Published 1986 | Version v1
Miscellaneous Metadata-only

Determination of gamma (60Co) radiation fields with dosimetric films and ionization chamber

Creators

  • 1. Instituto de Pesquisas Energeticas e Nucleares, Sao Paulo (Brazil)

Description

The radiation fields of two 60Co sources have been determined by utilizing dosimetric films. The same study has been done with ionization chambers in air and inside a lucite phantom by varying its position every 1 cm, making its positioning in the radiation beam easier. Relative values of exposure rate have been obtained for each source at a certain source to detector distance, at the radiation beam center and in the horizontal and vertical directions in a plane perpendicular to the beam. The results have shown that the uniformity is greater than 90% for a 10 x 10 cm2 field size. These values are within acceptable limits. (Author)

Abstract (Portuguese)

Foram determinados os campos de radiacao de duas fontes de 60Co utilizando-se filmes dosimetricos. O mesmo estudo foi feito com camaras de ionizacao no ar e utilizando-se um fantoma de lucite, variando-se sua posicao de 1 em 1 cm, o que facilitou o seu posicionamento no feixe de radiacao. Foram obtidos valores relativos da taxa de exposicao para cada fonte a uma certa distancia entre fonte e detector, no centro do feixe de radiacao e nas direcoes horizontal e vertical num plano perpendicular ao feixe. Os resultados mostraram que a uniformidade e maior do que 90% para um campo de 10 x 10 cm2. Estes valores estao dentro dos limites aceitaveis. (Autor)

Additional details

Additional titles

Original title (Portuguese)
Determinacao dos campos de radiacao gama (

Publishing Information

Imprint Title
Proceedings of the 1. General Congress of Nuclear Energy. v. 2
Imprint Pagination
443 p.
Journal Page Range
v. 2 p. 317-320.
Report number
INIS-BR--537(v.2)

Conference

Title
1. General Congress of Nuclear Energy.
Dates
17-20 Mar 1986.
Place
Rio de Janeiro, RJ (Brazil).

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
17069929
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
COBALT 60; EXPERIMENTAL DATA; FILM DOSIMETRY; GAMMA RADIATION; GAMMA SOURCES; IONIZATION CHAMBERS; LUCITE; MEASURING METHODS; PHANTOMS; SPATIAL DOSE DISTRIBUTIONS
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; COBALT ISOTOPES; DATA; DISTRIBUTION; DOSIMETRY; ELECTROMAGNETIC RADIATION; ESTERS; INFORMATION; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MEASURING INSTRUMENTS; MINUTES LIVING RADIOISOTOPES; MOCKUP; NUCLEI; NUMERICAL DATA; ODD-ODD NUCLEI; ORGANIC COMPOUNDS; ORGANIC POLYMERS; POLYACRYLATES; POLYMERS; POLYVINYLS; RADIATION DETECTORS; RADIATION DOSE DISTRIBUTIONS; RADIATION SOURCES; RADIATIONS; RADIOISOTOPES; SPATIAL DISTRIBUTION; STRUCTURAL MODELS; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
Imprint:Anais do 1. Congresso Geral de Energia Nuclear. v. 2.