Search Results - "Robertson, C. W."

Volume and surface mode coupling experiments in periodic surface structures for use in mm-THz high power radiation sources by MacLachlan, A. J., Robertson, C. W., Cross, A. W., Phelps, A. D. R.

“…Planar Periodic Surface Lattice (PSL) structures of different configurations have been designed, fabricated and measured in the 140-220 GHz frequency band…”
Get full text

Efficient, 0.35-THz Overmoded Oscillator Based on a Two-Dimensional Periodic Surface Lattice by MacLachlan, A. J., Robertson, C. W., Cross, A. W., Phelps, A. D. R.

“…We present the theory, design, and numerical modeling of a cylindrical, two-dimensional periodic surface lattice (2D-PSL) intended for use as the interaction…”
Get full text

The Effects of Electron Cyclotron Absorption in Powerful Narrow-Band Sub-THz Oscillators Exploiting Volume and Surface Modes by MacLachlan, A. J., Robertson, C. W., Cross, Adrian W., Phelps, A. D. R.

“…We present the theory, design, and numerical modeling of novel, pulsed sub-THz oscillators based on cylindrical, 2-D periodic surface lattice (PSL) interaction…”
Get full text

Beam Energy Dependence of Fifth- and Sixth-Order Net-Proton Number Fluctuations in Au+Au Collisions at RHIC by Aboona, B E, Adam, J, Adamczyk, L, Adams, J R, Aggarwal, I, Aggarwal, M M, Ahammed, Z, Anderson, D M, Aschenauer, E C, Atchison, J, Bairathi, V, Baker, W, Ball Cap, J G, Barish, K, Bellwied, R, Bhagat, P, Bhasin, A, Bhatta, S, Bielcik, J, Bielcikova, J, Brandenburg, J D, Cai, X Z, Caines, H, Calderón de la Barca Sánchez, M, Cebra, D, Ceska, J, Chakaberia, I, Chaloupka, P, Chan, B K, Chang, Z, Chen, D, Chen, J, Chen, J H, Chen, Z, Cheng, J, Cheng, Y, Choudhury, S, Christie, W, Chu, X, Crawford, H J, Csanád, M, Dale-Gau, G, Das, A, Daugherity, M, Deppner, I M, Dhamija, A, Di Carlo, L, Didenko, L, Dixit, P, Dong, X, Drachenberg, J L, Duckworth, E, Dunlop, J C, Engelage, J, Eppley, G, Esumi, S, Evdokimov, O, Ewigleben, A, Eyser, O, Fatemi, R, Fazio, S, Feng, C J, Feng, Y, Finch, E, Fisyak, Y, Flor, F A, Fu, C, Gagliardi, C A, Galatyuk, T, Geurts, F, Ghimire, N, Gibson, A, Gopal, K, Gou, X, Grosnick, D, Gupta, A, Guryn, W, Hamed, A, Han, Y, Harabasz, S, Harasty, M D, Harris, J W, Harrison, H, He, W, He, X H, He, Y, Heppelmann, S, Herrmann, N, Holub, L, Hu, C, Hu, Q, Hu, Y, Huang, H, Huang, H Z, Huang, S L, Huang, T, Huang, X, Huang, Y, Huang, Y, Humanic, T J

“…We report the beam energy and collision centrality dependence of fifth and sixth order cumulants (C_{5}, C_{6}) and factorial cumulants (κ_{5}, κ_{6}) of…”
Get full text

Experimental study of coaxial free-electron maser based on two-dimensional distributed feedback by Konoplev, I V, McGrane, P, He, W, Cross, A W, Phelps, A D R, Whyte, C G, Ronald, K, Robertson, C W

“…The first experimental study of a coaxial free-electron maser (FEM) based on two-dimensional (2D) distributed feedback is presented. A new type of cavity…”
Get full text

Identifying dementia in Down syndrome with the Severe Impairment Battery, Brief Praxis Test and Dementia Scale for People with Learning Disabilities by Wallace, E. R., Harp, J. P., Van Pelt, K. L., Koehl, L. M., Caban‐Holt, A. M., Anderson‐Mooney, A. J., Jicha, G. A., Lightner, D. D., Robertson, W. C., Head, E., Schmitt, F. A.

“…Background Individuals with Down syndrome (DS) are at high risk for dementia, specifically Alzheimer's disease. However, many measures regularly used for the…”
Get full text

Cylindrical, periodic surface lattice—Theory, dispersion analysis, and experiment by Konoplev, I. V., MacLachlan, A. J., Robertson, C. W., Cross, A. W., Phelps, A. D. R.

“…A two-dimensional surface lattice of cylindrical topology obtained via perturbing the inner surface of a cylinder is considered. Periodic perturbations of the…”
Get full text

Mode coupling in periodic surface lattice and metamaterial structures for mm-wave and THz applications by MacLachlan, A. J., Robertson, C. W., Ronald, K., Cross, A. W., Phelps, A. D. R.

