Muon radiative energy loss (in 1.0E06 cm^2/g) in Ruthenium with Z = 44, A = 101.07(2) (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 1.2375 0.5252 0.3888 2.1515 5. 1.7016 1.4423 0.4155 3.5593 10. 2.0787 2.1541 0.3971 4.6299 20. 2.4657 2.8515 0.3862 5.7034 50. 2.9745 3.8874 0.3749 7.2368 100. 3.3385 4.5819 0.3668 8.2872 200. 3.6737 5.2061 0.3629 9.2427 500. 4.0546 5.7869 0.3629 10.2044 1000. 4.2873 6.0987 0.3686 10.7546 2000. 4.4707 6.3257 0.3777 11.1740 5000. 4.6435 6.5166 0.3943 11.5544 10000. 4.7302 6.6055 0.4110 11.7467 20000. 4.7884 6.6634 0.4303 11.8821 50000. 4.8368 6.7071 0.4604 12.0044 100000. 4.8587 6.7255 0.4861 12.0704