Atomic and nuclear properties of materials:
Cesium (Cs)
QuantityValueUnits ValueUnits
Atomic number 55     
Atomic mass 132.9054519(2) g mole-1   
Density 1.87 g cm-3   
Mean excitation energy 488.0 eV   
Minimum ionization 1.254 MeV g-1cm2 2.349 MeV cm-1
Nuclear collision length 101.2 g cm-2 54.01 cm
Nuclear interaction length 172.8 g cm-2 92.25 cm
Pion collision length 125.3 g cm-2 66.88 cm
Pion interaction length 200.2 g cm-2 106.9 cm
Radiation length 8.31 g cm-2 4.434 cm
Critical energy 11.34 MeV (for e-) 10.97 MeV (for e+)
Molière radius 15.53 g cm-2 8.292 cm
Plasma energy 25.37 eV   
Muon critical energy 200. 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