Study of absorption and re-emission processes in a ternary liquid scintillation system

• Published in: Chinese physics C Vol. 34; no. 11; pp. 1724 - 1728
• Main Author: 肖华林 李小波 郑东 曹俊 温良剑 王乃彦
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.11.2010; College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China%Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China%Analytical and Testing Center,Beijing Normal University,Beijing 100875,China
• Subjects: 中微子实验; 发射过程; 吸收波长; 波长转换器; 液体闪烁体; 液体闪烁探测器; 直链烷基苯; liquid scintillator; absorption and re-emission; fluorescence quantum yield
• ISSN: 1674-1137; 0254-3052; 2058-6132
• DOI: 10.1088/1674-1137/34/11/011

Liquid scintillators are widely used as the neutrino target in neutrino experiments.The absorption and emission of different components of a ternary liquid scintillator （Linear Alkyl Benzene （LAB） as the solvent,2,5-diphenyloxazole （PPO） as the fluor and p-bis-（o-methylstyryl）-benzene （bis-MSB） as wavelength shifter） are studied.It is shown that the absorption of this liquid scintillator is dominant by LAB and PPO at wavelengths less than 349 nm,and the absorption by bis-MSB becomes prevalent at the wavelength larger than 349 nm.The fluorescence quantum yields,which are the key parameters to model the absorption and re-emission processes in large liquid scintillation detectors,are measured.