title: The effect of vial type and cocktail quantity on tritium measurement in LSC.
abstract: The effect of sample vial type and cocktail quantity on tritium measurement in liquid scintillation counting is studied in this paper. With both high and low level tritium samples, glass vials allow higher counting rates than plastic vials do. We also present detailed analysis of the way to obtain the optimal counting condition by dispensing different quantity of cocktail into sample vials. Results indicate that the optimal counting condition has little relationship with tritium concentration in the sample. The main factor which influences the counting is the quantity of cocktail added into samples. Figure of merit is employed to access the results, which increases as the quantity of cocktail increasing. But when the ratio of cocktail and sample reaches 2.0, increase of ratio makes little contribution to the counts, and the disintegrations per minute comes nearly to be a constant.
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics (CAEP), Mianyang, Sichuan, China. zhilinchan@gmail.com
authors.forename: Chen
authors.initials: C
authors.lastname: Zhilin
authors.forename: Xing
authors.initials: X
authors.lastname: Shixiong
authors.forename: Wang
authors.initials: W
authors.lastname: Heyi
authors.forename: Chang
authors.initials: C
authors.lastname: Ruimin
authors.forename: Wu
authors.initials: W
authors.lastname: Guanyin
authors.forename: Zhou
authors.initials: Z
authors.lastname: Yinhang
mesh_terms: D016477:Artifacts; D004867:Equipment Design; D019544:Equipment Failure Analysis; D011829:Radiation Dosage; D015203:Reproducibility of Results; D012588:Scintillation Counting / Q000295:instrumentation*; D012680:Sensitivity and Specificity; D013048:Specimen Handling / Q000295:instrumentation*; D014316:Tritium / Q000032:analysis*
chemical_list: D014316:Tritium