This is the Non-Ionizing Energy-Loss (NIEL) Code Web application for neutrons not using ASTM Standard.
The following links give access to neutrons NIEL code:
- Neutrons NIEL calculator (registered)
How to use this Neutron NIEL Calculator
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.
- Partition Function
- Target material (nuclei available are listed at this page.)
- Calculator energy limits
- Particle fluence.
The selection allows one to specify the analitycal approximation of the partition function used in the NIEL calculation. Registered users can select Robinson or Akkermann approximation. More information is available in the Energy Partition Function page.
In this section it is possible to specify the composition of the target material selecting the number of elements in the compound. Nuclei available are listed at this page. The required parameters for each element are:
- Atomic number (Z)/Chemical symbol
- Stoichiometric index or element fraction
- The displacement threshold energy [eV] (some predefined threshold energies, from 5 eV to 30 eV are available).
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
Particle Fluence for Displacement Damage Dose Calculation
Here is defined the particle fluence that is used to obtain the deposited NIEL Dose (i.e., the displacement damage dose).
The result page contains the input parameters, the NIEL curve and the result table, which includes the NIEL, and the NIEL Dose (in [MeV g-1] and [Gy])