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Type: Artigo de periódico
Title: Radiolysis Of Potassium Chromate. Effect Of Oxygen On Radiolytic Production Of 51cr(iii) From K2 51cro4
Author: Collins K.E.
Collins C.H.
Yang M.H.
Chuang J.T.
Wei J.C.
Yeh S.J.
Abstract: The radiolytic yield of 51Cr(III) from K2 51CrO4 irradiated in a 60Co field has been determined as a function of temperature of irradiation, of covering gas atmosphere and of sample treatment prior to irradiation. These yields are highest at intermediate temperatures (0°>20°> - 78°>100°C) and in the absence of oxygen (N2>vacuum>air>O2). Pre-heating of the samples under the corresponding atmospheres for 4 h at 350°C emphasizes these differences. The results are consistent with a model which includes the radiolytic production of a Cr(III)-precursor, with the observed yield of 51Cr(III) modified by a radiation annealing process which is more effective in the presence of an oxygen atmosphere and at higher irradiation temperatures. © 1978.
Rights: fechado
Identifier DOI: 10.1016/0146-5724(78)90004-3
Date Issue: 1978
Appears in Collections:Unicamp - Artigos e Outros Documentos

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