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Biscegli, Clovis I.; Colnago, Luiz A.; Panepucci, Horacio A.
Proceedings of the 3. Meeting of nuclear magnetic resonance users1991
Proceedings of the 3. Meeting of nuclear magnetic resonance users1991
AbstractAbstract
[en] This work describes the construction of a EPR cavity with tunable resonance frequency and coupling, particularly designed for double electron-nucleus resonance such as ENDOR and Dnp
Original Title
Cavidade de RPE de frequencia e acoplamento ajustaveis
Secondary Subject
Source
Associacao de Usuarios de Ressonancia Magnetica Nuclear, Rio de Janeiro, RJ (Brazil); 425 p; 1991; p. 281-286; 3. Meeting of nuclear magnetic resonance users; 3. Encontro de usuarios de ressonancia magnetica nuclear; Buzios, RJ (Brazil); 14-18 May 1991; Available from the Library of the Brazilian Nuclear Energy Commission, Rio de Janeiro; 2 refs., 3 figs.
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An, Nguyen Ba, E-mail: nban@iop.vast.ac.vn2013
AbstractAbstract
[en] We study entanglement dynamics of two and three atoms stored in a common nonperfect cavity together with some other nonentangled atoms. It is guessed at first thought that the presence of nonentangled atoms would favor the decoherence process of the interested entangled atoms. We show, on the contrary, that it is not so. Namely, as results of a rigorous nonperturbative analysis, disentanglement rate of the interested atoms decreases with the increase of the number of nonentangled atoms. If the number of nonentangled atoms is sufficiently large, the entanglement of interested atoms could be protected efficiently.
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S0375-9601(13)00682-8; Available from http://dx.doi.org/10.1016/j.physleta.2013.07.032; Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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[en] Scientific measurements of sound generation and radiation by musical instruments are surprisingly hard to correlate with the subtle and complex judgments of instrumental quality made by expert musicians
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(c) 2014 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
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Kruk, D.; Blicharska, B.
Materials presented at the 27 All-Polish Seminar on the Nuclear Magnetic Resonance and its application1995
Materials presented at the 27 All-Polish Seminar on the Nuclear Magnetic Resonance and its application1995
AbstractAbstract
[en] A mathematical model to describe the NMR processes is presented. In this model the influence of radiation attenuation on the relaxation time is taken into account
Original Title
Wplyw tlumienia promieniowania na procesy relaksacji MRJ
Source
Hennel, J.W. (comp.); Institute of Nuclear Physics, Cracow (Poland). Funding organisation: National Atomic Energy Agency, Warsaw (Poland); Polish Academy of Sciences, Warsaw (Poland); Bruker Analytische Messtechnik GmbH, Rheinstetten (Germany); Siemens AG, Berlin (Germany); Varian Associates, Santa Clara, CA (United States); 434 p; 1995; p. 71-74; 27. All-Polish seminar on the nuclear magnetic resonance and its application; 27 Ogolnopolskie seminarium na temat magnetycznego rezonansu jadrowego i jego zastosowan; Cracow (Poland); 1-2 Dec 1994; 5 figs.
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AbstractAbstract
[en] Micromechanical sensing of magnetic force was used to detect nuclear magnetic resonance with exceptional sensitivity and spatial resolution. With a 900 angstrom thick silicon nitride cantilever capable of detecting subfemtonewton forces, a single shot sensitivity of 1.6 x 1013 protons was achieved for an ammonium nitrate sample mounted on the cantilever. A nearby millimeter-size iron particle produced a 600 tesla per meter magnetic field gradient, resulting in a spatial resolution of 2.6 micrometers in one dimension. These results suggest that magnetic force sensing is a viable approach for enhancing the sensitivity and spatial resolution of nuclear magnetic resonance microimaging
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Hancorn, S.D.J.
Cambridge Univ. (United Kingdom)1995
Cambridge Univ. (United Kingdom)1995
AbstractAbstract
No abstract available
Source
Oct 1995; 140 p; Available from British Library Document Supply Centre- DSC:D198788; Thesis (Ph.D.)
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AbstractAbstract
[en] We suggest to improve the ECR beam optic qualities by taking into account some studies made on other kind of ions sources
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International Conference on the Physics of multiply charged ions and International Workshop on E.C.R. ion sources; Grenoble (France); 12-16 Sep 1988
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Journal de Physique (Les Ulis), Colloque; ISSN 0449-1947;
; CODEN JPQCA; v. 50(C1); p. C1.819-C1.826

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AbstractAbstract
[en] Electron spin resonance (ESR) dating can be applied to a wide range of materials and has probably the largest potential amongst the dating techniques for the Quaternary. The dating procedure is very complex and many problems have to be addressed before this method can be regarded as a routine dating technique. This contribution gives a short introduction to ESR dating and tries to outline the specific advantages of this dating method, but also give a very personal opinion about the problems that need attention. It focuses on the actual ESR part of the dating procedure: signal definition and accumulated dose estimation. (author)
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6. international specialist seminar on thermoluminescence and electron spin resonance dating; Clermont-Ferrand (France); 2-6 Jul 1990
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Bonagamba, T.J.; Vidoto, E.L.G.; Moretto, G.; Giannoni, R.A.; Martins, M.J.; Panepucci, H.
Proceedings of the 13. National Meeting on Condensed Matter Physics1990
Proceedings of the 13. National Meeting on Condensed Matter Physics1990
AbstractAbstract
[en] Published in summary form only
Original Title
Implantacao da tecnica de espectroscopia de alta resolucao em solidos por ressonancia magnetica nuclear (RMN)
Source
Almeida Fonseca, A.L. de (Brasilia Univ., DF (Brazil)); Koiler, B. (Pontificia Univ. Catolica do Rio de Janeiro, RJ (Brazil)); Brescansin, L.M. (Universidade Estadual de Campinas, SP (Brazil)) (and others); Sociedade Brasileira de Fisica, Rio de Janeiro, RJ (Brazil); 284 p; 1990; p. 214; 13. National Meeting on Condensed Matter Physics; Caxambu, MG (Brazil); 8-12 May 1990; Available from the Library of Comissao Nacional de Energia Nuclear, RJ, Brazil
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AbstractAbstract
[en] In this letter, we describe a unique method of producing hyperthermal neutrals for material processing. The hyperthermal neutrals are produced by accelerating ions across a sheath from a plasma onto a surface. On impact, the ions are neutralized and reflected with ∼50% of their incident energy. These neutrals then bounce off of additional surfaces prior to impacting the target. This unique multiple bounce system was developed for the following reasons: to reduce contamination from sputtered surface material, improve beam uniformity, and reduce UV radiation in the beam path. As a test of this method, we built a prototype beam source and used it to ash photoresist at rates up to 0.022 μm/min. These rates are consistent with a predicted neutral beam flux, 2x1014cm-2s-1. In addition, a simple model is used to indicate that this method is capable of producing economically acceptable ash rates. Comparisons with other neutral-beam production methods are made. copyright 1997 American Institute of Physics
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