The global  Caesium Iodide (Cesium Iodide) (CsI) market showed significant growth in 2020 and is expected to maintain a steady revenue CAGR during the forecast period. Caesium iodide, an ionic compound of caesium and iodine, is a major contributor to the growth of the market. It is widely used in X-ray image intensifier tubes, and its photocathodes are extremely efficient in extreme...