Atomic and nuclear properties of ammonia (NH3)
QuantityValueUnits ValueUnits
<Z/A> 0.59719     
Specific gravity (20° C, 1 atm) 8.260E-04 g cm-3   
Mean excitation energy 53.7 eV   
Minimum ionization 2.265 MeV g-1cm2 1.871E-03 MeV cm-1
Nuclear collision length 56.8 g cm-2 6.876E+04 cm
Nuclear interaction length 79.5 g cm-2 9.620E+04 cm
Pion collision length 84.5 g cm-2 1.023E+05 cm
Pion interaction length 111.5 g cm-2 1.350E+05 cm
Radiation length 40.87 g cm-2 4.948E+04 cm
Critical energy 121.70 MeV (for e-) 119.12 MeV (for e+)
Molière radius 7.12 g cm-2 8622. cm
Plasma energy ℏωp 0.64 eV   
Muon critical energy 1469. GeV   
Index of refraction (0° C, 1 atm, Na D) 376. (n-1)x106     
Composition:
Elem ZAtomic frac* Mass frac
H
1
3.00
0.177547
N
7
1.00
0.822453
* 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