Muon radiative energy loss (in 1.0E06 cm^2/g) in thallium (Tl) with Z = 81, A = 204.3833(2) (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 1.9263 0.4193 0.3634 2.7090 5. 2.6725 1.9164 0.3880 4.9768 10. 3.2816 3.0789 0.3804 6.7409 20. 3.9067 4.1579 0.3669 8.4315 50. 4.7244 5.8026 0.3518 10.8788 100. 5.3056 6.8883 0.3447 12.5386 200. 5.8358 7.8504 0.3413 14.0276 500. 6.4303 8.7313 0.3415 15.5032 1000. 6.7879 9.1976 0.3468 16.3324 2000. 7.0657 9.5337 0.3552 16.9546 5000. 7.3232 9.8145 0.3704 17.5080 10000. 7.4504 9.9440 0.3855 17.7799 20000. 7.5346 10.0285 0.4031 17.9662 50000. 7.6042 10.0914 0.4305 18.1261 100000. 7.6351 10.1176 0.4540 18.2066