R. Bingham
A5074561257- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Laser-Plasma Interactions and Diagnostics
- Magnetic confinement fusion research
- Laser-induced spectroscopy and plasma
- Astrophysics and Cosmic Phenomena
- Dust and Plasma Wave Phenomena
- Laser-Matter Interactions and Applications
- Astro and Planetary Science
- Particle accelerators and beam dynamics
- Neutrino Physics Research
- Adaptive optics and wavefront sensing
- Cosmology and Gravitation Theories
- Geomagnetism and Paleomagnetism Studies
- High-pressure geophysics and materials
- Plasma Diagnostics and Applications
- Gyrotron and Vacuum Electronics Research
- Gamma-ray bursts and supernovae
- Astronomy and Astrophysical Research
- Earthquake Detection and Analysis
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Fiber Laser Technologies
- Stellar, planetary, and galactic studies
- Atomic and Molecular Physics
- Planetary Science and Exploration
Rutherford Appleton Laboratory
2016-2025
University of Strathclyde
2016-2025
Lamont-Doherty Earth Observatory
2025
Unity Health System
2024
Science and Technology Facilities Council
2008-2023
University of California, San Diego
2010-2023
Manufacturing Advocacy & Growth Network (United States)
2023
Plasma (Russia)
2021
Central Laser Facility
2020
Scottish Universities Physics Alliance
2008-2019
Solitary electrostatic structures involving density depletions have been observed in the upper ionosphere by Freja satellite [ Dovner et al. , 1994]. If these are interpreted as ion sound solitons, difficulty arises that standard Korteweg‐de Vries description predicts with enhanced rather than depleted density. Here we show presence of non‐thermal electrons may change nature solitary and allow existence very like those observed.
Abstract We propose in this White Paper a concept for space experiment using cold atoms to search ultra-light dark matter, and detect gravitational waves the frequency range between most sensitive ranges of LISA terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. This interdisciplinary experiment, called Atomic Experiment Dark Matter Gravity Exploration (AEDGE), will also complement other planned searches exploit synergies with wave detectors. give examples extended sensitivity matter offered...
Abstract Twisted Laguerre–Gaussian lasers, with orbital angular momentum and characterized by doughnut-shaped intensity profiles, provide a transformative set of tools research directions in growing range fields applications, from super-resolution microcopy ultra-fast optical communications to quantum computing astrophysics. The impact twisted light is widening as recent numerical calculations provided solutions long-standing challenges plasma-based acceleration allowing for high-gradient...
Studies of charged-particle acceleration processes remain one the most important areas research in laboratory, space and astrophysical plasmas. In this paper, we present underlying physics status high gradient energy plasma accelerators. We will focus on charged particles to relativistic energies by waves that are created intense laser particle beams. The generation lasers or electron beams plasmas is quest for producing ultra-high gradients With development compact short pulse brightness...
The properties of four-wave interaction via the nonlinear quantum vacuum is investigated. effect to generate photons with new frequencies and wave vectors, due elastic photon-photon scattering. An expression for number generated derived using state-of-the-art laser data it found that can reach detectable levels. In particular, prospect high repetition Astra Gemini system at Rutherford Appleton Laboratory discussed. problem noise sources reviewed, level be reduced well below signal level....
Abstract Magnetic fields are ubiquitous in the Universe. The energy density of these is typically comparable to fluid motions plasma which they embedded, making magnetic essential players dynamics luminous matter. standard theoretical model for origin strong through amplification tiny seed via turbulent dynamo level consistent with current observations. However, experimental demonstration mechanism has remained elusive, since it requires conditions that extremely hard re-create terrestrial...
The Advanced Proton Driven Plasma Wakefield Acceleration Experiment (AWAKE) aims at studying plasma wakefield generation and electron acceleration driven by proton bunches. It is a proof-of-principle R&D experiment CERN the world׳s first experiment. AWAKE will be installed in former CNGS facility uses 400 GeV/c beam bunches from SPS. experiments focus on self-modulation instability of long (rms ~12 cm) bunch plasma. These are planned for end 2016. Later, 2017/2018, low energy (~15 MeV)...
Abstract We summarise the discussions at a virtual Community Workshop on Cold Atoms in Space concerning status of cold atom technologies, prospective scientific and societal opportunities offered by their deployment space, developments needed before atoms could be operated space. The technologies discussed include atomic clocks, quantum gravimeters accelerometers, interferometers. Prospective applications metrology, geodesy measurement terrestrial mass change due to, e.g., climate change,...
