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Showing 1 to 12 of 90 entries
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Characteristics of betatron radiation from direct-laser-accelerated electrons.

Physical review. E

Huang TW, Robinson AP, Zhou CT, Qiao B, Liu B, Ruan SC, He XT, Norreys PA.
PMID: 27415373
Phys Rev E. 2016 Jun;93(6):063203. doi: 10.1103/PhysRevE.93.063203. Epub 2016 Jun 08.

Betatron radiation from direct-laser-accelerated electrons is characterized analytically and numerically. It is shown here that the electron dynamics is strongly dependent on a self-similar parameter S(≡n_{e}/n_{c}a_{0}). Both the electron transverse momentum and energy are proportional to the normalized amplitude...

Amplification and generation of ultra-intense twisted laser pulses via stimulated Raman scattering.

Nature communications

Vieira J, Trines RM, Alves EP, Fonseca RA, Mendonça JT, Bingham R, Norreys P, Silva LO.
PMID: 26817620
Nat Commun. 2016 Jan 28;7:10371. doi: 10.1038/ncomms10371.

Twisted Laguerre-Gaussian lasers, with orbital angular momentum and characterized by doughnut-shaped intensity profiles, provide a transformative set of tools and research directions in a growing range of fields and applications, from super-resolution microcopy and ultra-fast optical communications to quantum...

Proton acceleration from high-intensity laser interactions with thin foil targets.

Physical review letters

Zepf M, Clark EL, Beg FN, Clarke RJ, Dangor AE, Gopal A, Krushelnick K, Norreys PA, Tatarakis M, Wagner U, Wei MS.
PMID: 12633296
Phys Rev Lett. 2003 Feb 14;90(6):064801. doi: 10.1103/PhysRevLett.90.064801. Epub 2003 Feb 13.

Measurements of energetic proton production resulting from the interaction of high-intensity laser pulses with foil targets are described. Through the use of layered foil targets and heating of the target material we are able to distinguish three distinct populations...

Experimental study of proton emission from 60-fs, 200-mJ high-repetition-rate tabletop-laser pulses interacting with solid targets.

Physical review. E, Statistical, nonlinear, and soft matter physics

Spencer I, Ledingham KW, McKenna P, McCanny T, Singhal RP, Foster PS, Neely D, Langley AJ, Divall EJ, Hooker CJ, Clarke RJ, Norreys PA, Clark EL, Krushelnick K, Davies JR.
PMID: 12786496
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Apr;67(4):046402. doi: 10.1103/PhysRevE.67.046402. Epub 2003 Apr 24.

Measurements of proton emission have been made from a variety of solid targets irradiated by a 60-fs, 200-mJ, 7 x 10(18)-W cm(-2) laser system operating at 2 Hz. Optimum target conditions were found in terms of target material and...

Explanations for the observed increase in fast electron penetration in laser shock compressed materials.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics

Batani D, Davies JR, Bernardinello A, Pisani F, Koenig M, Hall TA, Ellwi S, Norreys P, Rose S, Djaoui A, Neely D.
PMID: 11031632
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 2000 May;61(5):5725-33. doi: 10.1103/physreve.61.5725.

We analyze recent experimental results on the increase of fast electron penetration in shock compressed plastic [Phys. Rev. Lett. 81, 1003 (1998)]. It is explained by a combination of stopping power and electric field effects, which appear to be...

A route to the brightest possible neutron source?.

Science (New York, N.Y.)

Taylor A, Dunne M, Bennington S, Ansell S, Gardner I, Norreys P, Broome T, Findlay D, Nelmes R.
PMID: 17322053
Science. 2007 Feb 23;315(5815):1092-5. doi: 10.1126/science.1127185.

We review the potential to develop sources for neutron scattering science and propose that a merger with the rapidly developing field of inertial fusion energy could provide a major step-change in performance. In stark contrast to developments in synchrotron...

Broad energy spectrum of laser-accelerated protons for spallation-related physics.

Physical review letters

McKenna P, Ledingham KW, Shimizu S, Yang JM, Robson L, McCanny T, Galy J, Magill J, Clarke RJ, Neely D, Norreys PA, Singhal RP, Krushelnick K, Wei MS.
PMID: 15783897
Phys Rev Lett. 2005 Mar 04;94(8):084801. doi: 10.1103/PhysRevLett.94.084801. Epub 2005 Mar 04.

