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Your search keyword '"Fredrickson, E. D."' showing total 7 results
Start Over Author "Fredrickson, E. D." Journal review of scientific instruments
7 results on '"Fredrickson, E. D."'

2. Addendum to papers from the NSTX Team, published in Review of Scientific Instruments

Author

Gates, D. A., primary, Kessel, C., additional, Menard, J., additional, Taylor, G., additional, Wilson, J. R., additional, Bell, M. G., additional, Bell, R. E., additional, Bernabei, S., additional, Bialek, J., additional, Biewer, T., additional, Blanchard, W., additional, Boedo, J., additional, Bush, C., additional, Carter, M. D., additional, Choe, W., additional, Crocker, N., additional, Darrow, D. S., additional, Davis, W., additional, Delgado-Aparicio, L., additional, Diem, S., additional, Ferron, J., additional, Field, A., additional, Foley, J., additional, Fredrickson, E. D., additional, Gibney, T., additional, Harvey, R., additional, Hatcher, R. E., additional, Heidbrink, W., additional, Hill, K., additional, Hosea, J. C., additional, Jarboe, T. R., additional, Johnson, D. W., additional, Kaita, R., additional, Kaye, S., additional, Kubota, S., additional, Kugel, H. W., additional, Lawson, J., additional, LeBlanc, B. P., additional, Lee, K. C., additional, Levinton, F., additional, Maingi, R., additional, Manickam, J., additional, Maqueda, R., additional, Marsala, R., additional, Mastrovito, D., additional, Mau, T. K., additional, Medley, S. S., additional, Meyer, H., additional, Mikkelsen, D. R., additional, Mueller, D., additional, Munsat, T., additional, Nelson, B. A., additional, Neumeyer, C., additional, Nishino, N., additional, Ono, M., additional, Park, H., additional, Park, W., additional, Paul, S., additional, Peebles, T., additional, Peng, M., additional, Phillips, C., additional, Pigarov, A., additional, Pinsker, R., additional, Ram, A., additional, Ramakrishnan, S., additional, Raman, R., additional, Rasmussen, D., additional, Redi, M., additional, Rensink, M., additional, Rewoldt, G., additional, Robinson, J., additional, Roney, P., additional, Roquemore, L., additional, Ruskov, E., additional, Ryan, P., additional, Sabbagh, S. A., additional, Schneider, H., additional, Skinner, C. H., additional, Smith, D. R., additional, Sontag, A., additional, Soukhanovskii, V., additional, Stevenson, T., additional, Stotler, D., additional, Stratton, B., additional, Stutman, D., additional, Swain, D., additional, Synakowski, E., additional, Takase, Y., additional, Tritz, K., additional, von Halle, A., additional, Wade, M., additional, White, R., additional, Wilgen, J., additional, Williams, M., additional, Zhu, W., additional, Zweben, S. J., additional, Akers, R., additional, Beiersdorfer, P., additional, Betti, R., additional, and Bigelow, T., additional

Published
2009
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6. Determination of the structure of magnetic islands on TFTR (invited).

Author

Fredrickson, E. D., McGuire, K., Cavallo, A., Grek, B., Hattori, K.-I., Johnson, D., and Morris, A. W.

Subjects
*ELECTRON emission, *CYCLOTRONS
Abstract

The Mirnov coil array, the horizontal soft x-ray camera, and the ECE (electron cyclotron emission) grating polychromator are used to unfold the structure of m ≥ 2 coherent magnetic fluctuations (assumed to be tearing modes) observed in TFTR. The modes are found predominantly in the enhanced confinement, or supershot, regime, and when present seriously degrade confinement. The poloidal and toroidaI mode numbers (m and n) are determined with the Mirnov coil array. The radial structure is found by calculating the theoretical radial eigenmode (based on the calculated current-density profile) and scaling the resulting linear eigenmode with the measured fluctuation amplitude at the plasma edge. The presence of rotating magnetic islands is detected as fluctuations on both the chord-averaged soft-x-ray emissivity measurements and the fast grating polychromator electron temperature measurements. The ECE and soft-x-ray systems are used to identify coherent modes as islands and confirm estimates of the islands' location inferred from the Mirnov coil data and calculated current-density profiles. [ABSTRACT FROM AUTHOR]

Published
1988
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7. Identification of Alfven mode location via multichannel interferometer measurements (abstract) and TFTR Group

Author

Chang, Z., Fredrickson, E. D., Park, H., Nazikian, R., Budny, R. V., Wong, K. L., and McGuire, K.M.

Subjects
*MAGNETOHYDRODYNAMIC waves, *INTERFEROMETERS, *PLASMA gas research
Abstract

Presents an abstract of a paper focusing on the identification of Alfven mode location via multichannel interferometer measurements. Types of plasmas in which quasicoherent magnetohydrodynamics modes with an Alfven frequency scaling can be observed; Close correlation between the changes in the mode frequency and electron density measured by the interferometer.

Published
1997

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