Table-Top Laser-Based Source of Femtosecond, Collimated, Ultrarelativistic Positron Beams
| Data(s) |
20/06/2013
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|---|---|
| Resumo |
<p>The generation of ultrarelativistic positron beams with short duration (τ<sub>e</sub><sup>+</sup>≃30 fs), small divergence (θ<sub>e</sub><sup>+</sup>≃3 mrad), and high density (n <sub>e</sub><sup>+</sup>≃1014-1015 cm<sup>-</sup>3) from a fully optical setup is reported. The detected positron beam propagates with a high-density electron beam and γ rays of similar spectral shape and peak energy, thus closely resembling the structure of an astrophysical leptonic jet. It is envisaged that this experimental evidence, besides the intrinsic relevance to laser-driven particle acceleration, may open the pathway for the small-scale study of astrophysical leptonic jets in the laboratory. </p> |
| Formato |
application/pdf |
| Identificador |
http://dx.doi.org/10.1103/PhysRevLett.110.255002 http://pure.qub.ac.uk/ws/files/9173074/positrons_published.pdf |
| Idioma(s) |
eng |
| Direitos |
info:eu-repo/semantics/openAccess |
| Fonte |
Sarri , G , Schumaker , W , Di Piazza , A , Vargas , M , Dromey , B , Dieckmann , M E , Chvykov , V , Maksimchuk , A , Yanovsky , V , He , Z H , Hou , B X , Nees , J A , Thomas , A G R , Keitel , C H , Zepf , M & Krushelnick , K 2013 , ' Table-Top Laser-Based Source of Femtosecond, Collimated, Ultrarelativistic Positron Beams ' Physical Review Letters , vol 110 , no. 25 , 255002 . DOI: 10.1103/PhysRevLett.110.255002 |
| Palavras-Chave | #GAMMA-RAY BURSTS #ELECTRON-BEAMS #PLASMA #ACCELERATOR #GENERATION #SHOCK |
| Tipo |
article |
