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Featured researches published by R. D. Wood.


The tenth topical conference on radio frequency power in plasmas | 2008

Experiments on nonlinear absorption of ECH waves in MTX and a comparison with theory

Barry W. Stallard; Stephanie Allen; John A. Byers; T. A. Casper; Bruce I. Cohen; R. H. Cohen; C. J. Lasnier; M.E. Fenstermacher; J. H. Foote; E. B. Hopper; Michael A. Makowski; W.H. Meyer; J. M. Moller; Brian W. Rice; Thomas D. Rognlien; G. R. Smith; K. I. Thomassen; R. D. Wood; K. Hoshino; K. Oasa; K. Odajima; T. Ogawa; T. Oda; T. Ogo

Intense pulse electron cyclotron heating (ECH) experiments have been carried out on the MTX tokamak. Rf pulses at 140 GHz with peak power of 1–2 GW and 25 ns pulse length were generated by the ETA‐II/IM FEL and transported quasi‐optically to MTX for O‐mode launch. Because of the intense rf electric fields (∼250 kV/cm), reduction of plasma absorption by nonlinear effects was predicted and several rf beam geometries (kII gradient) were investigated to study their effect on the absorption. Measurements of beam transmission showed increases, compared to low power (2 kW), which agreed with theory to within the data scatter. For these experiments x‐ray, ECE, and Thomson diagnostics showed evidence for localized absorption at the cyclotron resonance and hot electron production. A comparison of these results with calculations from the orbit following code ORPAT will be presented.


Bulletin of the American Physical Society | 2007

Ion Doppler Spectroscopy Measurements on SSPX

J.D. King; Edward C. Morse; H.S. McLean; R. D. Wood; J.M. Moller


Archive | 1997

Remote Experimentation on DIII--D: Operations and Concepts

T. A. Casper; David N. Hill; W.H. Meyer; J. M. Moller; Barry W. Stallard; R. D. Wood; John T. Scoville; Bill McHarg; Richard Colchin; David J. Greenwood; Stephen H. Davis; Sara A. Bly


Bulletin of the American Physical Society | 2009

NIMROD Simulation of multipulsed edge-current drive in SSPX

L.L. LoDestro; Bruce I. Cohen; E.B. Hooper; H.S. McLean; R. D. Wood


Bulletin of the American Physical Society | 2009

SSPX discharges with tungsten hexacarbonyl prefill

J. Clementson; P. Beiersdorfer; H.S. McLean; R. D. Wood; E.W. Magee


Bulletin of the American Physical Society | 2008

Spheromak aspect-ratio effects on poloidal flux amplification

E.B. Hooper; H.S. McLean; C.A. Romero-Talamas; R. D. Wood


Bulletin of the American Physical Society | 2008

Evidence of a Second Order Phase Transformation in Turbulent Fusion Plasmas

Joseph A. Johnson; J.B. Titus; C.T. Raynor; Ephrem D. Mezonlin; J.M. Moller; E.B. Hooper; H.S. McLean; B. Hudson; C.A. Romero-Talamas; R. D. Wood


Bulletin of the American Physical Society | 2008

The Relationship of the n=1 Column Mode to Spheromak Formation

Bruce I. Cohen; E.B. Hooper; L.L. LoDestro; D. D. Ryutov; H.S. McLean; C.A. Romero-Talamas; R. D. Wood


Bulletin of the American Physical Society | 2008

Final Results from the SSPX Spheromak Program

H.S. McLean; Bruce I. Cohen; D.N. Hill; E.B. Hooper; B. Hudson; R. J. Jayakumar; L.L. LoDestro; J.D. King; J.M. Moller; C.A. Romero-Talamas; T.L. Stewart; R. D. Wood; E.C. Morse; Joseph A. Johnson; Ephrem D. Mezonlin; J.B. Titus; C.R. Sovinec


Bulletin of the American Physical Society | 2008

Numerical and experimental investigations of helicity sustainment in spheromaks

C.A. Romero-Talamas; E.B. Hooper; H.S. McLean; T.L. Stewart; B. Hudson; L.L. LoDestro; R. D. Wood; J.M. Moller; R.W. Geer; R.O. Kemptner

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H.S. McLean

Lawrence Livermore National Laboratory

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D.N. Hill

Lawrence Livermore National Laboratory

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E. Bickford Hooper

Lawrence Livermore National Laboratory

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Simon Woodruff

University of Washington

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Bruce I. Cohen

Lawrence Livermore National Laboratory

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Barry W. Stallard

Lawrence Livermore National Laboratory

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M.E. Fenstermacher

Lawrence Livermore National Laboratory

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Stephanie Allen

Lawrence Livermore National Laboratory

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C.T. Holcomb

Lawrence Livermore National Laboratory

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