Matches in SemOpenAlex for { <https://semopenalex.org/work/W2909304313> ?p ?o ?g. }
- W2909304313 abstract "An approach for accelerating a quasimonoenergetic proton bunch via a hemispherically converging collisionless shock created in laser-cluster interactions at the relativistically induced transparency (RIT) regime is studied using three-dimensional particle-in-cell simulations. By the action of focusing a petawatt class laser pulse onto a micron-size spherical hydrogen cluster, a crescent-shaped collisionless shock is launched at the laser-irradiated hemisphere and propagates inward. The shock converges at the sphere center in concurrence with the onset of the RIT, thereby allowing the proton bunch to be pushed out from the shock surface in the laser propagation direction. The proton bunch experiences further acceleration both inside and outside of the cluster to finally exhibit a quasimonoenergetic spectral peak around 300 MeV while maintaining a narrow energy spread ($ensuremath{sim}10%$) and a small half-divergence angle ($ensuremath{sim}5ifmmode^circelsetextdegreefi{}$) via the effect of the RIT. This mechanism works for finite ranges of parameters with threshold values concerning the laser peak intensity and the cluster radius, resulting from the synchronization of the multiple processes in a self-consistent manner. The present scheme utilizing the internal and external degrees of freedom ascribed to the spherical cluster leads to the proton bunch alternative to the plain target, which allows the operation with a high repetition rate and impurity free." @default.
- W2909304313 created "2019-01-25" @default.
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- W2909304313 date "2019-01-10" @default.
- W2909304313 modified "2023-10-16" @default.
- W2909304313 title "Quasimonoenergetic Proton Bunch Acceleration Driven by Hemispherically Converging Collisionless Shock in a Hydrogen Cluster Coupled with Relativistically Induced Transparency" @default.
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- W2909304313 doi "https://doi.org/10.1103/physrevlett.122.014804" @default.
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