Fri·Mar 22, 2019Friday·March 22, 2019

1. 01*

   Time reversal invariance violation in neutron-nucleus scattering

   Pavel Fadeev🇩🇪 · Victor V. Flambaum🇦🇺

   Planning and interpretation of the experiments searching for the time reversal (T) and parity (P) violation in neutron reactions require values of the matrix elements of the T,P-violating nuclear forces between nuclear compound states. We calculate the root mean square values and the ratio of the matrix elements of the T,P-violating and P-violating interactions using statistical theory based on the properties of chaotic compound states and present the results in terms of the fundamental parameters in four different forms: in terms of the constants of the contact nuclear interaction, meson exchange constants, QCD theta-term and quark chromo-EDMs. Using current limits on these parameters, we obtain the upper bounds on the ratio of the matrix elements.

   ↳ nucl-thhep-phnucl-exphysics.atom-phPRC(2019)·24 citations
2. 02*

   A model for Ni-63 source for betavoltaic application

   Abderrahmane Belghachi · Kutsal Bozkurt🇹🇷 · Hassane Moughli · Orhan Özdemir · Benameur Amiri · Abdelkrim Talhi

   A mathematical model of Ni-63 source for betavoltaic batteries is presented, based on Monte Carlo calculation. Trajectories of beta particles are simulated in Ni-63 source until their escape or total energy dissipation. Analysis of the effect of physical and technological factors on the performance of a source is carried out. Special attention is given to self-absorption and substrate backscattering because of their impact on power emission. Addition of a protective layer diminishes the source emission because of further absorption. The model has been tested successfully for Ni-63/GaN structure.

   ↳ physics.app-phnucl-exphysics.ins-detActa Phys.Polon.A(2020)·0 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.