Free interactive tools for radiation shielding, dose estimation, and EMI analysis. Built on publicly available data from NIST and standard references.
Calculate photon transmission through single or multi-layer shielding using NIST XCOM mass attenuation coefficients. Supports 92 elements and 48 mixtures.
NIST XCOM DataEstimate gamma and fast neutron shielding thickness. Gamma uses NIST XCOM data; neutron uses the removal cross-section method. Calculate HVL, TVL, and required thickness.
Design ToolConvert photon, proton, or electron fluence to absorbed dose in silicon using NIST cross-section and stopping power data. For ionizing dose (TID) assessment.
NIST Data · rad(Si)Look up proton and electron stopping powers in silicon from NIST PSTAR and ESTAR data. Convert to LET in MeV·cm²/mg and keV/µm for SEE and dose applications.
NIST Data · LETNeutron displacement damage with DT/DD fusion presets (ASTM E722). Proton displacement damage for space radiation environments (SR-NIEL).
NIEL · ASTM E722 · SR-NIELEstimate plane-wave shielding effectiveness vs. frequency for common conductor materials. Calculates reflection, absorption, and total SE.
RF/EMI Tool