University of Illinois - Urbana-Champaign
Low temperature electron irradiation and annealing of pure cadmium
Abstract
dc:description"In this study of cadmium after electron irradiation below 2°K, it has been observed that the damage production rate in Cd is (4.13 ± .16) x -26 / -2 ° 10 stcm (e /cm ) for irradiation with 2.5 MeV electrons at 1.5 K. New annealing peaks are observed at 1.825°K and at about 2°K with activation energies of (2.6 ± .1) x 10-3 eV and (2.77 ± .34) x 10-3 eV, respectively. The peak at about 2°K exhibits dose-dependence, but it is better described by first order kinetics; this peak is believed to correspond to the long- range migration of the self-interstitial, preferentially to impurities where they form clusters. It has been found that subthreshold irradiation results in the annealing of damage already present. This radiation annealing effect may be a contributing factor to the ""seesaw effect."" Another physical process may contribute to the ""seesaw effect,"" namely, the trapping of interstitials at impurities and their subsequent detrapping during annealing."
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Physics
- Year dc:date
- 2011
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Menendez, Maria Antonia
- Contributors dc:contributor
-
- Koehler, James S.
Subjects
dc:subject × 5Rights
dc:rights- Statement dc:rights
-
- 1979 Maria Antonia Menendez
- Language dc:language
- en
Identifiers
dc:identifier.*- Identifier
- 397546
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/25555