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  • Author or Editor: M. Stamouli x
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Abstract  

The effect of pressure on neutron irradiated potassium chromate and potassium dichromate has been studied. The retention was found to increase with pressure in both salts, mainly at the expense of DP precursors. Thermal annealing studies in samples which prior to heating had been compressed were also made.

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Abstract  

The effect of thermal treatment, in air and in vacuum, on51Cr(III)-doped potassium chromate and on post-irradiation-recrystallized potassium chromate has been studied. The51Cr(VI) yield was found to increase and the M yield to decrease in all samples, while the DP yield remained constant up to 180 °C and decreased at higher temperatures. The results were not affected by the presence of oxygen.

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Abstract  

The effect of pressure on neutron irradiated ammonium chromate and ammonium dichromate has been studied. Compression was found to have no effect on the retention and on the M and DP yields in both salts. Pressure applied before heating was found to retard annealing in ammonium chromate, while it appeared to have no influence on the annealing of ammonium dichromate.

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Abstract  

The effect of pressure on the annealing of recoil atoms by gamma radiation in neutron irradiated potassium chromate, ammonium chromate and ammonium dichromate has been studied. In potassium chromate pressure applied before the gamma-irradiation was found to retard the radiation annealing process. In ammonium chromate and ammonium dichromate the radiation annealing was found to be enhanced in the compressed samples in comparison to the noncopmressed ones.

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Abstract  

The effect of compression on51Cr/III/-doped potassium chromate, pre-irradiated, or not, with -radiation, has been studied. Compression appeared to have no effect on the initial51Cr/VI/ yield, while it was found to retard considerably the transfer annealing process.

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