Muon radiative energy loss (in 1.0E06 cm^2/g) in Cesium iodide (CsI) with Z/A = 0.41569 (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 1.4134 0.5375 0.3796 2.3305 5. 1.9495 1.6050 0.4055 3.9599 10. 2.3858 2.4324 0.3974 5.2156 20. 2.8335 3.2292 0.3777 6.4404 50. 3.4210 4.4217 0.3667 8.2095 100. 3.8405 5.2170 0.3590 9.4165 200. 4.2255 5.9284 0.3553 10.5092 500. 4.6612 6.5864 0.3554 11.6029 1000. 4.9258 6.9379 0.3610 12.2247 2000. 5.1335 7.1929 0.3697 12.6961 5000. 5.3280 7.4069 0.3859 13.1208 10000. 5.4251 7.5063 0.4019 13.3334 20000. 5.4900 7.5712 0.4207 13.4818 50000. 5.5439 7.6197 0.4498 13.6133 100000. 5.5681 7.6400 0.4746 13.6828