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Kevin Ronald

Dr

 https://orcid.org/0000-0002-8585-0746

  • United Kingdom

19982023
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Research Output 1998 2020

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Article
2019
1 Citation (Scopus)
27 Downloads (Pure)

Compact high power millimetre wave sources driven by pseudospark-sourced electron beams

He, W., Xie, J., Phelps, A., Cross, A., Yin, H., Shu, G., Yin, Y., Ronald, K., Zhao, J., Chen, X., Alfadhl, Y. & Zhang, L., 11 Sep 2019, In : IET Microwaves, Antennas & Propagation. 13, 11, p. 1794-1798 5 p.

Research output: Contribution to journal › Article

Open Access
File
pencil beams
Millimeter waves
millimeter waves
Electron beams
electron beams
12 Downloads (Pure)

Coupling structure for a high Q corrugated cavity as a microwave undulator

Zhang, L., He, W., Donaldson, C. R., Clarke, J., Ronald, K., Phelps, A. D. R. & Cross, A. W., 31 Oct 2019, In : IEEE Transactions on Electron Devices. 66, 10, p. 4392-4397 6 p.

Research output: Contribution to journal › Article

Open Access
File
Wigglers
Waveguides
Microwaves
Permanent magnets
Geometry

Design of planar millimeter-wave metallic structures for Wakefield acceleration

Zhang, L., He, W., Jamieson, S., Whyte, C. G., Ronald, K., Phelps, A. D. R. & Cross, A. W., 31 Jan 2019, In : Journal of Infrared, Millimeter and Terahertz Waves. 40, 1, p. 48-62 15 p.

Research output: Contribution to journal › Article

Open Access
File
Millimeter waves
millimeter waves
gradients
Linear accelerators
test facilities
2 Citations (Scopus)
12 Downloads (Pure)

First particle-by-particle measurement of emittance in the Muon Ionization Cooling Experiment

Adams, D., Ronald, K., Whyte, C., Young, A., Chatzitheodoridis, G. & The MICE collaboration, 30 Mar 2019, In : European Physical Journal C. 79, 3, 15 p., 257.

Research output: Contribution to journal › Article

Open Access
File
emittance
Ionization
muons
Cooling
cooling
7 Downloads (Pure)

Large-scale numerical simulation of ionospheric Langmuir turbulence excited by a radio frequency electromagnetic wave

Heelis, T. J., Ronald, K. & Eliasson, B., 7 Feb 2019, In : Plasma Physics and Controlled Fusion. 61, 3, 18 p., 035013.

Research output: Contribution to journal › Article

Open Access
File
Langmuir turbulence
Electromagnetic waves
ionospherics
radio frequencies
electromagnetic radiation
5 Downloads (Pure)

Maser radiation from collisionless shocks: application to astrophysical jets

Speirs, D. C., Ronald, K., Phelps, A. D. R., Koepke, M. E., Cairns, R. A., Rigby, A., Cruz, F., Trines, R., Bamford, R., Kellett, B. J., Albertazzi, B., Cross, J. E., Fraschetti, F., Graham, P., Kozlowski, P. M., Kuramitsu, Y., Miniati, F., Morita, T., Oliver, M., Reville, B. & 10 others, Sakawa, Y., Sarkar, S., Spindloe, C., Koenig, M., Silva, L. O., Lamb, D. Q., Tzeferacos, P., Lebedev, S., Gregori, G. & Bingham, R., 14 Mar 2019, In : High Power Laser Science and Engineering. 7, 8 p., e17.

Research output: Contribution to journal › Article

Open Access
File
Masers
masers
astrophysics
shock
Radiation
12 Downloads (Pure)

Mode coupling in periodic surface lattice and metamaterial structures for mm-wave and THz applications

MacLachlan, A. J., Robertson, C. W., Ronald, K., Cross, A. W. & Phelps, A. D. R., 30 Jun 2019, In : SN Applied Sciences. 1, 6, 8 p., 613.

