Kevin Ronald &ndash; Research Output

2019

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

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., 4 Aug 2019, (Accepted/In press) In : IEEE Transactions on Electron Devices. 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

1 Citation (Scopus)

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

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

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 othersSakawa, 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

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, 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)

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

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., 28 Nov 2019, (Accepted/In press) In : IEEE Transactions on Electron Devices. p. 1-7 7 p.

Research output: Contribution to journal › Article

Open Access

File

Beam plasma interactions

Electron beams

Microfabrication

Surface roughness

Networks (circuits)

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

free electron lasers

microwaves

cavities

wavelengths

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., 28 Nov 2019, (Accepted/In press) In : IEEE Transactions on Electron Devices. p. 1-8 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)

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)

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

3 Citations (Scopus)

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

2 Citations (Scopus)

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)

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)

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

6 Citations (Scopus)

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)

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

13 Citations (Scopus)

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 othersBravar, 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)

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

45 Citations (Scopus)

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

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)

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

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

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)

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

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)

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)

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

27 Citations (Scopus)

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 othersBradshaw, 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)

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)

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)

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)

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

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

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)

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