Publications
312 results found
Krygier AG, Morrison JT, Kar S, et al., 2015, Selective deuterium ion acceleration using the Vulcan petawatt laser, Physics of Plasmas, Vol: 22, ISSN: 1089-7674
We report on the successful demonstration of selective acceleration of deuterium ions by targetnormalsheath acceleration (TNSA) with a high-energy petawatt laser. TNSA typically produces amulti-species ion beam that originates from the intrinsic hydrocarbon and water vapor contaminantson the target surface. Using the method first developed by Morrison et al. [Phys. Plasmas 19,030707 (2012)], an ion beam with >99% deuterium ions and peak energy 14 MeV/nucleon is producedwith a 200 J, 700 fs, >1020W=cm2 laser pulse by cryogenically freezing heavy water (D2O)vapor onto the rear surface of the target prior to the shot. Within the range of our detectors(0!–8.5!), we find laser-to-deuterium-ion energy conversion efficiency of 4.3% above 0.7 MeV/nucleon while a conservative estimate of the total beam gives a conversion efficiency of 9.4%.
Sarri G, Poder K, Cole JM, et al., 2015, Generation of neutral and high-density electron-positron pair plasmas in the laboratory, Nature Communications, Vol: 6, ISSN: 2041-1723
Electron-positron pair plasmas represent a unique state of matter, whereby there exists an intrinsic and complete symmetry between negatively charged (matter) and positively charged (antimatter) particles. These plasmas play a fundamental role in the dynamics of ultra-massive astrophysical objects and are believed to be associated with the emission of ultra-bright gamma-ray bursts. Despite extensive theoretical modelling, our knowledge of this state of matter is still speculative, owing to the extreme difficulty in recreating neutral matter-antimatter plasmas in the laboratory. Here we show that, by using a compact laser-driven setup, ion-free electron-positron plasmas with unique characteristics can be produced. Their charge neutrality (same amount of matter and antimatter), high-density and small divergence finally open up the possibility of studying electron-positron plasmas in controlled laboratory experiments.
Seely J, Feldman U, Hudson L, et al., 2015, Betatron x-ray spectra recorded by a transmission crystal spectrometer in the 10 keV to 70 keV photon energy range
Alejo A, Kar S, Ahmed H, et al., 2015, Generation of high-flux neutron beam from radiation pressure driven deuterium ion bunches
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- Citations: 1
Palmer CAJ, Dover NP, Pogorelsky I, et al., 2015, Manipulation of laser-generated energetic proton spectra in near critical density plasma, JOURNAL OF PLASMA PHYSICS, Vol: 81, ISSN: 0022-3778
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- Citations: 3
Willingale L, Nagel SR, Thomas AGR, et al., 2015, Characterization of laser-driven proton beams from near-critical density targets using copper activation, JOURNAL OF PLASMA PHYSICS, Vol: 81, ISSN: 0022-3778
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- Citations: 1
Pogorelsky IV, Ben-Zvi I, Skaritka J, et al., 2015, New opportunities for strong-field LPI research in the mid-IR, Conference on Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 2
Sarri G, Corvan DJ, Cole JM, et al., 2015, Laser-driven Thomson scattering for the generation of ultra-bright multi-MeV gamma-ray beams, Conference on Laser Acceleration of Electrons, Protons, and Ions III and Medical Applications of Laser-Generated Beams of Particles III, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 1
Chen Y-H, Helle MH, Ting A, et al., 2015, Observation of monoenergetic protons from a near-critical gas target tailored by a hydrodynamic shock, Conference on Laser Acceleration of Electrons, Protons, and Ions III and Medical Applications of Laser-Generated Beams of Particles III, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 4
Sarri G, Corvan DJ, Schumaker W, et al., 2014, Ultrahigh brilliance multi-MeV gamma-Ray beams from nonlinear relativistic Thomson scattering, Physical Review Letters, Vol: 113, Pages: 1-5, ISSN: 0031-9007
We report on the generation of a narrow divergence (θγ<2.5 mrad), multi-MeV (Emax≈18 MeV) and ultrahigh peak brilliance (>1.8×1020 photons s−1 mm−2 mrad−2 0.1% BW) γ-ray beam from the scattering of an ultrarelativistic laser-wakefield accelerated electron beam in the field of a relativistically intense laser (dimensionless amplitude a0≈2). The spectrum of the generated γ-ray beam is measured, with MeV resolution, seamlessly from 6 to 18 MeV, giving clear evidence of the onset of nonlinear relativistic Thomson scattering. To the best of our knowledge, this photon source has the highest peak brilliance in the multi-MeV regime ever reported in the literature.
