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AbstractAbstract
[en] A novel mechanism of electron-nuclear cross relaxation due to nuclear spin-spin flips is proposed. Equations are derived which relate the polarization of spin packets in a nonuniformly broadened EPR line with the inverse temperature of the nuclear dipole-dipole pool (NDDP). A method is described for identification of the mechanism with is based on the variation of the EPR line shape cooling of the NDDP
Original Title
Dinamika ehlektronno-yadernykh spinovykh sistem v tverdykh telakh
Source
9 refs.; for English translation see the journal Sov. Phys. - JETP.
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Journal Article
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Zhurnal Ehksperimental'noj i Teoreticheskoj Fiziki; v. 72(1); p. 180-183
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AbstractAbstract
[en] Frequency oscillations are reported in the time-resolved ESR spectra from radicals produced by flash photolysis and shown to be consistent with theoretical predictions. They are manifest as additional peaks in the ESR spectra obtained at short times after the flash and could easily be misinterpreted as due to hyperfine coupling. Methods for their suppression are suggested. Resolution limitation at periods <= μs after the flash is also discussed. (orig.)
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Journal Article
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Chemical Physics Letters; ISSN 0009-2614;
; v. 77(1); p. 127-130

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AbstractAbstract
[en] An analysis of the effect of B1 inhomogeneity on spin density and T1 contrasted images is here given. Distorsions both in saturation recovery and inversion recovery sequences are found. The impact of these distorsion on in vivo spectroscopy, where quantitative data are required, is also discussed. In general, these aspects are found to be reduced at shorter-time parameters of the pulse sequences
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Journal Article
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Nuovo Cimento, D; CODEN NCSDD; v. 10(1); p. 31-42
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AbstractAbstract
No abstract available
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Journal Article
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Comments on Solid State Physics; v. 5(1); p. 23-29
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[en] The basic principles of NMR ad NMR imaging are explained. Contrast devices in NMR images like spin-echo with enhanced T2 and partial saturation images with enhanced T1 contrast, are treated briefly. Techniques for improving image quality, spatial resolution and decreasing measuring time are discussed briefly. 6 refs.; 9 figs
Primary Subject
Source
Wamsteker, K. (Mariastichting, Haarlem (Netherlands)); Jonas, U. (Rijksuniversiteit Leiden (Netherlands). Academisch Ziekenhuis); Veen, G. van der; Waes, P.F.G.M. van (Rijksuniversiteit Utrecht (Netherlands). Academisch Ziekenhuis) (eds.); International Congress Series; no. 747; 849 p; ISBN 0-444-80961-9;
; 1987; p. 117-123; Excerpta Medica; Amsterdam (Netherlands); DOCUMED Europe '87, 1. European conference on the applications of imaging and visual documentation in medicine; Amsterdam (Netherlands); 24-27 May 1987; Contains previously published material.

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Book
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Conference
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AbstractAbstract
[en] The basic principles that must be known to interpret NMR images, are exposed. After an analysis of the fundamental parameters (T1 and T2 relaxation time particularly), the main elements necessary to analyse a Spin Echo image are presented
[fr]
Nous exposons les principes de base indispensables a connaitre pour interpreter un document en IRM (Imagerie par Resonance Magnetique). Apres avoir analyse les parametres fondamentaux (temps de relaxation T1 et T2 en particulier), nous presentons les principales notions qui permettent de lire une image en Echo de SpinOriginal Title
Comment lire une image IRM
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AbstractAbstract
No abstract available
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Journal Article
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Physics Letters. A; v. 50(5); p. 353-354
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[en] The author traces the encounter of μSR physicists with the Kubo-Toyabe theory and the subsequent development of zero-field μSR by mutual communication between experiment and theory
Source
Copyright (c) 1997 Kluwer Academic Publishers; Country of input: International Atomic Energy Agency (IAEA)
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Bini, Donato; Cherubini, Christian; Mashhoon, Bahram
Sezione INFN di Firenze, Polo Scientifico, Via Sansone 1, I-50019 Sesto Fiorentino (Finland), Italy; Faculty of Engineering, University Campus Bio-Medico of Rome, via E Longoni 47, 00155 Rome (Italy); Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 2EG (United Kingdom)2004
Sezione INFN di Firenze, Polo Scientifico, Via Sansone 1, I-50019 Sesto Fiorentino (Finland), Italy; Faculty of Engineering, University Campus Bio-Medico of Rome, via E Longoni 47, 00155 Rome (Italy); Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 2EG (United Kingdom)2004
AbstractAbstract
[en] The massless field perturbations of the accelerating Minkowski and Schwarzschild spacetimes are studied. The results are extended to the propagation of the Proca field in Rindler spacetime. We examine critically the possibility of existence of a general spin-acceleration coupling in complete analogy with the well-known spin-rotation coupling. We argue that such a direct coupling between spin and linear acceleration does not exist
Primary Subject
Source
S0264-9381(04)82049-5; Available online at http://stacks.iop.org/0264-9381/21/3893/cqg4_16_005.pdf or at the Web site for the journal Classical and Quantum Gravity (ISSN 1361-6382) http://www.iop.org/; Country of input: International Atomic Energy Agency (IAEA)
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AbstractAbstract
[en] It is shown that theory of spin temperature in the rotating frame leads to the statement that relaxation of a system of spins in a rotating field takes place on the permanent states, i.e. on the adiabatically invariant states of the system
[fr]
On montre que la theorie de la temperature de spin dans le referentiel tournant revient a admettre que la relaxation d'un systeme de spins dans un champ tournant se fait sur les etats permanents, c'est-a-dire sur les etats invariants adiabatiques du systemeOriginal Title
Sur le concept de temperature de spin dans le referentiel tournant et la theorie des etats permanents
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Journal Article
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Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences. Serie B; v. 280(19); p. 589-592
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