Abstract
A new design for a prism-based optoelectronic refractometer proposed earlier has been investigated. Experimental results are found to be in close agreement with theoretical calculations. For a given refractive index of the prism material, the divergence of the incident conical beam and angles of the prism determine the range of refractive index of the ambient over which the refractometer remains highly sensitive. Incident conical beams of higher divergences are found to enlarge this range. This refractometer is more robust and user-friendly than other such refractometers reported in the literature. Such a device can be useful for on-line measurements of refractive indices in process control systems.
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