Neutrons NIEL

Damage Function
ASTM Standard
Target Material	Displacement Threshold Energy [eV]

Neutron energy range
Minimum Energy:	[MeV]
Maximum Energy:	[MeV]
Dose Imparted for
Particle Fluence:	[cm^-2]

EXAMPLE:
NIEL for Neutrons in Silicon:

NOTE:

The present Neutron NIEL calculator is based on the values published on ASTM E722-09, E722-14 and E722-19.

For ASTM E722-09 the displacement threshold energy used is 25 eV for Si and 10 eV for GaAs

For ASTM E722-14 the displacement threshold energy used is 20.5 eV for Si and 10 eV for GaAs

For ASTM E722-19 the displacement threshold energy used is 10 eV for GaAs

Currently, the lower energy limit for Neutrons NIEL is 1e-4 eV. The higher energy limit is 20 MeV.

In the following table, the ENDF/B cross section library employed for Si and GaAs in ASTM standard is reported:

Currently, ENDF/B.VIII.0 is the most recent library.

	ASIF: ASI Supported Irradiation Facilities
	HelMod: the heliospheric modulation model
	GeoMagsphere: the transport model for magnetosphere
	ASIF Gateway: for accessing irradiation facilities
	ASIF Contact Tool

Neutrons NIEL Calculator Using ASTM Standards