Imperial College London

ProfessorZulfikarNajmudin

Faculty of Natural SciencesDepartment of Physics

Professor of Physics
 
 
 
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Contact

 

z.najmudin Website

 
 
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Location

 

736Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
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268 results found

Prasad R, Ter-Avetisyan S, Doria D, Quinn KE, Romagnani L, Foster PS, Brenner CM, Green JS, Robinson APL, Gallegos P, Streeter MJV, Carroll DC, Tresca O, Dover N, Palmer CAJ, Schreiber J, Neely D, Najmudin Z, Mckenna P, Zepf M, Borghesi Met al., 2010, Ion acceleration from ultra thin foils on ASTRA-Gemini laser with 50fs, 10<sup>20</sup>-10<sup>21</sup> W/cm<sup>2</sup> pulses, Pages: 1006-1009

Conference paper

Sarri G, Singh DK, Davies JR, Lancaster KL, Clark EL, Hassan S, Jiang J, Kageiwa N, Lopes N, Rehman A, Russo C, Scott RHH, Tanimoto T, Najmudin Z, Tanaka KA, Tatarakis M, Borghesi M, Norreys Pet al., 2010, Experimental detection of post-soliton structures following high intensity laser interaction with a sub-critical gas jet, Pages: 1960-1963

Conference paper

Zepf M, Borghesi M, Mckenna P, Neely D, Najmudin Z, Lrobinson AP, Prasad R, Ter-Avetysian S, Foster PF, Carroll DC, Doria D, Dover N, Gallegos P, Green JS, Palmer CAJ, Romagnani L, Qiao B, Quinn K, Streeter M, Schreiber J, Brenner C, Tresca Oet al., 2010, Radiation pressure acceleration in the light-sail regime, Pages: 129-132

Conference paper

Pogorelsky IV, Babzien M, Polyanskiy MN, Yakimenko V, Dover NP, Palmer CAJ, Najmudin Z, Schreiber J, Ispiryan M, Shkolnikov P, Dudnikova Get al., 2010, Laser energy conversion to solitons and monoenergetic protons in near-critical hydrogen plasma, Pages: 4446-4448

Recent theoretical and experimental studies point to better efficiency of laser-driven ion acceleration when approaching the critical plasma density regime. Simultaneously, this is the condition for observing solitons: "bubble"-like quasi-stationary plasma formations with laser radiation trapped inside. Exploring this regime with ultra-intense solid state lasers is problematic due to the lack of plasma sources and imaging methods at ∼1021 cm-3 electron density. The terawatt picosecond CO2 laser operated at Brookhaven's Accelerator Test Facility offers a solution to this problem. At the 10 μm laser wavelength, the critical plasma density is 1019 cm-3, which is attainable with gas jets and can be optically probed with visible light. Capitalizing on this approach, we focused a circular-polarized CO2 laser beam with α0=0.5 onto a hydrogen gas jet and observed monoenergetic proton beams in the 1 MeV range. Simultaneously, the laser/plasma interaction region has been optically probed with a 2nd harmonic picosecond Nd:YAG laser to reveal hole boring and stationary soliton-like plasma formations. 2D PIC simulations agree with experimental results and aid in their interpretation.

Conference paper

Prasad R, Doria D, Ter-Avetisyan S, Fostera PS, Quinn KE, Romagnani L, Brenner CM, Green JS, Gallegos P, Streeter MJV, Carroll DC, Tresca O, Dover N, Palmer CAJ, Schreiber J, Neely D, Najmudin Z, McKenna P, Zepf M, Borghesi Met al., 2010, Calibration of Thomson parabola-MCP assembly for multi-MeV ion spectroscopy, 1st International Conference on Frontiers in Diagnostic Technologies, Publisher: ELSEVIER SCIENCE BV, Pages: 712-715, ISSN: 0168-9002

Conference paper

Sarri G, Lancaster KL, Trines R, Clark EL, Hassan S, Jiang J, Kageiwa N, Lopes N, Ramis R, Rehman A, Ribeyre X, Russo C, Scott RHH, Tanimoto T, Temporal M, Borghesi M, Davies JR, Najmudin Z, Tanaka KA, Tatarakis M, Norreys PAet al., 2010, Creation of persistent, straight, 2 mm long laser driven channels in underdense plasmas, PHYSICS OF PLASMAS, Vol: 17, ISSN: 1070-664X

