Atomic and nuclear properties of materials:
Testes (ICRP)
QuantityValueUnits ValueUnits
<Z/A> 0.55108     
Density 1.04 g cm-3   
Mean excitation energy 75.0 eV   
Minimum ionization 1.976 MeV g-1cm2 2.056 MeV cm-1
Nuclear collision length 58.6 g cm-2 56.33 cm
Nuclear interaction length 83.5 g cm-2 80.33 cm
Pion collision length 86.1 g cm-2 82.75 cm
Pion interaction length 115.4 g cm-2 111.0 cm
Radiation length 36.47 g cm-2 35.07 cm
Critical energy 78.91 MeV (for e-) 76.81 MeV (for e+)
Molière radius 9.80 g cm-2 9.424 cm
Plasma energy 21.82 eV   
Muon critical energy 1034. GeV   
Composition:
Elem ZAtomic frac* Mass frac*
H
1
1.00
0.104166
C
6
0.07
0.092270
N
7
0.01
0.019940
O
8
0.47
0.773884
Na
 11
0.00
0.002260
Mg
 12
0.00
0.000110
P
15
0.00
0.001250
S
16
0.00
0.001460
Cl
 17
0.00
0.002440
K
19
0.00
0.002080
Ca
 20
0.00
0.000100
Fe
 26
0.00
0.000020
Zn
 30
0.00
0.000020
* calculated from mass fraction data.

Explanation of some entries
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