Summary
The target thickness dependence of the shape of the convoy electron peak from protons (2.4 MeV/u) emerging from thin carbon foils ((2.2÷20)μg/cm2) is studied by a series expansion fitting method. Th results show nearly symmetric and target-thickness-independent behaviour close to the maximum of the peak. In the wings of the peak, however, a thickness-dependent asymmetry is observed.
Riassunto
Si è studiata la dipendenza dallo spessore del bersaglio della forma del picco del convoglio elettronico da protoni (2.4MeV/u), emergenti da sottili fogli di carbonio ((2.2÷20)μg/cm2) mediante il metodo di approssimazione con uno sviluppo in serie. I risultati mostrano un comportamento quasi simmetrico e indipendente dallo spessore del bersaglio vicino al massimo del picco. Ai lati del picco, tuttavia, si osserva un'asimmetria dipendente dallo spessore.
Реюме
Исследуется форма пика конвойных электронов, индуцированных протонами (2.4 MeV/u), от толшины мишени, которые вылетаут из тонких углеродных фольг ((2.2÷20) мкг/см2). Полученные результаты показывают почти симметричное и не зависящее от толщины мишени поведение вблизи максимума пика. Однако на крыльях пика наблюдается асимметрия, зависящая от толщины.
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Heil, O., Kemmler, J., Koschar, P. et al. Shape analysis of the proton-induced convoy electron peak. Il Nuovo Cimento D 9, 473–480 (1987). https://doi.org/10.1007/BF02667942
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DOI: https://doi.org/10.1007/BF02667942