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Drevenak, R.; Finger, M.; Janata, A.
Experiments in Laboratory of Nuclear Problems of Joint Institute for Nuclear Research in 1994-19951994
Experiments in Laboratory of Nuclear Problems of Joint Institute for Nuclear Research in 1994-19951994
AbstractAbstract
[en] Short communication
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Bednyakov, V.A.; Joint Inst. for Nuclear Research, Dubna (Russian Federation); 105 p; 1994; p. 32-36
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No abstract available
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Sociedade Brasileira de Fisica, Sao Paulo, SP (Brazil); [vp.]; 2008; 1 p; 31. Brazilian national meeting on condensed matter physics; 31. Encontro nacional de fisica da materia condensada; Aguas de Lindoia, SP (Brazil); 5-9 May 2008; Available from http://www.sbf1.sbfisica.org.br/eventos/enfmc/xxxi/sys/resumos/R1322-1.pdf; Code: 1322-1
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[en] Nuclear spin polarization of the residual ion formed from an alkali atom after its resonant two-photon two-ligth beam ionization via hyperfine structure energy states is calculated ein second-order time-dependent perturbation approach fr atomlight interaction and taking itno account all photoionization channels permitted inthe electric-dipole appoxiamtion. (orig.)
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Journal Article
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Optics Communications; ISSN 0030-4018;
; v. 34(3); p. 361-366

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[en] We prospectively evaluated the feasibility and technical features of MR-guided lumbosacral injection procedures in open high-field MRI at 1.0 T. In a CuSO4.5H2O phantom and five human cadaveric spines, fluoroscopy sequences (proton-density-weighted turbo spin-echo (PDw TSE), T1w TSE, T2w TSE; balanced steady-state free precession (bSSFP), T1w gradient echo (GE), T2w GE) were evaluated using two MRI-compatible 20-G Chiba-type needles. Artefacts were analysed by varying needle orientation to B0, frequency-encoding direction and slice orientation. Image quality was described using the contrast-to-noise ratio (CNR). Subsequently, a total of 183 MR-guided nerve root (107), facet (53) and sacroiliac joint (23) injections were performed in 53 patients. In vitro, PDw TSE sequence yielded the best needle-tissue contrasts (CNR = 45, 18, 15, 9, and 8 for needle vs. fat, muscle, root, bone and sclerosis, respectively) and optimal artefact sizes (width and tip shift less than 5 mm). In vivo, PDw TSE sequence was sufficient in all cases. The acquisition time of 2 s facilitated near-real-time MRI guidance. Drug delivery was technically successful in 100% (107/107), 87% (46/53) and 87% (20/23) of nerve root, facet and sacroiliac joint injections, respectively. No major complications occurred. The mean procedure time was 29 min (range 19-67 min). MR-guided spinal injections in open high-field MRI are feasible and accurate using fast TSE sequence designs. (orig.)
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Source
Available from: http://dx.doi.org/10.1007/s00330-009-1567-3
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Journal Article
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Jarboe, D.M.; Lacey, D.E.
Bendix Corp., Kansas City, MO (USA)1978
Bendix Corp., Kansas City, MO (USA)1978
AbstractAbstract
[en] Crystal orientation in a polycrystalline material determines the characteristics of the material. When a material is deformed, a specific crystallographic orientation of the grains with respect to the deformation direction becomes predominant. A technique used to determine crystal orientation or texture is the construction of a pole figure. A pole figure is a contour map, in stereographic projection, of the concentration of poles of selected crystallographic planes as a function of spatial orientation. The data used to produce pole figures are obtained by X-ray diffraction techniques. The techniques are complicated and can be simplified using computerized data acquisition, reduction, and CRT display techniques. Pole figures of cold-rolled cartridge brass (70Cu--30Zn) taken from published literature were found to closely compare with results achieved at Bendix Kansas City
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Sep 1978; 57 p; Available from NTIS., PC A04/MF A01
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Report
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Progress Report
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AbstractAbstract
No abstract available
Original Title
Polyarizatsiya i vystroennost' oskolkov deleniya
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Source
AN SSSR, Moscow; Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Moscow; AN Azerbajdzhanskoj SSR, Baku; Ministerstvo Vysshego i Srednego Spetsial'nogo Obrazovaniya Azerbajdzhanskoj SSR, Baku; Azerbajdzhanskij Gosudarstvennyj Univ., Baku (USSR); p. 451; 1988; p. 451; 38. All-union conference on nuclear spectroscopy and nuclear structure; Baku (USSR); 12-14 Apr 1988; Short note.
