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Abstract
Problems in alpha energy resolution and identification in liquid scintillation are noted and the advantages of using organic -phase-soluble extractants to incorporate alpha-emitting nuclides into the scintillator are discussed. The quenching effects of seven extractants are examined and are found to be in the order tributyl phosphate < di(2-ethylhexyl) -phosphoric acid = trioctylphosphine oxide < didecylamine sulfate = 1-nonyldecylamine sulfate < trioctylamine chloride < trioctylamine nitrate. Some general techniques for improving pulse height and resolution of a liquid scintillator are described.