B. Kettle
YOU?
Author Swipe
View article: Single-Shot Reconstruction of Electron Beam Longitudinal Phase Space in a Laser Wakefield Accelerator
Single-Shot Reconstruction of Electron Beam Longitudinal Phase Space in a Laser Wakefield Accelerator Open
We report on a single-shot longitudinal phase-space reconstruction diagnostic for electron beams in a laser wakefield accelerator via the experimental observation of distinct periodic modulations in the angularly resolved spectra. Such mod…
View article: Single-pulse Gy-scale irradiation of biological cells at 10<sup>13</sup> Gy s<sup>−1</sup> average dose-rates from a laser-wakefield accelerator
Single-pulse Gy-scale irradiation of biological cells at 10<sup>13</sup> Gy s<sup>−1</sup> average dose-rates from a laser-wakefield accelerator Open
Objective. We report on the first experimental characterisation of a laser-wakefield accelerator able to deliver, in a single pulse, doses in excess of 1 Gy on timescales of the order of a hundred femtoseconds, reaching unprecedented avera…
View article: Multi-messenger dynamic imaging of laser-driven shocks in water using a plasma wakefield accelerator
Multi-messenger dynamic imaging of laser-driven shocks in water using a plasma wakefield accelerator Open
Understanding dense matter hydrodynamics is critical for predicting plasma behavior in environments relevant to laser-driven inertial confinement fusion. Traditional diagnostic sources face limitations in brightness, spatiotemporal resolut…
View article: Roadmap for warm dense matter physics
Roadmap for warm dense matter physics Open
This roadmap presents the state-of-the-art, current challenges and near future developments anticipated in the thriving field of warm dense matter physics. Originating from strongly coupled plasma physics, high pressure physics and high en…
View article: Multi-messenger dynamic imaging of laser-driven shocks in water using a plasma wakefield accelerator
Multi-messenger dynamic imaging of laser-driven shocks in water using a plasma wakefield accelerator Open
Understanding dense fuel hydrodynamics is critical for predicting burning plasma behavior in laser-driven inertial confinement fusion. Traditional diagnostic sources face many limitations in brightness, spatio-temporal resolution, and thei…
View article: Angularly resolved spectral reconstruction of x rays via filter pack attenuation
Angularly resolved spectral reconstruction of x rays via filter pack attenuation Open
We have designed a new filter pack array to measure angular variations in x-ray spectra during a single shot. The filter pack was composed of repeating identical columns of aluminum and copper filters of varying thicknesses. These columns …
View article: A laser-plasma platform for photon-photon physics: the two photon Breit-Wheeler process, and Bounding elastic photon-photon scattering at $\sqrt s \approx 1$\,MeV using a laser-plasma platform
A laser-plasma platform for photon-photon physics: the two photon Breit-Wheeler process, and Bounding elastic photon-photon scattering at $\sqrt s \approx 1$\,MeV using a laser-plasma platform Open
The data contained in this repository was used in the production of the publication "A laser-plasma platform for photon-photon physics: the two photon Breit-Wheeler process" (https://doi.org/10.1088/1367-2630/ac3048) and "Bounding elastic …
View article: Bounding elastic photon-photon scattering at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:msqrt><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msqrt><mml:mo>≈</mml:mo><mml:mn>1</mml:mn></mml:math> MeV using a laser-plasma platform
Bounding elastic photon-photon scattering at MeV using a laser-plasma platform Open
International audience
View article: A Bayesian framework to investigate radiation reaction in strong fields
A Bayesian framework to investigate radiation reaction in strong fields Open
Recent experiments aiming to measure phenomena predicted by strong-field quantum electrodynamics (SFQED) have done so by colliding relativistic electron beams and high-power lasers. In such experiments, measurements of collision parameters…
View article: Target sensitivity study of density transition-injected electrons in laser wakefield accelerators
Target sensitivity study of density transition-injected electrons in laser wakefield accelerators Open
