b(E) × 10^{6} [cm^{2}g^{−1}] for

neptunium (Np), Z = 93, A =[237.04817(2)]

E [GeV] b_{brems} b_{pair}  b_{nucl}  b_{tot}
2. 2.1548 0.2886 0.3582 2.8016
5. 2.9952 1.9755 0.3823 5.3530
10. 3.6821 3.2882 0.3749 7.3452
20. 4.3871 4.4900 0.3617 9.2389
50. 5.3085 6.3357 0.3469 11.9911
100. 5.9623 7.5502 0.3400 13.8525
200. 6.5575 8.6231 0.3367 15.5173
500. 7.2229 9.6023 0.3369 17.1622
1000. 7.6217 10.1192 0.3421 18.0830
2000. 7.9306 10.4908 0.3503 18.7717
5000. 8.2157 10.8008 0.3652 19.3817
10000. 8.3561 10.9435 0.3801 19.6797
20000. 8.4488 11.0366 0.3973 19.8827
50000. 8.5316 11.1055 0.4243 20.0613
100000. 8.5590 11.1343 0.4473 20.1406