Date of Award
6-1968
Degree Name
Master of Arts
Department
Physics
First Advisor
Dr. L. D. Oppliger
Second Advisor
Dr. J. P. Dewitt
Access Setting
Masters Thesis-Open Access
Recommended Citation
Smith, Richard L., "Mössabauer Studies of Impurity Tin Atoms in Indium" (1968). Masters Theses. 4279.
https://scholarworks.wmich.edu/masters_theses/4279
Comments
Introduction
The Mössabauer effect may be used as a very sensitive form of high resolution spectroscopy, using low energy gamma-rays. Since its first observation in 1958, the Mössabauer effect has shown promise of becoming a useful tool in solid state physics and chemistry. In the present experiment Sn119m in the chemical form of Sn02 was used to study the spectra of several binary alloys of tin and indium. The concentration of tin was varied from 1.3% to 100% by weight.
Interest in indium was generated by discussions with Dr. John H. Kusmiss whose study of positron annihilation in indium shows anomalous features at temperatures approaching the melting point. Since indium has no isotope which exhibits the Mössabauer effect, it was decided to use Sn119 as a probe to see if any additional information about indium could be obtained using the Mössabauer effect. This proved impossible because the intensity of the spectrum resonance became too small to observe above room temperature. However, a marked dependence of isomer shift on tin concentration was noted and this is the study reported here.