Precise Measurement of Refractive Index of Liquid Xenon Scintillator

液氙闪烁体折射率的精确测量

• 批准号: 17540240
• 负责人: NAKAMURA Shogo
• 金额: $ 2.18万
• 依托单位: Yokohama National University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17540240/
• 关键词: liquid xenon; refractive index; scintillator; vacuum ultraviolet; excimer lamp; wavelength dependence; density dependence; precise measurement; 蒸気圧曲線; サリチル酸ナトリウム; エキシマ光源

We have measured refractive index of liquid xenon scintillator for scintillation light with good precision of less than 0.01 by using originally developed apparatus. The main results are the following :- We have successfully obtained the refractive index of liquid xenon in equilibrium with its gas phase at 10^5 Pa with a least error of 0.007. The value of the index varies from 1.38 to 1.71 as a function of wavelength from visible to vacuum-ultraviolet region. At visible region, the measured values are consistent with those by previous high-precision experiment. The wavelength dependence of the index is followed by well-known Sellmeier dispersion equation.- At vacuum-ultraviolet region, we measured the index also at 0.9x10^5 and 1.2x10^5 Pa similarly in equilibrium with its gas to observe slight change of the index. We found out that the density dependence is well explained by Lorentz-Lorenz relation.- The obtained value of the index is significantly different with any values of previou … More sly studies at vacuum ultraviolet region. We discuss the reasons of the difference and pointed out that the possible cause of errors in the previous experiments. We have confirmed the claimed high precision of our experiment based on additional calibration works.- The progress and the results of the study have been reported at various academic meetings as well as in master's theses. A part of the results has been referred in an international book on noble gas detectors.We have pointed out that the refractive index is important quantity to calculate Rayleigh scattering length in xenon liquid, together with scintillation spectrum which is still not well known yet. In addition, we have revealed a new problem involved in phase transition of xenon as a by-product. In addition, we have revealed a new problem involved in phase transition of xenon as a by-product. The results of the study indicate that the boiling point of xenon might be about 1 K higher than known value at a pressure. This discrepancy is negligibly small enough for the study of the refractive index, but it is important and should be resolved by future studies for various applications of liquid xenon. Less

我们用自行研制的仪器测量了液体氙闪烁体在闪烁光下的折射率，精度小于0.01。主要结果如下：-我们成功地得到了液相氙在10^5 Pa气相平衡时的折射率，最小误差为0.007。从可见光到真空紫外波段，该指数随波长的变化范围为1.38 ~ 1.71。在可见光区域，测量值与以往高精度实验结果基本一致。折射率与波长的关系遵循著名的塞尔迈耶色散方程。在真空紫外区，我们也测量了在0.9x10^5和1.2x10^5 Pa与气体相似的平衡状态下的指数，观察到指数的轻微变化。我们发现密度依赖性可以用洛伦兹-洛伦兹关系很好地解释。-所得的指数值与以往的任何值都有显著差异。讨论了产生差异的原因，并指出了以往实验中出现误差的可能原因。基于额外的校准工作，我们已经证实了我们的实验所声称的高精度。-研究的进展和结果已在各种学术会议和硕士论文中报告。部分研究结果已被收录在一本关于惰性气体探测器的国际书籍中。我们指出，折射率是计算氙液体中瑞利散射长度的重要量，而闪烁谱是目前尚不清楚的。此外，我们还揭示了副产物氙相变的一个新问题。此外，我们还揭示了副产物氙相变的一个新问题。研究结果表明，在一定压力下，氙的沸点可能比已知沸点高1 K左右。对于折射率的研究来说，这种差异是可以忽略不计的，但它是重要的，应该在未来对液态氙的各种应用的研究中加以解决。少

项目成果

キセノンの蒸気圧曲線の測定における誤差の評価

氙蒸气压曲线测量误差的评定

• 发表时间: 2007
• 期刊: 横浜国立大学工学部知能物理工学科卒業論文
• 作者: Y.Kikukawa;H.Suzuki;浦山 健太
• 通讯作者: 浦山 健太

キセノンシンチレータの発光スペクトルの研究

氙闪烁体发射光谱的研究

• 发表时间: 2007
• 期刊: 横浜国立大学大学院工学府物理情報工学専攻修士論文
• 作者: Yoshio Kikukawa;Masaya Kohda;Junichiro Yasuda;長瀬 達洋
• 通讯作者: 長瀬 達洋

Estimation of error in measurement of the vapor pressure curve of xenon

氙蒸气压曲线测量误差的估算

• 发表时间: 2007
• 期刊: Graduation thesis (Yokohama National University)
• 作者: E.Shintani;S.Aoki;N.Ishizuka;K.Kanaya;Y.Kikukawa;Y.Kuramashi;M.Okawa;A.Ukawa;T.Yoshie;URAYAMA Kenta
• 通讯作者: URAYAMA Kenta

真空紫外光検出のための蛍光板の製作

真空紫外光检测用荧光屏的制作

• 发表时间: 2007
• 期刊: 横浜国立大学工学部知能物理工学科卒業論文
• 作者: Y.Kikukawa;H.Suzuki;D. Suematsu;佐藤 友厚
• 通讯作者: 佐藤 友厚

A study on emission spectrum of xenon scintillator

氙闪烁体发射光谱的研究

• 发表时间: 2007
• 期刊: Master's thesis (Yokohama National University)
• 作者: Yoshio Kikukawa;Hiroshi Suzuki;NAGASE Tatsuhiro
• 通讯作者: NAGASE Tatsuhiro