48 5. Production of Radionuclides
Table5.1. Characteristics of commonly used radionuclides.
g-ray Common
Physical Mode of g-ray energy* abundance production
Nuclide half-life delay (%) (MeV) (%) method
(^31) H 12.3 yr b−(100) — — (^6) Li(n,a) (^3) H
(^116) C 20.4 min b+(100) 0.511 200 10 B(d, n) (^11) C
(annihilation)^14 N(p,a)^11 C
(^137) N10minb+(100) 0.511 200 12 C(d, n) (^13) N
(annihilation)^16 O(p,a)^13 N
(^13) C(p, n) (^13) N
(^146) C 5730 yr b−(100) — — (^14) N(n, p) (^14) C
(^158) O 2 min b+(100) 0.511 200 14 N(d, n) (^15) O
(annihilation)^15 N(p, n)^15 O
(^189) F 110 min b+(97) 0.511 194 18 O(p, n) (^18) F
EC (3) (annihilation)
(^3215) P 4.3 day b−(100) — — (^32) S(n, p) (^32) P
(^5727) Co 271 days EC (100) 0.014 9 56 Fe(d, n) (^57) Co
0.122 86
0.136 11
(^6731) Ga 78 hr EC (100) 0.093 40 68 Zn(p, 2n) (^67) Ga
0.184 20
0.300 17
0.393 5
(^6831) Ga 68 min b+(89) 0.511 178 68 Zn(p, n) (^68) Ga
EC (11) (annihilation)
3782 Rb 75 s b+(95) 0.511^19098 Mo^82 Sr
EC(5) 0.777 13.4 ↓25.6 d
(^82) Rb
3882 Sr 25.6 days EC (100) — —^98 Mo^82 Sr
(^9942) Mo 66 hr b−(100) 0.181 6 98 Mo(n,g) (^99) Mo
0.740 12 235 U(n,f)^99 Mo
0.780 4
99m 43 Tc 6.0 hr IT (100) 0.140 90 99 Mo 99mTc
(^11149) ln 2.8 days EC (100) 0.171 90 111 Cd(p, n) (^111) ln
0.245 94
(^12353) I 13.2 hr EC (100) 0.159 83 121 Sb(a, 2n) (^123) I
(^127) I(p, 5n) (^123) Xe
↓2.1 hr
(^123) I
(^124) Xe(p, 2n) (^123) Cs
↓5.9 min
(^123) Xe
↓2.1 hr
(^123) I
(^12453) I 4.2 days b+(23) 511 46 124 Te(p, n) (^124) I
EC (77) 603 61
(^12553) I 60 days EC (100) 0.035 7 124 Xe(n,g) (^125) Xe
X-ray 140 125 Xe^125 I
(0.027–0.032)
(^13153) I 8.0 days b−(100) 0.284 6 130 Te(n,g) (^131) Te
0.364 81 235 U(n, f)^131 Te
0.637 7 131 Te^131 I
(^235) U(n, f) (^131) I
b−→
25min
EC
hr17→
b→−
67 h
⎯spallation⎯⎯⎯→
spallation⎯⎯⎯→⎯