Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Microdosimetric Distributions for Nanometer-Size Targets in Water Irradiated with 60 Co Gamma Rays: Frequency Distributions of Effective Primary Events by Individual Tracks of Electrons

Nobuo Oda and Shigeru Iwanami
Radiation Research
Vol. 98, No. 1 (Apr., 1984), pp. 1-13
DOI: 10.2307/3576046
Stable URL: http://www.jstor.org/stable/3576046
Page Count: 13
  • Read Online (Free)
  • Download ($10.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Microdosimetric Distributions for Nanometer-Size Targets in Water Irradiated with 60 Co Gamma Rays: Frequency Distributions of Effective Primary Events by Individual Tracks of Electrons
Preview not available

Abstract

A calculation method of frequency distributions for the microdosimetric quantity j (number of effective primary events per track per target), fj, is presented. fj distributions are calculated for nanometer-size targets in water irradiated with 60 Co γ rays, using degradation spectra of total electrons in water, $\phi _{{\rm t}}(E)$. Further, fractional total electron differential fluences effective to produce j effective primary events, $\phi _{{\rm t}}(E,j)$, are calculated. It is found that the frequency for occurrence of no effective primary event tracks (tracks traversing the target without any effective primary event inside the target) is very large for nanometer-size targets, and that the δ-ray effect on the fj distribution becomes more significant with the decrease of the target size and especially j effective primary events (j ≥ 1) for very small targets are due mostly to δ rays.

Page Thumbnails

  • Thumbnail: Page 
1
    1
  • Thumbnail: Page 
2
    2
  • Thumbnail: Page 
3
    3
  • Thumbnail: Page 
4
    4
  • Thumbnail: Page 
5
    5
  • Thumbnail: Page 
6
    6
  • Thumbnail: Page 
7
    7
  • Thumbnail: Page 
8
    8
  • Thumbnail: Page 
9
    9
  • Thumbnail: Page 
10
    10
  • Thumbnail: Page 
11
    11
  • Thumbnail: Page 
12
    12
  • Thumbnail: Page 
13
    13