抄録
An Imaging Plate (IP) has been developed as an image storing medium for use in medical X-ray diagnosis. We confirmed the IP to be a good medium not only for X-ray radiation but also for vacuum ultraviolet (VUV) and ultraviolet (UV) radiation. We found that the photo-stimulated luminescence (PSL) intensity showed a linear response to UV photon numbers in the range of 104.5, and that showed saturation as the irradiated photon number increased. The sensitivity curve of the IP showed a peak at the wavelength of 200 nm and decreased at longer wavelengths. When the wavelength of the irradiated UV radiation was longer than 320 nm, the PSL intensity was too low to detect with our system. This means that the cut-off wavelength of the sensitivity was measured as 310 nm.
