Application segmentation of the Astatine-211 market delineates three principal demand drivers: targeted alpha‑particle therapy, radiochemical research, and industrial tracing. In the therapeutic arena, Astatine‑211’s high linear energy transfer and short half‑life enable precise tumor cell ablation, accounting for roughly 55 % of total market revenue. The research segment, representing about 30 % of the market, encompasses synthesis of novel radiopharmaceuticals, decay‑scheme studies, and pre‑clinical validation, where the isotope’s unique decay properties provide a critical testbed for next‑generation oncology agents. Industrial applications, though smaller at an estimated 15 %, include use as a tracer in material‑science investigations and micro‑fabrication processes, leveraging its detectable alpha emissions for non‑invasive diagnostics. Collectively, these application categories shape the overall Astatine‑211 market size, with the therapeutic share driving capital investment and the ancillary segments sustaining a diversified revenue base. This analysis reflects current Astatine‑211 segmentation trends across its primary use‑cases.