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1995 (1)
1992 (1)
1Author    G. B. Furman, I. M. Kadzhaya, G. E. Kibrik, A. Yu, I. G. Poljakov, ShaposhnikovRequires cookie*
 Title    NQR Spin Echo in the Effective Fields of Multiple-Pulse Sequences  
 Abstract    Results of a study, both theoretical and experimental, of a new kind of NQR spin echo technique are reported and discussed. 
  Reference    Z. Naturforsch. 47a, 409—411 (1992); received November 21 1991 
  Published    1992 
  Keywords    NQR, Spin echo, Multiple-pulse sequence 
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 TEI-XML for    default:Reihe_A/47/ZNA-1992-47a-0409.pdf 
 Identifier    ZNA-1992-47a-0409 
 Volume    47 
2Author    P. Hartmann, G. SchelerRequires cookie*
 Abstract    Herrn Prof. W . Müller-Warmuth zum 65. Geburtstag gewidmet Is solid state 91 Zr NMR feasible? 91Zr solid state NMR spectra have been observed for samples possessing different zirconium local-site environments (e.g. phosphates, fluorides). Depending on the quadrupole coupling, different NMR experiments have been utilized. In case of weak quadrupole coupling, magic angle spinning (MAS) is suitable. Otherwise, spin echo techniques are necessary to overcome "acoustic ringing" and receiver dead-time limitations. Using the step echo method, the detection of the very broad 91Zr signals is not limited by non-uniform spectral excitation. The obtained 91Zr chemical shifts range from —246 ppm to 208 ppm, the quadrupole coupling frequencies from 50 kHz to 2.7 MHz.. I s t 91Z r -F e s tk ö r p e r -K e r n r e s o n a n z s p e k tr o s k o p ie p r a k tik a b e l? 
  Reference    Z. Naturforsch. 50a, 90—94 (1995); received September 26 1994 
  Published    1995 
  Keywords    Solid state NMR, Zirconium-91, MAS, Spin echo, Acoustic ringing 
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 TEI-XML for    default:Reihe_A/50/ZNA-1995-50a-0090.pdf 
 Identifier    ZNA-1995-50a-0090 
 Volume    50