Dr. ​Gianluca Sarri
Lecturer in Physics at Queen's University Belfast, UK
Research activity: projects, publications, conferences
Government-funded projects
  • ​​Dynamics of relativistic leptonic jets in low-density plasmas

          -     Funding body:      Engineering and Physical Sciences Research Council (EPSRC)
          -      Duration:                01/08/2013 → 31/08/2015
         -     Synopsis:                Matter - antimatter plasmas constitute a unique state of matter that, whilst elusive to be generated in the                                                                     laboratory, is thought to be present in iconic astrophysical environments and play a major role in their dynamics.                                                       Using high-intensity lasers, we aim at generating the first neutral electron-positron plasma in the laboratory and                                                       study its dynamics in conditions of relevance to astrophysics.  

         -     Links:                        1. EPSRC website
                                                            2. Related main publication

  • ​​​Collimated and neutral electron-positron plasmas in the laboratory

          -     Funding body:      Engineering and Physical Sciences Research Council (EPSRC)
         -    Duration:                01/12/2015 → 01/12/2016
         -    Synopsis:                 With the present project we aim at generating pencil-like, collimated jets of matter-antimatter plasma, closely                                                             mimicking astrophysical jets. These events are the largest single event in the Universe, and their dynamics is                                                               largely unexplored, due to the difficulty in extracting the relevant physical parameters from astrophysical                                                                       observations. This grant mainly funds experiments to be carried out using the HERCULES laser hosted by                                                                     Michigan University, currently the most intense laser world-wide.

         -     Links:                        1. EPSRC website

  • TARANIS-X a few-fs, high power, laser system

          -    Funding body:      Engineering and Physical Sciences Research Council (EPSRC)
          -    Duration:                01/04/2015 → 31/03/2016
          -    Synopsis:                 With the present 1M pound grant, we will upgrade our existing laser system, TARANIS, to generate                                                                                  unprecedented sub-10fs laser pulses with energies exceeding 1 J. This system will be unique world-wide and will                                                      allow for novel studies of matter out of equilibrium on ultra-short time-scales.

         -     Links:                        1. EPSRC website

  • Laboratory studies of neutral and collimated electron-positron beams

          -    Funding body:        Engineering and Physical Sciences Research Council (EPSRC)
         -   Duration:                  01/11/2016 → 31/10/2019
         -   Synopsis:                  With the present 0.5 M pound grant, we will perform the first experimental studies of the dynamics of neutral                                                             matter-antimatter plasmas in the laboratory. These experiments will closely mimick the propagation of                                                                           astrophysical jets through the intergalactic medium, and help understand key physical processes, such as the                                                               emission of strong gamma-ray bursts.

         -     Links:                        1. EPSRC website

  • Main publications    
      Overall peer-reviewed publications: 60  (for a full list see the attached pdf, or visit my Goggle Scholar profile )

    1. G. Sarri et al. Generation of a neutral, high-density electron-positron plasma in the laboratory 
         Nature Commun. 6, 6747 (2015) 

    2. G. Sarri et al. Ultra-bright and collimated multi-MeV gamma-ray beams via laser-driven non-linear Thomson scattering 
          Phys. Rev. Lett. 113, 224801 (2014).

    3. G. Sarri et al. Table-top laser-based source of femtosecond, collimated, ultra-relativistic positron beams 
      Phys. Rev. Lett. 110, 255002 (2013)

    4. H. Ahmed et al. Time-resolved characterization of the formation of a collisionless shock 
      Phys. Rev. Lett. 110, 205001 (2013). 

    5. G. Sarri et al. Dynamics of self-generated, large amplitude magnetic fields following high-intensity laser matter interaction
         Phys. Rev. Lett. 109, 205002 (2012).

    6. S. Kar et al. Ion acceleration in multispecies targets driven by intense laser radiation pressure
      Phys. Rev. Lett. 109, 185006 (2012).

