The Ice Nucleating Properties of an Ultrafine Aerosol of Pure Silver Iodide

Marie-Martine Poc Laboratoire de Météorologie, Université Scientifique, Paris VI

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Maud Roulleau Laboratoire de Météorologie, Université Scientifique, Paris VI

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Abstract

A silver iodide aerosol was prepared under clean conditions. The method was to react iodine vapor with a silver aerosol in an inert dry atmosphere and in darkness. Great care was taken to avoid contamination from atmosphere air.

The ice nucleating properties of the ultrafine AgI aerosol obtained were studied in a cloud mixing chamber: the aerosol was found to be strangely inactive. For temperatures higher than −20 C.

Abstract

A silver iodide aerosol was prepared under clean conditions. The method was to react iodine vapor with a silver aerosol in an inert dry atmosphere and in darkness. Great care was taken to avoid contamination from atmosphere air.

The ice nucleating properties of the ultrafine AgI aerosol obtained were studied in a cloud mixing chamber: the aerosol was found to be strangely inactive. For temperatures higher than −20 C.

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