Results 1 to 10 of about 1,577,838 (183)

Emittance preservation of an electron beam in a loaded quasi-linear plasma wakefield [PDF]

, 2017
We investigate beam loading and emittance preservation for a high-charge electron beam being accelerated in quasi-linear plasma wakefields driven by a short proton beam. The structure of the studied wakefields are similar to those of a long, modulated proton beam, such as the AWAKE proton driver.
Adli, Erik, Muggli, Patric, Olsen, Veronica K. Berglyd   +2 more
arxiv   +8 more sources

Effects of misalignments in the optical vortex transformation performed by holograms with embedded phase singularity [PDF]

, 2010
Spatial characteristics of diffracted beams produced by a "fork" hologram from an incident circular Laguerre-Gaussian beam whose axis differ from the hologram optical axis are studied theoretically. General analytical representations for the complex amplitude distribution of a diffracted beam are derived in terms of superposition of Kummer beams or ...
A.Ya. Bekshaev, Allen, Anan'ev, Anzolin, Anzolin, Basistiy, Basistiy, Bazhenov, Bekshaev, Bekshaev, Bekshaev, Bekshaev, Bekshaev, Berry, Berry, Born, Dennis, Franke-Arnold, Gibson, He, Heckenberg, Jack, Janke, Karimi, Karimi, Kotlyar, Kotlyar, Leach, Liu, Mair, Mawet, Molina-Terriza, Moreno, Nieminen, Osorio, Padgett, Pas'ko, Prudnikov, Prudnikov, Rozas, S.V. Sviridova, Sacks, Simpson, Slussarenko, Soskin, Swartzlander, Swartzlander, Tamburini, Wang   +48 more
arxiv   +3 more sources

Six-dimensional matching of intense beam with linear accelerating structure [PDF]

Nuclear Instruments and Methods in Physics Research, A 995 (2021) 165074, 2021
Beam matching is a common technique that is routinely employed in accelerator design with the aim of minimizing beam losses and preservation of beam brightness. Despite being widely used, a full theoretical understanding of beam matching in 6D remains elusive. Here, we present an analytical treatment of 6D beam matching of a high-intensity beam onto an
arxiv   +1 more source

Characterizing ultra-low emittance electron beams using structured light fields [PDF]

Phys. Rev. Accel. Beams 24 (2021) 012803, 2020
Novel schemes for generating ultra-low emittance electron beams have been developed in the last years and promise compact particle sources with excellent beam quality suitable for future high-energy physics experiments and free-electron lasers. Current methods for the characterization of low emittance electron beams such as pepperpot measurements or ...
arxiv   +1 more source

Influence of the multipole order of the source on the decay of an inertial wave beam in a rotating fluid [PDF]

, 2015
We analyze theoretically and experimentally the far-field viscous decay of a two-dimensional inertial wave beam emitted by a harmonic line source in a rotating fluid.
Cortet, Pierre-Philippe, Machicoane, Nathanaël, Moisy, Frédéric, Voisin, Bruno   +3 more
core   +1 more source

Linear modal analysis of L-shaped beam structures [PDF]

, 2013
In this article a theoretical linear modal analysis of Euler-Bernoulli L-shaped beam structures is performed by solving two sets of coupled partial differential equations of motion.
Balachandran, Bolotin, Bux, Cartmell, Ewins, Fotios Georgiades, Jerzy Warminski, Librescu, Matthew P. Cartmell, Nayfeh, Ozonato, Roberts, Warminski   +12 more
core   +1 more source

Structured air lasing of N2+ [PDF]

Commun Phys 6, 97 (2023), 2023
Structured light has attracted great interest in scientific and technical fields. Here, we demonstrate the first generation of structured air lasing in N2+ driven by 800 nm femtosecond laser pulses. By focusing a vortex pump beam at 800 nm in N2 gas, we generate a vortex superfluorescent radiation of N2+ at 391 nm, which carries the same photon orbital
arxiv   +1 more source

Towards linear modal analysis for an L-shaped beam: equations of motion [PDF]

, 2013
We consider an L-shaped beam structure and derive all the equations of motion considering also the rotary inertia terms. We show that the equations are decoupled in two motions, namely the in-plane bending and out-of-plane bending with torsion.
Balachandran, Barbero, Barbero, Cartmell, Fotios Georgiades, Fraternali, Fraternali, Fraternali, Jerzy Warminski, Librescu, Matthew P. Cartmell, Nayfeh, Ozonato, Roberts, Warminski   +14 more
core   +1 more source

Phase induced transparency mediated structured beam generation in a closed-loop tripod configuration [PDF]

Phys. Rev. A 96, 033811 (2017), 2017
We present a phase induced transparency based scheme to generate structured beam patterns in a closed four level atomic system. We employ phase structured probe beam and a transverse magnetic field (TMF) to create phase dependent medium susceptibility. We show that such phase dependent modulation of absorption holds the key to formation of a structured
arxiv   +1 more source

Laser Interaction with a Dielectric Block [PDF]

, 2010
Some optical experiments provide the easiest way to test quantum mechanical predictions. Such a situation applies to a laser beam traversing a dielectric structure. The dielectric structure mir- roring quantum mechanical potentials. The simplest of these,
De Leo, Stefano, Rotelli, Pietro
core   +1 more source