A new, consistent with wave-optics, method of treating diffraction and refraction in nuclear elastic scattering, is proposed and discussed. The method is based on the decomposition of the total elastic-scattering amplitude, written in a different form than usual, into the amplitude describing pure diffraction, and the rest, i.e., refraction and reflection. It is shown that nuclear diffraction is due to incompleteness of the Coulomb-scattering amplitude and is described by it. It is show that diffraction can be regarded as a kind of "background" always present, irrespective of the system being studied. PACS Nos.: 24.10.Ht, 42.25.Fx, 42.25.GyRésumé : Nous proposons et analysons une nouvelle méthode, cohérente avec l'optique ondulatoire, pour décrire la diffraction et la réfraction dans la diffusion nucléaire élastique. La méthode est basée sur la décomposition de l'amplitude de diffusion élastique totale, écrite d'une façon différente, en une amplitude décrivant la diffraction pure et une autre amplitude qui comprend la réfraction et la réflexion. Nous montrons que la diffraction nucléaire est due à l'inachèvement de l'amplitude coulombien et est décrite par elle. Nous montrons que la diffraction peut être vue comme une sorte de bruit de fond toujours présent, indépendamment du système étudié.[Traduit par la Rédaction]
Using one of the two possible representations of Coulomb scattering amplitude, a Generalized Sum-of-Differences (GSOD) formula is derived and discussed. It is shown that this new, Generalized SOD formula is not a special case of the Generalized Optical Theorem but is more general. The Modified SOD formula can be a useful tool for very precise determination of absolute values of the elastic differential cross-section in certain situations. Such precision cannot be obtained using any other method.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.