Applications of Liquid Scintillation Counting by Donald L. Horrocks

By Donald L. Horrocks

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However, in liquid scintillation counting one has to consider the total solution. There may still be valid reasons for adding a wavelength shifter. If there is a component of the scintillator solution which has a strong absorption band in the wavelength region of the emission of the primary solute, a secondary solute would shift the photon distribution to a region where the self-absorption is less. Therefore if the product of the flux of photons times the response of the phototube is increased, the result will be an increase in the scintillation yield.

J. Gale, J. Sd. Instrum. 1,99 (1968). CHAPTER III SCINTILLATOR SOLUTIONS The scintillator solution (excluding the sample) is composed of a solvent (or solvents) and a solute (or solutes). The solvent acts as a medium for absorbing the energy of the nuclear radiation and for dissolving the sample. The solute acts as an efficient source of photons after accepting energy from the excited solvent molecules. Solvents Most often the solvent is thought of as the vehicle for dissolving the sample and solutes, and it is often an overlooked fact that the initial excitations occur in the solvent molecules.

J. A. B. Gibson and H. J. Gale, J. Sd. Instrum. 1,99 (1968). CHAPTER III SCINTILLATOR SOLUTIONS The scintillator solution (excluding the sample) is composed of a solvent (or solvents) and a solute (or solutes). The solvent acts as a medium for absorbing the energy of the nuclear radiation and for dissolving the sample. The solute acts as an efficient source of photons after accepting energy from the excited solvent molecules. Solvents Most often the solvent is thought of as the vehicle for dissolving the sample and solutes, and it is often an overlooked fact that the initial excitations occur in the solvent molecules.

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