Suppression of the Coulomb interaction in the off-energy-shell p - p scattering from the p + d --> p + p + n reaction.
Off-energy-shell effects in p - p scattering have been investigated at p - p relative energies from 600 down to 80 keV applying the Trojan horse method (THM) to the p + d --> p + p + n reaction at 5 MeV. In contrast with the on-energy-shell case, no Coulomb-nuclear interference minimum has been found in the extracted THM p - p cross section, due to the suppression of the Coulomb amplitude as predicted by the half-off-energy shell calculations. This hypothesis is strengthened by the agreement between THM p - p data and calculated on-energy-shell n + n, n + p and nuclear p + p cross sections.
Dipartimento di Metodologie Fisiche e Chimiche per l'Ingegneria, Università di Catania, Catania, 95125 Italy.
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Tumino
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Spitaleri
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Mukhamedzhanov
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Rapisarda
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Cherubini
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Crucillá
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Elekes
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Fülöp
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Gulino
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Gyürky
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Kiss
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La Cognata
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Lamia
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Mudó
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Pizzone
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Romano
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Sergi
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