Summary
A study has been made of theK Auger transitions in the light elements of nuclear emulsions. Of 382 stopping μ−-mesons, 1016 were observed to decay. 5 of these had associated short-range electrons whose energies were consistent with theK transitions of CNO. 2 of these 5 are attributed to theK Auger transitions of CNO, while the remaining 3 are attributed to higher Auger transitions in AgBr. These results are to be compared with the calculations of Burbidge and de Borde which predict 1.3K Auger electrons from CNO for this experiment. These experimental results are inconsistent with the assumption that the missingK radiative transitions in the experiment of Stearns and Stearns are due to competing Auger processes, since this would require 294 observedK electrons as compared to the 2 actually observed. The experimental results quoted here are in agreement with an earlier experiment of Fry.
Riassunto
Si è effettuato uno studio delle transizioniK di Auger negli elementi leggeri delle emulsioni nucleari. Su 3 382 mesoni μ− che si arrestano, se ne osservano 1016 che decadono. 5 di questi sono associati a elettroni a breve percorso le cui energie erano in accordo con le transizioniK del CNO. 2 di queste 5 vengono attribuite a transizioniK di Auger del CNO, mentre le rimanenti 3 sono attribuite a transizioniK di Auger nell’AgBr. Questi risultati vanno confrontati con i calcoli di Burbidge e de Borde che per questo esperimento predicono 1.3 elettroniK di Auger formati nel CNO. Questi risultati sperimentali sono in contrapposto con l’ipotesi che le transizioniK radiative mancanti negli esperimenti di Stearns e Stearns siano dovute a contrastanti processi di Auger, poichè questa ipotesi richiederebbe che si osservassero 294 elettroniK invece dei 2 effettivamente osservati. I risultati sperimentali qui esposti sono in accordo con un experimento precedente di Fry.
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This research was supported in part by the Office of Scientific Research, A.R.D.C. of the United States Air Force.
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Pevsner, A., Strand, R., Madansky, L. et al. Auger rate in μ-mesic atoms. Nuovo Cim 19, 409–414 (1961). https://doi.org/10.1007/BF02733241
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DOI: https://doi.org/10.1007/BF02733241