We have c-ed out a generalization of the continuum-distoned-we~ikonal-initialstate (CDW-EJS) approximation for ion-impact single ionization where the interaction of the active e l e m n with the target is represented by a Hxtree-Fock potential We apply this model to the ionization of He, Ne and AI by proton and multiply-charged bare-ion impact. Doubly differential and total cross sections me calculated from each subshell. These cross sections summed over all subshells show a much better agreement with experimental data than those obtained from the previous formulations of the c ~i v a s appmximation which use hydrogenic wavefuncrions with effective charges.

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Bitcoin's Lightning Network (LN) is a scalability solution for Bitcoin allowing transactions to be issued with negligible fees and settled instantly at scale. In order to use LN, funds need to be locked in payment channels on the Bitcoin blockchain (Layer-1) for subsequent use in LN (Layer-2). LN is comprised of many payment channels forming a payment channel network. LN's promise is that relatively few payment channels already enable anyone to efficiently, securely and privately route payments across the whole network. In this paper, we quantify the structural properties of LN and argue that LN's current topological properties can be ameliorated in order to improve the security of LN, enabling it to reach its true potential.

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Angle-and energy-dependent cross sections for electron emission were measured for 68-MeV/u Kr 33ϩ ions impacting on H 2 . These results show, in accordance with our earlier observation, that interference effects are produced by the coherent emission of electrons from the two H atoms, in analogy with Young's two-slit experiment. Furthermore, the present results demonstrate that the observed oscillatory pattern varies with the electron observation angle, contrary to our earlier expectations but in agreement with recent theoretical predictions.

Transition amplitudes and probabilities are the basic quantities of numerous theoretical approaches for the interpretation of collisional processes. These quantities are often evaluated from the transition matrix via Fourier transformation. However, a modification of the axial symmetry of the collision has sometimes been introduced to simplify the calculation. The present study shows that such a simplification is in general not justified and a source of highly unrealistic results. This is demonstrated in studies of single and double ionization of helium by ion impact.