Edit examples.md

`/run/beamOn 1`

<details><summary> ProtonScattering

</summary>

<img src="images/scattering_example.png"  width="400" height="120" >

Low-energy, or soft, protons (< 300 keV) that enter the field

of view of X-ray focusing telescopes can scatter at grazing an-

gles with the surface of Wolter-type mirrors and reach the fo-

cal plane, causing unpredictable flares in the background rate

of the instruments ([Marelli et al., 2017](https://ui.adsabs.harvard.edu/abs/2017ExA....44..297M/abstract); [Freyberg et al., 2020](https://ui.adsabs.harvard.edu/abs/2021SPIE11444E..1OF/abstract)).

BoGEMMS was used to simulate the soft-proton-induced back-

ground on the XMM-Newton and Athena X-ray telescopes.

The precision of such predictions was assessed in [Fioretti et al.

(2024)](https://ui.adsabs.harvard.edu/abs/2024A%26A...691A.229F/abstract)

 by comparing Geant4 physics scattering models with

experimental measurements of proton scattering on a sample

of the eROSITA mirror ([Diebold et al., 2017](https://ui.adsabs.harvard.edu/abs/2017SPIE10397E..0WD/abstract)). The geometry,

physics list, configuration, and macro files used to simulate the

scattering efficiency are distributed in the example application.

The proton beam hits the eROSITA mirror sample, rotated to

measure different incident angles, and then a detector is moved

normally to the plane to measure the scattering efficiency at dif-

ferent scattering angles. For each scattering angle, the number

of detected protons is divided by the number of protons hitting

the target and the solid angle subtended by the detector to com-

pute the scattering efficiency, in sr−1. The mass model includes

an empty disk representing the collimator exit, a layered rect-

angular slab of Gold-coated Nickel to model the mirror sample,

and a set of silicon disks representing the detector moved at dif-

ferent heights. A dedicated physics class allows the user to se-

lect the electromagnetic physics among the AREMBES Space

Physics List, the Geant4 built-in Option4

and Single Scattering physics lists. Several custom parameters,

including the rotation of the target, can be adapted at runtime

using the configuration file.