Hot ion generation from nanostructured surfaces under intense, femtosecond irradiation
S. Bagchi, P. Prem Kiran, M. K. Bhuyan, S. Bose, P. Ayyub, M. Krishnamurthy, G. Ravindra Kumar
Abstract
We present the effect of a nanostructured surface on the emission of ions and electrons from intense (5-36 Petwatt per sq.cm) femtosecond laser produced plasmas. Electrons from optically polished copper targets coated with copper nanoparticles (CuNP) are observed to be hotter than those from uncoated polished targets. A nearly two-fold enhancement is observed for ions in the range 14-74 keV, while ion yield decreases by a factor of 2 in the 74-2000 keV range. The total ion yields measured using a large area Faraday cup are more from CuNP targets than those from polished Cu targets, indicating increased ion beam divergence due to surface modulations.
Create a lesson
Related papers
Apokamp-type Gas Discharge Phenomenon: Experimental and Theoretical Backgrounds
Vasily Yu. Kozhevnikov, Andrey V. Kozyrev, Aleksandr O. Kokovin et al.
Real-time virtual circuits for plasma shape control via neural network emulators: integration and testing in the MAST-U PCS
Matthew J. Marshall, Edward Jones, Graham J. McArdle et al.
Experimental Characterization of Additively Manufactured Metallic Alloys for Electric Propulsion Applications
J. Chamberlain, A. Shashurin
First Plasma Commissioning and Operational Highlights from India's First Spherical Tokamak at IPR
Kishore Mishra, Aditya Verma, N. Mansoori et al.
Machine learning methods for modelling local, linear gyrokinetic simulations of MAST-U pedestal turbulence
Anna Niemelä, Daniel Jordan, Aaro Järvinen et al.
Ion-acoustic eigenmodes in a helical magnetic mirror
Ivan Chernoshtanov