Summary
A simple analytical relation giving the range of a heavy charged particle (p, α, …) as a function of its initial kinetic energy is established. This relation contains two parameters, depending on the medium. The ranges calculated are in agreement with the experimental results; the precision is of 1% at the non relativistic energies, which is comparable with the precision given by Vigneron’s method. An approximate relation, more rapidly calculable, gives a precision of 2 or 3%. Curves are established in three media: photographic emulsion, air and aluminium.
Riassunto
Si stabilisce una semplice relazione analitica per il raggio d’azione di una particella pesante carica (p, α …) in funzione della sua energia cinetica iniziale. Questa relazione contiene due parametri dipendenti dal mezzo. I raggi d’azione calcolati sono in accordo coi risultati sperimentali; la precisione è dell’1% alle energie non relativistiche, il che è confrontabile con la precisione offerta dal metodo di Vigneron. Una relazione approssimata, che si presta a calcoli più rapidi, dà una precisione del 2 o 3%. Le curve sono tracciate per tre mezzi: emulsione fotografica, aria, alluminio.
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Boursière de l’Institut Interuniversitaire des Sciences Nucléaires.
Nous tenons à remercier vivement le ProfesseurOcchialini, le Dr.Franzinetti et le Dr.Vanderhaeghe pour les suggestions qu’ils nous ont faites à l’occasion du présent travail.
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Janssens, P., René, M. Recherche d’une relation sémi-empirique parcours-énérgie pour les milieux composés. Nuovo Cim 2, 760–772 (1955). https://doi.org/10.1007/BF02725038
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DOI: https://doi.org/10.1007/BF02725038