Laser-stimulable transparent CsI:Na film for a high quality x-ray imaging sensor

Kano, Tsuyoshi; Takahashi, Tetsuhiko; Okajima, Kenichi; Umetani, Keiji; Ataka, Saburo; Yokouchi, Hisatake; Suzuki, Ryuichi
April 1986
Applied Physics Letters;4/28/1986, Vol. 48 Issue 17, p1117
Academic Journal
Transparent films, which can be stimulated by laser beams after x-ray irradiation, have been searched to improve the spatial resolution of digital x-ray imaging sensors. As a result, evaporated CsI:Na films are found to be efficiently laser stimulable around 77 K. The modulation transfer function (MTF) of the film is evaluated using a scanning Ga1-xAlxAs semiconductor laser. The high MTF value (57% at 2 1p/mm), strong x-ray absorption, and high stimulation efficiency of the film ensure a high quality sensor for digital radiography.


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