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Measurement of the fluorescence quantum yield of bis-MSB

  • [设施]:大亚湾实验
  • [期刊/会议名称]:Chinese Physics C
  • [摘要]:The fluorescence quantum yield of bis-MSB, a widely used liquid scintillator wavelength shifter, was measured to study the photon absorption and re-emission processes in a liquid scintillator. The re-emission process affects the photoelectron yield and distribution, especially in a large liquid scintillator detector, thus must be understood to optimize the liquid scintillator for good energy resolution and to precisely simulate the detector with Monte Carlo. In this study, solutions of different bis-MSB concentration were prepared for absorption and fluorescence emission measurements to cover a broad range of wavelengths. Harmane was used as a standard reference to obtain the absolution fluorescence quantum yield. For the first time we measured the fluorescence quantum yield of bis-MSB up to 430 nm as inputs required by Monte Carlo simulation, which is 0.926±0.053 at λex=350 nm.
  • [发表日期]:2015
  • [第一作者]:DING Xue-Feng
  • [第一作者单位]:Hubei Nuclear Solid Physics Key Laboratory
  • [通讯作者]:DING Xue-Feng
  • [通讯作者单位]:Hubei Nuclear Solid Physics Key Laboratory
  • [论文类型]:0
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