The modulational instability of copropagating light waves was studied recently by McKinstrie and Bingham [Phys. Fluids B 1, 230 (1989)], who applied their general theory to the study relativistic (RMI) in beat-wave accelerator. However, rarefied plasma, RMI merges with stimulated Raman forward scattering. longitudinal is suppressed over most its expected range secondary instabilities accelerator must be amended accordingly. A preliminary analysis indicates that backward scattering likely...
Plasma waves excited by intense laser beams can be harnessed to produce femtosecond duration bunches of electrons with relativistic energies. The very large electrostatic forces plasma density wakes trailing behind an pulse provide field potentials capable accelerating charged particles high energies over short distances, as 1GeV in a few millimetres. length scale provides means developing compact high-energy accelerators, which could form the basis next-generation light sources unique...
The cross section for transition scattering of electromagnetic waves on charged dust particles in a plasma is calculated, extending the results previous paper [J. Plasma Phys. 42, 429 (1989)] where case longitudinal has been considered. For nonlinear screening by (i.e., ‖eφ0/Te‖ ≫ 1, φ0 grain surface potential and Te electron temperature), numerical analytical are presented, showing significant enhancement, proportional to square charge, with respect free electrons. effect independent sign...
Abstract. During a 4-week run in October–November 2006, pilot experiment was performed at the CERN Proton Synchrotron preparation for Cosmics Leaving OUtdoor Droplets (CLOUD) experiment, whose aim is to study possible influence of cosmic rays on clouds. The purpose firstly carry out exploratory measurements effect ionising particle radiation aerosol formation from trace H2SO4 vapour and secondly provide technical input CLOUD design. A total 44 nucleation bursts were produced recorded, with...
In this article we review the prospects of laser wakefield accelerators as next generation light sources for applications. This work arose a result discussions held at 2013 Laser Plasma Accelerators Workshop. X-ray phase contrast imaging, x-ray absorption spectroscopy, and nuclear resonance fluorescence are highlighted potential applications laser–plasma based sources. We discuss ongoing future efforts to improve properties radiation from plasma betatron emission Compton scattering using...
New acceleration technology is mandatory for the future elucidation of fundamental particles and their interactions. A promising approach to exploit properties plasmas. Past research has focused on creating large-amplitude plasma waves by injecting an intense laser pulse or electron bunch into plasma. However, maximum energy gain electrons accelerated in a single stage limited driver. Proton bunches are most drivers wakefields accelerate TeV scale stage. An experimental program at CERN—the...
We present a new magnetic field generation mechanism in underdense plasmas driven by the beating of two, co-propagating, Laguerre-Gaussian (LG) orbital angular momentum (OAM) laser pulses with different frequencies and also twist indices. The resulting twisted ponderomotive force drives up an electron plasma wave helical rotating structure. To second order, there is nonlinear current leading to onset intense, static axial field, which persists over long time (ps scale) after have passed by....
We identify and explore a high orbital angular momentum (OAM) harmonics generation amplification mechanism that manipulates the OAM independently of any other laser property, by preserving initial wavelength, through stimulated Raman backscattering in plasma. The spectra can extend at least up to limiting value imposed paraxial approximation. show with theory particle-in-cell simulations orders be tuned according selection rule depends on interacting waves. illustrate plasma using several...
Abstract Detecting thermal Unruh radiation from accelerated electrons has presented a formidable challenge due not only to technical difficulties but also for lack of conceptual clarity about what is actually seen by laboratory observer. We give summary the current interpretations along with simpler heuristic description that draws on analogy between effect and two-level atomic system. propose an experiment test whether there emission photons electron.
Abstract Relativistic electron-positron plasmas are ubiquitous in extreme astrophysical environments such as black-hole and neutron-star magnetospheres, where accretion-powered jets pulsar winds expected to be enriched with pairs. Their role the dynamics of is many cases believed fundamental, but their behavior differs significantly from typical electron-ion due matter-antimatter symmetry charged components. So far, our experimental inability produce large yields positrons quasi-neutral...
We discuss the emission of radiation from general sources in quantum scalar, electromagnetic and gravitational fields using Rindler coordinate frame, which is suitable for a uniformly accelerated observer, Minkowski vacuum. In particular, we point out that, to recover usual Larmor interaction picture, it necessary incorporate Unruh effect. Thus, observation classical could be seen as vindicating effect sense that not correctly reproduced this context unless taken into account.