Research output: Contribution to journal › Article

Open Access
File
coupled modes
copper
tunable filters
backups
periodic variations
1 Citation (Scopus)
14 Downloads (Pure)

Resonant excitation of volume and surface fields on complex electrodynamic surfaces

MacLachlan, A. J., Robertson, C. W., Konoplev, I. V., Cross, A. W., Phelps, A. D. R. & Ronald, K., 14 Mar 2019, In : Physical Review Applied. 11, 3, 8 p., 034034.

Research output: Contribution to journal › Article

Open Access
File
Electrodynamics
electrodynamics
Excitation
excitation
Substrate
4 Downloads (Pure)

Study of a 0.35 THz extended interaction oscillator driven by a pseudospark-sourced sheet electron beam

Xie, J., Zhang, L., Yin, H., He, W., Ronald, K., Phelps, A. D. R., Chen, X., Zhang, J., Alfadhl, Y., Yuan, X., Meng, L. & Cross, A. W., 31 Dec 2019, In : IEEE Transactions on Electron Devices. 67, 2, p. 652-658 7 p.

Research output: Contribution to journal › Article

Open Access
File
Beam plasma interactions
Electron beams
Microfabrication
Surface roughness
Networks (circuits)
1 Citation (Scopus)
10 Downloads (Pure)

Systematic study of a corrugated waveguide as a microwave undulator

Zhang, L., He, W., Clarke, J., Ronald, K., Phelps, A. D. R. & Cross, A., 31 Jan 2019, In : Journal of Synchrotron Radiation. 26, 1, p. 11-17 7 p.

Research output: Contribution to journal › Article

Open Access
File
corrugated waveguides
Wigglers
free electron lasers
Waveguides
Free electron lasers
1 Downloads (Pure)

Theoretical study of a W-band-covering frequency tunable gyrotron

Li, F., Du, C., Gao, Z., Pan, S., Zhang, L., Liu, P., Ronald, K. & Cross, A. W., 30 Dec 2019, In : IEEE Transactions on Electron Devices. 67, 2, p. 659-666 8 p.

Research output: Contribution to journal › Article

Open Access
File
Tuning
Magnetic resonance spectroscopy
Plasma heating
Terahertz waves
Networks (circuits)
2018
1 Citation (Scopus)
11 Downloads (Pure)

Design of a Ka-band MW-level high efficiency gyroklystron for accelerators

Wang, L., Dong, K., He, W., Wang, J., Luo, Y., Cross, A. W., Ronald, K. & Phelps, A. D. R., 12 Sep 2018, In : IET Microwaves, Antennas and Propagation. 12, 11, p. 1752-1757 6 p.

Research output: Contribution to journal › Article

Open Access
File
Particle accelerators
MATLAB
Networks (circuits)
1 Citation (Scopus)
31 Downloads (Pure)

Microwave undulator using a helically corrugated waveguide

Zhang, L., He, W., Clarke, J., Ronald, K., Phelps, A. D. R. & Cross, A. W., 31 Dec 2018, In : IEEE Transactions on Electron Devices. 65, 12, p. 5499-5504 6 p.

Research output: Contribution to journal › Article

Open Access
File
Wigglers
Waveguides
Microwaves
Free electron lasers
Electromagnetic fields
2017
4 Citations (Scopus)
53 Downloads (Pure)

Computer simulation of the sheath and the adjacent plasma in the presence of a plasma source

Shustin, E. G., Tarakanov, V. P. & Ronald, K., 1 Jan 2017, In : Vacuum. 135, p. 1-6 6 p.

Research output: Contribution to journal › Article

Open Access
File
Plasma sheaths
Plasma sources
sheaths
computerized simulation
Plasmas
3 Citations (Scopus)
10 Downloads (Pure)

Investigation of frequency-selective surfaces for a THz gyromultiplier output system

Li, X., Liu, X., Ronald, K., He, W., Zeng, Y., Alfadhl, Y., Donnan, R., Cross, A. & Chen, X., 30 Nov 2017, In : IEEE Transactions on Electron Devices. 64, 11, p. 4678-4685 8 p.

