Multichannel analyser schematic

Figure C3.5.3. Schematic diagram of apparatus used for (a) IR pump-probe or vibrational echo spectroscopy by Payer and co-workers [50] and (b) IR-Raman spectroscopy by Dlott and co-workers [39]. Key OPA = optical parametric amplifier PEL = free-electron laser MOD = high speed optical modulator PMT = photomultiplier OMA = optical multichannel analyser.

Fig. 1.5. Schematic of a gamma-ray energy spectrometer for Doppler broadening studies. The signal from the detector pre-amp is processed by spectroscopy and biassed amplifiers (SA and BA respectively) before being recorded in the multichannel analyser (MCA).

Figure C3.1.5. Schematic diagram of an intensifier-gated optical multichannel analyser (OMA) detector. The detector consists of a microchannel plate (MCP) image intensifier followed by a 1024-channel Reticon photodiode array. Light dispersed across the semitransparent photocathode ejects photoelectrons. These are accelerated toward the entrance of the microchannels by the gate pulse. The photoelectrons collide with the channel walls to produce secondary electrons, which are accelerated in turn by the MCP bias voltage to produce further collisions and electron multiplication. Electrons leaving the microchannels are further accelerated by the phosphor bias voltage.

Fig. 3.4. Schematic diagram of experimental apparatus for LIBS. OMA optical multichannel analyser. After Anglos et al [107]. Reproduced by permission of Verlag Mayer Comp., Klosterneuburg and Vienna.

Fig. 15.10. Schematic diagram of an experimental set-up for measuring the density of absorbing species integrated over the path length L. The polychromator with optical multichannel analyser allows the simultaneous determination of several absorbing components...

Fig. 1. Schematic diagram of the present wave tank experiment OSA = second Optical Spectrum Analyser MOSA = Multichannel ("Stroboscopic") Optical Spectrum Analyser...

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