Published 1996 | Version v1
Miscellaneous Metadata-only

Electron spin resonance (ESR) of gamma-irradiated oyster shells

Creators

  • 1. Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)
  • 2. Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil)

Description

Nonirradiated and gamma-irradiated mollusc shells were studied by EPR. Four paramagnetic species ascribed to CO2 and SO3 radicals were identified in the EPR spectra. Three paramagnetic centers are attributed to CO2 ions of isotropic (g= 2.0007) and orthorhombic symmetries and the fourth species are associated with axially symmetric SO3 radicals (g=2.0036, g = 2.0021). These radicals are present in the EPR spectra of nonirradiated samples suggesting that they can also be created by sample mechanical treatment. As a consequence, SO3 and CO2 centers can be used in high dose EPR dosimetry with precautions. (author)

Availability note (English)

Available from the library of the Brazilian Nuclear Energy Commission, Rio de Janeiro

Additional details

Publishing Information

Imprint Pagination
4 p.

Conference

Title
6. General congress on nuclear energy
Original Conference Title
6. Congresso geral de energia nuclear
Dates
27 Oct - 1 Nov 1996
Place
Rio de Janeiro, RJ (Brazil)

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
31045025
Subject category
S63: RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
COBALT 60; DOSE RATES; DOSE-RESPONSE RELATIONSHIPS; DOSIMETRY; ELECTRON SPIN RESONANCE; GAMMA RADIATION; OYSTERS; RADIATION DOSES; SENSITIVITY
Descriptors DEC
ANIMALS; AQUATIC ORGANISMS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; COBALT ISOTOPES; DOSES; ELECTROMAGNETIC RADIATION; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; INVERTEBRATES; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MAGNETIC RESONANCE; MINUTES LIVING RADIOISOTOPES; MOLLUSCS; NUCLEI; ODD-ODD NUCLEI; RADIATIONS; RADIOISOTOPES; RESONANCE; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
13 refs., 2 figs.; mmcattani@if.usp.br; delson@cbpfsu1.cat.cbpf.br