Vidicon detectors blooming

Blooming limits the resolution obtainable with vidicon detectors. For example, if an atomic line with a 0.02 nm line width is observed through a polychromator with 0.83 nm/mm... 

However, the SIT vidicon is limited by blooming, lag, distortion, a small detection area, and high cost. As a result, the SIT vidicon will not replace other detectors such as photographic emulsions, photomultiplier tubes, and linear photodiode arrays. Instead, the SIT vidicon is complementary to the other spectroscopic detectors. Also, as with all detectors, spectroscopists using the SIT vidicon must be aware of its detection and imaging characteristics since these affect the detected spectra, sometimes in a subtle manner. 

An example of a solid state detector is the Reticon self-scanning photodiode array, which was specifically designed for spectroscopic applications [104]. These diode arrays contain 512 or 1024 silicon diode sensor elements on 25 jum centers corresponding to a density of 40 diodes mm" . Each diode is 2.5 mm high giving each element a slit-like geometry with a 100 1 aspect ratio. Beam registration problems do not apply to the diode array since the channel dimensions are defined by a photomask and hence the detector element size and position are completely reproducible. Solid state detectors do not suffer from lag [105] and althou they will bloom, the effect is much less severe than in a vidicon. 

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