Determination of Unique Site Population in Various in Implanted Non-Cubic Metals Using Angular Correlations and the Nuclear Electric Quadrupole Interaction
As part of an investigation of the electric quadrupole interaction (EQI) at impurity nuclei in non-cubic metals1, we have applied the time-differential perturbed-angular correlation (TDPAC) technique2 to the measurement of the EQI at a 111Cd impurity in several hosts. Since in most of the cases studied the 111In parent radioactivity is difficult to introduce in the host lattice by metallurgical means, we prepared all sources by implantation of the 111In activity. As a by-product of the investigation, therefore, we obtained information on the efficiency of the implantation process in providing dilute alloy systems with a large fraction of In impurity atoms at lattice sites which appear unique insofar as the EQI is concerned. This definition of uniqueness implies not only that the impurity site be a specific crystallographic position but also that it sees identical surroundings in the first few shells of neighbors.
KeywordsZinc Titanium Anisotropy Zirconium Attenuation
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- 1.P. Raghavan, R. S. Raghavan, E. N. Kaufmann, K. Krien and R. A. Naumann, Bull. Am. Phys. Soc. l8, 134 (1973) and to be published.Google Scholar
- 2.H. Frauenfelder and R. M. Steffen in “Alpha-, Beta- and Gamma-Ray Spectroscopy” ed. by K. Siegbahn (North Holland, 1965) 997.Google Scholar
- 3.C.M. Lederer et al., “Table of Isotopes” (John Wiley & Sons, 1968, New York).Google Scholar
- 4.P. C. Lopiparo and R. L. Rasera in “Angular Correlations in Nuclear Disintegration” ed. by H. van Krugten and B. van Nooijen (Rotterdam Univ. Press, 1971, Netherlands) p. 66.Google Scholar
- 5.See for example E. Gerdau et al., Proc. Roy. Soc. A311, 197 (1965).Google Scholar
- 8.C. Budtz-Jorg ensen (private communication, 1973).Google Scholar
- 10.K. Krien (private communication, 1973).Google Scholar