**EXAMPLE:**

Energetic nuclear recoil probability for Protons in Silicon with E

_{ener}=0.1 MeV:

**NOTE:**

**Probability**for an incoming proton or ion to generate a recoil nuclei above the requested E

_{ener}value is derived by

(total probability in cm

^{2}g

^{-1}) x (absorber density in g cm

^{-3}) x (traversed thickness in cm),

where the "total probability in cm

^{2}g

^{-1}" is obtained by the web calculator, absorber density and traversed thickness are defined by the user; E

_{ener}is the the lower limit of recoil energy (for explanation see Energetic Nuclear Recoil Page)

**Probability**depends on the energy of the incoming particle.

^{2}/g is obtained as a weighted sum in which each material contributes proportionally to the fraction of its atomic weight. An example for selection, with water (H

_{2}O) as target, follows:

or equivalently