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Stopping-Power and Range Tables
for Electrons, Protons, and Helium Ions

M.J. Berger, J.S. Coursey, M.A. Zucker and J. Chang
(NIST, Physical Measurement Laboratory)

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The databases ESTAR, PSTAR, and ASTAR calculate stopping-power and range tables for electrons, protons, or helium ions, according to methods described in ICRU Reports 37 and 49. Stopping-power and range tables can be calculated for electrons in any user-specified material and for protons and helium ions in 74 materials.


  1. Introduction
  2. ESTAR: Stopping Powers and Ranges for Electrons
  3. PSTAR and ASTAR: for Protons and Helium Ions (alpha particles)
  4. References
  5. Appendix: Significance of Calculated Quantities

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This work was supported in part by the Department of Energy, Office of Health and Environmental Research, Washington, D.C. 20585; and by NIST's Systems Integration for Manufacturing Applications (SIMA) Program.

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Electrons | Protons | Helium Ions

NIST Standard Reference Database 124
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Online: October 1998  -  Last update: August 2005

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