Element | Reaction | Half-life (min) | Gamma (KeV) | Activity* (Number of disintegration/s) | Decay const. λ | Natural abundance % |
N14 | N14(n, 2n)N13 | 10 | 511 | 6.3 | 0.0693 | 99.63 |
F19 | F19(n, 2n)F18 | 110 | 511 | 5906.52 | 0.0063 | 100 |
Cl35 | Cl35(n, 2n)Cl34 | 32.2 | 511, 145, 1175.8 | 53.704 | 0.02153 | 43 |
Sc45 | Sc45(n, 2n)Sc44 | 235.2 | 511, 1157, 1499.63 | 269,787.43 | 0.002947 | 100 |
Cr50 | Cr50(n, 2n)Cr49 | 42 | 511, 97.71, 63.1 | 20,632.8 | 0.016504 | 91.68 |
Fe56 | Fe56(n, 2n)Fe53 | 8.5 | 511, 377.2 | 35.73 | 0.081547 | 86 |
Ni58 | Ni58(n, 2n)Ni57 | 2160 | 511, 127.7, 1378.4 | 110.468 | 0.000321 | 100 |
Co59 | Co59(n, 2n)Co58 | 102,240 | 511, 810.73, 863.94 | 57.049 | 678 × 10−8 | 0.5 |
Cu63 | Cu63(n, 2n)Cu62 | 9.8 | 511, 675.2, 1129.1 | 5.597 | 0.07073 | 8 |
Zn64 | Zn64(n, 2n)Zn63 | 38.3 | 511, 670.2, 962.24 | 374.532 | 0.018098 | 60 |
Ga69 | Ga69(n, 2n)Ga68 | 68 | 511, 1077.1, 1884.5 | 111,907.8 | 0.010193 | 20.7 |
Ge70 | Ge70(n, 2n)Ge69 | 2214 | 511, 574, 1002, 1349, 1528, 1576 | 322.702 | 0.000313 | 91.68 |
Rb85 | Rb85(n, 2n)Rb84 | 20 | 511, 881.48, 1015.85, 1897.35 | 165.486 | 0.03466 | 72.17 |