Research output: Contribution to journal › Article

Open Access
File
Frequency selective surfaces
Vacuum
Polarization
Fabrication
1 Citation (Scopus)
27 Downloads (Pure)

Laboratory experiments simulating electron cyclotron masers in space

Ronald, K., Speirs, D. C., King, M., Heelis, T., McConville, S. L., Gillespie, K. M., Bingham, R., Robertson, C. W., Cross, A. W. & Phelps, A. D. R., 4 Aug 2017, In : EPJ Web of Conferences. 149, 2 p., 03015.

Research output: Contribution to journal › Article

Open Access
File
masers
cyclotrons
electrons
2 Citations (Scopus)
15 Downloads (Pure)

Lattice design and expected performance of the muon ionization cooling experiment demonstration of ionization cooling

The MICE collaboration, 19 Jun 2017, In : Physical Review Accelerators and Beams. 20, 6, 11 p., 063501.

Research output: Contribution to journal › Article

Open Access
File
muons
cooling
ionization
emittance
neutrino beams
2016
8 Citations (Scopus)
7 Downloads (Pure)

A dual-frequency quasi-optical output system for a THz gyro-multiplier

Li, X., Liu, X., Alfadhl, Y., Ronald, K., He, W., Cross, A. & Chen, X., 30 Sep 2016, In : IEEE Transactions on Terahertz Science & Technology. 6, 5, p. 674-681 8 p.

Research output: Contribution to journal › Article

Open Access
File
Frequency selective surfaces
multipliers
selective surfaces
output
Gaussian beams
3 Citations (Scopus)
70 Downloads (Pure)

Microwave coupler for W-band micro re-entrant square cavities

Paoloni, C., Mineo, M., Yin, H., Zhang, L., He, W., Robertson, C. W., Ronald, K., Phelps, A. D. R. & Cross, A. W., 15 May 2016, In : IET Microwaves, Antennas & Propagation. 10, 7, p. 764-769 6 p.

Research output: Contribution to journal › Article

Open Access
File
Klystrons
Microwaves
Millimeter waves
Microfabrication
Amplification
2015
14 Citations (Scopus)
86 Downloads (Pure)

Electron-muon ranger: performance in the MICE muon beam

Adams, D., Alekou, A., Apollonio, M., Asfandiyarov, R., Barber, G., Barclay, P., De Bari, A., Bayes, R., Bayliss, V., Bene, P., Bertoni, R., Blackmore, V. J., Blondel, A., Blot, S., Bogomilov, M., Bonesini, M., Booth, C. N., Bowring, D., Boyd, S., Bradshaw, T. W. & 133 others, Bravar, U., Bross, A. D., Cadoux, F., Capponi, M., Carlisle, T., Cecchet, G., Charnley, C., Chignoli, F., Cline, D., Cobb, J. H., Colling, G., Collomb, N., Coney, L., Cooke, P., Courthold, M., Cremaldi, L. M., Debieux, S., Dick, A., Demello, A., Dobbs, A., Dornan, P., Drielsma, F., Filthaut, F., Fitzpatrick, T., Franchini, P., Francis, V., Fry, L., Gallagher, A., Gamet, R., Gardener, R., Gourlay, S., Grant, A., Graulich, J. S., Greis, J., Griffiths, S., Hanlet, P., Hansen, O. M., Hanson, G. G., Hart, T. L., Hartnett, T., Hayler, T., Heidt, C., Hills, M., Hodgson, P., Hunt, C., Husi, C., Iaciofano, A., Ishimoto, S., Kafka, G., Kaplan, D. M., Karadzhov, Y., Kim, Y. K., Kuno, Y., Kyberd, P., Lagrange, J. B., Langlands, J., Lau, W., Leonova, M., Lintern, A., Littlefield, M., Long, K., Luo, T., Macwaters, C., Martlew, B., Martyniak, J., Masciocchi, F., Mazza, R., Middleton, S., Moretti, A., Moss, A., Muir, A., Mullacrane, I., Nebrensky, J. J., Neuffer, D., Nichols, A., Nicholson, R., Nicola, L., Messomo, E. N., Nugent, J. C., Oates, A., Onel, Y., Orestano, D., Overton, E., Owens, P., Palladino, V., Pasternak, J., Pastore, F., Pidcott, C., Popovic, M., Preece, R., Prestemon, S., Rajaram, D., Ramberger, S., Rayner, M. A., Ricciardi, S., Roberts, T. J., Robinson, M., Rogers, C., Ronald, K., Rothenfusser, K., Rubinov, P., Rucinski, P., Sakamato, H., Sanders, D. A., Sandström, R., Santos, E., Savidge, T., Smith, P. J., Snopok, P., Soler, F. J. P., Speirs, D., Stanley, T., Stokes, G., Summers, D. J., Tarrant, J., Taylor, I., Tortora, L., Torun, Y., Tsenov, R., Tunnell, C. D., Uchida, M. A., Vankova-Kirilova, G., Virostek, S., Vretenar, M., Warburton, P., Watson, S., White, C., Whyte, C. G., Wilson, A., Wisting, H., Yang, X., Young, A. & Zisman, M., 16 Dec 2015, In : Journal of Instrumentation. 10, 12, P12012.

