James Peter Dedrick

Search results

• 2025

  Boron and phosphorus doped diamond: change in the electronic structure post exposure to low pressure deuterium plasma and its effect on the production of negative ions

  Magee, R., Pinault-Thaury, M.-A., Achard, J., Layet, J.-M., Guyomarc’h, D., Minissale, M., Gans, T., Dedrick, J. P. & Cartry, G., 7 Apr 2025, In: Journal of Physics D: Applied Physics. 58, 13 p., 185208.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
• 2024

  Ionization and neutral gas heating efficiency in radio frequency electrothermal microthrusters

  Leigh, S., Doyle, S. J., Smith, G. J., Gibson, A. R., Boswell, R. W., Charles, C. & Dedrick, J. P., 23 Feb 2024, In: Physics of Plasmas. 31, 2, 13 p., 023509.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

• Low-pressure inductively coupled plasmas in hydrogen: impact of gas heating on the spatial distribution of atomic hydrogen and vibrationally excited states

  Smith, G., Diomede, P., Gibson, A. R., Doyle, S., Guerra, V., Kushner, M. J., Gans, T. & Dedrick, J. P., 2 Feb 2024, In: Plasma Sources Science and Technology. 33, 20 p., 025002.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

• Magnetic enhancement of the electrical asymmetry effect in capacitively coupled plasmas

  Doyle, S., Charles, C., Boswell, R. & Dedrick, J. P., 9 Aug 2024, In: Journal of Physics D: Applied Physics. 57, 31, 315204.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Ozone production by an He+O2 radio-frequency atmospheric pressure plasma jet driven by tailored voltage waveforms

  Harris, B., Dedrick, J. P., Niemi, K. & Wagenaars, E., 31 Jul 2024, In: Plasma Sources Science and Technology. 33, 14 p., 075020.

  Research output: Contribution to journal › Article › peer-review

  Open Access

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• 2023

  Particle-in-cell simulations of high frequency capacitively coupled plasmas including spatially localised inductive-like heating

  Osca Engelbrecht, M., Ridgers, C. P., Dedrick, J. P. & Boswell, R., 7 Dec 2023, In: Plasma Sources Science and Technology. 32, 14 p., 125003.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

• Surface production of negative deuterium ions from plasma-exposed boron doped diamond and graphite: work function measurements using photoemission yield spectroscopy

  Magee, R. & Dedrick, J. P., 3 Aug 2023, In: Plasma Sources Science and Technology. 32, 10 p., 075021.

  Research output: Contribution to journal › Article › peer-review

  Open Access

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• 2021

  Surface production of negative ions from pulse-biased nitrogen doped diamond within a low-pressure deuterium plasma

  Smith, G., Tahri, L., Achard, J., Issaoui, R., Gans, T., Dedrick, J. P. & Cartry, G., 9 Aug 2021, In: Journal of Physics D: Applied Physics. 54

  Research output: Contribution to journal › Article › peer-review

  Open Access

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• 2020

  Characterization and Control of an Ion-Acoustic Plasma Instability Downstream of a Diverging Magnetic Nozzle

  Doyle, S., Bennet, A., Tsifakis, D., Dedrick, J. P., Boswell, R. & Charles, C., 18 Feb 2020, In: Frontiers in Physics. 11 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

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• Decoupling ion energy and flux in intermediate pressure capacitively coupled plasmas via tailored voltage waveforms

  Doyle, S., Gibson, A. R., Boswell, R., Charles, C. & Dedrick, J. P., 16 Dec 2020, In: Plasma Sources Science and Technology. 29, 12, 13 p., 124002.

  Research output: Contribution to journal › Article › peer-review

  Open Access

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• Enhancing surface production of negative ions using nitrogen doped diamond in a deuterium plasma

  Smith, G., Ellis, J., Moussaoui, R., Pardanaud, C., Martin, C., Achard, J., Issaoui, R., Gans, T., Dedrick, J. P. & Cartry, G., 20 Aug 2020, In: Journal of Physics D: Applied Physics. 53, 46

  Research output: Contribution to journal › Article › peer-review

  Open Access

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• The formation of atomic oxygen and hydrogen in atmospheric pressure plasmas containing humidity: picosecond two-photon absorption laser induced fluorescence and numerical simulations

  Schröter, S., Bredin, J., Gibson, A. R., West, A., Dedrick, J. P., Wagenaars, E., Niemi, K., Gans, T. & O'Connell, D., 15 Oct 2020, In: Plasma Sources Science and Technology. 29, 10, 17 p., 105001.

