However, for example for Argon (Z=18), the nominal density in J. H. Hubbell+ and S. M. Seltzer is 1.662E-03 g/cm3, while in the table roentgen/roentgen/data/elements_densities.csv is 0.86 g/cm3.
Although the user can input any desired density for a specific material, It will be also helpful to indicate what are the standard conditions for the "nominal densities" (i.e. room temperature and 1 atm).
ehsteve
commented
4 years ago
The documentation says that densities and other physical parameters were grabbed from http://www.nist.gov/pml/data/xraycoef/index.cfm
However, for example for Argon (Z=18), the nominal density in J. H. Hubbell+ and S. M. Seltzer is 1.662E-03 g/cm3, while in the table roentgen/roentgen/data/elements_densities.csv is 0.86 g/cm3.
Although the user can input any desired density for a specific material, It will be also helpful to indicate what are the standard conditions for the "nominal densities" (i.e. room temperature and 1 atm).