Overcoming ammonia synthesis scaling relations with plasma-enabled catalysis

P Mehta, P Barboun, FA Herrera, J Kim, P Rumbach… - Nature Catalysis, 2018 - nature.com
Correlations between the energies of elementary steps limit the rates of thermally catalysed
reactions at surfaces. Here, we show how these limitations can be circumvented in ammonia …

The impact of transition metal catalysts on macroscopic dielectric barrier discharge (DBD) characteristics in an ammonia synthesis plasma catalysis reactor

FA Herrera, GH Brown, P Barboun… - Journal of Physics D …, 2019 - iopscience.iop.org
When non-equilibrium, low-temperature plasmas and catalysts interact, they can exhibit
synergistic behavior that enhances the chemical activity above what is possible with either …

Second harmonic 527-GHz gyrotron for DNP-NMR: Design and experimental results

SK Jawla, RG Griffin, IA Mastovsky… - IEEE transactions on …, 2019 - ieeexplore.ieee.org
We report the design and experimental demonstration of a frequency tunable terahertz
gyrotron at 527 GHz built for an 800-MHz dynamic nuclear polarization enhanced nuclear …

Conversion of carbon dioxide in microwave plasma torch sustained by gyrotron radiation at frequency of 24 GHz at atmospheric pressure

D Mansfeld, S Sintsov, N Chekmarev… - Journal of CO2 …, 2020 - Elsevier
The first experimental results of using focused continuous microwave radiation of the
gyrotron at a frequency of 24 GHz and power up to 5 kW for carbon dioxide decomposition …

Experimental investigation of ionization front propagating in a 28 GHz gyrotron beam: Observation of plasma structure and spectroscopic measurement of gas …

K Tabata, Y Harada, Y Nakamura… - Journal of Applied …, 2020 - pubs.aip.org
Atmospheric millimeter-wave discharge was investigated experimentally using a 28 GHz
gyrotron. The propagation velocity of an ionization front, plasma structure, and vibrational …

Experimental investigations on a 500GHz continuously frequency-tunable gyrotron

T Song, X Qi, Z Yan, P Liang, C Zhang… - IEEE Electron …, 2021 - ieeexplore.ieee.org
A 500 GHz TE 85 mode continuously frequency-tunable gyrotron has been designed,
fabricated and investigated experimentally. In the experiment, the gyrotron operates at the …

[HTML][HTML] Electron density and gas density measurements in a millimeter-wave discharge

SC Schaub, JS Hummelt, WC Guss, MA Shapiro… - Physics of …, 2016 - pubs.aip.org
Electron density and neutral gas density have been measured in a non-equilibrium air
breakdown plasma using optical emission spectroscopy and two-dimensional laser …

Optical emission spectroscopy of non-equilibrium microwave plasma torch sustained by focused radiation of gyrotron at 24 GHz

S Sintsov, K Tabata, D Mansfeld… - Journal of Physics D …, 2020 - iopscience.iop.org
The excitation and gas temperature of a non-equilibrium argon plasma torch sustained by a
focused 24 GHz microwave beam in the external atmosphere of air was measured by optical …

Propagation of microwave breakdown in argon induced by a 28 GHz gyrotron beam

K Shimamura, J Yamasaki, K Miyawaki, R Minami… - Physics of …, 2021 - pubs.aip.org
An atmospheric argon discharge plasma was induced by a high-power microwave beam
using a 28 GHz gyrotron and investigated at pressures of 40 kPa–100 kPa and Gaussian …

Effect of Approach Speed and Electrode Geometry on Electrostatic Discharges Off Floating Dielectrics

B Esser, Z Cardenas, JT Mockert… - … on Plasma Science, 2024 - ieeexplore.ieee.org
With the damaging effects of electrostatic discharges (ESDs), it is important to study them
within various parameter regimes relevant to real-world scenarios. One such scenario …