1. Various radio-nuclides that decay by positron emission
Isotope
Half-life
Max positron energy (MeV)
11C
20.1 min
0.96
13N
9.96 min
1.19
15O
123 s
1.72
18F
110 min
0.64
64Cu
12.6 h
0.58
68Ga
68.3 min
1.9
76Br
16.1 h
3.7
82Rb
78 s
3.35
124I
4.18 days
1.5
Ragnar Hellborg
Lund University

2. Nuclear reactions for production of 18F:
*) 18Ne decays to 18F with a half-life of 1.67 s
Reaction
Target
Threshold (MeV)
Energy of max cross section (MeV)
19F(γ,n)18F
Teflon
10.4
23Na(γ,αn )18F
NaOH or NaSO4 21
18O(p,n)18F
H218O or O2
2.4 5
20Ne(d,α)18F
0.1%F2 in Ne - 6
16O(3He,n)18Ne*
H2O 8
16O(α,d)18F 18
16O(t,n)18F
Li2CO3
3.3
23Na(p,αx)18F Na
18.7 y