Abstract Sub-10 attosecond pulses (APs) with half-cycle electric fields provide exceptional options to detect and manipulate electrons in the atomic timescale. However, availability of such is still challenging. Here, we propose a method generate isolated sub-10 based on cascade process naturally happening plasma. A backward AP first generated by shooting moderate overdense plasma one-cycle fem...

The first demonstration of electron-Bernstein-wave heating by double-mode conversion from the O to the X mode in an overdense H-mode tokamak plasma has been achieved in the Tokamak à Configuration Variable device. This technique overcomes the upper density limit experienced by conventional microwave heating. The sensitive dependence of the O-X mode conversion on the microwave launching directio...

The excitation of electrostatic waves in plasma by laser electromagnetic (EM) pulse is important as it provides a scheme which the power from EM field can be transferred into medium. paper presents fundamentally new ponderomotive pressure-driven mechanism an overdense magnetized finite pulse. Particle-in-cell simulations using EPOCH-4.17.10 framework have been utilized for study interacting wit...

Efficient coupling of intense laser pulses to solid-density matter is critical to many applications including ion acceleration for cancer therapy. At relativistic intensities, the focus has been mainly on investigating various laser beams irradiating initially overdense flat interfaces with little or no control over the interaction. Here, we propose a novel approach that leverages recent advanc...

In this work we examine the viability of employing an underdense plasma lens as a final focusing method for a linear e+ecollider. The underdense plasma lens is -superior to the overdense lens in that it improves focusing linearity and background event rate, but works well only for electrons. We thus consider the interaction of an ebeam which is smaller than the e+ beam at collision, a case we t...

The interaction of intense electromagnetic waves with electron-positron (e-e+) plasmas is studied by particle-in-cell simulations and theoretical analysis. It found that an initial underdense e+plasma can become opaque under the irradiation a relativistically laser pulse. strong ponderomotive force relativistic pulse small mass density e-e+ plasma combine to induce efficient pile-up electrons p...

Hot electron temperatures and electron energy spectra in the course of interaction between intense laser pulse and overdense plasmas are reexamined from a viewpoint of the difference in laser wavelength. The hot electron temperature measured by a particle-in-cell simulation is scaled by I rather than Iλ at the interaction with overdense plasmas with fixed ions, where I and λ are the laser inten...