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The ESTAR program calculates stopping power, density effect parameters, range, and radiation yield tables for electrons in various materials. Select a material and enter the desired energies or use the default energies. Energies are specified in MeV, and must be in the range from 0.001 MeV to 10000 MeV.

Help                         Text version                         Material composition data

Select a common material:

or enter a unique material
Graph stopping power:
    Total Stopping Power
    Collision Stopping Power
    Radiative Stopping Power
Graph density effect parameter
Graph CSDA range
Graph radiation yield
No graph
Additional Energies (optional):

Use energies from a file*


Use energies entered below (one per line)
    Include default energies

Note: Only stopping powers and the density effect parameter will be calculated if additional energies are used.

* Your browser must be file-upload compatible.