Photonuclear and radiation effects testing with a refurbished 20 MeV medical electron linac

Paper


Webb, T., Beezhold, W., DeVeaux, L. C., Harmon, F., Petrisko, Jill E., Spaulding, R. and Assink, R.. 2005. "Photonuclear and radiation effects testing with a refurbished 20 MeV medical electron linac." 2005 Particle Accelerator Conference (PAC05). Knoxville, United States of America 16 - 20 May 2005
Paper/Presentation Title

Photonuclear and radiation effects testing with a refurbished 20 MeV medical electron linac

Presentation TypePaper
AuthorsWebb, T. (Author), Beezhold, W. (Author), DeVeaux, L. C. (Author), Harmon, F. (Author), Petrisko, Jill E. (Author), Spaulding, R. (Author) and Assink, R. (Author)
Journal or Proceedings TitleProceedings of the 2005 Particle Accelerator Conference (PAC05)
Number of Pages3
Year2005
ISBN0780388593
Web Address (URL) of Paperhttp://accelconf.web.cern.ch/AccelConf/p05/
Conference/Event2005 Particle Accelerator Conference (PAC05)
Event Details
2005 Particle Accelerator Conference (PAC05)
Event Date
16 to end of 20 May 2005
Event Location
Knoxville, United States of America
Abstract

An S-band 20 MeV electron linear accelerator formerly used for medical applications has been recommissioned to provide a wide range of photonuclear activation studies as well as various radiation effects on biological and microelectronic systems. Four radiation effect applications involving the electron/photon beams are described. Photonuclear activation of a stable isotope of oxygen provides an active means of characterizing polymer degradation. Biological irradiations of microorganisms including bacteria were used to study total dose and dose-rate effects on survivability and the adaptation of these organisms to repeated exposures. Microelectronic devices including bipolar junction transistors (BJTs) and diodes were irradiated to study photocurrent from these devices as a function of peak dose rate with comparisons to computer modeling results. In addition, the 20 MeV linac may easily be converted to a medium energy neutron source which has been used to study neutron damage effects on transistors.

Keywordsbacteria; irradiation; isotopes; medical applications; microelectronics; radiation effects; photonuclear activation; polymer degradation
ANZSRC Field of Research 2020310799. Microbiology not elsewhere classified
Public Notes

© 2005 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Byline AffiliationsIdaho State University, United States
Sandia National Laboratories, United States
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