Effects of front-surface target structures on properties of relativistic laser-plasma electrons

Jiang, Sheng; Krygier, A.; Schumacher, Douglass; Akli, K. U.; Freeman, R. R.

doi:10.1103/physreve.89.013106

Cited by 59 publications

(64 citation statements)

References 69 publications

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“…Front surface structures, such as towers and near-critical density plasmas, have shown an enhancement in proton energy as well [15][16][17][18] . Micro-wire array targets were suggested to create a highly directed energetic electron beam with enhanced bremsstrahlung radiation 19,20 . The use of hollow cylindrical targets has been demonstrated to produce bright x-rays and attosecond pulses 21, 22 .…”

Section: Introductionmentioning

confidence: 99%

Enhancement of laser intensity and proton acceleration using micro-tube plasma lens targets

Snyder

Akli

2016

Physics of Plasmas

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A hollow cylindrical micron-scale structure is proposed to enhance and manipulate the laser plasma interaction. It is shown through 3-D particle-in-cell simulations that the incident laser pulse intensity is enhanced within the tube. A detailed study of the intensification optimizes the tube dimensions and provides a characterization of the in-tube intensity. By coupling the micro-tube plasma lens to a traditional flat interface, we show an increase in on-target intensity. We detail proton energy enhancement as a potential application of the micro-tube plasma lens target, where the tube structure acts to focus the light and provide additional electrons that enhance the accelerating sheath field.

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Section: Introductionmentioning

confidence: 99%

Enhancement of laser intensity and proton acceleration using micro-tube plasma lens targets

Snyder

Akli

2016

Physics of Plasmas

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“…The narrowing of the electron angular distribution occurs due to guiding by the structures as explained in [42]. The electrons are guided along the structures by counteracting quasistatic magnetic and electric fields which arise due to the large currents and charge separation in the plasma.…”

Section: B Electron Angular Distributionmentioning

confidence: 99%

“…The physics behind the enhancements by the tower targets is discussed thoroughly in [42]. The enhancement to the energy distribution arises because electrons are injected directly into the laser field from the solid density target rather than from low density pre-plasma near the critical surface.…”

Section: B Electron Angular Distributionmentioning

confidence: 99%

“…In previous work [42], we proposed a new method of enhancing the energy and directionality of the laser generated hot electrons. Rather than using higher energy, more intense lasers, we investigated novel target designs that are shown with 3D PIC simulations to dramatically alter and substantially increase the number of relativistic electrons produced in the laser-plasma interaction.…”

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confidence: 99%

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Enhancing Bremsstrahlung production from ultraintense laser-solid interactions with front surface structures

et al. 2014

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We report the results of a combined study of particle-in-cell and Monte Carlo modeling that investigates the production of Bremsstrahlung radiation produced when an ultraintense laser interacts with a tower-structured target. These targets are found to significantly narrow the electron angular distribution as well as produce significantly higher energies. These features combine to create a significant enhancement in directionality and energy of the Bremstrahlung radiation produced by a high-Z converter target. These studies employ short-pulse, high intensity laser pulses, and indicate that novel target design has potential to greatly enhance the yield and narrow the directionality of high energy electrons and γ-rays. We find that the peak γ-ray brightness for this source is 6.0×10 19 s −1 mm −2 mrad −2 at 10MeV and 1.4×10 19 s −1 mm −2 mrad −2 at 100MeV (0.1% bandwidth).

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“…Further studies have shown that electrons can also be guided by the cylinders due to the self-generated electrostatic and magnetic fields in the vicinity of the structures [14] .…”

Section: Micro-cylinder Targets-manipulating Laser-electron Accelerationmentioning

confidence: 99%

Exploring novel target structures for manipulating relativistic laser–plasma interaction

Jiang

Pukhov

et al. 2017

High Pow Laser Sci Eng

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The improved laser-to-pedestal contrast ratio enabled by current high-power laser pulse cleaning techniques allows the fine features of the target survive before the main laser pulse arrives. We propose to introduce the nano-fabrication technologies into laser-plasma interaction to explore the novel effects of micro-structures. We found out that not only laser-driven particle sources but also the laser pulse itself can be manipulated by specifically designed micro-cylinder and -tube targets, respectively. The proposal was supported by full-3D particle-in-cell simulations and successful proofof-principle experiments for the first time. We believe this would open a way to manipulate relativistic laser-plasma interaction at the micro-size level.

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Effects of front-surface target structures on properties of relativistic laser-plasma electrons

Cited by 59 publications

References 69 publications

Enhancement of laser intensity and proton acceleration using micro-tube plasma lens targets

Enhancement of laser intensity and proton acceleration using micro-tube plasma lens targets

Enhancing Bremsstrahlung production from ultraintense laser-solid interactions with front surface structures

Exploring novel target structures for manipulating relativistic laser–plasma interaction

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