Search Results - "Peebles, W.A."

Observation of long-radial-range-correlation in turbulence in high-collisionality high-confinement plasmas on DIII-D by Hong, R., Rhodes, T.L., Diamond, P.H., Ren, Y., Zeng, L., Jian, X., Barada, K., Wang, G., Peebles, W.A.

“…Abstract We report on the observation of spatially asymmetric turbulent structures with a long radial correlation length in the core of high-collisionality H…”
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Core electron temperature turbulence and transport during sawtooth oscillations in the DIII-D tokamak by Wang, G., Rhodes, T.L., Pratt, Q.T., Peebles, W.A., Crocker, N.A., Hong, R., Austin, M.E., Van Zeeland, M.A., Smith, S.P.

“…Abstract Sawteeth are one of the concerning instabilities in ITER and future burning plasma experiments. Sawtooth dynamics and its interaction with broadband…”
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Multitude of Core-Localized Shear Alfven Waves in a High-Temperature Fusion Plasma by Nazikian, R., Budny, R.V., Gorelenkov, N.N., Kramer, G.J., Solomon, W.M., Berk, H.L., Burrell, K.H., La Haye, R.J., Strait, E.J., Doyle, E.J., Peebles, W.A., Rhodes, T.L., Zeng, L., Fonck, R.J., McKee, G.R., Holcomb, C., Jayakumar, R.J., Makowski, M.A., VanZeeland, M.A.

“…Evidence is presented for a multitude of discrete frequency Alfven waves in the core of magnetically confined high-temperature fusion plasmas. Multiple…”
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Experimental evidence for self-organized criticality in tokamak plasma turbulence by Rhodes, T.L., Moyer, R.A., Groebner, R., Doyle, E.J., Lehmer, R., Peebles, W.A., Rettig, C.L.

“…Measurements of plasma turbulence spectra and particle flux from the DIII-D tokamak exhibit significant agreement with predictions of self-organized…”
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SOL and pedestal density profile evolution during DIII-D ELMy and ELM-suppressed H-mode operation by Zeng, L., Wang, G., Doyle, E.J., Rhodes, T.L., Peebles, W.A., Fenstermacher, M.E., Evans, T.E., Moyer, R.A.

“…A fast profile reflectometer has been used to study the detailed characteristics of scrape-off-layer (SOL) and pedestal density profile evolution in DIII-D…”
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Initial results of H-mode edge pedestal turbulence evolution with quadrature reflectometer measurements on DIII-D by Wang, G., Peebles, W.A., Doyle, E.J., Rhodes, T.L., Zeng, L., Nguyen, X., Osborne, T.H., Snyder, P.B., Kramer, G.J., Nazikian, R., Groebner, R.J., Burrell, K.H., Leonard, A.W., Fenstermacher, M.E., Strait, E.J.

“…High-resolution quadrature reflectometer measurements of density fluctuation levels have been obtained on DIII-D for H-mode edge pedestal studies. Initial…”
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Results of NSTX heating experiments by Mueller, D., Ono, M., Bell, M.G., Bell, R.E., Bitter, M., Bourdelle, C., Darrow, D.S., Efthimion, P.C., Fredrickson, E.D., Gates, D.A., Goldston, R.J., Grisham, L.R., Hawryluk, R.J., Hill, K.W., Hosea, J.C., Jardin, S.C., Ji, H., Kaye, S.M., Kaita, R., Kugel, H.W., Johnson, D.W., LeBlanc, B.P., Majeski, R., Mazzucato, E., Medley, S.S., Menard, J.E., Park, H.K., Paul, S.F., Phillips, C.K., Redi, M.H., Rosenberg, A.L., Skinner, C.H., Soukhanovskii, V.A., Stratton, B., Synakowski, E.J., Taylor, G., Wilson, J.R., Zweben, S.J., Dorland, W.D., Peng, Y.K.M., Barry, R., Bigelow, T., Bush, C.E., Carter, M., Maingi, R., Menon, M., Ryan, P.M., Swain, D.W., Wilgen, J., Sabbagh, S.A., Paoletti, F., Bialek, J., Zhu, W., Raman, R., Jarboe, T.R., Nelson, B.A., Maqueda, R.J., Wurden, G.A., Pinsker, R.I., Schaffer, M., Ferron, J., Lao, L., Stutman, D., Finkenthal, M., Wampler, W., Kubota, S., Peebles, W.A., Gilmore, M., Mau, T.K., Lee, K.C., Domier, C.W., Deng, B.H., Johnson, M., Luhmann, N.C., Bonoli, P., Bers, A., Ram, A., Akers, R., Takase, Y., Ejiri, A., Ono, Y., Shiraiwa, S., Nishino, N., Mitarai, O., Nagata, M., Yang, J.G., Na, H., Pacella, D.

