Abstract
IN a letter to NATURE (September 22, 1923, p. 435) Messrs. L. F. Bates and J. S. Rogers suggest that the particles found by G. Kirsch and H. Pettersson (NATURE, September 15, 1923, p. 394) to be expelled from lithium, magnesium, and silicon under bombardment with particles from radium C are really long-range particles from the source itself, which the authors first named claim to have found. In their reply (NATURE, November 10, 1923, p. 687) Kirsch and Pettersson point out that the very considerable difference in brightness between scintillations from H- and from particles make such a mistake improbable. This raises the question of the relative brightness of scintillations from particles of different kinds, which does not as yet seem to have been made the subject of direct measurements.
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KARA-MICHAILOVA, E., PETTERSSON, H. The Brightness of Scintillations from H-particles and from α-particles. Nature 113, 715 (1924). https://doi.org/10.1038/113715a0
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DOI: https://doi.org/10.1038/113715a0
