Atomic and nuclear properties of californium (Cf)
QuantityValueUnits ValueUnits
Atomic number 98     
Atomic mass [251.07959(3)] g mole-1   
Specific gravity 15.10 g cm-3   
Mean excitation energy 966.0 eV   
Minimum ionization 1.077 MeV g-1cm2 16.27 MeV cm-1
Nuclear collision length 120.4 g cm-2 7.974 cm
Nuclear interaction length 212.8 g cm-2 14.09 cm
Pion collision length 143.2 g cm-2 9.486 cm
Pion interaction length 238.9 g cm-2 15.82 cm
Radiation length 5.68 g cm-2 0.3764 cm
Critical energy 6.05 MeV (for e-) 5.82 MeV (for e+)
Molière radius 19.92 g cm-2 1.319 cm
Plasma energy ωp 69.96 eV   
Muon critical energy 116. GeV   
Melting point 1173. K 900.0 C
For muons, dE/dx = a(E) + b(E) E. Tables of b(E): PDF TEXT
Table of muon dE/dx and Range: PDF TEXT
Explanation of some entries
Note: Since there is no stable isotope, [atomic mass] is that of the longest-lived isotope known as of Jun 2017.
Note: Ieff = 966 eV assumed in calculating critical energies and dE/dx.
Table of isotopes via WIKIPEDIA