Zobrazeno 1 - 10
of 82
pro vyhledávání: '"C J Hooker"'
Autor:
P A Walker, N Bourgeois, W Rittershofer, J Cowley, N Kajumba, A R Maier, J Wenz, C M Werle, S Karsch, F Grüner, D R Symes, P P Rajeev, S J Hawkes, O Chekhlov, C J Hooker, B Parry, Y Tang, S M Hooker
Publikováno v:
New Journal of Physics, Vol 15, Iss 4, p 045024 (2013)
The generation of GeV-scale electron beams in a gas-filled capillary discharge waveguide with good reproducibility is discussed. Beams of electrons with energies above 900 MeV, and with root-mean-square divergences of 3.5 mrad, are observed for a pla
Externí odkaz:
https://doaj.org/article/867adab766234f15a8084281acab9cbb
Autor:
M. S. Bloom, M. J. V. Streeter, S. Kneip, R. A. Bendoyro, O. Cheklov, J. M. Cole, A. Döpp, C. J. Hooker, J. Holloway, J. Jiang, N. C. Lopes, H. Nakamura, P. A. Norreys, P. P. Rajeev, D. R. Symes, J. Schreiber, J. C. Wood, M. Wing, Z. Najmudin, S. P. D. Mangles
Publikováno v:
Physical Review Accelerators and Beams, Vol 23, Iss 6, p 061301 (2020)
We show that the properties of the electron beam and bright x rays produced by a laser wakefield accelerator can be predicted if the distance over which the laser self-focuses and compresses prior to self-injection is taken into account. A model base
Externí odkaz:
https://doaj.org/article/0af2be0687dd49cdb637910c98cf8668
Autor:
Richard O. Moore, Justin Wark, Colin E. Webb, Peter E. Dyer, Colin N. Danson, Nadeem H. Rizvi, Wayne Harris, Nicholas Hopps, G.J. Pert, Janet Hull, John W. G. Tisch, Zheng-Ming Sheng, Chris Edwards, David Hunt, Paul Ewart, David Hillier, Anthony W. Parker, Robert J. Collins, Simon M. Hooker, Ceri Brenner, John Littlechild, Ken S. Lipton, Abby Littlechild, Laurence Devereux, Neal Croxford, Adrian Knowles, Mark Kempenaars, David C. Hanna, Trevor Winstone, Geoff H. C. New, Dino A. Jaroszynski, A. E. Bucker Dangor, Sir Peter L. Knight, Gary Thomas, Michael J. Norman, Dave Willford, William Eugene Martin, Clive Morrison, Anthony Dymoke-Bradshaw, Malcolm White, S. Mark Wiggins, Zulfikar Najmudin, John M. Girkin, Ted Paine, Peter Maggs, Allister I. Ferguson, Chris Pietraszewski, John R. M. Barr, Roy Taylor, Christopher Spindloe, Ciaran Lewis, Paul McKenna, Helmut Kessler, Nigel Seddon, Steve Knight, Thomas Bett, Roland Smith, Andrew Randewich, David Bowley, David Slater, Rory R. Penman, Denis R. Hall, Stuart Mangles, C. J. Hooker, Peter Blyth, Graeme P. A. Malcolm, David Neely
Publikováno v:
High Power Laser Science and Engineering, 2021, Vol.9, pp.e18 [Peer Reviewed Journal]
The first demonstration of laser action in ruby was made in 1960 by T. H. Maiman of Hughes Research Laboratories, USA. Many laboratories worldwide began the search for lasers using different materials, operating at different wavelengths. In the UK, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c82046a5da323f0fda8e03df24e59f9
http://hdl.handle.net/10044/1/89337
http://hdl.handle.net/10044/1/89337
Autor:
C. J. Hooker, Robbie Scott, Dan Symes, J. Cowley, Tobias Kleinwächter, Wolf Rittershofer, C. Thornton, Simon M. Hooker, Nicolas Bourgeois, Jens Osterhoff
Publikováno v:
Physical Review Accelerators and Beams, Vol 23, Iss 11, p 111301 (2020)
Physical review accelerators and beams 23(11), 111301 (2020). doi:10.1103/PhysRevAccelBeams.23.111301
Physical review accelerators and beams 23(11), 111301 (2020). doi:10.1103/PhysRevAccelBeams.23.111301
A novel mechanism for injection, emittance selection, and postacceleration for laser wakefield electron acceleration is identified and described. It is shown that a laser prepulse can create an ionized plasma filament through multiphoton ionization a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7e8db5d453bf6434dc88def0b077e01
https://doaj.org/article/d898a065eeea4d049120768f3bf747d7
https://doaj.org/article/d898a065eeea4d049120768f3bf747d7
Autor:
S. V. Rahul, Jens Osterhoff, P. P. Rajeev, J.-N. Gruse, C. D. Murphy, Samuel Eardley, S. J. Hawkes, Stuart Mangles, D. Hazra, Nicolas Bourgeois, M. J. V. Streeter, Roland Smith, A. G. R. Thomas, P. Pourmoussavi, V. A. Marshall, J. D. E. Scott, O. Chekhlov, D. R. Symes, B. Parry, John Nees, Karl Krushelnick, Christopher D. Gregory, S. J. D. Dann, Emma Springate, J. Hah, S. Rozario, C. D. Baird, C. Thornton, Zulfikar Najmudin, Y. Tang, C. J. Hooker, Sheroy Tata
Publikováno v:
Physical review accelerators and beams 22(4), 041303 (2019). doi:10.1103/PhysRevAccelBeams.22.041303
Physical review accelerators and beams 22(4), 041303 (2019). doi:10.1103/PhysRevAccelBeams.22.041303
