To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure firstname.lastname@example.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
A laser wakefield accelerator (LWFA) with a weak focusing force is considered to seek improved beam quality in LWFA. We employ super-Gaussian laser pulses to generate the wakefield and study the behavior of the electron beam dynamics and synchrotron radiation arising from the transverse betatron oscillations through analysis and computation. We note that the super-Gaussian wakefields radically reduce the betatron oscillations and make the electron orbits mainly ballistic over a single stage. This feature permits to obtain small emittance and thus high luminosity, while still benefitting from the low-density operation of LWFA (Nakajima et al. 2011 Phys. Rev. ST Accel. Beams14, 091301), such as the reduced radiation loss, less number of stages, less beam instabilities, and less required wall plug power than in higher density regimes.
On hand of 3D PIC simulations we show that in a strongly
magnetized plasma a relativistic electron beam can be forced
to emit highly coherent radio emission by self-induced nonlinear
density fluctuations. Such slowly moving nonlinear structures
oscillate with the local plasma frequency at which the relativistic
electrons are scattered. Beam electrons dissipate a significant
amount of their kinetic energy by inverse Compton radiation
at a frequency of about γ2ωpe. Since
the beam is sliced into pancake structures which experience
the same electric field the inverse Compton scattering is coherent.
Such a process is a very promising candidate for the coherent
radio emission of pulsars.
We investigate numerical effects related to “single-cycle”
ionization of dense matter by an ultra-short laser pulse.
The strongly nonadiabatic response of electrons leads to
generation of a MG steady magnetic field in laser–solid
interaction. By using two-beam interference, it is possible
to create periodic density structures able to trap light
and to generate relativistic ionization fronts.
Email your librarian or administrator to recommend adding this to your organisation's collection.