Atomic and nuclear properties of materials:
Rubidium (Rb)
QuantityValueUnits ValueUnits
Atomic number 37     
Atomic mass 85.4678(3) g mole-1   
Density 1.53 g cm-3   
Mean excitation energy 363.0 eV   
Minimum ionization 1.356 MeV g-1cm2 2.078 MeV cm-1
Nuclear collision length 90.4 g cm-2 59.01 cm
Nuclear interaction length 150.3 g cm-2 98.13 cm
Pion collision length 115.2 g cm-2 75.18 cm
Pion interaction length 178.5 g cm-2 116.5 cm
Radiation length 11.03 g cm-2 7.198 cm
Critical energy 16.61 MeV (for e-) 16.10 MeV (for e+)
Molière radius 14.08 g cm-2 9.191 cm
Plasma energy 23.47 eV   
Muon critical energy 275. 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