Atomic and nuclear properties of californium (Cf)

Quantity	Value	Units	Value	Units
Atomic number	98
Atomic mass	[251.07959(3)]	g mol-1
Density	15.10	g cm-3
Mean excitation energy	966.0	eV
Minimum ionization	1.077	MeV g-1cm2	16.27	MeV cm-1
Nuclear interaction length	212.8	g cm-2	14.09	cm
Nuclear collision length	120.4	g cm-2	7.973	cm
Pion interaction length	238.6	g cm-2	15.80	cm
Pion collision length	143.2	g cm-2	9.486	cm
Radiation length	5.68	g cm-2	0.3764	cm
Critical energy	6.05	MeV (for e-)	5.82	MeV (for e+)
Muon critical energy	116.	GeV
Molière radius	19.92	g cm-2	1.319	cm
Plasma energy ℏωp	69.96	eV
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: I_eff = 966 eV assumed in calculating critical energies and dE/dx.
Table of isotopes via WIKIPEDIA