Zobrazeno 1 - 10
of 133
pro vyhledávání: '"J S Green"'
Autor:
S Ferguson, P Martin, H Ahmed, E Aktan, M Alanazi, M Cerchez, D Doria, J S Green, B Greenwood, B Odlozilik, O Willi, M Borghesi, S Kar
Publikováno v:
New Journal of Physics, Vol 25, Iss 1, p 013006 (2023)
Helical coil accelerators are a recent development in laser-driven ion production, acting on the intrinsically wide divergence and broadband energy spectrum of laser-accelerated protons to deliver ultra-low divergence and quasi-monoenergetic beams. T
Externí odkaz:
https://doaj.org/article/4b2e912d1b4b4fcda5133c301f0a1bb1
Autor:
G G Scott, C M Brenner, V Bagnoud, R J Clarke, B Gonzalez-Izquierdo, J S Green, R I Heathcote, H W Powell, D R Rusby, B Zielbauer, P McKenna, D Neely
Publikováno v:
New Journal of Physics, Vol 19, Iss 4, p 043010 (2017)
It is shown for the first time that the spatial and temporal distribution of laser accelerated protons can be used as a diagnostic of Weibel instability presence and evolution in the rear surface scale lengths of a solid density target. Numerical mod
Externí odkaz:
https://doaj.org/article/0710ec2c88c3473e85e4d202be824000
Autor:
G G Scott, V Bagnoud, C Brabetz, R J Clarke, J S Green, R I Heathcote, H W Powell, B Zielbauer, T D Arber, P McKenna, D Neely
Publikováno v:
New Journal of Physics, Vol 17, Iss 3, p 033027 (2015)
We measure a record 96 ±2.5% specularly reflected energy fraction from an interaction with a plasma mirror (PM) surface preionized by a controlled prepulse and find that the optical quality is dependent on the inter pulse time delay. Simulations sho
Externí odkaz:
https://doaj.org/article/8513f5b705244bf5bbd53058cc926507
Autor:
A. Higginson, R. J. Gray, M. King, R. J. Dance, S. D. R. Williamson, N. M. H. Butler, R. Wilson, R. Capdessus, C. Armstrong, J. S. Green, S. J. Hawkes, P. Martin, W. Q. Wei, S. R. Mirfayzi, X. H. Yuan, S. Kar, M. Borghesi, R. J. Clarke, D. Neely, P. McKenna
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-9 (2018)
It is a challenge to scale up laser-ion acceleration to higher ion energies. Here the authors demonstrate a hybrid acceleration scheme based on the relativistic induced transparency mechanism using linearly polarised laser interaction with foil targe
Externí odkaz:
https://doaj.org/article/c8346ad48c544cd1af72ae149959a8b6
Autor:
Gourab Chatterjee, Prashant Kumar Singh, A. P. L. Robinson, D. Blackman, N. Booth, O. Culfa, R. J. Dance, L. A. Gizzi, R. J. Gray, J. S. Green, P. Koester, G. Ravindra Kumar, L. Labate, Amit D. Lad, K. L. Lancaster, J. Pasley, N. C. Woolsey, P. P. Rajeev
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Abstract The transport of hot, relativistic electrons produced by the interaction of an intense petawatt laser pulse with a solid has garnered interest due to its potential application in the development of innovative x-ray sources and ion-accelerati
Externí odkaz:
https://doaj.org/article/0477f9b8c28a4ae094907f90ee3e0198
Autor:
B. Loughran, M. J. V. Streeter, H. Ahmed, S. Astbury, M. Balcazar, M. Borghesi, N. Bourgeois, C. B. Curry, S. J. D. Dann, S. DiIorio, N. P. Dover, T. Dzelzainis, O. C. Ettlinger, M. Gauthier, L. Giuffrida, G. D. Glenn, S. H. Glenzer, J. S. Green, R. J. Gray, G. S. Hicks, C. Hyland, V. Istokskaia, M. King, D. Margarone, O. McCusker, P. McKenna, Z. Najmudin, C. Parisuaña, P. Parsons, C. Spindloe, D. R. Symes, A. G. R. Thomas, F. Treffert, N. Xu, C. A. J. Palmer
