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Health Physics, Environmental Radioactivity, Particle Physics Group

(Left) Radon Analysis Laboratory (Right) The Daya Bay Experiment Site
(Left) Radon Analysis Laboratory (Right) The Daya Bay Experiment Site

People

Academic staff

Research staff

Students
Dr. John K.C. LEUNG
Dr. Jason C.S. PUN		 Dr. Talent KWOK
 

Mr. Kexi CUI (MPhil)
Mr. Ka Yu FUNG (MPhil)
Miss Amy Kar Yee LEUNG (MPhil)

 

Research Activities

1. Radiation Protection and Environmental Radioactivity

Development of a plume dispersion model for use in the events of nuclear accident that may occur in the Daya Bay nuclear power plants, production of Hong Kong radon potential map, measurement of radon in air; measurement of radon and radium isotopes in underground water; radioactive waste management in Siu A Chau Low-Level Radioactive Wastes Facility.

2. Particle Physics

Participating in the Daya Bay Reactor Neutrino Experiment (http://dayabay.physics.hku.hk/ and http://dayawane.ihep.ac.cn/) in determining precisely the value of θ13, the mixing angle of electron anti-neutrinos emitted from the Daya Bay nuclear power plants. The experiment is a joint force of 38 institutions from China, Czech Republic, Hong Kong, Russia, Taiwan and USA. 

A small underground laboratory inside the Aberdeen Tunnel in Hong Kong is now being used for studying the production of neutrons from cosmic-ray muons. The results of our work have provided useful radiation background information for the Daya Bay Experiment.  
 

Some Representative Publications

(For the complete publication list of the department, please go back to Research.)

 

  1. "Branching Fraction Measurements of χc0 and χc2 to π0π0and ηη", B.J. Liu, J.K.C. Leung and J.C.S. Pun (with BESIII Collaboration), Phys. Rev. D, 81, 052005 (2010).
  2. "Measurements of hc(1P1) in Ψ’ Decays", B.J. Liu, J.K.C. Leung and J.C.S. Pun (with BESIII Collaboration), Phys. Rev. Lett., 104, 132002 (2010).
  3. "An Ensemble Kalman Filter for Atmospheric Data Assimilation: Application to Wind Tunnel Data", D.Q. Zheng, J.K.C. Leung and B.Y. Lee, Atmospheric Environment, 44, 1699-1705 (2010).
  4. "Online Update of Model State and Parameters of a Monte Carlo Atmospheric Dispersion Model by Using Ensemble Kalman Filter", D.Q. Zheng, J.K.C. Leung and B.Y. Lee, Atmospheric Environment, 43, 2005-2011 (2009).
  5. "Equilibrium Factor Determination Using SSNTDs", K.N. Yu, S.Y.Y. Leung, D. Nikezic and J.K.C. Leung, Radiation Measurements, 43, S357-S363 (2008).
  6. "An evaluation of the ventilation performance of new SARS isolation wards in nine hospitals in Hong Kong”, Y.G. Li, W.H. Qian, P.L. Yuen, W.H. Seto, J.K. Kwan, J.K.C. Leung, M. Leung and S.C.T. Yu, Indoor and Built Environment, 16:400-10 (2007). 
  7. "Factors affecting ventilation effectiveness in SARS wards”, Y.G. Li, M. Seto, W.H, Yuen, J.K.C. Leung, J.K. Kwan and S.C.T. Yu, Hong Kong Med J, 13(Suppl 7):S30-4 (2007).
  8. "Sensitivity of LR 115 SSNTD in a diffusion chamber", S.Y.Y. Leung, D. Nikezic, J.K.C. Leung and K.N. Yu,Nuclear Instruments and Methods in Physics Research Journal (Section B), 263, 306-310(2007).
  9. "A study of the polyethylene membrane used in diffusion chambers for radon gas concentration measurements", S.Y.Y. Leung, D. Nikezic, J.K.C. Leung and K.N. Yu,Nuclear Instruments and Methods in Physics Research Journal (Section B), 263, 311-316(2007). 
  10. "Coincidence Doppler Broadening Study in Electron-irradiated Polyurethane", D.J. Yang, J.D. Zhang, J.K.C. Leung, C.D. Beling and L.B. Liu, Nuclear Instruments & Methods in Physics Research B, 259, 933-936 (2007).
  11. "Data Assimilation in the Atmospheric Dispersion Model for Nuclear Accident Assessments", D.Q. Zheng, J.K.C. Leung, B.Y. Lee and H.Y. Lam, Atmospheric Environment, 41, 2438-2446 (2007).
Last updated on 16 May 2012
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