Research output: Contribution to journal › Article

Open Access
File
Ionization
Cooling
muons
Electron
cooling
15 Citations (Scopus)
131 Downloads (Pure)

Experimental study of microwave pulse compression using a five-fold helically corrugated waveguide

Zhang, L., Mishakin, S. V., He, W., Samsonov, S. V., McStravick, M., Denisov, G. G., Cross, A. W., Bratman, V. L., Whyte, C. G., Robertson, C. W., Young, A. R., Ronald, K. & Phelps, A. D. R., 30 Jan 2015, In : IEEE Transactions on Microwave Theory and Techniques . 63, 3, p. 1090-1096 7 p., 7027876.

Research output: Contribution to journal › Article

Open Access
File
corrugated waveguides
Pulse compression
pulse compression
Waveguides
Microwaves
46 Citations (Scopus)
178 Downloads (Pure)

Generation of broadband terahertz radiation using a backward wave oscillator and pseudospark-sourced electron beam

He, W., Zhang, L., Bowes, D., Yin, H., Ronald, K., Phelps, A. D. R. & Cross, A. W., 28 Sep 2015, In : Applied Physics Letters. 107, 13, 4 p., 133501.

Research output: Contribution to journal › Article

Open Access
File
backward waves
oscillators
wave interaction
electron beams
broadband
2014
38 Downloads (Pure)

3D PiC code investigations of auroral kilometric radiation mechanisms

Gillespie, K. M., McConville, S. L., Speirs, D. C., Ronald, K., Phelps, A. D. R., Bingham, R., Cross, A. W., Robertson, C. W., Whyte, C. G., He, W., Vorgul, I., Cairns, R. A. & Kellett, B. J., 1 Jan 2014, In : Journal of Physics: Conference Series . 511, 1, 6 p., 012051.

Research output: Contribution to journal › Article

Open Access
File
radiation
cyclotrons
simulation
radio emission
magnetic dipoles
14 Citations (Scopus)
49 Downloads (Pure)

Backward wave cyclotron-maser emission in the auroral magnetosphere

Speirs, D. C., Bingham, R., Cairns, R. A., Vorgul, I., Kellett, B. J., Phelps, A. D. R. & Ronald, K., 7 Oct 2014, In : Physical Review Letters. 113, 15, 5 p., 155002.

Research output: Contribution to journal › Article

Open Access
File
backward waves
masers
magnetospheres
cyclotrons
radiation
64 Downloads (Pure)

Investigation of a klystron with a pseudospark-sourced electron beam

Bowes, D., Yin, H., Cross, A. W., He, W., Phelps, A. D. R., Ronald, K., Chen, X. & Li, D., 2014, In : Journal of Physics: Conference Series . 511, 1, 4 p., 012020.

