Semi-empirical LET descriptions of heavy ions used in the European Component Irradiation Facilities

Semi-empirical fitting based on classical Bohr theory has been applied to the experimental LET data in silicon of the RADEF heavy ion cocktail species. The parameterized LET descriptions to be used in the European Component Irradiation Facilities are introduced and compared with the commonly used estimations from SRIM-code. Also, a new user interface, ECIF Cocktail Calculator, based on this work, has been published under the RADEF webpages at http://www.jyu.fi/accelerator/radef/ECIFCalc.

I. Introduction

THE European Space Agency (ESA) has accredited four laboratories to the European Component Irradiation Facilities group. These are the ESTEC Co-60 facility (ECF) in the Netherlands [1], the Proton Irradiation Facility (PIF) in the Paul Scherrer Institute, Switzerland [2], the Heavy Ion Facility (HIF) at the Cyclotron Research Center of the Catholic University of Louvain, in Belgium [3], and the Radiation Effect Facility (RADEF) located at the Accelerator Laboratory of the University of Jyvaskyla, Finland [4]. Heavy ion irradiations are performed in the two of the latter ones and they both utilize nearly the same ions: HIF (α, N, B, C, Ne, Si, Ar, Ni, Kr, Xe) and RADEF (N, Ne, Si, Ar, Fe, Kr, Xe). The common ions are highlighted.