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Generation of neutral and high-density electron-positron pair plasmas in the laboratory

  Articoli su Riviste JCR/ISI  (anno 2015)

Autori:  Sarri G., Poder K., Cole J.M., Schumaker W., Di Piazza A., Reville B., Dzelzainis T., Doria D., Gizzi LA., Grittani G., Kar S., Keitel C.H., Krushelnick K., Kuschel S., Mangles S.P.D., Najmudin Z., Shukla N., Silva L.O., Symes D., Thomas A.G.R., Vargas M., Vieira J., Zepf M

Affiliazione Autori:  School of Mathematics and Physics, The Queen’s University of Belfast, Belfast BT7 1NN, UK The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2BZ, UK Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109-2099, USA Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche, 56124 Pisa, Italy INFN, Sez. Pisa, Largo B. Pontecorvo, 3-56127 Pisa, Italy Helmholtz Institute Jena, Fröbelstieg 3, 07743 Jena, Germany GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal Central Laser Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, UK

Riassunto:  Electron-positron pair plasmas represent a unique state of matter, whereby there exists an intrinsic and complete symmetry between negatively charged (matter) and positively charged (antimatter) particles. These plasmas play a fundamental role in the dynamics of ultra-massive astrophysical objects and are believed to be associated with the emission of ultra-bright gamma-ray bursts. Despite extensive theoretical modelling, our knowledge of this state of matter is still speculative, owing to the extreme difficulty in recreating neutral matter-antimatter plasmas in the laboratory. Here we show that, by using a compact laser-driven setup, ion-free electron-positron plasmas with unique characteristics can be produced. Their charge neutrality (same amount of matter and antimatter), high-density and small divergence finally open up the possibility of studying electron-positron plasmas in controlled laboratory experiments.

Volume n.:  6      Pagine da: 6747  a: 6747
Ulteriori informazioni:  We are grateful for the support of the Central Laser Facility staff. The work of W.S., A.G.R.T., K.K. and M.V. was partially supported by the funding schemes National Science Foundation CAREER (grant 1054164) and National Science Foundation/Domestic Nuclear Detection Office (award no. F021166). G.S. and M.Z. wish to acknowledge financial support from the Engineering and Physical Sciences Research Council (grants: EP/L013975/1 and EP/I029206/1, respectively). LAG and G.G. acknowledge financial support from Consiglio Nazionale delle Ricerche (ELI-Italy) and Istituto Nazionale di Fisica Nucleare (CN5-g-RESIST). J.V., N.S. and L.O.S. wish to acknowledge the European Research Council (ERC-2010-AdG grant no. 267841), Fundacao para a Ciencia e Tecnologia, through grant EXPL/FIS-PLA/0834/2012. Z.N., S.P.D., J.M.C, K.P. wish to acknowledge financial support from STFC (grant no. ST/J002062/1). Access to the SuperMUC based in Germany at Leibniz research center was obtained through PRACE.
DOI: 10.1038/ncomms7747

*Impact Factor della Rivista: (2015) 11.329   *Citazioni: 109
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  21/07/2019

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