Atomic and nuclear properties of materials:
Hydrogen BC liquid DEG calc to check code (H )
QuantityValueUnits ValueUnits
Atomic number 1     
Atomic mass 1.00794(7) g mole-1   
Density 0.0600 g cm-3   
Mean excitation energy 21.8 eV   
Minimum ionization 3.950 MeV g-1cm2 0.2370 MeV cm-1
Nuclear collision length 42.8 g cm-2 714.0 cm
Nuclear interaction length 52.0 g cm-2 866.8 cm
Pion collision length 70.4 g cm-2 1173. cm
Pion interaction length 80.3 g cm-2 1338. cm
Radiation length 63.04 g cm-2 1051. cm
Critical energy 277.14 MeV (for e-) 270.62 MeV (for e+)
Molière radius 4.82 g cm-2 80.40 cm
Plasma energy 7.03 eV   
Muon critical energy 3095. GeV   
For muons, dE/dx = a(E) + b(E) E. Tables of b(E): PS PDF TEXT
Table of muon dE/dx and Range: PS PDF TEXT
Explanation of some entries
Table of isotopes Warning: may not be current
x ray mass attenuation coefficients