“…Planar periodic surface lattice (PSL) structures based on thin, subwavelength substrates have been studied experimentally and numerically. Coupled eigenmode…”
Get full text

Wideband Gyro-Amplifiers by Whyte, C. G., Ronald, K., Young, A. R., He, W., Robertson, C. W., Rowlands, D. H., Cross, A. W.

“…Gyro-amplifiers using helically corrugated waveguides have shown exceptional gain, power, bandwidth, and efficiency performance at cm and mm wavelengths. The…”
Get full text

Design of a Triodelike Electron Gun for Millimeter-Wave Gyrodevices by Robertson, C. W., Young, A. R., Ronald, K., Cross, A. W., Whyte, C. G.

“…A computational study has been made on the design of a 150-kV triodelike switchable electron gun. A smooth magnetic cusp arrangement was used to produce an…”
Get full text

Experimental and theoretical studies of a coaxial free-electron maser based on two-dimensional distributed feedback by Konoplev, I V, Cross, A W, Phelps, A D R, He, W, Ronald, K, Whyte, C G, Robertson, C W, MacInnes, P, Ginzburg, N S, Peskov, N Yu, Sergeev, A S, Zaslavsky, V Yu, Thumm, M

“…The first operation of a coaxial free-electron maser (FEM) based on two-dimensional (2D) distributed feedback has been recently observed. Analytical and…”
Get full text

Periodic Surface Lattice Overmoded W-Band Source by Cross, A. W., MacLachlan, A. J., Robertson, C. W., Yin, H., Phipps, A. R., Ronald, K., Phelps, A. D. R.

“…Numerical simulation codes have been used to design an electron beam driven W -band millimeter-wave source, in which a cylindrical two dimensional (2D)…”
Get full text

Laboratory experiments simulating electron cyclotron masers in space by 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.

Get full text

Application of a pseudospark-generated electron beam to a 200 GHz backward wave oscillator by Yin, H., Bowes, D., Cross, A. W., He, W., Ronald, K., Liu, G., Yin, Y., Zhang, L., Speirs, D. C., Robertson, C. W., Phelps, A. D. R.

“…Summary form only given. The pseudospark discharge is a form of low-pressure gas discharge capable of generating extremely high currents with short rise times…”
Get full text

Cherenkov maser experiments based on a 2D Periodic Surface Lattice by Phipps, A. R., MacLachlan, A. J., Robertson, C. W., Konoplev, I. V., Ronald, K., Cross, A. W., Whyte, C. G., Phelps, A. D. R.

“…Numerical finite difference time domain and Particle-In-Cell simulations have demonstrated an electron wave interaction in a Cherenkov maser utilizing a…”
Get full text

Gyro-BWO experiments using a helical interaction waveguide by He, W., Ronald, K., Young, A.R., Cross, A.W., Phelps, A.D.R., Whyte, C.G., Rafferty, E.G., Thomson, J., Robertson, C.W., Speirs, D.C., Samsonov, S.V., Bratman, V.L., Denisov, G.G.

“…A helically corrugated waveguide was used for a gyrotron backward-wave oscillator (gyro-BWO) experiment. A thermionic cathode was used to produce an electron…”
Get full text

Quasi-optical output for a high gain, broadband W-band amplifier by Donaldson, C. R., Smith, G. M., Robertson, D. A., Robertson, C. W., Zhang, L., MacInnes, P., Whyte, C. G.

“…The gyrotron-traveling wave amplifier (gyro-TWA), operating in W-band has previously been shown to provide an unsaturated output power of 3.4 kW over a 3-dB…”
Get full text

Investigations of a high gain W-band gyro-TWA by Donaldson, C. R., MacInnes, P., Robertson, C. W., Zhang, L., Whyte, C. G.

“…This paper presents a numerical investigation of alternate gyrotron Traveling Wave Amplifier (gyro-TWA) configurations for increased gain. Previous…”
Get full text

Enhancement of Enzyme-Activated 1,2-Dioxetane Chemiluminescence in Membrane-Based Assays by Kobos, R.K., Blue, B.A., Robertson, C.W., Kielhorn, L.A.

“…Processes for enhancing the chemiluminescent signal generated by enzyme-activated 1,2-dioxetanes have been developed for membrane-based assays in which…”
Get full text

Highly Overmoded MM-wave Oscillator Experiments by Cross, A. W., MacLachlan, A. J., Robertson, C. W., Zhang, L., Ronald, K., Phelps, A. D. R.

“…Overmoded oscillator research has been an active area of interest at the University of Strathclyde for several years. Interaction structures based on complex…”
Get full text