Table 1.
Radioisotope product ratios of 68Ga, 67Ga, and 66Ga from 1 hour irradiations at various energies.
| Product | t1/2 | Reaction(s) | Q value (MeV) | Ratio of Product to 68Ga at EoB for 7 MeV | Ratio of Product to 66Ga 14 h after EoB at 11 MeV* | Ratio of Product to 66Ga 16 h after EoB at 13 MeV | Ratio of Product to 66Ga 16 h after 16 MeV EoB |
|---|---|---|---|---|---|---|---|
| 64Ga | 2.6 m | 64Zn(p,n) | −7.95 | -- | -- | -- | -- |
| 65Zn | 243.7 d | 66Zn(p,2n+β); 66Zn(p,pn) | −15.10; −11.06 | -- | -- | -- | 9.5x10−4 |
| 66Ga | 9.5 h | 66Zn(p,n); 67Zn(p,2n) | −5.96; −13.01 | 1.5x10−2 | 1.0 | 1.0 | 1.0 |
| 67Ga | 3.3 d | 67Zn(p,n); 68Zn(p,2n) | −1.78; −13.01 | 3.8x10−3 | 6.7x10−2 | 7.0x10−2 | 1.9x10−1 |
| 68Ga | 68 m | 68Zn(p,n) | −3.70 | 1.0 | 6.0x10−3 | 3.3x10−3 | 5.1x10−4 |
| 70Ga | 21.1 m | 70Zn(p,n) | −1.44 | -- | -- | -- | -- |
*
Thin target (11 → 6 MeV)