21. A photomultiplier tube is placed on the top of the aluminum casing covering each scintillator . 22. OSO 5 carried a CsI crystal scintillator . 23. When an ionizing particle passes into the scintillator material, atoms are ionized along a track. 24. The gamma rays were detected by sandwiching the water tanks between tanks filled with liquid scintillator . 25. Sodium iodide systems, as with all scintillator systems, are sensitive to changes in temperature. 26. Organic scintillators can be dissolved in an organic solvent to form either a liquid or plastic scintillator . 27. The TALE project also has a graded infill array of scintillator stations spaced 400m and 600m apart. 28. It then connects to the main Telescope Array scintillator array where the scintillator detectors are 1200m apart. 29. It then connects to the main Telescope Array scintillator array where the scintillator detectors are 1200m apart. 30. Bismuth germanate, Bi 4 Ge 3 O 12, ( BGO ) is used as a scintillator .