  Research output: Contribution to journal › Article › peer-review

  Open Access

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• 2019

  Control of electron, ion and neutral heating in a radio-frequency electrothermal microthruster via dual-frequency voltage waveforms

  Doyle, S. J., Gibson, A. R., Boswell, R., Charles, C. & Dedrick, J. P., 25 Mar 2019, In: Plasma Sources Science and Technology. 28, 3, 035019.

  Research output: Contribution to journal › Article › peer-review

  Open Access

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• Disrupting the spatio-temporal symmetry of the electron dynamics in atmospheric pressure plasmas by voltage waveform tailoring

  Gibson, A. R., Donkó, Z., Alelyani, L. A. A., Bischoff, L., Hübner, G., Bredin, J., Doyle, S. J., Korolov, I., Niemi, K., Mussenbrock, T., Hartmann, P., Dedrick, J. P., Schulze, J., Gans, T. & O'Connell, D., 7 Jan 2019, In: Plasma Sources Science and Technology. 28, 1, 7 p., 01LT01.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

• Inducing locally structured ion energy distributions in intermediate-pressure plasmas

  Doyle, S. J., Gibson, A. R., Boswell, R., Charles, C. & Dedrick, J. P., 31 Jul 2019, In: Physics of Plasmas.

  Research output: Contribution to journal › Article › peer-review

  Open Access

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• 2018

  Chemical kinetics in an atmospheric pressure helium plasma containing humidity

  Schröter, S., Wijaikhum, A., Gibson, A. R., West, A., Davies, H. L., Minesi, N., Dedrick, J. P., Wagenaars, E., de Oliveira, N., Nahon, L., Kushner, M. J., Booth, J.-P., Niemi, K., Gans, T. & O'Connell, D., 26 Sept 2018, In: Physical Chemistry Chemical Physics. 20, 37, p. 24263-24286 24 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

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• Spatio-temporal plasma heating mechanisms in a radio-frequency electrothermal microthruster

  Doyle, S. J., Gibson, A. R., Flatt, J., Ho, T. S., Boswell, R., Charles, C., Tian, P., Kushner, M. J. & Dedrick, J. P., 30 Aug 2018, In: Plasma sources science & technology. 27, 8, 085011.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
• 2017

  Controlled production of atomic oxygen and nitrogen in a pulsed radio-frequency atmospheric-pressure plasma

  Dedrick, J. P., Schröter, S., Niemi, K., Wijaikhum, A., Wagenaars, E., de Oliveira, N., Nahon, L., Booth, J.-P., O'Connell, D. & Gans, T., 15 Nov 2017, In: Journal of Physics D: Applied Physics. 50, 45, p. 1-7 7 p., 455204.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

• Enhanced control of the ionization rate in radio-frequency plasmas with structured electrodes via tailored voltage waveforms

  Doyle, S. J., Lafleur, T., Gibson, A. R., Tian, P., Kushner, M. J. & Dedrick, J. P., 16 Nov 2017, In: Plasma sources science & technology. 26, 12, 9 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

• Microplasma array patterning of reactive oxygen and nitrogen species onto polystyrene

  Szili, E., Dedrick, J. P., Oh, J.-S., Bradley, J., Boswell, R., Charles, C., Short, R. & A. Al-Bataineh, S., 3 Feb 2017, In: Frontiers in Physics. 5, 1, p. 1-36 36 p., 244357.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

• Phase-resolved optical emission spectroscopy of a neutralizer-free gridded ion thruster

  Dedrick, J. P., Gibson, A. R., Rafalskyi, D. & Aanesland, A., 9 Oct 2017, American Institute of Aeronautics and Astronautics: 35th International Electric Propulsion Conference.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  Open Access

  File

• Transient propagation dynamics of flowing plasmas accelerated by radio-frequency electric fields

  Dedrick, J. P., Gibson, A. R., Rafalskyi, D. & Aanesland, A., 23 May 2017, In: Physics of Plasmas. 24, 5, p. 1-5 5 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
• 2015

  A Short Review of Experimental and Computational Diagnostics for Radiofrequency Plasma Micro-thrusters

  Charles, C., Bish, A., Boswell, R., Dedrick, J. P., Greig, A., Hawkins, R. & Ho, T. S., 2015, In: Plasma chemistry and plasma processing. 36, 1, p. 29–44 16 p.