Research output: Contribution to journal › Article

Open Access
File
self focusing
plasma jets
high current
seeds
brightness
56 Downloads (Pure)

Numerical simulation of unconstrained cyclotron resonant maser emission

Speirs, D. C., Gillespie, K. M., Ronald, K., McConville, S. L., Phelps, A. D. R., Cross, A. W., Bingham, R., Kellett, B. J., Cairns, R. A. & Vorgul, I., 1 Jan 2014, In : Journal of Physics: Conference Series . 511, 1, 5 p., 012052.

Research output: Contribution to journal › Article

Open Access
File
masers
cyclotrons
output
radiation
simulation
2 Citations (Scopus)
139 Downloads (Pure)

Progress towards numerical and experimental simulations of fusion relevant beam instabilities

King, M., Bryson, R., Ronald, K., Cairns, R. A., McConville, S. L., Speirs, D. C., Phelps, A. D. R., Bingham, R., Gillespie, K. M., Cross, A. W., Vorgul, I. & Trines, R., 2014, In : Journal of Physics: Conference Series . 511, 1, p. 1-5 5 p., 012047.

Research output: Contribution to journal › Article

Open Access
File
fusion
simulation
astrophysics
inertial confinement fusion
masers
64 Downloads (Pure)

Scaled experiment to investigate auroral kilometric radiation mechanisms in the presence of background electrons

McConville, S. L., Ronald, K., Speirs, D. C., Gillespie, K. M., Phelps, A. D. R., Cross, A. W., Bingham, R., Robertson, C. W., Whyte, C. G., He, W., King, M., Bryson, R., Vorgul, I., Cairns, R. A. & Kellett, B. J., 1 Jan 2014, In : Journal of Physics: Conference Series . 511, 1, 6 p., 012061.

Research output: Contribution to journal › Article

Open Access
File
magnetic compression
radiation
electrons
distribution functions
waveguides
11 Citations (Scopus)
107 Downloads (Pure)

Visualization of a pseudospark-sourced electron beam

Bowes, D., Yin, H., He, W., Ronald, K., Phelps, A., Chen, D., Zhang, P., Chen, X., Li, D. & Cross, A. W., 21 Oct 2014, In : IEEE Transactions on Plasma Science. 42, 10, p. 2826-2827 2 p.

Research output: Contribution to journal › Article

Open Access
File
Electron beams
Visualization
electron beams
Phosphors
X rays
12 Citations (Scopus)
126 Downloads (Pure)

X-ray emission as a diagnostic from pseudospark-sourced electron beams

Bowes, D., Yin, H., He, W., Zhang, L., Cross, A. W., Ronald, K., Phelps, A. D. R., Chen, D., Zhang, P., Chen, X. & Li, D., 15 Sep 2014, In : Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms . 335, p. 74-77 4 p.

Research output: Contribution to journal › Article

Open Access
File
Electron beams
electron beams
X rays
x rays
Photodetectors
2013
28 Citations (Scopus)
46 Downloads (Pure)