Publikováno v:
Loughran, B, Streeter, M J V, Ahmed, H, Astbury, S, Balcazar, M, Borghesi, M, Bourgeois, N, Curry, C B, Dann, S J D, Diiorio, S, Dover, N P, Dzelzainis, T, Ettlinger, O C, Gauthier, M, Giuffrida, L, Glenn, G D, Glenzer, S H, Green, J S, Gray, R J, Hicks, G S, Hyland, C, Istokskaia, V, King, M, Margarone, D, McCusker, O, McKenna, P, Najmudin, Z, Parisuaña, C, Parsons, P, Spindloe, C, Symes, D R, Thomas, A G R, Treffert, F, Xu, N & Palmer, C A J 2023, ' Automated control and optimization of laser-driven ion acceleration ', High Power Laser Science and Engineering, vol. 11, e35 . https://doi.org/10.1017/hpl.2023.23
The interaction of relativistically intense lasers with opaque targets represents a highly non-linear, multi-dimensional parameter space. This limits the utility of sequential 1D scanning of experimental parameters for the optimization of secondary r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b89847cd041dd2bde74babf23a5036d
https://pure.qub.ac.uk/en/publications/b3e94f30-81d8-45ec-836d-07b226d27020
https://pure.qub.ac.uk/en/publications/b3e94f30-81d8-45ec-836d-07b226d27020
Autor:
N. Xu, M. J. V. Streeter, O. C. Ettlinger, H. Ahmed, S. Astbury, M. Borghesi, N. Bourgeois, C. B. Curry, S. J. D. Dann, N. P. Dover, T. Dzelzainis, V. Istokskaia, M. Gauthier, L. Giuffrida, G. D. Glenn, S. H. Glenzer, R. J. Gray, J. S. Green, G. S. Hicks, C. Hyland, M. King, B. Loughran, D. Margarone, O. McCusker, P. McKenna, C. Parisuaña, P. Parsons, C. Spindloe, D. R. Symes, F. Treffert, C. A. J. Palmer, Z. Najmudin
Publikováno v:
Xu, N, Streeter, M J V, Ettlinger, O C, Ahmed, H, Astbury, S, Borghesi, M, Bourgeois, N, Curry, C B, Dann, S J D, Dover, N P, Dzelzainis, T, Istokskaia, V, Gauthier, M, Giuffrida, L, Glenn, G D, Glenzer, S H, Gray, R J, Green, J S, Hicks, G S, Hyland, C, King, M, Loughran, B, Margarone, D, McCusker, O, McKenna, P, Parisuaña, C, Parsons, P, Spindloe, C, Symes, D R, Treffert, F, Palmer, C A J & Najmudin, Z 2023, ' Versatile tape-drive target for high-repetition-rate laser-driven proton acceleration ', High Power Laser Science and Engineering, vol. 11, e23 . https://doi.org/10.1017/hpl.2023.27
We present the development and characterization of a high-stability, multi-material, multi-thickness tape-drive target for laser-driven acceleration at repetition rates of up to 100 Hz. The tape surface position was measured to be stable on the sub-m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58e4184a53f82d292418ccb888d1b3c3
https://pure.qub.ac.uk/en/publications/4964d97b-a6b5-45be-91b9-1dd1b89dcdb8
https://pure.qub.ac.uk/en/publications/4964d97b-a6b5-45be-91b9-1dd1b89dcdb8
Autor:
P. Martin, H. Ahmed, D. Doria, A. Alejo, R. Clarke, S. Ferguson, J. Fernández-Tobias, R. R. Freeman, J. Fuchs, A. Green, J. S. Green, D. Gwynne, F. Hanton, J. Jarrett, D. Jung, K. F. Kakolee, A. G. Krygier, C. L. S. Lewis, A. McIlvenny, P. McKenna, J. T. Morrison, Z. Najmudin, K. Naughton, G. Nersisyan, P. Norreys, M. Notley, M. Roth, J. A. Ruiz, C. Scullion, M. Zepf, S. Zhai, M. Borghesi, S. Kar
Publikováno v:
Review of Scientific Instruments
Review of Scientific Instruments, 2022, 93 (5), pp.053303. ⟨10.1063/5.0089402⟩