We describe the use of a genetic algorithm to apply active feedback to a laser wakefield accelerator at a higher power (10 TW) and a lower repet
We describe the use of a genetic algorithm to apply active feedback to a laser wakefield accelerator at a higher power (10 TW) and a lower repet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20b688fd06e6e02d77426cb8141f2f91
https://eprints.whiterose.ac.uk/148864/1/PhysRevAccelBeams.22.041303.pdf
https://eprints.whiterose.ac.uk/148864/1/PhysRevAccelBeams.22.041303.pdf
Autor:
Hazel Lowe, D. Bigourd, Dan Symes, S. J. Hawkes, C. J. Hooker, Robbie Scott, K. Mecseki, S. Patankar, Christopher Price, Stefan Olsson-Robbie, Nicola Booth, E. T. Gumbrell, Hugo Doyle, Roland Smith
Publikováno v:
Physics of Plasmas. 27:033301
Radiative-shocks induced by laser–cluster interactions are modeled using radiation-hydrodynamic simulations. A good agreement—in both shock velocity and density profiles—is obtained between experiment and simulations, indicating that non-local
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20398dd078992ce84aeb5fe2f723428a
https://doi.org/10.1063/1.5136070
https://doi.org/10.1063/1.5136070
Autor:
A. E. Dangor, Hirotaka Nakamura, J. Holloway, Zulfikar Najmudin, Stuart Mangles, Charlotte Palmer, Nelson Lopes, Stefan Kneip, P. P. Rajeev, M. J. V. Streeter, C. J. Hooker, Oleg Chekhlov, A. Döpp, J. Jiang, Peter Norreys, Joerg Schreiber, M. S. Bloom, Matthew Wing, R. A. Bendoyro, Dan Symes
Publikováno v:
254801-6
254801-1
Physical Review Letters
254801-1
Physical Review Letters
We report on the depletion and power amplification of the driving laser pulse in a strongly-driven laser wakefield accelerator. Simultaneous measurement of the transmitted pulse energy and temporal shape indicate an increase in peak power from $187 \
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a98909a79fa5bfd05e0774aa6e8b8db4
https://doi.org/10.1103/physrevlett.120.254801
https://doi.org/10.1103/physrevlett.120.254801
Autor:
Samuel Eardley, S. J. Hawkes, Stuart Mangles, J.-N. Gruse, V. A. Marshall, S. V. Rahul, Jens Osterhoff, Oleg Chekhlov, Nicolas Bourgeois, C. J. Hooker, Sheroy Tata, J. D. E. Scott, C. D. Murphy, C. Thornton, P. P. Rajeev, Emma Springate, Dan Symes, B. Parry, J. Hah, S. J. D. Dann, Roland Smith, Alexander Thomas, M. Krishnamurthy, P. Pourmoussavi, S. Rozario, D. Hazra, C. D. Baird, Christopher D. Gregory, Zulfikar Najmudin, Y. Tang, M. J. V. Streeter
Publikováno v:
244101-5
244101-1
Applied physics letters 112(24), 244101 (2018). doi:10.1063/1.5027297
244101-1
Applied physics letters 112(24), 244101 (2018). doi:10.1063/1.5027297
We describe how active feedback routines can be applied at limited repetition rate (5 Hz) to optimize high-power $>10$ TW) laser interactions with clustered gases. Optimization of x-ray production from an argon cluster jet, using a genetic algorithm,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4bb4a4cc8485a2f4b4a41018130bdf4
http://hdl.handle.net/10044/1/60054
http://hdl.handle.net/10044/1/60054
Autor:
M. Divoky, O. Chekhlov, C. J. Hooker, John Collier, Tomas Mocek, Jan Pilar, Klaus Ertel, Paul Mason, Christopher J Edwards, Antonio Lucianetti, Saumyabrata Banerjee, P. J. Phillips, Jessica Smith, Waseem Shaikh, C. Hernandez Gomez, M. De Vido, Thomas Butcher
Publikováno v:
Solid State Lasers XXVII: Technology and Devices.
We report on the successful demonstration of the world’s first kW average power, 100 Joule-class, high-energy, nanosecond pulsed diode-pumped solid-state laser (DPSSL), DiPOLE100. Results from the first long-term test for amplification will be pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2fba7fac680065bfd55c9aba79b0169
https://doi.org/10.1117/12.2289579
https://doi.org/10.1117/12.2289579
Autor:
T. P. A. Ibbotson, N. Bourgeois, T. P. Rowlands-Rees, L. S. Caballero, S. I. Bajlekov, P. A. Walker, S. Kneip, S. P. D. Mangles, S. R. Nagel, C. A. J. Palmer, N. Delerue, G. Doucas, D. Urner, O. Chekhlov, R. J. Clarke, E. Divall, K. Ertel, P. S. Foster, S. J. Hawkes, C. J. Hooker, B. Parry, P. P. Rajeev, M. J. V. Streeter, S. M. Hooker
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 13, Iss 3, p 031301 (2010)
The generation of quasimonoenergetic electron beams, with energies greater than 500 MeV, in a laser-plasma accelerator driven by 2.5 J, 80 fs laser pulses guided in a low density plasma channel, is investigated. The laser energy required to achieve e
Externí odkaz:
https://doaj.org/article/613f7abf3a3c4c08842ebf7be63cbc05