arXiv subjects

P. Szalanski

Publications and source records attributed to P. Szalanski.

3 recordsLinked to original sources

arXiv2002

A new method for nuclear-reaction network analysis, element production in S-Cl region during the He and C burning in 25 Ms stars

This paper presents the results of calculation of element overproduction in the S-Cl region during helium and carbon burning in massive stars (25 Ms). Calculations for a given set of differential equations were performed using integrated mathematical systems. The authors think that this method may be successfully adopted for other physical problems in which solving nuclear-reaction network play an important role, in particular for the problem of transmutation of heavy elements and chemical kinetics.

astro-ph↗

arXiv2002

An ionization chamber for (n,z) reaction cross section measurements on gaseous targets

An ionization chamber with gaseous samples has been designed. It has been tested on the beam of the pulsed reactor IBR-30 of FLNP, JINR-Dubna. The experiment has been carried out with resonance neutrons. The exposed gas volume serves as a target for neutron beam. We have compared the chamber to samples on substrates, the background component due to Li and B microimpurities in this case is totally absent. It has been tested also the recovery capability of the chamber after the reactor power pulse using the protons from the 3He(n,p)3H reaction, alpha-particles from a U-source and a pulsed precision generator. Moreover the energy resolution of the chamber with its equipment has been carried out.

nucl-ex↗

arXiv2002

Measurements of the 64Zn(n,a)61Ni cross section at En=5.0-6.75 MeV

The experiment of determination of the 64Zn(n,a)61Ni reaction cross section in the 5.0-6.75 MeV neutron energy range was performed at the 4.5 MV Van de Graaf accelerator at the Institute of Heavy Ion Physics, Peking University, Beijing. Double section ionization chamber with grid was used for direct registration of the reaction products. The cross sections and angular distributions were extracted from the experimental data. The obtained values were compared with the results of other authors and theoretical estimations. The analysis of the experimental data and model calculations were carried out.

nucl-ex↗