Variational Calculation of Neutron-Proton Scattering
نویسندگان
چکیده
منابع مشابه
Ab initio calculation of the neutron-proton mass difference.
The existence and stability of atoms rely on the fact that neutrons are more massive than protons. The measured mass difference is only 0.14% of the average of the two masses. A slightly smaller or larger value would have led to a dramatically different universe. Here, we show that this difference results from the competition between electromagnetic and mass isospin breaking effects. We perform...
متن کاملVariational calculation of positronium-helium-atom scattering length
We present a variational basis-set calculational scheme for elastic scattering of positronium atom by helium atom in S wave and apply it to the calculation of the scattering length. Highly correlated trial functions with appropriate symmetry are used in this calculation. We report numerical result for the scattering length in atomic unit: (1.0 ± 0.1)a0. This corresponds to a zero-energy elastic...
متن کاملMolecular Dynamics Calculation of Neutron Inelastic Scattering from Water*
The data generated by a molecular dynamics calculation on liquid water at 1 gm CM-3 and 10 °C have been used to simulate a neutron inelastic scattering experiment on water. It is shown that already at K '' 1 A-i the function w 2Snc(K, w)/K 2 i5 a good replica of the spectrum of proton velocity autocorrelation . It is emphasized that the separation of (K, o) into quasielastic and inelastic parts...
متن کاملCalculation of Neutron Dose Ratio of Heart, Lung and Liver due to breast cancer Proton Therapy using MCNPX code
Introduction: The proton beam produced in particle accelerators has an appropriate therapeutic potential. In this research, proton therapy of breast cancer is simulated using the MCNPX code in a MIRD phantom, also the contribution of scattered neutron dose during the proton therapy were calculated for the Heart, Lung and Liver. Materials and Methods: For si...
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 کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1969
ISSN: 0033-068X
DOI: 10.1143/ptp.42.36