“…The National Spherical Torus Experiment (NSTX) at Princeton University, Princeton, NJ, is designed to assess the potential of the low-aspect-ratio spherical…”
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Internal Electric Field Structure of Launched Fast Magnetosonic Waves in the DIII-D Tokamak by Lee, J. H., Peebles, W. A., Jaeger, E. F., Doyle, E. J., Luhmann, N. C., Petty, C. C., Pinsker, R. I., Prater, R., Rhodes, T. L.

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Observation of a high-density ion mode in Tokamak microturbulence by BROWER, D. L, PEEBLES, W. A, KIM, S. K, LUHMANN, N. C. JR, TANG, W. M, PHILLIPS, P. E

“…For high-density Ohmic discharges in the Texas Experimental Tokamak (TEXT), a distinct ion mode (i.e., density fluctuations propagating in the ion diamagnetic…”
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Experimental measurement of electron particle diffusion from sawtooth-induced density-pulse propagation in the Texas experimental tokamak by KIM, S. K, BROWER, D. L, PEEBLES, W. A, LUHMANN, N. C. JR

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Multichannel scattering studies of the spectra and spatial distribution of tokamak microturbulence by BROWER, D. L, PEEBLES, W. A, LUHMANN, N. C. JR, SAVAGE, R. L. JR

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Status of the diagnostic development for the Tokamak Physics Experiment by Medley, S.S., Peebles, W.A., West, P., Wurden, G., Neilson, G.H.

“…Summary form only given. A superconducting tokamak physics experiment (TPX) is being designed by an integrated US national team to develop and demonstrate…”
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Confinement degradation and enhanced microturbulence as long-time precursors to high-density-limit tokamak disruptions by Brower, DL, Yu, CX, Bravenec, RV, Lin, H, Luhmann, Jr, NC, Peebles, WA, Ritz, CP, Smith, BA, Wootton, AJ, Zhang, ZM, Zhao, SJ

“…Long-time precursors of order 5 times the global energy confinement time are observed for disrupting plasmas at the high-density limit on the Texas…”
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Experimental evidence for coupling of plasma particle and heat transport in the TEXT tokamak by BROWER, D. L, KIM, S. K, RITZ, C. P, YU, C. X, WENZEL, K. W, AUSTIN, M. E, FOSTER, M. S, GANDY, R. F, LUHMANN, N. C, MCCOOL, S. C, NAGATSU, M, PEEBLES, W. A

“…Detailed measurements of heat and particle transport are made on the TEXT tokamak by analyzing the dynamics of the postcrash sawtooth perturbation. Both the…”
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A high-power CH/sub 3/F laser for plasma diagnostics by Lehecka, T., Peebles, W.A., Savage, R.L., Luhmann, N.C.

“…A high-power, optically pumped, methyl fluoride laser operating at 496 mu m has been developed for plasma diagnostic applications. An output power of 100 mW…”
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Study of Low-Frequency Microturbulence in the Microtor Tokamak by Far-Infrared Laser Scattering by Semet, A., Mase, A., Peebles, W. A., Luhmann, N. C., Zweben, S.

“…Far-infrared collective laser scattering measurements of low-frequency microturbulence in the Microtor tokamak plasma are reported. Spatially and temporally…”
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Brower et al. reply by Brower, DL, Yu, CX, Bravenec, RV, Lin, H, Luhmann, Jr, NC, Peebles, WA, Ritz, CP, Smith, BA, Wootton, AJ, Zhang, ZM, Zhao, SJ

“…The authors reply to the comment on confinement degradation and enhanced microturbulence as long{minus}time precursors to high{minus}density{minus}limit text…”
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Observation of second-harmonic ion Bernstein waves excited by fast-wave mode conversion in the Microtor tokamak by PARK, H, LUHMANN, N. C. JR, PEEBLES, W. A, KIRKWOOD, R

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Far-infrared superradiant laser action in methyl fluoride by Evans, D. E., Sharp, L. E., James, B. W., Peebles, W. A.

“…Submillimeter laser pulses exceeding 1-MW power have been generated superradiantly in CH3F gas pumped by 200 MW of 9.55-μ CO2 TEA laser radiation. When…”
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Implementation of a far-infrared interferometer on the Madison Symmetric Torus by Burns, S.R., Peebles, W.A., Holly, D., Lovell, T., Prager, S.

“…A collaboration between IPFR (Institute for Plasma and Fusion Research) at UCLA and the University of Wisconsin at Madison has begun in order to study the…”
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