Radiation dosimetry for Radiotherapy (RT) is a key element in ensuring treatments efficacy as well as both the safety and the proper management of patients. Accurate dosimeters able to perform precise dose measurements is of pivotal importance for the calibration of the radiation beams, aimed at evaluating their characteristics and validating the treatment plan performed during the...
To stay up to date with the user requirements, two major upgrade project are ongoing at the Central Laser Facility. The first project EPAC is aiming to provide a 1PW laser system, 30J in 30fs at 10Hz. A new building has been recently completed and the installation phase is now starting. The second project Vulcan 20-20 is at the final stage of the approval. The aim is to deliver a 20PW laser...
We have investigated long-time dynamics of the quantum carpets occurring in positron transmission through a chiral single-wall carbon nanotube in the channeling mode. We found that the carpet structure depends strongly on the width of the initial wave packet. In the case of the narrow wave packet obtained carpet is periodic and very regular, woven by full and fractional wave packet revivals....
Changing the temperature of single crystal lithium tantalate (LiTaO3) at moderate vacuum conditions gives an attractive possibility to generate and accelerate electron up to 100 keV. The electrons are ejected either from the crystal or from the target (depending on polarity). The electrons than generate X-Rays via bremsstrahlung and characteristic X-ray emission processes.
Amptek, Inc (USA)...
A narrow (30−40 μm in diameter) capillary-like rippled channel finished by a post-channel crown was observed in 2D hydrodynamic interaction regime of 100J@100 ns KrF laser pulses with a translucent PMMA targets at intensities up to 5×1012 W/cm^2. Channel formation mechanism includes self-consistent laser beam filamentation along UV light penetration depth. The modelling experiments with a...