b(E) × 10^{6} [cm^{2}g^{−1}] for

actinium (Ac), Z = 89, A =[227.02775(2)]

E [GeV] b_{brems} b_{pair}  b_{nucl}  b_{tot}
2. 2.0701 0.3360 0.3597 2.7659
5. 2.8760 1.9537 0.3840 5.2137
10. 3.5344 3.2116 0.3765 7.1225
20. 4.2101 4.3685 0.3632 8.9417
50. 5.0935 6.1406 0.3484 11.5824
100. 5.7208 7.3078 0.3413 13.3699
200. 6.2921 8.3400 0.3381 14.9702
500. 6.9315 9.2830 0.3383 16.5527
1000. 7.3151 9.7812 0.3435 17.4398
2000. 7.6126 10.1396 0.3517 18.1039
5000. 7.8874 10.4388 0.3667 18.6930
10000. 8.0230 10.5766 0.3817 18.9813
20000. 8.1125 10.6666 0.3990 19.1781
50000. 8.1864 10.7332 0.4261 19.3457
100000. 8.2191 10.7609 0.4493 19.4292