NIST Physical Measurement Laboratory XCOM Photon Cross Sections Database

[skip navigation] National Institute of Standards and Technology NIST Physical Measurement Laboratory

File Format and Example Files

Each file to be uploaded should be an ASCII file containing one additional energy per line. The energy may be expressed in standard or exponential format, in MeV, and must be between 1 keV (10-3 MeV) to 100 GeV (105 MeV). Some examples follow:

Example 1 
1.23e1
2.34e2
3.45e3
1.222e1
Example 2 
0.01
1.23
100.23

Database Search Form

How to Run the XCOM Program.


XCOM Photon Cross Sections Database homepage