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

中国物理C, 2010, 34(11): 1724-1728.

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China

2.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

3.Analytical and Testing Center,Beijing Normal University,Beijing 100875,China

4.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

5.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

6.College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China

基金项目: Nation Natural Science Foundation of China(211202037)

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

XIAO Hua-Lin ^1, , LI Xiao-Bo ^2, , ZHENG Dong ^3, , CAO Jun ^4, , WEN Liang-Jian ^5, , WANG Nai-Yan ^6,

1.College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China

2.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

3.Analytical and Testing Center,Beijing Normal University,Beijing 100875,China

4.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

5.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

6.College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China

Keywords： liquid scintillator

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.

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

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