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Screened Relativistic (SR) Treatment for NIEL Dose

Nuclear and Electronic Stopping Power Calculator

(version 10.11)

Proton High AMS02 small

This is the SR Nuclear Stopping Power Code Web application.

The following links give access to electrons, protons and ions Nuclear Stopping Power code:

- Electrons Nuclear Stopping Power Calculator

- Protons & Ions Nuclear Stopping Power Calculator


How to use this Nuclear Stopping Power Calculator

This tool calculates the Screened Relativistic (SR) Nuclear Stopping Power curve for a particle incident on a material. For information about the computation method take a look at the Nuclear Stopping Power for Electrons, Protons and Ions page.

The input parameters and options for the tool are described below. When the input form has been completed, pressing the "CALCULATE" button will start the calculation and open the "Results" page (allow for pop-up in your browser settings). The result page will be also linked at the bottom of the calculator page.

Input Parameters:

- Incident particle (for Protons&Ions Calculator)
- Electron form (for Electrons Calculator)
- Target material
- Calculator energy limits.

Incident Particle

In the Protons&Ions Calculator, using the pull down menu, the user can select the species of the incident particle, either a proton or one of the elemental ions.

Electron Form Factor

In the Electron Calculator, the user can select the nuclear form factor (Exponential, Gaussian or Uniform ) model to be used. The form factor accounts for the spatial distribution of charge density probed in the electron-nucleus scattering.

Target Material

In this section it is possible to specify the composition of the target material selecting the number of elements in the compound. The required parameters for each element are:

- Atomic number (Z)/Chemical symbol
- Stoichiometric index or element fraction

Energy Limits

This section define the energy limits of the calculation, and the following parameters will be defined:
- Minimum Energy of the incident particle
- Maximum Energy of the incident particle

The output table will contain 20 fixed values for each decade within the above selected range.

Moreover a text box is provided for entering additional energies. The input format is one energy per line; it is also possible to copy and paste energy values.


The result page contains the input parameters, the Nuclear Stopping Power curve in MeV cmg-1 (i.e., the mass nuclear stopping power) and the result table.