Silicon intensified target

The spectral region of interest is then detected and processed by means of an optical multichannel analyzer (EG G-PARC model 1215, OMA). The OMA detector SIT (silicon intensified target), EG G-PARC model 1254 has been used. It is operated by the detector controller, EG G-PARC, model 1216, which performs the signal digitization as well. The acquired spectra are displayed in real time on a TV display and on the OMA console. The data storage and processing are also performed by that console which has a 28K of 16 bit core memory and a floppy disk for permanent storage. 

The first detectors to be used in OMA systems were standard TV image tubes. These were silicon vidicons or the more sensitive Silicon Intensified Target (SIT) detectors, which both employed silicon targets to convert optical information into electronic form. More recently, the use of solid state detectors in the form of a diode array (Reticon) has been found to have some advantages over the vidicons and SIT tubes. Current developments in the field of charge coupled devices (CCD) will probably soon provide an even better multielement detector for use in OMA systems. 

Fig. 15.1. Schematic representation of amyloid fibrils revealed by total internal reflection fluorescence microscopy, (a) The penetration depth of the evanescent field formed by the total internal reflection of laser light is 150nm for a laser light at 455 nm, so only amyloid fibrils lying parallel to the slide glass surface were observed. (b) Schematic diagram of a prism-type TIRFM system on an inverted microscope. ISIT image-intensifier-coupled silicone intensified target camera, CCD charge-coupled device camera...

The performance characteristics of four optoelectronic image detectors (OIDs) are discussed. The detectors discussed are the silicon intensified target vidicon (SIT), the intensified SIT, the intensified silicon photodiode array detector (ISPD), and the self-scanned photodiode array detector. The main objective of the paper is to provide research workers interested in applying OIDs to a particular application with comparative performance information so that the best detector for a particular application may be selected. 

Silicon Intensified Target (SIT) Vidicon and Intensified SIT (ISIT)... 

In this paper we briefly discuss the operation of the silicon intensified target (SIT) vidicon, describing what we conclude to be the spectroscopically most important properties of the detector. We provide experimental evaluation of the SIT vidicon characteristics including two-dimensional image fidelity channel-to-channel and pixel-to-pixel response as a function of position on the detector and temporal resolution and gating. We illustrate how these unique properties enhance our ability to make spectroscopic measurements while at the same time impose limitations on the use of the SIT vidicon. 

The silicon intensified target (SIT) vidicon has a number of unique properties which make it a valuable detector for atomic spectroscopy. The SIT vidicon provides two-dimensional photoelectric detection with high sensitivity and rapid signal readout. Time resolution can be obtained in a time-resolved (real time) mode on the millisecond scale and in a time-gated (equivalent time) mode on the submicrosecond scale. 

Figure 1. Illustration of the silicon-intensified target (SIT) vidicon. (Reproduced with permission from Ref 8. Copyright 1978, Princeton Applied Research Corporation.)...

OLESIK AND WALTERS Silicon-Intensified Target Vidicon Detector... 

Limited comparisons are also drawn for silicon intensified target vidicons (SIT) and intensified self-scanning photodiode array detectors (ISPD). 

SPD) and draw comparisons to PMT arrays as used in classical pol-ychromators. To a lesser extent, some comparisons are drawn with silicon intensified target vidicons (SIT) and intensified selfcanning photodiode array detectors (ISPD). A similar evaluation of the SPD for spectrophotometry and spectrofluorometry was recently published elsewhere (41). 

The 355-nm pulse is used to excite the sample, and the continuum segments (probe pulses are used to monitor the resulting AA. The probe pulses, after passing through the sample are then focused into a monochromator which has mounted to its output a two dimensional silicon intensified target photodiode array connected to a computer. With the monochromator set at 430 nm, Sundstrom et. al. (24) directly measured the population growth rate of the lowest triplet state of acridine, which when calculated from the data illustrated in Figure 4 is 3 x 10 0 sec l. 

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