References in periodicals archive ?
At low proton dose of 2 [mu]Ahr, the experimental radioactivity yield recorded in the gamma ray spectroscopy system is 3.8073 [+ or -] 0.3737 GBq as shown in Table 1.
The second edition adds sections on airborne lidar for land surveys, airborne gamma ray spectroscopy, and interferometric synthetic aperture radar.
Both were also the first of their line equipped for both gamma ray spectroscopy (measuring uranium, potassium and thorium) and X-ray fluorescence spectroscopy (providing element-by-element analyses of silicon, aluminum, titanium, calcium, iron and other materials), clues to Venusian mineralogy.