M.J. Berger1, J.S. Coursey2, M.A. Zucker2 and J. Chang2
1National Institute of Standards and Technology (NIST), Physics Laboratory (now Physical Measurement Laboratory (PML)), Ionizing Radiation Division (deceased)
2NIST, Physics Laboratory (now PML), Office of Electronic Commerce in Scientific and Engineering Data
Updated by: S.M. Seltzer and P.M. Bergstrom - both of PML Radiation Physics Division
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.
The data for graphite, air and water have been recently re-evaluated by a committee of the ICRU resulting in ICRU Report 90.
The main findings of this report are provided in this summary (PDF) .
- ESTAR: Stopping Powers and Ranges for Electrons
- PSTAR and ASTAR: for Protons and Helium Ions (alpha particles)
- Appendix: Significance of Calculated Quantities
Access the Data:
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.
NIST Standard Reference Database 124
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Online: October 1998 - Last update: August 2005