Muon radiative energy loss (in 1.0E06 cm^2/g) in Heavymet as in Rochester gamma stop with Z/A = 0.40915 (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 1.7173 0.4717 0.3712 2.5602 5. 2.3775 1.7925 0.3956 4.5656 10. 2.9158 2.8177 0.3886 6.1221 20. 3.4682 3.7813 0.3703 7.6197 50. 4.1916 5.2407 0.3589 9.7913 100. 4.7067 6.2075 0.3515 11.2656 200. 5.1774 7.0670 0.3479 12.5924 500. 5.7069 7.8569 0.3481 13.9120 1000. 6.0266 8.2764 0.3535 14.6565 2000. 6.2758 8.5794 0.3621 15.2172 5000. 6.5076 8.8330 0.3777 15.7183 10000. 6.6226 8.9503 0.3933 15.9662 20000. 6.6989 9.0268 0.4114 16.1371 50000. 6.7621 9.0841 0.4397 16.2858 100000. 6.7903 9.1077 0.4639 16.3619