Journal article

Sarri G, Singh DK, Davies JR, Fiuza F, Lancaster KL, Clark EL, Hassan S, Jiang J, Kageiwa N, Lopes N, Rehman A, Russo C, Scott RHH, Tanimoto T, Najmudin Z, Tanaka KA, Tatarakis M, Borghesi M, Norreys PAet al., 2010, Observation of Postsoliton Expansion Following Laser Propagation through an Underdense Plasma, PHYSICAL REVIEW LETTERS, Vol: 105, ISSN: 0031-9007

Journal article

Kaluza MC, Schlenvoigt H-P, Mangles SPD, Thomas AGR, Dangor AE, Schwoerer H, Mori WB, Najmudin Z, Krushelnick KMet al., 2010, Measurement of Magnetic-Field Structures in a Laser-Wakefield Accelerator, PHYSICAL REVIEW LETTERS, Vol: 105, ISSN: 0031-9007

Journal article

Kaluza MC, Mangles SPD, Thomas AGR, Najmudin Z, Dangor AE, Murphy CD, Collier JL, Divall EJ, Foster PS, Hooker CJ, Langley AJ, Smith J, Krushelnick Ket al., 2010, Observation of a Long-Wavelength Hosing Modulation of a High-Intensity Laser Pulse in Underdense Plasma, PHYSICAL REVIEW LETTERS, Vol: 105, ISSN: 0031-9007

Journal article

Willingale L, Thomas AGR, Nilson PM, Kaluza MC, Bandyopadhyay S, Dangor AE, Evans RG, Fernandes P, Haines MG, Kamperidis C, Kingham RJ, Minardi S, Notley M, Ridgers CP, Rozmus W, Sherlock M, Tatarakis M, Wei MS, Najmudin Z, Krushelnick Ket al., 2010, Fast Advection of Magnetic Fields by Hot Electrons, PHYSICAL REVIEW LETTERS, Vol: 105, ISSN: 0031-9007

Journal article

Pogorelsky IV, Yakimenko V, Polyanskiy M, Shkolnikov P, Ispiryan M, Neely D, McKenna P, Carroll D, Najmudin Z, Willingale Let al., 2010, Ultrafast CO2 laser technology: Application in ion acceleration, COULOMB Workshop on Ions Acceleration with High Power Lasers, Publisher: ELSEVIER SCIENCE BV, Pages: 67-70, ISSN: 0168-9002

Conference paper

Bellei C, Nagel SR, Kar S, Henig A, Kneip S, Palmer C, Saevert A, Willingale L, Carroll D, Dromey B, Green JS, Markey K, Simpson P, Clarke RJ, Lowe H, Neely D, Spindloe C, Tolley M, Kaluza MC, Mangles SPD, McKenna P, Norreys PA, Schreiber J, Zepf M, Davies JR, Krushelnick K, Najmudin Zet al., 2010, Micron-scale fast electron filaments and recirculation determined from rear-side optical emission in high-intensity laser-solid interactions, NEW JOURNAL OF PHYSICS, Vol: 12, ISSN: 1367-2630

Journal article

Nilson PM, Mangles SPD, Willingale L, Kaluza MC, Thomas AGR, Tatarakis M, Clarke RJ, Lancaster KL, Karsch S, Schreiber J, Najmudin Z, Dangor AE, Krushelnick Ket al., 2010, Plasma cavitation in ultraintense laser interactions with underdense helium plasmas, NEW JOURNAL OF PHYSICS, Vol: 12, ISSN: 1367-2630

Journal article

Carroll DC, Tresca O, Prasad R, Romagnani L, Foster PS, Gallegos P, Ter-Avetisyan S, Green JS, Streeter MJV, Dover N, Palmer CAJ, Brenner CM, Cameron FH, Quinn KE, Schreiber J, Robinson APL, Baeva T, Quinn MN, Yuan XH, Najmudin Z, Zepf M, Neely D, Borghesi M, McKenna Pet al., 2010, Carbon ion acceleration from thin foil targets irradiated by ultrahigh-contrast, ultraintense laser pulses, NEW JOURNAL OF PHYSICS, Vol: 12, ISSN: 1367-2630

