Eur. Phys. J. D (2013) 67: 214
https://doi.org/10.1140/epjd/e2013-40164-8

Regular Article

Semi-empirical model for stopping cross sections of p, α and Li ions

¹ Department of Physics, University of Rajshahi, 6205 Rajshahi, Bangladesh
² Department of Physics, Florida A&M University, Tallahassee, FL 32307, USA
³ Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA
⁴ Department of Physics, Washington University, St. Louis, MO 63130, USA

^a e-mail: uddinmda@yahoo.com

Received: 23 March 2013
Published online: 18 October 2013

Abstract

Absolute magnitudes of stopping cross sections (SCS) for H⁺, He²⁺ and Li³⁺ in various stopping media with atomic numbers Z₂ = 2 to 100 are calculated using atomic density functions from Dirac-Hartree-Fock-Slater wave functions in the Lindhard-Schraff theory [J. Lindhard, M. Scharff, Kgl. Danske Videnskab. Selskab. Mat. Fys. Medd. 27, 15 (1953)]. The newly proposed formula, characterizing projectile-specific parameters in the incident energy range considered herein, describes satisfactorily the experimental and SRIM-simulated SCS data from low energies, with projectile velocities nearing v = Z₁v₀ (with Z₁ as the projectile’s atomic number, v₀ = c / 137, the Bohr velocity and c, the speed of light in vacuum), to high energies up to about 2.5 MeV/u.