Two-proton emission systematics
نویسندگان
چکیده
The simultaneous emission of two protons is an exotic and complex three-body process. It very important for experimental groups investigating the nuclear stability on proton drip line to have a simple rule predicting two-proton decay widths with reasonable accuracy transitions between ground as well excited states in terms relevant physical variables. In spite its complexity, we show that process obeys similar rules binary processes like proton, alpha heavy cluster decays. turns out logarithm width, corrected by centrifugal barrier, linearly depends upon Coulomb parameter within one order magnitude. On other hand, universal linear dependence negative slope reduced width fragmentation potential, valid any kind process, also fulfilled relative good accuracy. As consequence pairing correlations are simultaneously emitted from singlet paired state. We evidence indeed obtains gap factor two, giving predictive power this law. diproton alpha-cluster formation probabilities patterns versus gap, while one-proton case has quasi-constant behavior.
منابع مشابه
TWO - PROTON RADIOACTIVITY : TRACKING 2 He EMISSION
Two proton radioactivity has been observed experimentally in the decay of Fe and Zn, and possibly of Ni. These first experiments only allowed for a limited comparison with theory: T1/2 and Q2P values. Experimental efforts have been achieved to measure dynamical observables in order to perform a more detailed study of the decay mechanism. Time projection chambers have been developped by groups o...
متن کاملA model for two-proton emission induced by electron scattering
A model to study two-proton emission processes induced by electron scattering is developed. The process is induced by one-body electromagnetic operators acting together with short-range correlations, and by two-body ∆ currents. The model includes all the diagrams containing a single correlation function. A test of the sensitivity of the model to the various theoretical inputs is done. An invest...
متن کاملTwo-proton emission from the ground state of 12O.
The three-body decay ' 0 ~ 2p + 'OC was studied following production via single-neutron stripping from a radioactive "0 projectile. This is the first observation of two-proton emission from an unbound ground state where the one-proton emission channel is energetically closed beyond the lightest case of Be. No evidence for He emission is seen, despite predictions for a large diproton branching r...
متن کاملProton-induced X-ray Emission
Black particles, collected by filtration (1.2~pm pore size) from the anoxic waters of a soft-water lake, were examined by a scanning proton microprobe which permitted quantitative elemental analysis by proton-induced X-ray emission (PIXE) and Rutherford backscattering (RBS). There was a uniform distribution of sulfur across the filter, but Fe, and to a lesser extent, Mn, was localized in -5-pm-...
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: Physical Review C
سال: 2022
ISSN: ['2470-0002', '2469-9985', '2469-9993']
DOI: https://doi.org/10.1103/physrevc.105.l031301