A double sodium iodide (thallium) crystal gamma ray detector.
D004864:Equipment and Supplies; D005720:Gamma Rays; D011835:Radiation Protection / Q000600:supply & distribution*; D012974:Sodium Iodide; D013793:Thallium
D013793:Thallium; D012974:Sodium Iodide
RADIATION PROTECTION/equipment and supplies