University of Illinois Urbana-Champaign

Low temperature electron irradiation and annealing of pure cadmium

Menendez, Maria Antonia

This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.

Permalink

https://hdl.handle.net/2142/25555

Description

Title
Low temperature electron irradiation and annealing of pure cadmium
Author(s)
Menendez, Maria Antonia
Issue Date
1979
Doctoral Committee Chair(s)
Koehler, James S.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
  • electron irradiation
  • annealing
  • pure cadmium
  • activation energies
  • kinetics
Language
en
Abstract
"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."
Type of Resource
text
Permalink
http://hdl.handle.net/2142/25555
Copyright and License Information
1979 Maria Antonia Menendez

Owning Collections

Dissertations and Theses - Physics
Dissertations in Physics
Graduate Dissertations and Theses at Illinois PRIMARY
Graduate Theses and Dissertations at Illinois