منابع مشابه
Neutron–3H and Proton–3He Zero Energy Scattering
The Kohn variational principle and the (correlated) Hyperspherical Harmonics technique are applied to study the n − 3H and p − 3He scattering at zero energy. Predictions for the singlet and triplet scattering lengths are obtained for non–relativistic nuclear Hamiltonians including two– and three– body potentials. The calculated n−3H total cross section agrees well with the measured value, while...
متن کاملProton Elastic Scattering and Neutron Distribution of Unstable Nuclei
We study theoretically how we can determine the neutron density distributions of unstable nuclei from proton elastic scattering. We apply the relativistic impulse model to study the sensitivities of the observables to the density distributions which are expressed in Woods-Saxon form. We find that the both radius and diffuseness of densities can be determined from restricted elastic scattering d...
متن کاملNeutron scattering on nuclei.
Very small angle neutron scattering studies have been made on intact nuclei under a variety of solution conditions. Scattering maxima are observed at 30 to 40 nm and at 18 nm in most environments. Although the spacing, intensity and presence of the maximum near 40 nm varies considerably with environment the 18 nm is rather constant. The 30 to 40 nm maximum appears to be best interpreted by the ...
متن کاملProton dynamics in oxides: insight into the mechanics of proton conduction from quasielastic neutron scattering.
This article is concerned with the use of quasielastic neutron scattering as a technique for investigation of the dynamical properties of proton conducting oxides. Currently, the main interest in these materials comes from their promise as electrolytes in future electrochemical devices and particularly through their use as electrolytes in next-generation, intermediate-temperature, fuel cells. H...
متن کاملExperimental neutron scattering evidence for proton polaron in hydrated metal oxide proton conductors
Hydration of oxygen-deficient metal oxides causes filling of oxygen vacancies and formation of hydroxyl groups with interstitial structural protons, rotating around the oxygen in localized motion. Thermal activation from 500 to 800 K triggers delocalization of the protons by jumping to adjacent oxygen ions, constituting proton conductivity. We report quantitative analyses of proton and lattice ...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1951
ISSN: 0033-068X
DOI: 10.1143/ptp.5.162