Theory of RBE. Progress report, January 1, 1977--December 1977. [X Radiation, Electrons, Neutrons, Gamma Radiation] Metadata

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Title

  • Main Title Theory of RBE. Progress report, January 1, 1977--December 1977. [X Radiation, Electrons, Neutrons, Gamma Radiation]

Creator

  • Author: Katz, R.
    Creator Type: Personal

Publisher

  • Name: University of Nebraska--Lincoln
    Place of Publication: Lincoln, Nebraska
    Additional Info: University of Nebraska--Lincoln, Lincoln, NE (United States)

Date

  • Creation: 1977-09-01

Language

  • English

Description

  • Content Description: Emulsion-processing combinations have been found which match the response of mammalian cells to x-rays. The grain size of these emulsions is in the implied range of sensitive element sizes in biological cells. The fading of the latent image may parallel biological repair. In consequence studies are under way of the variation in emulsion response to low LET radiations of different quality, of ''Elkind repair'', and of dose fractionation. Predictions of OER and RBE of mammalian cells to high LET radiations, from track structure theory, have been verified, once again, in Bevalac experiments. Experiment has now shown that high temperature traps in LiF respond favorably to neutrons, while low temperature traps respond favorably to gamma-rays. This result is consistent with our identification of supralinear high temperature traps as from an unidentified 2-hit trap structure. In collaboration with Oak Ridge colleagues, Monte-Carlo studies of the electron slowing down spectra of source electrons from 1 keV to 1 MeV in liquid water are being integrated into the theory of RBE. The yield of several different ions is nearly independent of the initial energy of source electrons. The results raise questions as to the physical basis for biological observations of RBE differences for x- and gamma-rays.
  • Physical Description: 8 pages

Subject

  • Keyword: Charged Particles
  • Keyword: Oxygen Enhancement Ratio
  • Keyword: Dispersions
  • Keyword: Gamma Radiation
  • Keyword: Let
  • Keyword: Electromagnetic Radiation
  • Keyword: Baryons
  • Keyword: Leptons
  • Keyword: Spectra
  • Keyword: Radiation Effects
  • Keyword: Animal Cells
  • Keyword: Hadrons
  • Keyword: Electrons
  • Keyword: Radiations 560121* -- Radiation Effects On Cells-- External Source-- (-1987)
  • Keyword: Nucleons
  • STI Subject Categories: 63 Radiation, Thermal, And Other Environ. Pollutant Effects On Living Orgs. And Biol. Mat.
  • Keyword: Biological Effects
  • Keyword: Ions
  • Keyword: Biological Radiation Effects
  • Keyword: Elementary Particles
  • Keyword: Ionizing Radiations
  • Keyword: Neutrons
  • Keyword: Energy Transfer
  • Keyword: Rbe
  • Keyword: Colloids
  • Keyword: X Radiation
  • Keyword: Fermions
  • Keyword: Emulsions

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: COO-1671-73
  • Grant Number: EY-76-S-02-1671
  • DOI: 10.2172/7083224
  • Office of Scientific & Technical Information Report Number: 7083224
  • Archival Resource Key: ark:/67531/metadc1411456

Note

  • Display Note: Dep. NTIS, PC A02/MF A01.
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