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@article{Rigby:2018:10.1038/s41567-018-0059-2,
author = {Rigby, A and Cruz, F and Albertazzi, B and Bamford, R and Bell, AR and Cross, JE and Fraschetti, F and Graham, P and Hara, Y and Kozlowski, PM and Kuramitsu, Y and Lamb, DQ and Lebedev, S and Marques, JR and Miniati, F and Morita, T and Oliver, M and Reville, B and Sakawa, Y and Sarkar, S and Spindloe, C and Trines, R and Tzeferacos, P and Silva, LO and Bingham, R and Koenig, M and Gregori, G},
doi = {10.1038/s41567-018-0059-2},
journal = {Nature Physics},
pages = {475--479},
title = {Electron acceleration by wave turbulence in a magnetized plasma},
url = {http://dx.doi.org/10.1038/s41567-018-0059-2},
volume = {14},
year = {2018}
}

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TY  - JOUR
AB  - Astrophysical shocks are commonly revealed by the non-thermal emission of energetic electrons accelerated in situ 1-3 . Strong shocks are expected to accelerate particles to very high energies 4-6 ; however, they require a source of particles with velocities fast enough to permit multiple shock crossings. While the resulting diffusive shock acceleration 4 process can account for observations, the kinetic physics regulating the continuous injection of non-thermal particles is not well understood. Indeed, this injection problem is particularly acute for electrons, which rely on high-frequency plasma fluctuations to raise them above the thermal pool 7,8 . Here we show, using laboratory laser-produced shock experiments, that, in the presence of a strong magnetic field, significant electron pre-heating is achieved. We demonstrate that the key mechanism in producing these energetic electrons is through the generation of lower-hybrid turbulence via shock-reflected ions. Our experimental results are analogous to many astrophysical systems, including the interaction of a comet with the solar wind 9 , a setting where electron acceleration via lower-hybrid waves is possible.
AU  - Rigby,A
AU  - Cruz,F
AU  - Albertazzi,B
AU  - Bamford,R
AU  - Bell,AR
AU  - Cross,JE
AU  - Fraschetti,F
AU  - Graham,P
AU  - Hara,Y
AU  - Kozlowski,PM
AU  - Kuramitsu,Y
AU  - Lamb,DQ
AU  - Lebedev,S
AU  - Marques,JR
AU  - Miniati,F
AU  - Morita,T
AU  - Oliver,M
AU  - Reville,B
AU  - Sakawa,Y
AU  - Sarkar,S
AU  - Spindloe,C
AU  - Trines,R
AU  - Tzeferacos,P
AU  - Silva,LO
AU  - Bingham,R
AU  - Koenig,M
AU  - Gregori,G
DO  - 10.1038/s41567-018-0059-2
EP  - 479
PY  - 2018///
SN  - 1745-2473
SP  - 475
TI  - Electron acceleration by wave turbulence in a magnetized plasma
T2  - Nature Physics
UR  - http://dx.doi.org/10.1038/s41567-018-0059-2
UR  - http://hdl.handle.net/10044/1/59190
VL  - 14
ER  -

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