Details

Autor(en) / Beteiligte

• Zhao, Q
• Weng, S M
• Sheng, Z M
• Chen, M
• Zhang, G B
• Mori, W B
• Hidding, B
• Jaroszynski, D A
• Zhang, J

Titel

Ionization injection in a laser wakefield accelerator subject to a transverse magnetic field

Ist Teil von

• New journal of physics, 2018-06, Vol.20 (6), p.63031

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2018

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The effect of an external transverse magnetic field on ionization injection of electrons in a laser wakefield accelerator (LWFA) is investigated by theoretical analysis and particle-in-cell simulations. On application of a few tens of Tesla magnetic field, both the electron trapping condition and the wakefield structure changes significantly such that injection occurs over a shorter distance and at an enhanced rate. Furthermore, beam loading is compensated for, as a result of the intrinsic trapezoidal-shaped longitudinal charge density profile of injected electrons. The nonlinear ionization injection and consequent compensation of beam loading lead to a reduction in the energy spread and an enhancement of both the charge and final peak energy of the electron beam from a LWFA immersed in the magnetic field.