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Polarization of nucleons from photodisintegration of deuterium

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Il Nuovo Cimento (1955-1965)

Summary

The polarization of nucleons from the D(γ, n) reaction is investigated under the assumption of tensor coupling in the n-p interaction potential. Dipole electric and dipole magnetic transitions are taken into consideration. The polarization is estimated forħω=40 MeV with the help of recent p-p scattering phase shifts. For sake of illustration the polarization is given for the very singularL·S Case and Pais force in Born approximation and for the weak tensor forces of Rarita and Schwinger. The polarization is sensitive to the type of interaction. The general scheme of calculation of the reaction amplitude for tensor forces is given. The quadrupole electric corrections to the polarization are discussed.

Riassunto

Postulando accoppiamento tensoriale nel potenziale d’interazione n-p, si studia la polarizzazione dei nucleoni prodotti nella reazione D(γ, n). Si prendono in considerazione transizioni di dipolo elettrico e magnetico. Con l’ausilio dei recenti spostamenti di fase p-p si valuta la polarizzazione perωħ=40 MeV. A titolo di esempio si dà in approssimazione di Born la polarizzazione per lo specialissimo caso del potenzialeL·S di Case e Pais e per le forze tensoriali deboli di Rarita e Schwinger. La polarizzazione risente del tipo di interazione. Si dà lo schema generale di calcolo dell’ampiezza di reazione per le forze tensoriali. Si discutono le correzioni di quadrupolo elettrico da apportare alla polarizzazione.

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Czyż, W., Sawicki, J. Polarization of nucleons from photodisintegration of deuterium. Nuovo Cim 5, 45–56 (1957). https://doi.org/10.1007/BF02812816

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  • DOI: https://doi.org/10.1007/BF02812816

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