Characterisation of the muon beams for the Muon Ionisation Cooling Experiment

Adams, D., Adey, D., Alekou, A., Apollonio, M., Asfandiyarov, R., Back, J., Barber, G., Barclay, P., de Bari, A., Bayes, R., Bayliss, V., Bertoni, R., Blackmore, V. J., Blondel, A., Blot, S., Bogomilov, M., Bonesini, M., Booth, C. N., Bowring, D., Boyd, S. & 126 others, Bradshaw, T. W., Bravar, U., Bross, A. D., Capponi, M., Carlisle, T., Cecchet, G., Charnley, G., Cobb, J. H., Colling, D., Collomb, N., Coney, L., Cooke, P., Courthold, M., Cremaldi, L. M., DeMello, A., Dick, A. J., Dobbs, A., Dornan, P., Fayer, S., Filthaut, F., Fish, A., Fitzpatrick, T., Fletcher, R., Forrest, D., Francis, V., Freemire, B., Fry, L., Gallagher, A., Gamet, R., Gourlay, S., Grant, A., Graulich, J. S., Griffiths, S., Hanlet, P., Hansen, O. M., Hanson, G. G., Harrison, P., Hart, T. L., Hartnett, T., Hayler, T., Heidt, C., Hills, M., Hodgson, P., Hunt, C., Iaciofano, A., Ishimoto, S., Kafka, G., Kaplan, D. M., Karadzhov, Y., Kim, Y. K., Kolev, D., Kuno, Y., Kyberd, P., Lau, W., Leaver, J., Leonova, M., Li, D., Lintern, A., Littlefield, M., Long, K., Lucchini, G., Luo, T., Macwaters, C., Martlew, B., Martyniak, J., Middleton, S., Moretti, A., Moss, A., Muir, A., Mullacrane, I., Nebrensky, J. J., Neuffer, D., Nichols, A., Nicholson, R., Nugent, J. C., Onel, Y., Orestano, D., Overton, E., Owens, P., Palladino, V., Palmer, R. B., Pasternak, J., Pastore, F., Pidcott, C., Popovic, M., Preece, R., Prestemon, S., Rajaram, D., Ramberger, S., Rayner, M. A., Ricciardi, S., Richards, A., Roberts, T. J., Robinson, M., Rogers, C., Ronald, K., Rubinov, P., Rucinski, R., Rusinov, I., Sakamoto, H., Sanders, D. A., Santos, E., Savidge, T., Smith, P. J., Snopok, P., Soler, F. J. P., Stanley, T., Summers, D. J., Takahashi, M., Tarrant, J., Taylor, I., Tortora, L., Torun, Y., Tsenov, R., Tunnell, C. D., Vankova, G., Verguilov, V., Virostek, S. P., Vretenar, M., Walaron, K., Watson, S., White, C., Whyte, C. G., Wilson, A., Wisting, H. & Zisman, M. S., 31 Dec 2013, In : European Physical Journal C. 73, 10, 14 p., 2582.

Research output: Contribution to journal › Article

Open Access
File
Ionization
muons
Momentum
Cooling
cooling
3 Citations (Scopus)

Circular polariser for use in a gyro-travelling wave amplifier

Robertson, C., Young, A., Ronald, K., Cross, A. & Whyte, C., 20 Aug 2013, In : IET Microwaves, Antennas & Propagation. 7, 11, p. 942-948 7 p.

Research output: Contribution to journal › Article

traveling wave amplifiers
computerized simulation
corrugated waveguides
broadband
polarized radiation
28 Citations (Scopus)

Laboratory astrophysics: investigation of planetary and astrophysical maser emission

Bingham, R., Speirs, D. C., Kellett, B. J., Vorgul, I., McConville, S. L., Cairns, R. A., Cross, A. W., Phelps, A. D. R. & Ronald, K., Oct 2013, In : Space Science Reviews. 178, 2-4, p. 695-713 19 p.

Research output: Contribution to journal › Article

laboratory astrophysics
astrophysics
masers
cyclotron frequency
plasma
2 Citations (Scopus)
77 Downloads (Pure)

Numerical simulations of unbounded cyclotron-maser emissions

Speirs, D. C., McConville, S. L., Gillespie, K. M., Phelps, A. D. R. & Ronald, K., Dec 2013, In : Journal of Plasma Physics. 79, 6, p. 999-1001 3 p.

Research output: Contribution to journal › Article

Open Access
File
masers
radio emission
cyclotrons
simulation
astrophysics
15 Citations (Scopus)
175 Downloads (Pure)

Surface field excitation by an obliquely incident wave

Konoplev, I. V., Phipps, A. R., Phelps, A. D. R., Robertson, C., Ronald, K. & Cross, A. W., Apr 2013, In : Applied Physics Letters. 102, 14, 4 p., 141106.