Journal article

Trines RMGM, Bingham R, Najmudin Z, Mangles S, Silva LO, Fonseca R, Norreys PAet al., 2010, Electron trapping and acceleration on a downward density ramp: a two-stage approach, NEW JOURNAL OF PHYSICS, Vol: 12, ISSN: 1367-2630

Journal article

Willingale L, Nilson PM, Kaluza MC, Dangor AE, Evans RG, Fernandes P, Haines MG, Kamperidis C, Kingham RJ, Ridgers CP, Sherlock M, Thomas AGR, Wei MS, Najmudin Z, Krushelnick K, Bandyopadhyay S, Notley M, Minardi S, Tatarakis M, Rozmus Wet al., 2010, Proton deflectometry of a magnetic reconnection geometry, PHYSICS OF PLASMAS, Vol: 17, ISSN: 1070-664X

Journal article

Matsuoka T, Kneip S, McGuffey C, Palmer C, Schreiber J, Huntington C, Horovitz Y, Dollar F, Chvykov V, Kalintchenko G, Thomas AGR, Yanovsky V, Phuoc KT, Mangles SPD, Najmudin Z, Maksimchuk A, Krushelnick Ket al., 2010, Synchrotron x-ray radiation from laser wakefield accelerated electron beams in a plasma channel, SIXTH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS, PARTS 1-4, Vol: 244, ISSN: 1742-6588

Journal article

Palmer CAJ, Dover N, Pogorelsky I, Babzien M, Dudnikova G, Ispiriyan M, Polyanskiy M, Schreiber J, Shkolnikov P, Yakimenko V, Najmudin Zet al., 2010, First Experiments on Laser Acceleration of Protons in Overdense Gas Jets, 14th Workshop on Advanced Accelerator Concepts, Publisher: AMER INST PHYSICS, Pages: 699-+, ISSN: 0094-243X

Conference paper

Kneip S, McGuffey C, Chvykov V, Dollar F, Kalintchenko G, Maksimchuk T, Mangles SPD, Matsuoka T, Nagel SR, Palmer CAJ, Schreiber J, Phuoc KT, Thomas AGR, Krushelnick K, Najmudin Zet al., 2010, Synchrotron Radiation from a Laser Plasma Accelerator in the Bubble Regime, 14th Workshop on Advanced Accelerator Concepts, Publisher: AMER INST PHYSICS, Pages: 185-+, ISSN: 0094-243X

Conference paper

Nilson PM, Mangles SPD, Willingale L, Kaluza MC, Thomas AGR, Tatarakis M, Najmudin Z, Clarke RJ, Lancaster KL, Karsch S, Schreiber J, Evans RG, Dangor AE, Krushelnick Ket al., 2009, Generation of Ultrahigh-Velocity Ionizing Shocks with Petawatt-Class Laser Pulses, PHYSICAL REVIEW LETTERS, Vol: 103, ISSN: 0031-9007

Journal article

Mangles SPD, Kneip S, McGuffey C, Bulanov SS, Chvykov V, Dollar F, Horovitz Y, Huntington C, Kalintchenko G, Maksimchuk A, Matsuoka T, Palmer C, Ta Phuoc K, Rousseau P, Yanovsky V, Krushelnick K, Najmudin Zet al., 2009, Coherent betatron radiation from laser-wakefield accelerated bunches of monoenergetic electrons

X-rays generated by 0.1 - 0.5 GeV electron beams generated using a 100 TW laser are shown to have a low emittance, be spatially coherent and have a peak brightness comparable to 3rd generation synchrotron sources. © 2009 OSA.