Alejo A, Kar S, Ahmed H, et al., 2014, Characterisation of deuterium spectra from laser driven multi-species sources by employing differentially filtered image plate detectors in Thomson spectrometers, REVIEW OF SCIENTIFIC INSTRUMENTS, Vol: 85, ISSN: 0034-6748
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- Citations: 32
Kamperidis C, Dimitriou V, Mangles SPD, et al., 2014, Low energy spread electron beams from ionization injection in a weakly relativistic laser wakefield accelerator, PLASMA PHYSICS AND CONTROLLED FUSION, Vol: 56, ISSN: 0741-3335
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- Citations: 14
Assmann R, Bingham R, Bohl T, et al., 2014, Proton-driven plasma wakefield acceleration: a path to the future of high-energy particle physics, PLASMA PHYSICS AND CONTROLLED FUSION, Vol: 56, ISSN: 0741-3335
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- Citations: 56
Albert F, Thomas AGR, Mangles SPD, et al., 2014, Laser wakefield accelerator based light sources: potential applications and requirements, PLASMA PHYSICS AND CONTROLLED FUSION, Vol: 56, ISSN: 0741-3335
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- Citations: 70
Green JS, Dover NP, Borghesi M, et al., 2014, Enhanced proton beam collimation in the ultra-intense short pulse regime, PLASMA PHYSICS AND CONTROLLED FUSION, Vol: 56, ISSN: 0741-3335
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- Citations: 17
Guillaume E, Humphrey K, Nakamura H, et al., 2014, Demonstration of laser pulse amplification by stimulated Brillouin scattering, HIGH POWER LASER SCIENCE AND ENGINEERING, Vol: 2, ISSN: 2095-4719
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- Citations: 23
Schreiber J, Bell F, Najmudin Z, 2014, Optimization of relativistic laser-ion acceleration, HIGH POWER LASER SCIENCE AND ENGINEERING, Vol: 2, ISSN: 2095-4719
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- Citations: 12
Muggli P, Najmudin Z, 2014, Summary of working group 1: Electron beams from plasmas, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol: 740, Pages: 39-41, ISSN: 0168-9002
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- Citations: 1
Najmudin Z, Kneip S, Bloom MS, et al., 2014, Compact laser accelerators for X-ray phase-contrast imaging, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 372, ISSN: 1364-503X
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- Citations: 28
Gwynne D, Kar S, Doria D, et al., 2014, Modified Thomson spectrometer design for high energy, multi-species ion sources, REVIEW OF SCIENTIFIC INSTRUMENTS, Vol: 85, ISSN: 0034-6748
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- Citations: 18
McKenna P, Borghesi M, Neely D, et al., 2014, Progress in Laser-Driven Ion Acceleration towards Applications in Radiotherapy
We will outline recent progress, in the UK ASAIL laser-ion acceleration programme, which aims to advance laser-driven ion beams to the point at which they will become a serious alternative to conventional accelerators for radiotherapy. © 2014 OSA.
Mangles SPD, Bloom MS, Bryant J, et al., 2014, Producing bright X-rays for imaging applications using a laser wakefield accelerator
We report on the generation of bright multi-keV betatron X-ray radiation using a GeV laser wakefield accelerator and investigate the use of these X-rays for various imaging applications.
Mangles SPD, Bloom MS, Bryant J, et al., 2014, Producing bright X-rays for imaging applications using a laser wakefield accelerator
We report on the generation of bright multi-keV betatron X-ray radiation using a GeV laser wakefield accelerator and investigate the use of these X-rays for various imaging applications. © 2014 Optical Society of America.
, 2014, Producing bright X-rays for imaging applications using a laser wakefield accelerator
We report on the generation of bright multi-keV betatron X-ray radiation using a GeV laser wakefield accelerator and investigate the use of these X-rays for various imaging applications. © 2014 Optical Society of America.
McKenna P, Borghesi M, Neely D, et al., 2014, Progress in Laser-Driven Ion Acceleration towards Applications in Radiotherapy
We will outline recent progress, in the UK ASAIL laser-ion acceleration programme, which aims to advance laser-driven ion beams to the point at which they will become a serious alternative to conventional accelerators for radiotherapy. © 2014 OSA.
Najmudin Z, 2014, Laser wakefield accelerators, Pages: 109-118
The one-dimensional wakefield generation equations are solved for increasing levels of non-linearity, to demonstrate how they contribute to the overall behaviour of a non-linear wakefield in a plasma. The effect of laser guiding is also studied as a way to increase the interaction length of a laser wakefield accelerator.
Osterhoff J, Najmudin Z, Faure J, 2014, Case studies on plasma wakefield accelerator design, Pages: 301-308
The field of plasma-based particle accelerators has seen tremendous progress over the past decade and experienced significant growth in the number of activities. During this process, the involved scientific community has expanded from traditional university-based research and is now encompassing many large research laboratories worldwide, such as BNL, CERN, DESY, KEK, LBNL and SLAC. As a consequence, there is a strong demand for a consolidated effort in education at the intersection of accelerator, laser and plasma physics. The CERN Accelerator School on Plasma Wake Acceleration has been organized as a result of this development. In this paper, we describe the interactive component of this one-week school, which consisted of three case studies to be solved in 11 working groups by the participants of the CERN Accelerator School.
Mangles SPD, Bloom MS, Bryant J, et al., 2014, Producing bright X-rays for imaging applications using a laser wakefield accelerator, Conference on Lasers and Electro-Optics (CLEO), Publisher: IEEE, ISSN: 2160-9020
McKenna P, Borghesi M, Neely D, et al., 2014, Progress in Laser-Driven Ion Acceleration towards Applications in Radiotherapy, Conference on Lasers and Electro-Optics (CLEO), Publisher: IEEE, ISSN: 2160-9020
Sarri G, Schumaker W, Di Piazza A, et al., 2013, Laser-driven generation of collimated ultra-relativistic positron beams, 40th Conference of the European-Physical-Society on Plasma Physics, Publisher: IOP PUBLISHING LTD, ISSN: 0741-3335
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- Citations: 29
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