Atomic and nuclear properties of guanine (C5H5N5O)
QuantityValueUnits ValueUnits
<Z/A> 0.51612     
Specific gravity 1.580 g cm-3   
Mean excitation energy 75.0 eV   
Minimum ionization 1.832 MeV g-1cm2 2.894 MeV cm-1
Nuclear collision length 59.5 g cm-2 37.67 cm
Nuclear interaction length 86.1 g cm-2 54.50 cm
Pion collision length 86.9 g cm-2 54.98 cm
Pion interaction length 118.1 g cm-2 74.76 cm
Radiation length 39.80 g cm-2 25.19 cm
Critical energy 79.60 MeV (for e-) 77.45 MeV (for e+)
Molière radius 10.60 g cm-2 6.710 cm
Plasma energy ℏωp 26.02 eV   
Muon critical energy 1036. GeV   
Composition:
Elem ZAtomic frac* Mass frac
H
1
5.00
0.033346
C
6
5.00
0.397380
N
7
5.00
0.463407
O
8
1.00
0.105867
* 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