Conference paper

Bellei C, Nagel SR, Kneip S, Palmer C, Mangles SPD, Schreiber J, Najmudin Z, Henig A, Davies JR, Clarke RJ, Neely D, Willingale L, Krushelnick Ket al., 2009, Sub-micron fast electron filamentation in high intensity laser-solid interactions, ISSN: 0730-9244

Conference paper

Mangles SPD, Genoud G, Kneip S, Burza M, Cassou K, Cros B, Dover NP, Kamperidis C, Najmudin Z, Persson A, Schreiber J, Wojda F, Wahlstrom C-Get al., 2009, Controlling the spectrum of x-rays generated in a laser-plasma accelerator by tailoring the laser wavefront, Applied Physics Letters, Vol: 95

Journal article

Dromey B, Adams D, Kar S, Bellei C, Carroll DC, Clarke RJ, Green JS, Kneip S, Markey K, Nagel SR, Simpson PT, Willingale L, McKenna P, Neely D, Najmudin Z, Krushelnick K, Norreys PA, Zepf Met al., 2009, High brightness keV harmonics from relativistically oscillating plasma surfaces, EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, Vol: 175, Pages: 57-60, ISSN: 1951-6355

Journal article

Kneip S, Nagel SR, Martins SF, Mangles SPD, Bellei C, Chekhlov O, Clarke RJ, Delerue N, Divall EJ, Doucas G, Ertel K, Fiuza F, Fonseca R, Foster P, Hawkes SJ, Hooker CJ, Krushelnick K, Mori WB, Palmer CAJ, Phuoc KT, Rajeev PP, Schreiber J, Streeter MJV, Urner D, Vieira J, Silva LO, Najmudin Zet al., 2009, Near-GeV Acceleration of Electrons by a Nonlinear Plasma Wave Driven by a Self-Guided Laser Pulse (vol 103, art no 035002, 2009), PHYSICAL REVIEW LETTERS, Vol: 103, ISSN: 0031-9007

Journal article

Kneip S, Nagel SR, Martins SF, Mangles SPD, Bellei C, Chekhlov O, Clarke RJ, Delerue N, Divall EJ, Doucas G, Ertel K, Fiuza F, Fonseca R, Foster P, Hawkes SJ, Hooker CJ, Krushelnick K, Mori WB, Palmer CAJ, Phuoc KT, Rajeev PP, Schreiber J, Streeter MJV, Urner D, Vieira J, Silva LO, Najmudin Zet al., 2009, Near-GeV Acceleration of Electrons by a Nonlinear Plasma Wave Driven by a Self-Guided Laser Pulse, PHYSICAL REVIEW LETTERS, Vol: 103, ISSN: 0031-9007

Journal article

Dromey B, Bellei C, Carroll DC, Clarke RJ, Green JS, Kar S, Kneip S, Markey K, Nagel SR, Willingale L, McKenna P, Neely D, Najmudin Z, Krushelnick K, Norreys PA, Zepf Met al., 2009, Third harmonic order imaging as a focal spot diagnostic for high intensity laser-solid interactions, LASER AND PARTICLE BEAMS, Vol: 27, Pages: 243-248, ISSN: 0263-0346

Journal article

Willingale L, Nagel SR, Thomas AGR, Bellei C, Clarke RJ, Dangor AE, Heathcote R, Kaluza MC, Kamperidis C, Kneip S, Krushelnick K, Lopes N, Mangles SPD, Nazarov W, Nilson PM, Najmudin Zet al., 2009, Characterization of High-Intensity Laser Propagation in the Relativistic Transparent Regime through Measurements of Energetic Proton Beams, PHYSICAL REVIEW LETTERS, Vol: 102, ISSN: 0031-9007

Journal article

Thomas AGR, Mangles SPD, Murphy CD, Dangor AE, Foster PS, Gallacher JG, Jaroszynski DA, Kamperidis C, Krushelnick K, Lancaster KL, Norreys PA, Viskup R, Najmudin Zet al., 2009, Ultrashort pulse filamentation and monoenergetic electron beam production in LWFAs, PLASMA PHYSICS AND CONTROLLED FUSION, Vol: 51, ISSN: 0741-3335

Journal article

Trines RMGM, Murphy CD, Lancaster KL, Chekhlov O, Norreys PA, Bingham R, Mendonca JT, Silva LO, Mangles SPD, Kamperidis C, Thomas A, Krushelnick K, Najmudin Zet al., 2009, Photon acceleration and modulational instability during wakefield excitation using long laser pulses, PLASMA PHYSICS AND CONTROLLED FUSION, Vol: 51, ISSN: 0741-3335

Journal article

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