Abstract
| Original language | English |
|---|---|
| Article number | 43910 |
| Number of pages | 10 |
| Journal | Scientific Reports |
| Volume | 7 |
| DOIs | |
| Publication status | Published - 10 Mar 2017 |
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Keywords
- laser-wakefield accelerators
- ultra-high-electric fields
- ultra-short electron bunches
- electron beam charge
- laser energy distribution
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Three electron beams from a laser-plasma wakefield accelerator and the energy apportioning question. / Yang, X.; Brunetti, E.; Reboredo Gil, D.; Welsh, G.H.; Li, F.Y.; Cipiccia, S.; Ersfeld, B.; Grant, D.W.; Grant, P.A.; Islam, M.R.; Tooley, M.P.; Vieux, G.; Wiggins, S.M.; Sheng, Z.M.; Jaroszynski, D.A.
In: Scientific Reports, Vol. 7, 43910, 10.03.2017.Research output: Contribution to journal › Article
TY - JOUR
T1 - Three electron beams from a laser-plasma wakefield accelerator and the energy apportioning question
AU - Yang, X.
AU - Brunetti, E.
AU - Reboredo Gil, D.
AU - Welsh, G.H.
AU - Li, F.Y.
AU - Cipiccia, S.
AU - Ersfeld, B.
AU - Grant, D.W.
AU - Grant, P.A.
AU - Islam, M.R.
AU - Tooley, M.P.
AU - Vieux, G.
AU - Wiggins, S.M.
AU - Sheng, Z.M.
AU - Jaroszynski, D.A.
PY - 2017/3/10
Y1 - 2017/3/10
N2 - Laser-wakefield accelerators are compact devices capable of delivering ultra-short electron bunches with pC-level charge and MeV-GeV energy by exploiting the ultra-high electric fields arising from the interaction of intense laser pulses with plasma. We show experimentally and through numerical simulations that a high-energy electron beam is produced simultaneously with two stable lower-energy beams that are ejected in oblique and counter-propagating directions, typically carrying off 5-10% of the initial laser energy. A MeV, 10s nC oblique beam is ejected in a 30-60 degree hollow cone, which is filled with more energetic electrons determined by the injection dynamics. A nC-level, 100s keV backward-directed beam is mainly produced at the leading edge of the plasma column. We discuss the apportioning of absorbed laser energy amongst the three beams. Knowledge of the distribution of laser energy and electron beam charge, which determine the overall efficiency, is important for various applications of laser-wakefield accelerators, including the development of staged high-energy accelerators.
AB - Laser-wakefield accelerators are compact devices capable of delivering ultra-short electron bunches with pC-level charge and MeV-GeV energy by exploiting the ultra-high electric fields arising from the interaction of intense laser pulses with plasma. We show experimentally and through numerical simulations that a high-energy electron beam is produced simultaneously with two stable lower-energy beams that are ejected in oblique and counter-propagating directions, typically carrying off 5-10% of the initial laser energy. A MeV, 10s nC oblique beam is ejected in a 30-60 degree hollow cone, which is filled with more energetic electrons determined by the injection dynamics. A nC-level, 100s keV backward-directed beam is mainly produced at the leading edge of the plasma column. We discuss the apportioning of absorbed laser energy amongst the three beams. Knowledge of the distribution of laser energy and electron beam charge, which determine the overall efficiency, is important for various applications of laser-wakefield accelerators, including the development of staged high-energy accelerators.
KW - laser-wakefield accelerators
KW - ultra-high-electric fields
KW - ultra-short electron bunches
KW - electron beam charge
KW - laser energy distribution
UR - http://www.nature.com/srep/
U2 - 10.1038/srep43910
DO - 10.1038/srep43910
M3 - Article
VL - 7
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
M1 - 43910
ER -