Muon radiative energy loss (in 1.0E06 cm^2/g) in Liquid argon (Ar) with Z = 18, A = 39.948(1) (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 0.5769 0.2739 0.4243 1.2751 5. 0.7858 0.6717 0.4518 1.9093 10. 0.9557 0.9880 0.4410 2.3847 20. 1.1312 1.3207 0.4231 2.8750 50. 1.3641 1.7955 0.4033 3.5629 100. 1.5331 2.1233 0.3937 4.0501 200. 1.6910 2.4253 0.3890 4.5054 500. 1.8741 2.7149 0.3887 4.9777 1000. 1.9885 2.8744 0.3950 5.2579 2000. 2.0806 2.9923 0.4052 5.4781 5000. 2.1696 3.0924 0.4239 5.6859 10000. 2.2154 3.1395 0.4427 5.7976 20000. 2.2478 3.1693 0.4646 5.8817 50000. 2.2730 3.1935 0.4987 5.9652 100000. 2.2852 3.2033 0.5279 6.0165