ae5f
https://doi.org/10.1002/cmr.a.10078
https://doi.org/10.1002/cmr.a.10078
Publikováno v:
Solid State Nuclear Magnetic Resonance. 20:1-22
13C spin-lattice relaxation times in the laboratory frame, ranging from 1.4 to 36 h, have been measured on a suite of five natural type Ia and Ib diamonds at 4.7 T and 300 K. Each of the diamonds contains two types of fixed paramagnetic centers with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8242a6c12933dd9da1c3ba5a275d56e
https://doi.org/10.1006/snmr.2001.0026
https://doi.org/10.1006/snmr.2001.0026
Autor:
E.C. Reynhardt, L. Latanowicz
Publikováno v:
Chemical Physics Letters. 341:561-567
Spin-lattice relaxation theories for classical and tunneling motions of protons in hydrogen bonds are discussed. It is shown that only one of these theories explains the experimentally determined frequency dependence of proton spin-lattice relaxation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e4375c11a182a4fe0683426411fa821
https://doi.org/10.1016/s0009-2614(01)00526-7
https://doi.org/10.1016/s0009-2614(01)00526-7
Autor:
E.C. Reynhardt, Cornelis J. Terblanche
Publikováno v:
Chemical Physics Letters. 322:273-279
Electron spin–lattice relaxation (SLR) times of P1 and P2 centers have been measured at 300 K at X-band and W-band for one synthetic (type-Ib) and three natural (type-Ia) diamonds using electron paramagnetic resonance spectroscopy. Bi-exponential S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5070e07b149b245948a1668ae2531c38
https://doi.org/10.1016/s0009-2614(00)00411-5
https://doi.org/10.1016/s0009-2614(00)00411-5
Publikováno v:
Chemical Physics Letters. 310:97-102
13 C spin–lattice relaxation times in the laboratory frame have been measured at 295 K in a field of 4.7 T for two natural type-IIb diamonds using nuclear magnetic resonance spectroscopy (NMR). 13 C spin–lattice relaxation is mainly due to mobile
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec6fa0f8682d357bc28dd65ebf06392f
https://doi.org/10.1016/s0009-2614(99)00758-7
https://doi.org/10.1016/s0009-2614(99)00758-7
Publikováno v:
The Journal of Chemical Physics. 109:8471-8477
Spin-lattice relaxation times of P1 centers in a suite of two natural type Ib, two synthetic type Ib, and one natural type Ia diamonds were measured at 9.6 GHz as a function of temperature in the range 300 K>T>4.2 K. An analysis of the results reveal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfbac94e805715c84c676978ddeffe1e
https://doi.org/10.1063/1.477511
https://doi.org/10.1063/1.477511
Publikováno v:
Molecular Physics. 93:323-328
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a30a0e89bec66812b749847825285959
https://doi.org/10.1080/00268979809482216
https://doi.org/10.1080/00268979809482216