A beam of MeV protons, accelerated by ultraintense laser-pulse interactions with a thin target foil, is used to investigate nuclear reactions of interest for spallation physics. The laser-generated proton beam is shown (protons were measured) to have a broad...

Characterization of proton and heavier ion acceleration in ultrahigh-intensity laser interactions with heated target foils.

Physical review. E, Statistical, nonlinear, and soft matter physics

McKenna P, Ledingham KW, Yang JM, Robson L, McCanny T, Shimizu S, Clarke RJ, Neely D, Spohr K, Chapman R, Singhal RP, Krushelnick K, Wei MS, Norreys PA.
PMID: 15524644
Phys Rev E Stat Nonlin Soft Matter Phys. 2004 Sep;70(3):036405. doi: 10.1103/PhysRevE.70.036405. Epub 2004 Sep 21.

Proton and heavy ion acceleration in ultrahigh intensity ( approximately 2 x 10(20) W cm(-2) ) laser plasma interactions has been investigated using the new petawatt arm of the VULCAN laser. Nuclear activation techniques have been applied to make...

The generation of mono-energetic electron beams from ultrashort pulse laser-plasma interactions.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

Mangles SP, Krushelnick K, Najmudin Z, Wei MS, Walton B, Gopal A, Dangor AE, Fritzler S, Murphy CD, Thomas AG, Mori WB, Gallacher J, Jaroszynski D, Norreys PA, Viskup R.
PMID: 16483956
Philos Trans A Math Phys Eng Sci. 2006 Mar 15;364(1840):663-77. doi: 10.1098/rsta.2005.1730.

The physics of the interaction of high-intensity laser pulses with underdense plasma depends not only on the interaction intensity but also on the laser pulse length. We show experimentally that as intensities are increased beyond 10(20) W cm(-2) the...

Laser-driven fast electron collimation in targets with resistivity boundary.

Physical review letters

Ramakrishna B, Kar S, Robinson AP, Adams DJ, Markey K, Quinn MN, Yuan XH, McKenna P, Lancaster KL, Green JS, Scott RH, Norreys PA, Schreiber J, Zepf M.
PMID: 21230778
Phys Rev Lett. 2010 Sep 24;105(13):135001. doi: 10.1103/PhysRevLett.105.135001. Epub 2010 Sep 20.

We demonstrate experimentally that the relativistic electron flow in a dense plasma can be efficiently confined and guided in targets exhibiting a high-resistivity-core-low-resistivity-cladding structure analogous to optical waveguides. The relativistic electron beam is shown to be confined to an...

Characterisation of deuterium spectra from laser driven multi-species sources by employing differentially filtered image plate detectors in Thomson spectrometers.

The Review of scientific instruments

Alejo A, Kar S, Ahmed H, Krygier AG, Doria D, Clarke R, Fernandez J, Freeman RR, Fuchs J, Green A, Green JS, Jung D, Kleinschmidt A, Lewis CL, Morrison JT, Najmudin Z, Nakamura H, Nersisyan G, Norreys P, Notley M, Oliver M, Roth M, Ruiz JA, Vassura L, Zepf M, Borghesi M.
PMID: 25273715
Rev Sci Instrum. 2014 Sep;85(9):093303. doi: 10.1063/1.4893780.

A novel method for characterising the full spectrum of deuteron ions emitted by laser driven multi-species ion sources is discussed. The procedure is based on using differential filtering over the detector of a Thompson parabola ion spectrometer, which enables...

Machine learning applied to proton radiography of high-energy-density plasmas.

Physical review. E

Chen NFY, Kasim MF, Ceurvorst L, Ratan N, Sadler J, Levy MC, Trines R, Bingham R, Norreys P.
PMID: 28505758
Phys Rev E. 2017 Apr;95(4):043305. doi: 10.1103/PhysRevE.95.043305. Epub 2017 Apr 17.

Proton radiography is a technique extensively used to resolve magnetic field structures in high-energy-density plasmas, revealing a whole variety of interesting phenomena such as magnetic reconnection and collisionless shocks found in astrophysical systems. Existing methods of analyzing proton radiographs...

Showing 1 to 12 of 90 entries