A5008394670- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Laser Material Processing Techniques
- Welding Techniques and Residual Stresses
- Atomic and Subatomic Physics Research
- Surface Roughness and Optical Measurements
- earthquake and tectonic studies
- Earthquake Detection and Analysis
- Gamma-ray bursts and supernovae
- Seismology and Earthquake Studies
- Advanced Sensor Technologies Research
- Geodetic Measurements and Engineering Structures
- Material Selection and Properties
- Cosmology and Gravitation Theories
- Geophysics and Gravity Measurements
- Surface Modification and Superhydrophobicity
- 3D Surveying and Cultural Heritage
- Plasmonic and Surface Plasmon Research
- Advanced Biosensing Techniques and Applications
- Thermography and Photoacoustic Techniques
- Epoxy Resin Curing Processes
Tianjin University
2025
East China University of Technology
2023-2024
Queen's University
2010-2021
Observations of neutral-current nu interactions on deuterium in the Sudbury Neutrino Observatory are reported. Using neutral current (NC), elastic scattering, and charged reactions assuming standard 8B shape, nu(e) component solar flux is phis(e) = 1.76(+0.05)(-0.05)(stat)(+0.09)(-0.09)(syst) x 10(6) cm(-2) s(-1) for a kinetic energy threshold 5 MeV. The non-nu(e) phi(mu)(tau) 3.41(+0.45)(-0.45)(stat)(+0.48)(-0.45)(syst) s(-1), 5.3sigma greater than zero, providing strong evidence flavor...
The Sudbury Neutrino Observatory has precisely determined the total active (nu(x)) 8B solar neutrino flux without assumptions about energy dependence of nu(e) survival probability. measurements were made with dissolved NaCl in heavy water to enhance sensitivity and signature for neutral-current interactions. is found be 5.21 +/- 0.27(stat)+/-0.38(syst) x 10(6) cm(-2) s(-1), agreement previous standard models. A global analysis these other reactor results yields Deltam(2)=7.1(+1.2)(-0.6)...
We report results from a combined analysis of solar neutrino data all phases the Sudbury Neutrino Observatory (SNO). By exploiting particle identification information obtained proportional counters installed during third phase, this improved background rejection in that phase experiment. The SNO resulted total flux active flavors ${}^{8}\mathrm{B}$ decays Sun...
SNO+ is a large liquid scintillator-based experiment located 2km underground at SNOLAB, Sudbury, Canada. It reuses the Sudbury Neutrino Observatory detector, consisting of 12m diameter acrylic vessel which will be filled with about 780 tonnes ultra-pure scintillator. Designed as multipurpose neutrino experiment, primary goal search for neutrinoless double-beta decay (0$\nu\beta\beta$) 130Te. In Phase I, detector loaded 0.3% natural tellurium, corresponding to nearly 800 kg 130Te, an expected...
Results are reported from a joint analysis of Phase I and II data the Sudbury Neutrino Observatory. The effective electron kinetic energy threshold used is ${T}_{\mathrm{eff}}=3.5$ MeV, lowest yet achieved with water Cherenkov detector data. In units ${10}^{6}$ cm${}^{\ensuremath{-}2}$ ${\mathrm{s}}^{\ensuremath{-}1}$, total flux active-flavor neutrinos $^{8}\mathrm{B}$ decay in Sun measured using neutral current (NC) reaction on deuterons, no constraint neutrino spectrum, found to be...
This article provides the complete description of results from Phase I data set Sudbury Neutrino Observatory (SNO). The is based on a 0.65 kiloton-year exposure ${}^{2}{\mathrm{H}}_{2}$O (in following denoted as ${\mathrm{D}}_{2}$O) to solar $^{8}\mathrm{B}$ neutrino flux. Included here are details SNO physics and detector model, evaluations systematic uncertainties, estimates backgrounds. Also discussed SNO's approach statistical extraction signals three reactions (charged current, neutral...
This paper details the solar neutrino analysis of 385.17-day Phase-III data set acquired by Sudbury Neutrino Observatory (SNO). An array $^3$He proportional counters was installed in heavy-water target to measure precisely rate neutrino-deuteron neutral-current interactions. technique determine total active $^8$B flux largely independent methods employed previous phases. The neutrinos measured be $5.54^{+0.33}_{-0.31}(stat.)^{+0.36}_{-0.34}(syst.)\times 10^{6}$ cm$^{-2}$ s$^{-1}$, consistent...
The DEAP-3600 experiment is located 2 km underground at SNOLAB, in Sudbury, Ontario. It a single-phase detector that searches for dark matter particle interactions within 1000-kg fiducial mass target of liquid argon. A first generation prototype (DEAP-1) with 7-kg argon demonstrated high level pulse-shape discrimination (PSD) reducing β/γ backgrounds and helped to develop low radioactivity techniques mitigate surface-related α backgrounds. Construction the nearly complete commissioning...
A search has been made for neutrinos from the hep reaction in Sun and diffuse supernova neutrino background (DSNB) using data collected during first operational phase of Sudbury Neutrino Observatory, with an exposure 0.65 kilotonne-years. For search, two events are observed effective electron energy range 14.3 MeV <T_eff< 20 where 3.1 expected. After accounting oscillations, upper limit 2.3x10^4 cm^-2s^-1 at 90% confidence level is inferred on integral total flux neutrinos. DSNB neutrinos,...
A search has been made for sinusoidal periodic variations in the $^8$B solar neutrino flux using data collected by Sudbury Neutrino Observatory over a 4-year time interval. The variation at period of one year is consistent with modulation Earth's orbital eccentricity. No significant periodicities are found periods between 1 day and 10 years either an unbinned maximum likelihood analysis or Lomb-Scargle periodogram analysis. inconsistent hypothesis that results recent Sturrock et al., based...
Results are reported on the measurement of atmospheric neutrino-induced muon flux at a depth 2 kilometers below Earth's surface from 1229 days operation Sudbury Neutrino Observatory (SNO). By measuring through-going muons as function zenith angle, SNO experiment can distinguish between oscillated and unoscillated portion neutrino flux. A total 514 muonlike events measured $\ensuremath{-}1\ensuremath{\le}\mathrm{cos}{\ensuremath{\theta}}_{\mathrm{zenith}}\ensuremath{\le}0.4$ in exposure...
This paper uses an innovative improved artificial bee colony (IABC) algorithm to aid in the fabrication of a highly responsive phase-modulation surface plasmon resonance (SPR) biosensor. In this biosensor’s sensing structure, double-layer Ag–Au metal film is combined with blue phosphorene/transition dichalcogenide (BlueP/TMDC) hybrid structure and graphene. optimization function IABC method, reflectivity at angle incorporated as constraint achieve high phase sensitivity. The performance...
Data from the Sudbury Neutrino Observatory have been used to constrain lifetime for nucleon decay ``invisible'' modes, such as $n\ensuremath{\rightarrow}3\ensuremath{\nu}$. The analysis was based on a search $\ensuremath{\gamma}$ rays deexcitation of residual nucleus that would result disappearance either proton or neutron $^{16}\mathrm{O}$. A limit ${\ensuremath{\tau}}_{\mathrm{inv}}>2\ifmmode\times\else\texttimes\fi{}{10}^{29}\text{ }\text{ }\mathrm{yr}$ is obtained at 90% confidence...