While plasma-based accelerators have the potential to positively impact a broad range of research topics, a route to application will only be possible through improved understanding of their stability. We present experimental results of a …
View article: Single-pulse Gy-scale irradiation of biological cells at $10^{13}$ Gy/s average dose-rates from a laser-wakefield accelerator
Single-pulse Gy-scale irradiation of biological cells at $10^{13}$ Gy/s average dose-rates from a laser-wakefield accelerator Open
We report on the first experimental characterization of a laser-wakefield accelerator able to deliver, in a single pulse, doses in excess of \unit[1]{Gy} on timescales of the order of a hundred femtoseconds, reaching unprecedented average …
View article: Extended X-ray absorption spectroscopy using an ultrashort pulse laboratory-scale laser-plasma accelerator
Extended X-ray absorption spectroscopy using an ultrashort pulse laboratory-scale laser-plasma accelerator Open
Laser-driven compact particle accelerators can provide ultrashort pulses of broadband X-rays, well suited for undertaking X-ray absorption spectroscopy measurements on a femtosecond timescale. Here the Extended X-ray Absorption Fine Struct…
View article: Bounding elastic photon-photon scattering at $\sqrt s \approx 1\,$MeV using a laser-plasma platform
Bounding elastic photon-photon scattering at $\sqrt s \approx 1\,$MeV using a laser-plasma platform Open
We report on a direct search for elastic photon-photon scattering using x-ray and $\gamma$ photons from a laser-plasma based experiment. A gamma photon beam produced by a laser wakefield accelerator provided a broadband gamma spectrum exte…
View article: Observation of quantum effects on radiation reaction in strong fields
Observation of quantum effects on radiation reaction in strong fields Open
Radiation reaction, the force experienced by an accelerated charge due to radiation emission, has long been the subject of extensive theoretical and experimental research. Experimental verification of a quantum, strong-field description of…
View article: Single-Shot Diagnosis of Electron Energy Evolution via Streaked Betatron X Rays in a Curved Laser Wakefield Accelerator
Single-Shot Diagnosis of Electron Energy Evolution via Streaked Betatron X Rays in a Curved Laser Wakefield Accelerator Open
We report on an experimental observation of the streaking of betatron x rays in a curved laser wakefield accelerator. The streaking of the betatron x rays was realized by launching a laser pulse into a plasma with a transverse density grad…
View article: Generation of photoionized plasmas in the laboratory of relevance to accretion-powered x-ray sources using keV line radiation
Generation of photoionized plasmas in the laboratory of relevance to accretion-powered x-ray sources using keV line radiation Open
We describe laboratory experiments to generate x-ray photoionized plasmas of relevance to accretion-powered x-ray sources such as neutron star binaries and quasars, with significant improvements over previous work. A key quantity is refere…
View article: Narrow bandwidth, low-emittance positron beams from a laser-wakefield accelerator
Narrow bandwidth, low-emittance positron beams from a laser-wakefield accelerator Open
View article: K-Edge Structure in Shock-Compressed Chlorinated Parylene
K-Edge Structure in Shock-Compressed Chlorinated Parylene Open
We have carried out a series of experiments to measure the Cl K-absorption edge for shock-compressed samples of chlorinated parylene. Colliding shocks allowed us to compress samples up to four times the initial density with temperatures up…
View article: Generation of photoionized plasmas in the laboratory of relevance to accretion-powered x-ray sources using keV line radiation
Generation of photoionized plasmas in the laboratory of relevance to accretion-powered x-ray sources using keV line radiation Open
We describe laboratory experiments to generate X-ray photoionized plasmas of relevance to accretion-powered X-ray sources such as neutron star binaries and quasars, with significant improvements over previous work. A key quantity is refere…
View article: Extended X-ray absorption spectroscopy using an ultrashort pulse laboratory-scale laser-plasma accelerator
Extended X-ray absorption spectroscopy using an ultrashort pulse laboratory-scale laser-plasma accelerator Open
