Muon radiative energy loss (in 1.0E06 cm^2/g) in boron (B) with Z = 5, A = 10.81(7) (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 0.1897 0.0810 0.4744 0.7451 5. 0.2574 0.2021 0.5003 0.9598 10. 0.3142 0.3092 0.4848 1.1082 20. 0.3742 0.4270 0.4623 1.2635 50. 0.4569 0.5919 0.4378 1.4866 100. 0.5197 0.7147 0.4260 1.6604 200. 0.5788 0.8191 0.4201 1.8180 500. 0.6490 0.9338 0.4192 2.0020 1000. 0.6947 1.0050 0.4263 2.1259 2000. 0.7327 1.0558 0.4379 2.2265 5000. 0.7710 1.1012 0.4595 2.3316 10000. 0.7914 1.1226 0.4813 2.3953 20000. 0.8057 1.1362 0.5068 2.4487 50000. 0.8181 1.1467 0.5469 2.5117 100000. 0.8234 1.1511 0.5813 2.5558