Positron & Positronium Physics
 
The UCL Positron Group
      Positrons (the antiparticles of electrons) and positronium (the bound state of an electron and a positron) are currently employed in the exploration of fundamental effects ranging from condensed matter physics to astrophysics as well as in the diagnostics of living biological systems and of the electronic and structural properties of industrially important materials. Our main research interests are in atomic physics problems where beams of positrons and positronium with speeds comparable to those of atomic electrons are contributing to the unravelling of general collision phenomena as well as illuminating specific interactions and processes such as exchange and annihilation.
      Current hot topics of research worldwide include positron-induced ion production (comprising ionization with and without Ps formation, annihilation, etc), positron impact excitation (vibrational and electronic) and positronium scattering. Measurements of differential ionization and positronium collisions are in their infancy. UCL is a pioneer in this type of research.
News
Studentships, Assistantships, Fellowships: We welcome applications for studentships, assistantships and fellowships at any time.
If interested, please contact Gaetana Laricchia.


  • Sep. '17: Congratulations to Rina Kadokura for winning a prize for her talk at the recent AMIG conference in Glasgow!
  • Apr. '17: Congratulations to Andrea Loreti on passing his PhD viva!
  • Nov. '16: Congratulations to Sam Fayer on passing his PhD viva!
  • May '16: Congratulations to Andrea Loreti on being awarded a student prize at SLOPOS14!
  • Apr '16: Congratulations to Michael Shipman on passing his PhD viva!
  • It is with much sadness that we share the news that Professor Ceiri Griffith, who with Dr George Heyland established experimental positron physics at UCL in the early 1970s , passed away on the 26th March 2016.
  • Warmest congratulations to Akos Kover on being awarded the Officer's Cross of the Order of Merit of the Republic of Hungary (2016)
  • First direct sightings of low-energy positronium collisions
  • Revealed: the behaviour of positronium in particle billiards
  • Gaetana Laricchia is grateful to the Roland Eotvos Physical Society in Hungary for electing her Honorary Member in 2015.
  • Congratulations to Sam Fayer on winning a second prize at the first UCL Physics Hackathon 2015
  • Institute of Physics Reprint Service:
  • You may download a copy of the IOP brochure "Antimatter - a review of its role in the universe and its applications" from this page.
  • RIVISTA DEL NUOVO CIMENTO Electronic Reprint Service:
  • You may download a ***free*** copy of our paper "Positronium Collision Physics" from this page.
  • SCIENCE Electronic Reprint Service:
  • You may download a ***free*** copy of our paper "Electron-like Scattering of Positronium" from this page.
  • Very well done to Sam Fayer on winning a runner-up poster-prize at QuAMP 2013
  • Warmest congratulations to Akos Kover on being awarded the Physics Prize 2012 of the Hungarian Academy of Sciences
  • Jun '11: Congratulations to Adam Williams on passing his PhD examination!
  • First observation of resonant scattering of Positronium...
  • ...in Physics World
  • ...in New Scientist
  • Brawley et al. publish "Electron-Like Scattering of Positronium"...
  • Oct '10: Congratulations to David Cooke on passing his PhD examination!
  • Thomson Prize 2010
  • Cooke et al. publish "Simultaneous ionization and excitation...
  • IOP AMIG broucher on Antimatter
  • Nov '09: Congratulations to Simon Brawley on passing his PhD viva!
  • Occhialini Prize 2009 IOP
  • Occhialini Prize 2009 SIF
  • Atoms & Antimatter Workshop
  • AIP highlight