Atomic and nuclear properties of lanthanum bromide (LaBr3)
QuantityValueUnits ValueUnits
<Z/A> 0.42787     
Specific gravity 5.290 g cm-3   
Mean excitation energy 454.5 eV   
Minimum ionization 1.313 MeV g-1cm2 6.944 MeV cm-1
Nuclear collision length 93.4 g cm-2 17.66 cm
Nuclear interaction length 156.4 g cm-2 29.57 cm
Pion collision length 118.1 g cm-2 22.33 cm
Pion interaction length 184.6 g cm-2 34.89 cm
Radiation length 9.95 g cm-2 1.881 cm
Critical energy 14.16 MeV (for e-) 13.71 MeV (for e+)
Molière radius 14.90 g cm-2 2.816 cm
Plasma energy ℏωp 43.35 eV   
Muon critical energy 237. GeV   
Composition:
Elem ZAtomic frac* Mass frac
La
 57
1.00
0.366875
Br
 35
3.00
0.633124
* calculated from mass fraction data

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: Ieff calculated using the ICRU37 algorithm given in Table 5.1