    7. K. Quinn et al. Weibel-induced filamentation during ultrafast, laser-driven plasma expansion
         Phys. Rev. Lett. 108, 135001 (2012)

    8. M. Dieckmann et al. PIC simulations of thermal anisotropy-driven Weibel instability in a circular rarefaction wave
         New J. Phys. 14, 023007 (2012).

    9. G. Sarri et al. Generation of a purely electrostatic collisionless shock during the expansion of a dense plasma through a rarefied           medium Phys. Rev. Lett.  107, 025003 (2011).

    10. G. Sarri et al. Spatially resolved measurements of laser filamentation in long scale length underdense plasmas with and without           beam smoothing Phys. Rev. Lett. 106, 095001 (2011).

    11. G. Sarri et al. Observation of postsoliton expansion following laser propagation through an underdense plasma
            Phys. Rev. Lett 105, 175007 (2010).  

    12. S. Buffechoux et al. Hot electrons transverse refluxing in ultraintense laser-solid interactions
            Phys. Rev. Lett. 105, 015005 (2010).

     13. K. Quinn et al. Laser-driven ultrafast field propagation on solid surfaces
         Phys. Rev. Lett. 102, 194801 (2009). 

     14. A. Giulietti et al. Intense gamma-ray source in the giant-dipole-resonance range driven by 10-TW laser pulses  
             Phys. Rev. Lett. 101, 105002 (2008).

  • Invited Talks at International Conferences


1. 47th Winter Colloquium on the physics of quantum electronics Snowbird, Utah, US, Jan 2017:
Experimental studies of strong field quantum electrodynamics using ultra-high intensity lasers

         2. 43rd European Physical Society conference on plasma physics, Leuven Belgium, July 2016:
Laboratory studies of the dynamics of neutral electron-positron beams

         3. Laser Optics 2016, St. Petersburg Russia, June 2016:
Electron beam dynamics in ultra-intense laser fields

         4. 2nd European Advanced Accelerator Concepts Workshop (EAAC), La Biodola Italy, Sept. 2015:
Ultra-high brilliance gamma ray beams generation

         5. SPIE Optics and Optoelectronics, Prague Czech Republic, Apr 2015:
Ultrahigh brilliance multi-MeV gamma-ray beams from non-linear Thomson scattering

         6. Shock Acceleration: from the solar system to cosmology, The Lorentz Center, Leiden NL, Jan 2015:
Spatially and temporally resolved studies of collisionless shocks in the laboratory

         7. High Performance Computing at CNAF: Accelerators and Plasma Physics, Bologna Italy, June 2014:
Non-linear Thomson scattering in a fully optical setup

         8. Science with high-power lasers and plasmas, Pisa Italy, May 2014:
Laser-driven generation of ultra-bright MeV gamma-rays via non-linear Thomson scattering

         9. 41st IOP plasma physics conference, London UK, Apr 2014:
Laboratory generation of high-density and neutral electron-positron plasmas

         10. 3rd International Conference Frontiers in Diagnostic Techniques, INFN Rome Italy, Nov 2013:
Plasma radiography employing laser-driven proton beams.

         11. Advanced laser based sources of energetic particles and photons for diagnostics of High Energy Density Matter, Darmstadt                      Germany, Sept 2013:
Laser-electron interactions as a source of energetic, high-flux and collimated gamma-rays.

         12. 40th European Physical Society conference on plasma physics, Espoo Finland, July 2013:
Laser-driven generation and acceleration of ultrarelativistic positron beams.

         13. 5th International Scientific Spring, Islamabad Pakistan, March 2013:
Shocks and solitons in laser-driven plasmas.

         14. Workshop on All Optical Thomson / Compton scattering with laser-plasma accelerators, Pisa Italy, Nov 2012:
 Experimental investigation of non-linear quantum electron dynamics using ultra high intensity lasers.

         15. Light at Extreme Intensities (LEI 2011), Szeged Hungary, Nov 2011:
Employing laser-accelerated proton beams to diagnose high intensity laser-plasma interactions

         16. 19th IPBPG conference, Queen's University of Belfast, Belfast UK, May 2009:
Proton Radiography of laser produced plasmas of relevance to inertial confinement fusion