Research output: Contribution to journal › Article

Open Access
File
excitation
amplifiers
2012
1 Citation (Scopus)

Design of a triodelike electron gun for millimeter-wave gyrodevices

Robertson, C., Young, A., Ronald, K., Cross, A. & Whyte, C., Sep 2012, In : IEEE Transactions on Electron Devices. 59, 9, p. 2520 - 2523 4 p.

Research output: Contribution to journal › Article

Electron guns
Millimeter waves
Triodes
78 Citations (Scopus)
509 Downloads (Pure)

Multi-mode coupling wave theory for helically corrugated waveguide

Zhang, L., He, W., Ronald, K., Phelps, A. D. R., Whyte, C. G., Robertson, C. W., Young, A. R., Donaldson, C. R. & Cross, A. W., Jan 2012, In : IEEE Transactions on Microwave Theory and Techniques . 60, 1, p. 1-7 7 p.

Research output: Contribution to journal › Article

File
corrugated waveguides
coupled modes
Waveguides
Microwaves
microwaves
6 Citations (Scopus)

Numerical simulations of a co-harmonic gyrotron

Constable, D. A., Ronald, K., He, W., Phelps, A. D. R., Cross, A. W., Savilov, A. V., Bratman, V. L. & Bandurkin, I. V., 15 Feb 2012, In : Journal of Physics D: Applied Physics. 45, 6, 8 p., 065105.

Research output: Contribution to journal › Article

Cyclotrons
Harmonic generation
Waveguides
Cells
harmonics
14 Citations (Scopus)
13 Downloads (Pure)

Wideband gyro-amplifiers

Whyte, C. G., Ronald, K., Young, A. R., He, W., Robertson, C. W., Rowlands, D. H. & Cross, A. W., 9 May 2012, In : IEEE Transactions on Plasma Science. 40, 5, p. 1303-1310 8 p.

Research output: Contribution to journal › Article

Open Access
File
amplifiers
corrugated waveguides
broadband
bandwidth
power gain
2011
14 Citations (Scopus)

Auroral magnetospheric cyclotron emission processes: numerical and experimental simulations

Ronald, K., Speirs, D. C., McConville, S. L., Gillespie, K., Phelps, A. D. R., Bingham, R., Vorgul, I., Cairns, R. A., Cross, A. W., Robertson, C., Whyte, C. G., He, W. & Kellett, B. J., Jul 2011, In : Plasma Physics and Controlled Fusion. 53, 7, 11 p., 074015.

Research output: Contribution to journal › Article

Cyclotrons
Magnetosphere
cyclotrons
magnetospheres
Radiation
15 Citations (Scopus)

Cyclotron maser emission: stars, planets, and laboratory

Vorgul, I., Kellett, B. J., Cairns, R. A., Bingham, R., Ronald, K., Speirs, D. C., McConville, S. L., Gillespie, K. M. & Phelps, A. D. R., May 2011, In : Physics of Plasmas. 18, 5, p. - 7 p., 056501.

Research output: Contribution to journal › Article

masers
cyclotrons
planets
stars
cyclotron frequency
12 Citations (Scopus)

Cyclotron maser radiation from inhomogeneous plasmas

Cairns, R. A., Vorgul, I., Bingham, R., Ronald, K., Speirs, D. C., McConville, S. L., Gillespie, K. M., Bryson, R., Phelps, A. D. R., Kellett, B. J., Cross, A. W., Robertson, C., Whyte, C. G. & He, W., Feb 2011, In : Physics of Plasmas. 18, 2, p. 022902 5 p.

Research output: Contribution to journal › Article

masers
cyclotrons
radiation
plasma diffusion
space plasmas
74 Downloads (Pure)

W-band gyro-BWO with a four-stage depressed collector

Zhang, L., He, W., Donaldson, C. R., Cross, A. W., Phelps, A. D. R., McElhinney, P. & Ronald, K., Sep 2011, In : Terahertz Science & Technology. 4, 3, p. 76-84 9 p.

