Monte Carlo-calculated depth distributions of K and L x-ray fluorescence generated by keV electrons incident upon thick targets made of Au, W, Rh, Mo, Cu, and Cr
Description of this data
Provided is the following:
(1) Monte Carlo-calculated (PENELOPE [v. 2014]) K and L x-ray fluorescence differential in electron penetration depth scaled by the continuous slowing down approximation (CSDA) range.
(2) Radiative transition data and photon mass attenuation coefficients extracted from the PENELOPE materials database.
(3) An example MATLAB code that implements the provided data in an analytical model for the prediction of characteristic x-ray emission from a thick tungsten target.
Experiment data files
Depth distributions of x-ray fluorescence
Depth distributions of x-ray fluorescence following K- or L-shell (L1, L2, or L3) ionization by electron impact (si) or photon interactions (ph) in an x-ray target of atomic number Z.
An example MATLAB code that implements the provided data in an analytical model for the prediction of characteristic x-ray emission from a thick tungsten target.
Radiative transition data and photon mass attenuation coefficients
Radiative transition data for K- or L-shell ionization of target atoms with atomic number Z, and photon mass attenuation coefficients for some relevant filter materials.
Steps to reproduce
The depth distributions of x-ray fluorescence were determined (with a Type A uncertainty within 0.1%) using the PENELOPE [v. 2014] general-purpose Monte Carlo system and its main user code, penmain. The main code was modified to track the point of characteristic K and L x-ray production in a thick x-ray target for a normally incident pencil beam of electrons. The range of incident electron energies considered was from just above the L1-shell binding energy to 500 keV for tungsten and 50 keV for other materials.
The MC calculations were performed with the parameter C1 (and C2) set equal to zero to treat the elastic scattering of electrons in detail (analogue technique). The electron and photon transport cut-off energies EABS(1-2) were set to just below the lowest considered shell ionization energy and characteristic x-ray energy, respectively. The energy transfer thresholds WCC and WCR were set to 1 keV, and the simulations were further optimized by enabling interaction forcing of bremsstrahlung emission and inner-shell impact ionization.
This data is associated with the following publication:
Cite this dataset
Omar, Artur; Andreo, Pedro; Poludniowski, Gavin (2018), “Monte Carlo-calculated depth distributions of K and L x-ray fluorescence generated by keV electrons incident upon thick targets made of Au, W, Rh, Mo, Cu, and Cr”, Mendeley Data, v1 http://dx.doi.org/10.17632/mnr2zx92h3.1
The files associated with this dataset are licensed under a Creative Commons Attribution 4.0 International licence.