Laser-driven compact particle accelerators can provide ultrashort pulses of broadband X-rays, well suited for undertaking X-ray absorption spectroscopy measurements on a femtosecond timescale. Here the Extended X-ray Absorption Fine Struct…
View article: Extended X-ray absorption spectroscopy using an ultrashort pulse laboratory-scale laser-plasma accelerator
Extended X-ray absorption spectroscopy using an ultrashort pulse laboratory-scale laser-plasma accelerator Open
The data contained in this repository was used in the production of the publication "Extended X-ray absorption spectroscopy using an ultrashort pulse laboratory-scale laser-plasma accelerator"
View article: Extended X-ray absorption spectroscopy using an ultrashort pulse laboratory-scale laser-plasma accelerator
Extended X-ray absorption spectroscopy using an ultrashort pulse laboratory-scale laser-plasma accelerator Open
<p>The data contained in this repository was used in the production of the publication "Extended X-ray absorption spectroscopy using an ultrashort pulse laboratory-scale laser-plasma accelerator"</p>
View article: X-ray Pump-Probe Measurements using a Laser-Plasma Accelerator (Final Report)
X-ray Pump-Probe Measurements using a Laser-Plasma Accelerator (Final Report) Open
This project funded one graduate student, Mario Balcazar, to perform experiments on high power laser facilities to study the application of X-rays generated by laser wakefield accelerated electrons for advanced radiography, in particular X…
View article: Monte Carlo modeling of the linear Breit-Wheeler process within the geant4 framework
Monte Carlo modeling of the linear Breit-Wheeler process within the geant4 framework Open
A linear Breit-Wheeler module for the code geant4 has been developed. This allows signal-to-noise ratio calculations of linear Breit-Wheeler detection experiments to be performed within a single framework. The interaction between two photo…
View article: Laser Wakefield Accelerator modelling with Variational Neural Networks
Laser Wakefield Accelerator modelling with Variational Neural Networks Open
A machine learning model was created to predict the electron spectrum generated by a GeV-class laser wakefield accelerator. The model was constructed from variational convolutional neural networks, which mapped the results of secondary las…
View article: Generation of Photoionized Plasmas in the Laboratory of Relevance to Accretion-Powered X-Ray Sources Using Kev Line Radiation
Generation of Photoionized Plasmas in the Laboratory of Relevance to Accretion-Powered X-Ray Sources Using Kev Line Radiation Open
View article: Narrow bandwidth, low-emittance positron beams from a laser-wakefield accelerator
Narrow bandwidth, low-emittance positron beams from a laser-wakefield accelerator Open
Laser-wakefield accelerated electron beams have been demonstrated to be a viable alternative to those produced by radio-frequency systems, with unique characteristics including intrinsic femtosecond-scale duration and micron-scale source s…
View article: Characterization of laser wakefield acceleration efficiency with octave spanning near-IR spectrum measurements
Characterization of laser wakefield acceleration efficiency with octave spanning near-IR spectrum measurements Open
We report on experimental measurements of energy transfer efficiencies in a GeV-class laser wakefield accelerator. Both the transfer of energy from the laser to the plasma wakefield and from the plasma to the accelerated electron beam was …
View article: Characterisation of Laser Wakefield Acceleration Efficiency with Octave Spanning Near-IR Spectrum Measurements
Characterisation of Laser Wakefield Acceleration Efficiency with Octave Spanning Near-IR Spectrum Measurements Open
The dataset and analysis codes for the publication "Characterisation of Laser Wakefield Acceleration Efficiency with Octave Spanning Near-IR Spectrum Measurements". Analysis code is stored as jupyter notebooks.
View article: Transverse oscillating bubble enhanced laser-driven betatron X-ray radiation generation
Transverse oscillating bubble enhanced laser-driven betatron X-ray radiation generation Open
Ultrafast high-brightness X-ray pulses have proven invaluable for a broad range of research. Such pulses are typically generated via synchrotron emission from relativistic electron bunches using large-scale facilities. Recently, significan…