## Abstract

The sensitivity of Monte Carlo estimates of backscattering coefficients η to the accuracy of their input data is examined by studying the percentage change in η due to changes of 10% and 20% in the differential elastic scattering cross-section dσ/dΩ and corresponding changes in the stopping power S(E) in the primary energy range 200-10,000-eV. To a good approximation equivalent elastic and inelastic scattering changes produce equal and opposite shifts in η, a result consistent with predictions of transport theory. For medium to high atomic numbers an x% error in the specification of either S(E) or dσ/dΩ produces a percentage change in η significantly less than x%, while at low atomic number Δη/η increases approximately linearly with ln-E so that Monte Carlo predictions are then more sensitive to parameter precision at high energy.

Original language | English |
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Pages (from-to) | 241-245 |

Number of pages | 5 |

Journal | Scanning |

Volume | 36 |

Issue number | 2 |

Early online date | 6 May 2013 |

DOIs | |

Publication status | Published - 1 Mar 2014 |

## Keywords

- backscattering coefficient
- continuous slowing down approximation
- elastic scattering
- electron transport
- error propagation
- Monte Carlo
- stopping power