【摘要】 <正> 大液体闪烁计数器在核物理研究中所以应用很广,主要是由于它具有探测效率高,价格便宜和加工方便等优点。通常人们用苯、甲苯、二甲苯等作液闪溶剂。尽管它们的输出脉冲幅度大,但其挥发性较大、腐蚀性较强、有一定毒性、闪点较低,用于大体积液体闪烁测量时成本也较高。更多还原

【Abstract】 Kerosine has been examined as scintillator solvent. By measuring the relative output pulse amplitude and detection efficiency as a function of PPO, POPOP and naphthalene concentrations we have come to the conclusion that deoxygenated kerosine containing 4.0g/l PPO, 0.03g/l POPOP and 60.0g/l naphthalene is an efficient liquid scintillator. Its light output and detection efficiency relative to toluene containing 4.0g/l TP, 0.4g/l POPOP are 45% and 93% respectively. Its refractive index and emission spectrum were also measured: n = 1.4442, λ=423nm, m=415nm.更多还原