Photostimulable luminescence (PSL) is described as which of the following?

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Multiple Choice

Photostimulable luminescence (PSL) is described as which of the following?

Photostimulable luminescence is the light emitted when stored energy in a phosphor is released during readout. The stored energy sits in traps after X-ray exposure; when stimulated, electrons are excited and then relax back to lower energy states, releasing photons in the process. This emission is characteristic blue or bluish‑purple for common storage phosphors like BaFBr:Eu2+. So the description of light from electrons transitioning from higher to lower energy states during readout captures the essential PSL process. The other options describe emission during exposure, a green color, or infrared, which don’t fit how PSL works.

Photostimulable luminescence is the light emitted when stored energy in a phosphor is released during readout. The stored energy sits in traps after X-ray exposure; when stimulated, electrons are excited and then relax back to lower energy states, releasing photons in the process. This emission is characteristic blue or bluish‑purple for common storage phosphors like BaFBr:Eu2+. So the description of light from electrons transitioning from higher to lower energy states during readout captures the essential PSL process. The other options describe emission during exposure, a green color, or infrared, which don’t fit how PSL works.

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