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Gamma ray spectra of some lavas from Vesuvius

  • Ière Partie Communications Présentées À La XIIIème Assemblée Générale Berkeley, Aoùt 1963
  • Published:
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Abstract

The authors have carried out the gamma-ray spectrometry of some Vesuvius lavas, by means of a S.E.L.O. equipment which consists of a 100 channels analyzer joined to a photomultiplier tube annexed to aNaI(T1) phosphor. TheU 238,Th 232,Ra 226 andK 2 O contents have been determined and the following conclusions have been drawn: theU 238 seems to be present in the examined lavas and the contents are fairly equal within the errors; also theTh 232 andK 2 O contents show no sensible variations in the different lavas. TheRa 226 content is remarkably higher than that necessary for the equilibrium with the observedU 238 content and shows a decrease with the age of the lavas. TheRa 226 content which exceeds that necessary for the equilibrium with the observedU 238 content decreases with a law similar to the natural radioactive decay ofRa 226.

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Authors
  1. Pio Vittozzi
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  2. Paolo Gasparini
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Additional information

Paper read at the IAV scientific session of Aug. 30, 1963 (XIII General Assembly, I.U.G.G.).

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Vittozzi, P., Gasparini, P. Gamma ray spectra of some lavas from Vesuvius. Bull Volcanol 27, 301–313 (1964). https://doi.org/10.1007/BF02597527

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  • DOI: https://doi.org/10.1007/BF02597527

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