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[en] The recent interest in using polarized fuels in controlled fusion is reviewed. The salient consequences of spin polarized fusion are the possibility of increased reactivity and control of the direction of the fusion products. Possible depolarization mechanisms in plasma devices are examined and shown to be small compared to the fusion burn rate. The several possible techniques for development of large polarized sources capable of producing polarized atoms at a rate greater than 1020 sec-1 are examined. (author)
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6. international symposium on polarization phenomena in nuclear physics; Osaka (Japan); 26-30 Aug 1985
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[en] Nuclear spin maser based on a new masing mechanism is proposed, which is applicable to high-precision measurements of the electric dipole moment of neutron. To test this idea, a spin maser with a spin-polarized 129Xe gas as a working substance was constructed. After a detailed investigation of the spin maser operation in an ordinary spin-masing mechanism, we introduced an additional component in the feedback loop of the maser in order to implement the proposed masing mechanism. A self-sustained oscillation of transverse spins has been observed which clearly indicates a realization of spin masing arising from the new masing mechanism. (author)
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International workshop 'Symmetry and spin'; Prague (Czech Republic); 5-12 Sep 1999; 4 figs., 9 refs.
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Journal Article
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Conference
Journal
Czechoslovak Journal of Physics; ISSN 0011-4626;
; v. 50(suppl.S1,pt.1); p. 179-186

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BARYONS, DAYS LIVING RADIOISOTOPES, DIPOLE MOMENTS, ELECTRIC MOMENTS, ELEMENTARY PARTICLES, EVEN-ODD NUCLEI, FERMIONS, HADRONS, INTERMEDIATE MASS NUCLEI, INTERNAL CONVERSION RADIOISOTOPES, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, NUCLEI, NUCLEONS, ORIENTATION, RADIOISOTOPES, STABLE ISOTOPES, XENON ISOTOPES
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Zaretskij, D.F.; Karpeshin, F.F.
Summaries of reports of 32. Conference on nuclear spectroscopy and nuclear structure1982
Summaries of reports of 32. Conference on nuclear spectroscopy and nuclear structure1982
AbstractAbstract
No abstract available
Original Title
Polyarizatsiya yader v myu-mezoatomakh
Primary Subject
Source
AN SSSR, Moscow; Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Moscow; AN Ukrainskoj SSR, Kiev. Inst. Yadernykh Issledovanij; p. 159; 1982; p. 159; 32. Conference on nuclear spectroscopy and nuclear structure; Kiev, Ukrainian SSR; 16 - 18 Mar 1982; Short note.
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[en] The theory of preferred orientation determination (crystallographic- or spintexture) by Moessbauer effect is presented for the case of unpolarized and polarized source radiation. The maximum information one can get out from Moessbauer measurements for the case of dipole radiation (M1) are nine expansion coefficients of the texture distribution expanded in a series of spherical harmonics. These coefficients can be obtained by a fitting procedure of the experimentally determined line intensity ratios in an absoption spectrum with rotated source and absorber. The general theory is applied for M1 radiation (Fe57) and the cases of pure Zeeman or quadrupole splitting of source and absorber. Extension to higher multipole radiation can be easily done. Some graphs of possible textures are shown. (orig.)
[de]
Die Theorie der Bestimmung der bevorzugten Orientierung (kristallographische oder Spin-Struktur) mit Hilfe des Moessbauereffekts wird fuer den Fall polarisierter und unpolarisierter Quellenstrahlung angegeben. Die maximale Information, die sich aus Moessbauermessungen mit Dipolstrahlung (M1) ergibt, besteht in 9 Koeffizienten einer Entwicklung der Strukturverteilung nach sphaerischen Kugelfunktionen. Diese Koeffizienten koennen aus einer Anpassung der experimentell bestimmten Linienintensitaetsverhaeltnisse eines Absorptionsspektrums mit rotierender Quelle und rotierendem Absorber gewonnen werden. Die allgemeine Theorie wird auf M1-Strahlung (Fe57) und den Fall reiner Zeeman- oder Quadrupolaufspaltung von Quelle und Absorber angewandt. Die Theorie laesst sich in einfacher Weise auf Strahlung hoeherer Multipolaritaet erweitern. Einige Graphen moeglicher Texturen werden angegeben. (orig.)Source
3 figs.; 4 tabs.; 12 refs.
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Journal Article
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Applied Physics; v. 13(4); p. 317-325
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