(n, d)-reactions on medium mass nuclei

Abstract

An analysis is made of the various mechanisms contributing to the (n, d) reaction on the , and nuclei at incident energies up to 15 MeV. It is shown that the main contribution is given by the pick-up process. The statistical contributions are small, especially for . A model of the (n, d) knock-out reaction, in which restrictions on the available phase space for the proton and the neutron in the deuteron after the knock-out are imposed by a Pauli-blocking function, is suggested and applied. The model is close to that for quasi-deuteron photo-absorption and the knock-out model previously developed. It is shown that the knock-out contribution calculated within this model is generally small, but it leads to some improvement of the description of the existing data for the (n, d) reaction on the three nuclei considered in the low-energy interval.

Discrete strength levels in modified polypropylene tapes

“…The i-PP tapes were prepared on an industrial line Barmag (Germany) at orientation temperatures of 423K (of thermooven) and 413K (of hot rolls), stretching ratio (f) of seven-fold and thermofuration temperature 288K by a technique described in detail in ( 17).…”

Similarity Metrics and Descriptor Spaces – Which Combinations to Choose?

“…This introduces a severe limitation on the application of any molecular similarity approach to such a problem. The similarity model applies only to molecules that are similar enough to those in a training set, by measure of appropriate descriptors [39]. For this reason, approaches to similarity in virtual screening generally follow a neighbourhood approach, i.e.…”

Nuclear dynamics in multinucleon transfer reactions near Coulomb barrier energies

“…On the other hand, the characteristics of the multi-nucleon transfer reaction (MNT) and deep inelastic heavy-ion collisions is related to the preequilibrium cluster emission, which has been attempted to create the neutron-rich heavy nuclei, in particular around the neutron shell closure. There are a number of experiments for measuring the kinetic energy spectra, double differential cross section, angular distribution etc [2][3][4][5][6][7]. The deep investigation of the preequilibrium cluster emission in transfer reactions is helpful for exploring the cluster structure of the stable or unstable nuclide, the cluster formation mechanism in nuclear reaction, the synthesis of superheavy nucleus or new isotope, the MNT mechanism etc [8][9][10][11][12].…”