Atomic and nuclear properties of UM rock for Doug
QuantityValueUnits ValueUnits
<Z/A> 0.49407     
Specific gravity 2.700 g cm-3   
Mean excitation energy 152.7 eV   
Minimum ionization 1.656 MeV g-1cm2 4.471 MeV cm-1
Nuclear collision length 66.7 g cm-2 24.71 cm
Nuclear interaction length 100.8 g cm-2 37.34 cm
Pion collision length 93.4 g cm-2 34.58 cm
Pion interaction length 131.8 g cm-2 48.80 cm
Radiation length 24.64 g cm-2 9.126 cm
Critical energy 44.87 MeV (for e-) 43.59 MeV (for e+)
Molière radius 11.65 g cm-2 4.313 cm
Plasma energy ℏωp 33.28 eV   
Muon critical energy 641. GeV   
Composition:
Elem ZAtomic frac* Mass frac
Si
 14
0.18
0.238952
Ti
 22
0.00
0.004966
Al
 13
0.07
0.086130
Fe
 26
0.03
0.079602
Mn
 25
0.00
0.002088
Mg
 12
0.04
0.047684
Ca
 20
0.03
0.058365
Na
 11
0.03
0.027107
K
19
0.00
0.001160
P
15
0.00
0.001133
O
8
0.61
0.452813
* 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 Table 5.1 algorithm for liquids and solids