  Research output: Contribution to journal › Article › peer-review

• Atomic oxygen and hydroxyl density measurements in an atmospheric pressure RF-plasma with water admixtures using UV and synchrotron VUV absorption spectroscopy

  Schröter, S., Foucher, M., Niemi, K., Dedrick, J. P., de Oliveira, N., Joyeux, D., Nahon, L., Wagenaars, E., Gans, T., Booth, J.-P. & O'Connell, D., 2015, Proc 22nd ISPC. 4 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  Open Access

  File
• 2014

  Observations of a mode transition in a hydrogen hollow cathode discharge using phase resolved optical emission spectroscopy

  Dixon, S., Charles, C., Dedrick, J., Gans, T., O'Connell, D. & Boswell, R., 7 Jul 2014, In: Applied Physics Letters. 105, 1, 4 p., 014104.

  Research output: Contribution to journal › Article › peer-review

• Phase Resolved Imaging of a Repetitive Extrusion of Hydrogen Plasma From a Hollow Cathode Source

  Dixon, S., Dedrick, J. P., Charles, C., Gans, T., O'Connell, D. & Boswell, R. W., 21 Oct 2014, In: IEEE transactions on plasma science. 42, 10, p. 2834-2835 2 p.

  Research output: Contribution to journal › Article › peer-review
• 2013

  Formation of spatially periodic fronts of high-energy electrons in a radio-frequency driven surface microdischarge

  Dedrick, J. P., O'Connell, D., Gans, T., Boswell, R. W. & Charles, C., 25 Jan 2013, In: Applied Physics Letters. 102, 3, 4 p., 034109.

  Research output: Contribution to journal › Article › peer-review

• Induced Flow and Optical Emission Generated by a Pulsed 13.56 MHz–5 kHz Plasma Actuator

  Dedrick, J. P., Im, S.-K., Cappelli, M., Boswell, R. & Charles, C., Dec 2013, In: IEEE transactions on plasma science. 41, 12, p. 3275-3278 4 p.

  Research output: Contribution to journal › Article › peer-review

• Nanosecond optical imaging spectroscopy of an electrothermal radiofrequency plasma thruster plume

  Charles, C., Dedrick, J. P., Boswell, R., O'Connell, D. & Gans, T., 16 Sept 2013, In: Applied Physics Letters. 103, 12, 3 p., 124103.

  Research output: Contribution to journal › Article › peer-review

• Surface discharge plasma actuator driven by a pulsed 13.56 MHz–5 kHz voltage waveform

  Dedrick, J. P., Im, S.-K., Cappelli, M., Boswell, R. & Charles, C., 9 Oct 2013, In: Journal of Physics D: Applied Physics. 46, 40, 8 p., 405201.

  Research output: Contribution to journal › Article › peer-review
• 2012

  Control of diffuse and filamentary modes in an RF asymmetric surface barrier discharge in atmospheric-pressure argon

  Dedrick, J. P., Boswell, R., Rabat, H., Hong, D. & Charles, C., Oct 2012, In: Plasma sources science & technology. 21, 5, 7 p., 055016.

  Research output: Contribution to journal › Article › peer-review
• 2011

  Plasma Expansion From a Radio Frequency Microdischarge

  Boswell, R., Charles, C., Alexander, P., Dedrick, J. P. & Takahashi, K., Nov 2011, In: IEEE transactions on plasma science. 39, 11, p. 2512-2513 2 p., 12341507.

  Research output: Contribution to journal › Article › peer-review

• Plasma propagation of a 13.56 MHz asymmetric surface barrier discharge in atmospheric pressure air

  Dedrick, J. P., Boswell, R., Audier, P., Rabat, H., Hong, D. & Charles, C., 25 May 2011, In: Journal of Physics D: Applied Physics. 44, 20, 8 p., 205202.

  Research output: Contribution to journal › Article › peer-review

• Propagation Structure of a 13.56-MHz Asymmetric Surface Barrier Discharge Plasma in Atmospheric-Pressure Air

  Dedrick, J. P., Boswell, R., Audier, P., Hong, D. & Charles, C., 2011, In: IEEE transactions on plasma science. 39, 11

  Research output: Contribution to journal › Article › peer-review

• 2010

  Asymmetric surface barrier discharge plasma driven by pulsed 13.56 MHz power in atmospheric pressure air

  Dedrick, J. P., Boswell, R. W. & Charles, C., 1 Oct 2010, In: Journal of Physics D: Applied Physics. 43, 34, 6 p., 342001.

  Research output: Contribution to journal › Article › peer-review