Martin, P, Ahmed, H, Doria, D, Alejo, A, Clarke, R, Ferguson, S, Fernández-Tobias, J, Freeman, R R, Fuchs, J, Green, A, Green, J S, Gwynne, D, Hanton, F, Jarrett, J, Jung, D, Kakolee, K F, Krygier, A G, Lewis, C L S, McIlvenny, A, McKenna, P, Morrison, J T, Najmudin, Z, Naughton, K, Nersisyan, G, Norreys, P, Notley, M, Roth, M, Ruiz, J A, Scullion, C, Zepf, M, Zhai, S, Borghesi, M & Kar, S 2022, ' Absolute calibration of Fujifilm BAS-TR image plate response to laser driven protons up to 40 MeV ', Review of Scientific Instruments, vol. 93, no. 5, 053303 . https://doi.org/10.1063/5.0089402
Review of Scientific Instruments, 2022, 93 (5), pp.053303. ⟨10.1063/5.0089402⟩
Martin, P, Ahmed, H, Doria, D, Alejo, A, Clarke, R, Ferguson, S, Fernández-Tobias, J, Freeman, R R, Fuchs, J, Green, A, Green, J S, Gwynne, D, Hanton, F, Jarrett, J, Jung, D, Kakolee, K F, Krygier, A G, Lewis, C L S, McIlvenny, A, McKenna, P, Morrison, J T, Najmudin, Z, Naughton, K, Nersisyan, G, Norreys, P, Notley, M, Roth, M, Ruiz, J A, Scullion, C, Zepf, M, Zhai, S, Borghesi, M & Kar, S 2022, ' Absolute calibration of Fujifilm BAS-TR image plate response to laser driven protons up to 40 MeV ', Review of Scientific Instruments, vol. 93, no. 5, 053303 . https://doi.org/10.1063/5.0089402
International audience; Image plates (IPs) are a popular detector in the field of laser driven ion acceleration, owing to their high dynamic range and reusability. An absolute calibration of these detectors to laser-driven protons in the routinely pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ee633ebaf3be71bcffc02d47c2fbeea
https://doi.org/10.1063/5.0089402
https://doi.org/10.1063/5.0089402
Autor:
A. Alejo, H. Ahmed, A. G. Krygier, R. Clarke, R. R. Freeman, J. Fuchs, A. Green, J. S. Green, D. Jung, A. Kleinschmidt, J. T. Morrison, Z. Najmudin, H. Nakamura, P. Norreys, M. Notley, M. Oliver, M. Roth, L. Vassura, M. Zepf, M. Borghesi, S. Kar
Publikováno v:
Alejo, A, Ahmed, H, Krygier, A G, Clarke, R J, Freeman, R R, Fuchs, J, Green, A, Green, J S, Jung, D, Kleinschmidt, A, Morrison, J T, Najmudin, Z, Nakamura, H, Norreys, P, Notley, M, Oliver, M, Roth, M, Vassura, L, Zepf, M, Borghesi, M & Kar, S 2022, ' Stabilized radiation pressure acceleration and neutron generation in ultrathin deuterated foils ', Physical Review Letters, vol. 129, no. 11, 114801 . https://doi.org/10.1103/PhysRevLett.129.114801
Premature relativistic transparency of ultrathin, laser-irradiated targets is recognized as an obstacle to achieving a stable radiation pressure acceleration in the "light sail" (LS) mode. Experimental data, corroborated by 2D PIC simulations, show t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c90891bd6d81bd8350f5338ee3b61339
https://pure.qub.ac.uk/en/publications/616cb313-3a7f-425d-94fb-9d09908c7f92
https://pure.qub.ac.uk/en/publications/616cb313-3a7f-425d-94fb-9d09908c7f92
Autor:
K Makur, B Ramakrishna, S Krishnamurthy, K F Kakolee, S Kar, M Cerchez, R Prasad, K Markey, M N Quinn, X H Yuan, J S Green, R H H Scott, P McKenna, J Osterholz, O Willi, P A Norreys, M Borghesi, M Zepf
Publikováno v:
Plasma Physics and Controlled Fusion. 65:045005
Bulk electron temperatures are calculated for thin Cu targets irradiated by the petawatt class Vulcan laser, from the Kα yield obtained using highly oriented pyrolytic graphite crystals. Cu-Kα emission studies have been used to probe the bulk elect