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1994 (1)
1Author    O. Tte R, K. K., Ze Lm, G. M., Je Rb, A. SeegeraRequires cookie*
 Title    Investigation of Intrinsic Point Defects in Metals by Nuclear Quadrupole Double Resonance  
 Abstract    The paper reviews the principal features of the Nuclear Q uadrupole D ouble Resonance (N Q D O R) technique, with particular emphasis on its application to the investigation o f imperfec­ tions in cubic metals. N Q D O R permits measurements o f the electric field gradients (EFG) at quadrupole-m oment-carrying nuclei in the neighbourhood of point defects and thus to obtain "fingerprints" of these defects. An N Q D O R facility set-up at the M ax-Planck-Institut für M etall­ forschung in Stuttgart is described. It has been used to study the intrinsic defects introduced into Cu and dilute Cu/Be alloys by low-temperature irradiation with electrons or protons or by cold-work. It is shown that all well-resolved irradiation-induced EFG observed in the present work are due to one kind o f defect only, which is identified as the <100) dumbbell self-interstitial. When considered together with measurements of the electrical resistivity on the same specimens, the annealing be­ haviour of the N Q D O R lines supports the so-called two-interstitial model o f radiation damage in face-centred cubic metals rather than the one-interstitial model. 
  Reference    Z. Naturforsch. 49a, 47 (1994); received October 26 1993 
  Published    1994 
  Keywords    Nuclear quadrupole double resonance, Self-interstitials, Vacancies, Radiation dam ­ age, Intrinsic point defects in copper 
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 TEI-XML for    default:Reihe_A/49/ZNA-1994-49a-0047.pdf 
 Identifier    ZNA-1994-49a-0047 
 Volume    49