Feasibility of Using Conversion Electron Mossbauer Spectroscopy for Characterization of Surfaces and Thin Films,
Abstract
Experimental techniques for the study of surfaces and thin films by the use of Mossbauer spectroscopy requires a detector that can isolate internal conversion electrons with energies of 7.3-keV or less. In addition, if the detector could 'energy-discriminate' the electrons, changes occurring in a thin film, as the interface between the film and substrate is approached, could be observed. An electrostatic detector, employing parallel deflector plates and a channeltron electron multiplier, was designed and constructed for the purpose of obtaining Mossbauer spectra by detecting specific-energy electrons. Although the detector was capable of detecting the 7.3-keV, 5.6-keV, and 0.53-keV electrons emitted in the decay of a Co57 point source, attempts to obtain Mossbauer spectra were unsuccessful. A flowing-gas proportional counter, designed to detect internal conversion electrons, was used to obtain several Mossbauer spectra. Absorbers used for these spectra are discussed. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1973
- Accession Number
- AD0767219
Entities
People
- Donald Gale Allen
Organizations
- Air Force Institute of Technology