Research output: Contribution to journal › Article

Open Access
File
backward waves
accumulators
recovery
oscillators
secondary emission
110 Downloads (Pure)

W-band gyro-devices using helically corrugated waveguide and cusp gun: design, simulation and experiment

He, W., Donaldson, C. R., Li, F., Zhang, L., Cross, A. W., Phelps, A. D. R., Ronald, K., Robertson, C. W., Whyte, C. G. & Young, A. R., Mar 2011, In : Terahertz Science & Technology. 4, 1, p. 9-19 11 p.

Research output: Contribution to journal › Article

Open Access
File
corrugated waveguides
cusps
electron beams
backward waves
wave interaction
2010
107 Citations (Scopus)
196 Downloads (Pure)

A cusp electron gun for millimeter wave gyrodevices

Donaldson, C. R., He, W., Cross, A. W., Li, F., Phelps, A. D. R., Zhang, L., Ronald, K., Robertson, C., Whyte, C. & Young, A., 5 Apr 2010, In : Applied Physics Letters. 96, 14, 3 p., 141501.

Research output: Contribution to journal › Article

Open Access
File
electron guns
cusps
millimeter waves
thermionics
submillimeter waves
8 Citations (Scopus)

A novel cylindrical TE2,1 mode converter

Constable, D. A., Fampris, X. S., Ronald, K., He, W., Whyte, C. G. & Robertson, C. W., 17 Sep 2010, In : Review of Scientific Instruments. 81, 9, p. 094702 10 p.

Research output: Contribution to journal › Article

converters
Circular waveguides
Rectangular waveguides
Bandwidth
Computer simulation
24 Citations (Scopus)

Design and simulation of a 390 GHz seventh harmonic gyrotron using a large orbit electron beam

Li, F., He, W., Cross, A. W., Donaldson, C. R., Zhang, L., Phelps, A. D. R., Faraday Partnership in High Power RF (Funder), Scottish Universities Physics Alliance (SUPA) (Funder), Overseas Research Students Awards Scheme (ORSAS) (Funder) & Ronald, K., 30 Mar 2010, In : Journal of Physics D: Applied Physics. 43, 15, p. 155204 6 p.

Research output: Contribution to journal › Article

Circular waveguides
Electron guns
Cyclotrons
cusps
Electron beams
15 Citations (Scopus)

Excitation of surface field cavity and coherence of electromagnetic field scattering on two-dimensional cylindrical lattice

Konoplev, I. V., Fisher, L., Cross, A. W., Phelps, A. D. R., Ronald, K. & Thumm, M., 27 Dec 2010, In : Applied Physics Letters. 97, 26, 3 p., 261102.

Research output: Contribution to journal › Article

electromagnetic fields
cavities
scattering
excitation
cut-off
13 Citations (Scopus)

Experimental results on microwave pulse compression using helically corrugated waveguide

McStravick, M., Samsonov, S. V., Ronald, K., Mishakin, S. V., He, W., Denisov, G. G., Whyte, C. G., Bratman, V. L., Cross, A. W., Young, A. R., MacInnes, P., Robertson, C. W. & Phelps, A. D. R., 15 Sep 2010, In : Journal of Applied Physics. 108, 5, p. - 4 p.

Research output: Contribution to journal › Article

corrugated waveguides
pulse compression
sweep frequency
microwaves
wave packets
26 Citations (Scopus)

Generation of 3 GW microwave pulses in X-band from a combination of a relativistic backward-wave oscillator and a helical-waveguide compressor

Bratman, V. L., Denisov, G. G., Kolganov, N. G., Mishakin, S. V., Samsonov, S. V., Cross, A. W., He, W., Zhang, L., McStravick, M., Whyte, C. G., Young, A. R., Ronald, K., Robertson, C. W. & Phelps, A. D. R., Nov 2010, In : Physics of Plasmas. 17, 11, 3 p., 110703.

Research output: Contribution to journal › Article

backward waves
compressors
superhigh frequencies
oscillators
waveguides