Sangam: A Confluence of Knowledge Streams

Escaping Electron from Intense Laser-Solid Interactions as a Function of Laser Spot Size

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dc.creator Rusby, Dean
dc.creator Neely, David
dc.date 2017-11-27T13:45:28Z
dc.date 2017-11-27T13:45:28Z
dc.date 2017
dc.date.accessioned 2022-05-26T11:02:52Z
dc.date.available 2022-05-26T11:02:52Z
dc.identifier http://purl.org/net/edata/handle/edata/731
dc.identifier http://dx.doi.org/10.5286/edata/709
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/204135
dc.description A high powered laser was defocused to observe the effect that this has on the escaping electron population. The data was recorded on Image plate and saved as a .Fit file. Analysis of the diagnostic was conducted using GEANT4 and PIC simulations regarding the self-focusing of the laser on the front surface were also done. Here is the abstract: The interaction of a high-intensity laser with a solid target produces a high-energy distribution of electrons that pass into the target. These electrons reach the rear surface of the target that creates strong electric potentials that restrict the escape of many of the electrons. The measurement of the angle, flux and spectra of the electrons that do escape is able to give insights to the initial interaction. Here, the escaping electrons have been measured from interactions with intensities from 〖10〗^(17-20) W/cm2, where the intensity has been reduced by increasing the size of the focal spot. A curved diagnostic with multiple layers of differentially filtered image plate measures the escaping electrons from the target. An increase in electron flux is observed at an intensity of $ $ which corresponds to a defocus of 100 µm. The peak temperature of the electron distribution is also calculated and found to be relatively constant as a function of laser spot size.
dc.language en
dc.relation https://doi.org/10.1051/epjconf/201816702001
dc.rights Creative Commons Attribution 4.0 International
dc.rights https://creativecommons.org/licenses/by/4.0/
dc.subject physics
dc.subject Plasma Physics
dc.subject Hot electrons
dc.subject Electron Angular Distribution
dc.subject High intensity laser
dc.title Escaping Electron from Intense Laser-Solid Interactions as a Function of Laser Spot Size
dc.type Collection


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