To send 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 sending content to .
To send content items to your Kindle, first ensure email@example.com
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 sending to your Kindle.
Note you can select to send to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be sent 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.
We have developed a new radiography setup with a short-pulse laser-driven x-ray source. Using a radiography axis perpendicular to both long- and short-pulse lasers allowed optimizing the incident angle of the short-pulse laser on the x-ray source target. The setup has been tested with various x-ray source target materials and different laser wavelengths. Signal to noise ratios are presented as well as achieved spatial resolutions. The high quality of our technique is illustrated on a plasma flow radiograph obtained during a laboratory astrophysics experiment on POLARs.
Fast-electron beam stopping mechanisms in media ranging from solid to warm dense matter have been investigated experimentally and numerically. Laser-driven fast electrons have been transported through solid Al targets and shock-compressed Al and plastic foam targets. Their propagation has been diagnosed via rear-side optical self-emission and Kα X-rays from tracer layers. Comparison between measurements and simulations shows that the transition from collision-dominated to resistive field-dominated energy loss occurs for a fast-electron current density ~5 × 1011 A cm−2. The respective increases in the stopping power with target density and resistivity have been detected in each regime. Self-guided propagation over 200μm has been observed in radially compressed targets due to ~1kT magnetic fields generated by resistivity gradients at the converging shock front.
We present some experimental results which demonstrate
the presence of electric inhibition in the propagation
of relativistic electrons generated by intense laser pulses,
depending on target conductivity. The use of transparent
targets and shadowgraphic techniques has made it possible
to evidence electron jets moving at the speed of light,
an indication of the presence of self-generated strong
An experiment has been performed with the LULI
Multi-TeraWatt Laser. The acceleration of electrons injected
in a plasma wave generated by the laser wakefield mechanism
has been observed with a maximum energy gain of 1.5 MeV.
It has been shown that the electrons deflected during the
interaction, could scatter on the walls of the experimental
chamber, and fake a high-energy signal. A special effort
has been given in the electron detection to separate the
accelerated electrons signal from the background noise.The
experimental results agree with theoretical predictions
and numerical simulations when 3D effects on the electron
beam are taken into account.
Email your librarian or administrator to recommend adding this to your organisation's collection.