Elsevier

Nuclear Physics A

Volume 121, Issue 1, 2 December 1968, Pages 131-144
Nuclear Physics A

Étude expérimentale et analyse des fonctions d'excitation 165Ho(α, χn) et 169Tm (α, χn)

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Abstract

Absolute cross sections and excitation functions for α-induced reactions have been measured from 15 to 55 MeV by activation and stacked-foil techniques. The following reactions were observed: 165Ho(α, 5n)164Tm, 165Ho(α, 4n)165Tm, 165Ho(α, 3n)166Tm, 165Ho(α, 2n)167Tm, 165Ho(α, n)168Tm, 169Tm(α, 5n)168Lu, 169Tm(α, 4n)169Lu, 169Tm(α, 3n)170Lu, 169Tm(α, 2n)171Lu and 169Tm(α, n)172Lu. The experimental results agree fairly well with the theoretical value for T = 1.66 MeV except for the high-energy “tail” of these reactions. Interpretations were proposed with the help of a quantal process instead of Monte-Carlo calculation.

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