Abstract
L. Wertenstein was investigating the radioactive gases evolved in the fission of uranium at the Miroslaw Kernbaum Radiological Laboratory of the Warsaw Society of Sciences when Poland was invaded. Writing from Turczynck, near Warsaw, he describes some of the results he had obtained. The radioactive gases were carried through two Geiger-Miiller counters placed in series and the time lag of arrival of the gases in the counters could be varied by a system of capillary tubes. Typical curves indicate bodies of period of the order of a minute, and others of much longer period, giving almost constant residual activity within the time of experiment.
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Points from Foregoing Letters. Nature 144, 1051 (1939). https://doi.org/10.1038/1441051a0
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DOI: https://doi.org/10.1038/1441051a0