[Energy spectra of backscattered gamma-rays].
D001417:Background Radiation; D002588:Cesium Radioisotopes; D003035:Cobalt; D005720:Gamma Rays; D007495:Iridium; D011839:Radiation, Ionizing; D011868:Radioisotopes; D012542:Scattering, Radiation; D012588:Scintillation Counting / Q000379:methods
D002588:Cesium Radioisotopes; D011868:Radioisotopes; D003035:Cobalt; D007495:Iridium