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5 maj 2023 · The closest equivalent I can find is the proton charge radius, which stems from electron-proton scattering. Edit: The differential cross section of high energy photons hitting protons found here (Figs. 10 and 11) looks quite similar to data from Compton scattering off an electron (pdf, Fig 2).
The radius of the proton is defined by a formula which can be calculated by quantum electrodynamics and be derived from either atomic spectroscopy or by electron–proton scattering. The formula involves a form-factor related to the two-dimensional parton diameter of the proton.
The rms charge radius is a measure of the size of an atomic nucleus, particularly the proton distribution. The proton radius is about one femtometre = 10 −15 metre . It can be measured by the scattering of electrons by the nucleus.
7 mar 2019 · In a new study, Miller shows how the proton radius can be defined in a unified way according to photon-proton interactions. The first measurements of the proton radius were based on the energy levels of hydrogen, giving a value of around 0.88 femtometers.
19 cze 2021 · Experimentalists have to measure the number of deflected electrons as a function of the scattering angle, but the most accurate value for the proton radius comes when there is no deflection (i.e. when electrons transfer zero momentum to the protons).
30 wrz 2020 · The charge radius of the proton can be determined using two different experimental techniques: measurements of electron–proton elastic scattering cross sections and high-resolution...
The CODATA recommended value of a proton's charge radius is 8.4075(64) × 10 −16 m. [54] The radius of the proton is defined by a formula that can be calculated by quantum electrodynamics and be derived from either atomic spectroscopy or by electron–proton scattering.
