Table 3. Number of Particles Generated per Isotope.
| isotope | NA (%)a | σ (barn) | NPb | position to damage cancer-cell nuclei | NPnormc | NPRBEd | |
|---|---|---|---|---|---|---|---|
| 157Gd | 15.7 | 254000 | 5.0 ACK electrons +0.69 IC electrons +1.8 γ-rays = 7.49 particles | Inside (ACK and IC electrons and γ-rays) and outside (γ-rays) cancer cell | 390.0 | 478.0 (sum of 157Gd + 155Gd) | 478.0 (sum of 157Gd + 155Gd) |
| 155Gd | 14.8 | 60700 | 5.0 ACK electrons +0.69 IC electrons +1.8 γ-rays = 7.49 particles | Inside (ACK and IC electrons and γ-rays) and outside (γ-rays) cancer cell | 88.0 | ||
| 10B | 19.9 | 3840 | 1.0 α + 1.0 7Li = 2.0 particles | Only inside cancer cell | 2.0 | 40.0 | |
a
NA = natural abundance.
b
NP = Number of particles generated per isotope.
c
NPnorm = Number of particles linearly normalized with respect to σ and NA of 10B.
d
NPRBE = RBE weighting factor-weighted NPnorm (RBE weighting factor: γ-ray = electron = 1.0 and α-particle = 7Li = 20.0).25