b(E) × 10^{6} [cm^{2}g^{−1}] for

protactinium (Pa), Z = 91, A =[231.03588(2)]

E [GeV] b_{brems} b_{pair}  b_{nucl}  b_{tot}
2. 2.1226 0.3143 0.3591 2.7961
5. 2.9495 1.9739 0.3833 5.3067
10. 3.6252 3.2648 0.3759 7.2658
20. 4.3186 4.4493 0.3626 9.1305
50. 5.2249 6.2661 0.3478 11.8388
100. 5.8683 7.4621 0.3408 13.6712
200. 6.4542 8.5192 0.3375 15.3109
500. 7.1094 9.4846 0.3377 16.9317
1000. 7.5023 9.9943 0.3430 17.8396
2000. 7.8068 10.3609 0.3512 18.5189
5000. 8.0880 10.6668 0.3661 19.1210
10000. 8.2266 10.8077 0.3810 19.4153
20000. 8.3181 10.8997 0.3983 19.6161
50000. 8.3936 10.9676 0.4253 19.7866
100000. 8.4269 10.9962 0.4485 19.8716