R
R. W. Motley
Researcher at Princeton University
Publications - 48
Citations - 1823
R. W. Motley is an academic researcher from Princeton University. The author has contributed to research in topics: Plasma & Tokamak. The author has an hindex of 22, co-authored 47 publications receiving 1755 citations.
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Journal ArticleDOI
Study of high-beta magnetohydrodynamic modes and fast-ion losses in PDX
K. McGuire,Robert James Goldston,M. G. Bell,Manfred Bitter,K. Bol,K. Brau,D. Buchenauer,T. Crowley,Scott Davis,F. Dylla,H.P. Eubank,H. Fishman,R. J. Fonck,B. Grek,R.C. Grimm,R. J. Hawryluk,H. Hsuan,R. A. Hulse,R. Izzo,R. Kaita,Stanley Kaye,H.W. Kugel,David W. Johnson,J. Manickam,Dennis M. Manos,D. K. Mansfield,E. Mazzucato,R. T. McCann,D. C. McCune,D. A. Monticello,R. W. Motley,D. Mueller,K. Oasa,K. Oasa,M. Okabayashi,K. Owens,W. Park,M. Reusch,N. R. Sauthoff,G. L. Schmidt,S. Sesnic,J. D. Strachan,Clifford M Surko,Clifford M Surko,R. Slusher,R. Slusher,H. Takahashi,F. Tenney,P. Thomas,H. H. Towner,J. Valley,J. Valley,Roscoe White +52 more
TL;DR: In this paper, strong magnetohydrodynamic activity has been observed in PDX neutral-beam-heated discharges and is associated with a significant loss of fast ions and a drop in neutron emission.
Journal ArticleDOI
Lower-Hybrid Current Drive in the PLT Tokamak
S. Bernabei,C. Daughney,P. C. Efthimion,W. Hooke,J.C. Hosea,F. C. Jobes,A. Martin,E. Mazzucato,E. Meservey,R. W. Motley,J. E. Stevens,S. von Goeler,Robert R. Wilson +12 more
TL;DR: The principal current carrier appears to be a high energy (approx 100 keV) electron component, concentrated in the central 20 to 40 cm diameter core of the 80 cm discharge as mentioned in this paper.
Journal ArticleDOI
Observation of parametric instabilities in lower hybrid radio frequency heating of tokamaks
TL;DR: In this article, experimental data showed that during lower hybrid radio frequency heating of the Princeton ATC Tokamak, parametric instabilities are excited, and the ion heating correlates with the presence of the parametric spectra.
Journal ArticleDOI
Landau damping of ion acoustic waves in highly ionized plasmas
TL;DR: In this article, the damping distance of the waves was found to be independent of ion density in the range between 2 x 10/sup 10/ and 3 x 10 /sup 11/ cm/sup -3/ and equal to 0.55 and 0.14 in potassium.
Journal ArticleDOI
Formation of a 100-kA Tokamak Discharge in the Princeton Large Torus by Lower Hybrid Waves
F. C. Jobes,J. E. Stevens,R.E. Bell,S. Bernabei,A. Cavallo,T. K. Chu,Samuel Cohen,B. Denne,P. C. Efthimion,Einar Hinnov,W. Hooke,J. Hosea,E. Mazzucato,R. McWilliams,R. W. Motley,Szymon Suckewer,G. Taylor,J. Timberlake,S. von Goeler,Robert R. Wilson +19 more
TL;DR: The development of non-inductive current drive is of great importance in establishing the tokamak as a long-pulse or steady-state fusion reactor as discussed by the authors, and lower hybrid waves, carrying 200 kW of power at 800 MHz, have been launched into the Princeton Large Torus tokak to initiate and drive the discharge current to a level in excess of 100 kA.