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The Jiangmen Underground Neutrino Observatory (JUNO), a 20 kton multi-purpose underground liquid scintillator detector designed to determine the neutrino mass hierarchy, and measure the neutrino oscillation parameters. The excellent energy…

We report the measurements of the densities of linear alkylbenzene at three temperatures over 4 to 23 Celsius degree with pressures up to 10 MPa. The measurements have been analysed to yield the isobaric thermal expansion coefficients and,…

仪器与探测器 · 物理学 2015-04-07 Xiang Zhou , Qingmin Zhang , Qian Liu , Zhenyu Zhang , Yayun Ding , Li Zhou , Jun Cao

This paper presents measurements of the scintillation light yield and time profile for a number of concentration of water-based liquid scintillator, formulated from linear alkylbenzene (LAB) and 2,5-diphenyloxazole (PPO). We find that the…

仪器与探测器 · 物理学 2020-11-04 J. Caravaca , B. J. Land , M. Yeh , G. D. Orebi Gann

The proton light yield of liquid scintillators is an important property in the context of their use in large-scale neutrino experiments, with direct implications for neutrino-proton scattering measurements and the discrimination of fast…

仪器与探测器 · 物理学 2023-03-01 E. J. Callaghan , B. L. Goldblum , J. A. Brown , T. A. Laplace , J. J. Manfredi , M. Yeh , G. D. Orebi Gann

The attenuation length measuring device was constructed by using oscilloscope and LabVIEW for signal acquisition and processing. The performance of the device has been tested with a variety of ways, the test results show that the set-up has…

仪器与探测器 · 物理学 2015-06-15 L. Gao , BX. Yu , YY. Ding , L. Zhou , LJ. Wen , YG. Xie , ZG. Wang , X. Cai , XL. Sun , J. Fang , Z. Xue , AW. Zhang , QW. LÜ , LJ. Sun , YS. Ge , YB. Liu , SL. Niu , T. Hu , J. Cao , JG. LÜ

The optical scattering coefficient of a dilute, well solubilised eumelanin solution has been accurately measured as a function of incident wavelength, and found to contribute less than 6% of the total optical attenuation between 210 and…

生物物理 · 物理学 2009-11-11 Jennifer Riesz , Joel Gilmore , Paul Meredith

A relativistic analysis of the polarization properties of light elastically scattered by atomic hydrogen is performed, based on the Dirac equation and second order perturbation theory. The relativistic atomic states used for the…

The propagation velocity of scintillation light in liquid argon $v_{g}$ at $\lambda \sim 128$~nm wavelength, has been measured for the first time in a dedicated experimental setup at CERN.\\ The obtained result $\frac{1}{v_{g}} = 7.46 \pm…

仪器与探测器 · 物理学 2021-07-30 M. Babicz , S. Bordoni , A. Fava , U. Kose , M. Nessi , F. Pietropaolo , G. L. Raselli , F. Resnati , M. Rossella , P. Sala , F. Stocker , A. Zani

The RENO experiment recently reported the disappearance of reactor electron antineutrinos consistent with neutrino oscillations, with a significance of 4.9 standard deviations. The published ratio of observed to expected number of…

We investigate Rayleigh scattering in dissipative optical lattices. In particular, following recent proposals (S. Guibal {\it et al}, Phys. Rev. Lett. {\bf 78}, 4709 (1997); C. Jurczak {\it et al}, Phys. Rev. Lett. {\bf 77}, 1727 (1996)),…

A spectrometer for the measurement of spontaneous Rayleigh-Brillouin scattering line profiles at ultraviolet wavelengths from gas phase molecules has been developed, employing a high-power frequency-stabilized UV laser with narrow bandwidth…

大气与海洋物理 · 物理学 2012-10-08 Ziyu Gu , M. Ofelia Vieitez , Eric-Jan van Duijn , Wim Ubachs

Slow liquid scintillator Cherenkov detectors have been proposed as part of several future neutrino experiments because they can provide both directionality and energy measurements. This feature is expected to enhance the sensitivities for…

仪器与探测器 · 物理学 2019-02-18 Ziyi Guo , Minfang Yeh , Rui Zhang , De-Wen Cao , Ming Qi , Zhe Wang , Shaomin Chen

We studied the temperature dependence of the light yield of the linear alkyl benzene (LAB)-based and mesitylene-based liquid scintillators. The light yield increases by 23% for both liquid scintillators when the temperature is lowered from…

仪器与探测器 · 物理学 2014-02-28 Xia DongMei , Yu BoXiang , Li XiaoBo , Sun XiLei , Ding YaYun , Zhou Li , Cao Jun , Hu Wei , Ye XingCheng , Chen HaiTao , Ding XueFeng , Du Bing

To separate scintillation and Cherenkov lights in water-based liquid scintillator detectors is a desired feature for future neutrino and proton decay researches. Linear alkyl benzene (LAB) is one important ingredient of a water-based liquid…

仪器与探测器 · 物理学 2016-06-14 Mohan Li , Ziyi Guo , Minfang Yeh , Zhe Wang , Shaomin Chen

Liquid xenon particle detectors rely on excellent light collection efficiency for their performance. This depends on the high reflectivity of polytetrafluoroethylene (PTFE) at the xenon scintillation wavelength of 178 nm, but the angular…

仪器与探测器 · 物理学 2020-03-31 S. Kravitz , R. J. Smith , L. Hagaman , E. P. Bernard , D. N. McKinsey , L. Rudd , L. Tvrznikova , G. D. Orebi Gann , M. Sakai

The response of a NE-213 liquid-scintillator detector has been measured using tagged neutrons from 2--6 MeV originating from an Am/Be neutron source. The neutron energies were determined using the time-of-flight technique. Pulse-shape…

The Reactor Experiment for Neutrino Oscillation (RENO) has been taking electron antineutrino ($\overline{\nu}_{e}$) data from the reactors in Yonggwang, Korea, using two identical detectors since August 2011. Using roughly 500 live days of…

Rayleigh Brillouin (RB) scattering profiles for air have been recorded for the temperature range from 255 to 340 K and the pressure range from 640 to 3300 mbar, covering the conditions relevant for the Earth's atmosphere and for planned…

光学 · 物理学 2014-05-28 Ziyu Gu , Benjamin Witschas , Willem van de Water , Wim Ubachs

Jiangmen Underground Neutrino Observatory (JUNO) is the next generation neutrino experiment which aims at neutrino mass hierarchy problem along with many other cutting-edge studies concerning neutrinos. Located 700m underground in Jiangmen…

仪器与探测器 · 物理学 2023-08-07 Guojun Yu , Jialiang Zhang , Shuo Li , Zifeng Xu , Lei Zhang , Aizhong Huang , Ming Qi

We have measured the scintillation and ionization yield of recoiling nuclei in liquid argon as a function of applied electric field by exposing a dual-phase liquid argon time projection chamber (LAr-TPC) to a low energy pulsed narrow band…