Lembit Sihver

TL;DR: In this article, the Particle and Heavy Ion Transport Code System (PHITS) 3.02 has been released and the accuracy and the applicable energy ranges of the code were improved.

TL;DR: An upgraded version of the Particle and Heavy Ion Transport code system (PHITS2.52) was developed and released to the public in this article, which is a more powerful tool for particle transport simulation applicable to various research and development fields.

TL;DR: In this paper, the authors present a summary of the recent development of the multi-purpose Monte Carlo Particle and Heavy Ion Transport code system, PHITS, and discuss in detail the development of two new models, JAM and JQMD, for high energy particle interactions, incorporated in PHITS.

TL;DR: An analytical model, named PARMA, is proposed for estimating the cosmic-ray spectra of neutrons, protons, helium ions, muons, electrons, positrons and photons applicable to any location in the atmosphere at altitudes below 20 km, that enables the cosmic radiation doses rapidly with a precision equivalent to that of the Monte Carlo simulation.

TL;DR: In this paper, the authors developed semi-empirical total reaction cross section formulas for proton nucleus and nucleus-nucleus reactions for incident energies above 15 MeV and 100 MeV/nucleon respectively.