5-10 May 2019
MedILS
Europe/Berlin timezone

Applications of carbon nanotube foams as near-critical-density targets for laser-driven ion acceleration and X-ray/Gamma-ray generation

Not scheduled
20m
MedILS

MedILS

Meštrovićevo šetalište 45 HR – 21000 Split Republic of Croatia
Poster Contribution Laser-driven ion acceleration

Speaker

Prof. Wenjun Ma (peking univeristy)

Description

Carbon nanotubes are allotropes of carbon with a cylindrical nanostructure. When they randomly bond with each other by van der Waals forces, so-called carbon nanotube foam (CNF) is formed. The average density of CNFs lies in the range of a few mg/cm^3 to tens of mg/cm^3. If fully ionized, such a thin foam can turn to a plasma slab with critical density. Here we report the recent progress on the fabrication and the applications of CNF as near-critical-density targets for laser-driven ion acceleration and X-ray/Gamma-ray generation. Our recent experimental results show that highly energetic carbon ions can be obtained by shooting a CNF-coated ultrathin solid foil with PW laser pulses. Ions in the solid foil undergo a cascaded accelerations process if the density of CNF is lower than 3 mg/cm^2. Our simulation study also reveals that such double-layer targets can be employed to efficiently generate bright X-ray/Gamma-ray pulses with currently available PW lasers in a very simple way. Preliminary experimental results using a 100 TW laser will be presented.

Working group Laser-driven ion acceleration

Primary author

Prof. Wenjun Ma (peking univeristy)

Co-authors

Presentation Materials

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