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9 research outcomes, page 1 of 1
  • publication . Article . Other literature type . 2019
    Open Access English
    Authors:
    Kokurewicz, K.; Brunetti, E.; Welsh, G. H.; Wiggins, S. M.; Boyd, M.; Sorensen, A.; Chalmers, A. J.; Schettino, G.; Subiel, A.; DesRosiers, C.; ...
    Publisher: Nature Research
    Project: EC | EuPRAXIA (653782), EC | LASERLAB-EUROPE (654148), RCUK | CRITICAL MASS: Collective... (EP/J018171/1), RCUK | Lab in a bubble (EP/N028694/1), EC | ARIES (730871), EC | EUCARD-2 (312453), RCUK | Application of Next Gener... (EP/J500094/1)

    Abstract The increased inertia of very high-energy electrons (VHEEs) due to relativistic effects reduces scattering and enables irradiation of deep-seated tumours. However, entrance and exit doses are high for collimated or diverging beams. Here, we perform a study base...

  • publication . Article . Other literature type . 2017
    Open Access English
    Authors:
    Ross Gray; Gregor H Welsh; Paul McKenna; Robbie Wilson; Panagiotis DELINIKOLAS;
    Publisher: Nature Publishing Group
    Project: RCUK | Multi-scale simulation of... (EP/G054940/1), RCUK | Multi-PetaWatt Laser-Plas... (EP/J003832/1), RCUK | Multi-scale simulation of... (EP/G055165/1), RCUK | Lab in a bubble (EP/N028694/1), RCUK | CRITICAL MASS: Collective... (EP/J018171/1), EC | LASERLAB-EUROPE (284464), EC | EUCARD-2 (312453), RCUK | Multi-scale simulation of... (EP/G056803/1)

    Space radiation is a great danger to electronics and astronauts onboard space vessels. The spectral flux of space electrons, protons and ions for example in the radiation belts is inherently broadband, but this is a feature hard to mimic with conventional radiation sour...

  • publication . Article . Other literature type . 2015
    Open Access English
    Authors:
    Gregor H Welsh; Samuel R. Yoffe; John Farmer;
    Project: RCUK | CRITICAL MASS: Collective... (EP/J018171/1), EC | LASERLAB-EUROPE (284464), EC | EUCARD-2 (312453)

    Stimulated Raman backscattering in plasma is potentially an efficient method of amplifying laser pulses to reach exawatt powers because plasma is fully broken down and withstands extremely high electric fields. Plasma also has unique nonlinear optical properties that al...

  • publication . Preprint . 2016
    Open Access English
    Authors:
    Kwon, Kyu Been; Kang, Teyoun; Song, Hyung Seon; Kim, Young-Kuk; Ersfeld, Bernhard; Jaroszynski, Dino A.; Hur, Min Sup;
    Project: EC | LASERLAB-EUROPE (284464), EC | EUCARD-2 (312453), RCUK | CRITICAL MASS: Collective... (EP/J018171/1)

    Plasma dipole oscillation (PDO) depicted as harmonic motion of a spatially localized block of electrons has, until now, been hypothetical. In practice, the plasma oscillation occurs always as a part of a plasma wave. Studies on radiation burst from plasmas have focused ...

  • publication . Article . Preprint . 2020
    Open Access
    Authors:
    M. M. R. Chishti; D. O’Donnell; G. Battaglia; M. Bowry; D. A. Jaroszynski; B. S. Nara Singh; M. Scheck; P. Spagnoletti; J. F. Smith;
    Publisher: Springer Science and Business Media LLC
    Project: RCUK | CRITICAL MASS: Collective... (EP/J018171/1), EC | LASERLAB-EUROPE (654148), EC | EUCARD-2 (312453), EC | EuPRAXIA (653782), RCUK | Application of Next Gener... (EP/J500094/1), EC | ARIES (730871)

    It is now well established that atomic nuclei composed of certain combinations of protons and neutrons can adopt reflection-asymmetric, or octupole-deformed, shapes at low excitation energy. These nuclei show promise in the search for a permanent atomic electric dipole ...

  • publication . Article . 2017
    Open Access English
    Authors:
    Gregor H Welsh; Feiyu Li;
    Project: EC | LASERLAB-EUROPE (654148), RCUK | CRITICAL MASS: Collective... (EP/J018171/1), RCUK | Lab in a bubble (EP/N028694/1), EC | EuPRAXIA (653782), RCUK | Application of Next Gener... (EP/J500094/1), EC | LASERLAB-EUROPE (284464), EC | EUCARD-2 (312453), RCUK | West of Scotland Supercom... (EP/K000586/1)

    Laser-wakefield accelerators are compact devices capable of delivering ultra-short electron bunches with pC-level charge and MeV-GeV energy by exploiting the ultra-high electric fields arising from the interaction of intense laser pulses with plasma. We show experimenta...

  • publication . Article . Other literature type . 2018
    Open Access
    Authors:
    Kwon, Kyu Been; Kang, Teyoun; Song, Hyung Seon; Kim, Young-Kuk; Ersfeld, Bernhard; Jaroszynski, Dino A.; Hur, Min Sup;
    Publisher: Springer Science and Business Media LLC
    Project: RCUK | CRITICAL MASS: Collective... (EP/J018171/1), EC | LASERLAB-EUROPE (654148), EC | EUCARD-2 (312453), RCUK | Lab in a bubble (EP/N028694/1)

    Abstract Emission of radiation from electrons undergoing plasma oscillations (POs) at the plasma frequency has attracted interest because of the existence of intriguing and non-trivial coupling mechanism between the electrostatic PO and the emitted electromagnetic wave....

  • publication . Article . 2017
    Open Access English
    Authors:
    Adam Noble;
    Publisher: Nature Publishing Group
    Project: RCUK | Lab in a bubble (EP/N028694/1), EC | LASERLAB-EUROPE (284464), RCUK | CRITICAL MASS: Collective... (EP/J018171/1), EC | EUCARD-2 (312453)

    Ultra-intense, narrow-bandwidth, electromagnetic pulses have become important tools for exploring the characteristics of matter. Modern tuneable high-power light sources, such as free-electron lasers and vacuum tubes, rely on bunching of relativistic or near-relativisti...

  • publication . Article . 2014
    Open Access English
    Authors:
    Gregor H Welsh; Richard Shanks; Anna Subiel;
    Project: EC | LASERLAB-EUROPE (284464), EC | LASERLAB-EUROPE (228334), RCUK | CRITICAL MASS: Collective... (EP/J018171/1), EC | EUCARD-2 (312453)

    Electron beams from laser-plasma wakefield accelerators have low transverse emittance, comparable to those from conventional radio frequency accelerators, which highlights their potential for applications, many of which will require the use of quadrupole magnets for opt...

9 research outcomes, page 1 of 1
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