Question

In which type of quenching, the radiation emitted by the isotope is not detected due to absorption of the radiation by the sample itself?

(a) Chemical quench

(b) Interference quench

(c) Colour quenching

(d) Self-absorption

This question was addressed to me during an internship interview.

I'm obligated to ask this question of Liquid Scintillation Counters in portion Radiochemical Techniques of Analytical Instrumentation

Answer 1

Right option is (d) Self-absorption

To explain I would say: In self-absorption, the radiation emitted by the isotope is not detected due to the absorption of the radiation by the sample itself. It may occur due to precipitates.