Energy loss of deuterons in 3He gas: A threshold effect

A. Formicola, M. Aliotta, G. Gyürky, F. Raiola, R. Bonetti, C. Broggini, L. Campajola, P. Corvisiero, H. Costantini, A. D'Onofrio, Z. Fülöp, G. Gervino, L. Gialanella, A. Guglielmetti, C. Gustavino, G. Imbriani, M. Junker, A. Ordine, P. Prati, V. RocaD. Rogalla, C. Rolfs, M. Romano, F. Schümann, E. Somorjai, O. Straniero, F. Strieder, F. Terrasi, H. P. Trautvetter, S. Zavatarelli

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The energy loss of deuterons in 3He gas was measured at Ed = 15 to 100keV using the 3He pressure dependence of the 3He(d,p)4He cross-section at a given incident energy. At the highest energies, the observed energy loss is in good agreement with a standard compilation. However, with decreasing energy the experimental values drop steadily below the theoretical values and near Ed = 18keV they drop sharply (within 1keV) reaching the domain of nuclear stopping power. This threshold behavior is due to the minimum 1s → 2s electron excitation of the He target atoms, i.e. it is a quantum effect. Some consequences are discussed.

Original languageEnglish
Pages (from-to)443-446
Number of pages4
JournalEuropean Physical Journal A
Issue number4
Publication statusPublished - Jan 1 2000


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Formicola, A., Aliotta, M., Gyürky, G., Raiola, F., Bonetti, R., Broggini, C., Campajola, L., Corvisiero, P., Costantini, H., D'Onofrio, A., Fülöp, Z., Gervino, G., Gialanella, L., Guglielmetti, A., Gustavino, C., Imbriani, G., Junker, M., Ordine, A., Prati, P., ... Zavatarelli, S. (2000). Energy loss of deuterons in 3He gas: A threshold effect. European Physical Journal A, 8(4), 443-446.