Results 61 to 70 of about 305,568 (222)

Measurements of Auroral Plasma Properties Using Low‐Cost, Mobile, Ground‐Based Detectors

Earth and Space Science, Volume 12, Issue 9, September 2025.
Abstract An expedition to Fairbanks, AK, was undertaken to study the aurora during the peak of solar cycle 25. Low‐cost diagnostics were developed to enable ground‐based measurements of ionospheric plasma parameters and auroral phenomena, namely a compact spectrometer and a high‐resolution all‐sky camera with 2‐axis magnetometer. Observations were made
S. Mackie, J. Rivera, T. Evans, J. L. Ball, S. Dannhoff, J. Heinzel, J. Van de Lindt, S. Moroch   +7 more
wiley   +1 more source

Spherical tokamak physics research in preparation for the operation of NSTX-U

Nuclear Fusion
The National Spherical Torus Experiment Upgrade (NSTX-U) is preparing to resume operation, representing a crucial step toward realizing compact, cost-effective fusion pilot plants.
S. Munaretto, P.O. Adebayo-Ige, H. Anand, G. Avdeeva, S.G. Baek, K. Barada, E. Belli, E.V. Belova, J.W. Berkery, T.N. Bernard, N. Bertelli, P. Bonofiglo, P.T. Bonoli, M.D. Boyer, J. Candy, C.S. Chang, H. Chung, C. Clauser, M. Comanescu, D. Corona, N.A. Crocker, R. De Levante Rodriguez, E.W. DeShazer, A. Diallo, J. Dominski, V.N. Duarte, F. Ebrahimi, E.D. Emdee, S. Ethier, N.M. Ferraro, E.L. Foley, E.D. Fredrickson, M.E. Galante, K.F. Gan, S. Gerhardt, R.J. Goldston, M. Gorelenkova, W. Guttenfelder, R. Hager, F.D. Halpern, J. Halpern, D. Hatch, F. Hoffmann, M.S. Islam, S.C. Jardin, S.M. Kaye, A. Khodak, J.E. Kinsey, A. Kleiner, E. Kolemen, S. Ku, M. Lampert, B. Leard, B.P. LeBlanc, J.B. Lestz, F.M. Levinton, P.-Y. Li, N.C. Logan, N.A. Lopez, R. Lunsford, T. Macwan, R. Maingi, J. McClenaghan, A.G. McLean, J.E. Menard, Y.-S. Na, A.O. Nelson, M. Ono, A. Pajares, A. Pankin, J. Parisi, F.I. Parra, M.S. Parsons, B.S. Patel, M. Podestá, F.M. Poli, M. Porcelli, T. Rafiq, R. Raman, J.D. Riquezes, S.A. Sabbagh, A. Sanchez-Villar, E. Schuster, S. Shiraiwa, T. Singh, S.P. Smith, D. Smith, V.A. Soukhanovskii, G.M. Staebler, B. Stratton, K.E. Thome, M. Tobin, I.U. Uzun-Kaymak, B. Van Compernolle, W.X. Wang, W. Wehner, A.S. Welander, B.D. Wirth, J. Yang, V. Zamkovska, X. Zhang   +100 more
doaj   +1 more source

Fast and Invertible Simplicial Approximation of Magnetic‐Following Interpolation for Visualizing Fusion Plasma Simulation Data

Computer Graphics Forum, Volume 44, Issue 3, June 2025.
Abstract We introduce a fast and invertible approximation for fusion plasma simulation data represented as 2D planar meshes with connectivities approximating magnetic field lines along the toroidal dimension in deformed 3D toroidal spaces. Scientific variables (e.g., density and temperature) in these fusion data are interpolated following a complex ...
Congrong Ren, Robert Hager, Randy Michael Churchill, Albert Mollén, Seung‐Hoe Ku, Choong‐Seock Chang, Hanqi Guo   +6 more
wiley   +1 more source

Overview of the MAST Upgrade physics programme: testing novel concepts at low aspect ratio to inform future devices

Nuclear Fusion
The research programme performed on the Mega Amp Spherical Tokamak (MAST) Upgrade experiment has made significant advances in developing the physics understanding of low aspect ratio tokamaks in support of the operation of ITER and design of fusion ...
J.R. Harrison, A. Aboutaleb, M. Aljunid, S.Y. Allan, R. Allan, A. Alli, H. Anand, Y. Andrew, L.C. Appel, A. Ash, J. Ashton, F. Auriemma, O. Bachmann, S. Bakes, P. Balazs, O. Bardsley, M. Barnes, B. Barrett, D. Baver, C. Beckley, J. Bennett, J. Bentley, J. Berkery, M. Bernert, N. Bertelli, P. Bilkova, S. Blackmore, A. Bock, W. Boeglin, P. Bohm, J. Booth, A. Bosnjak, C. Bowman, J. Bradley, L. Bramucci, D. Brida, M. Brix, P.K. Browning, D. Brunetti, P. Bryant, J. Bryant, J. Buchanan, M. Bull, M. Bulman, N. Bulmer, D. Burke, P. Cahill, P. Cano-Megías, M. Carpita, A. Carruthers, L. Casali, A. Cassidy, F. Causa, M. Cecconello, A. Celora, M. Cha, B. Chamberlain, B. Chapman, B. Chapman-Oplopoiou, R. Chazal, X. Chen, J. Clark, M. Clark, T. Clayton, K. Collie, D. Collishaw-Schepman, J.W. Connor, M. Coy, S. Cramp, N. Crocker, D. Cruse, G. Cunningham, M. Czarski, I. Cziegler, Y. Damizia, P. Davies, K. Davies, I. Day, E. Delabie, G.L. Derks, S. Dixon, J. Dobrashian, M. Dreval, X. Du, H. Dudding, D. Dunai, M. Dunne, F. Ebrahimi, J. Edmond, J. Edwards, H. El-Haroun, S. Elmore, Y. Enters, M. Faitsch, F. Federici, N. Fedorczak, F. Felici, N. Ferraro, A.R. Field, P. Figueiredo, I. FitzGerald, M. Fitzgerald, R. Fitzpatrick, C. Fitzpatrick, S. Frankel, L. Frassinetti, D. Frattolillo, S. Freethy, W. Fuller, R. Futtersack, S. Gabriellini, K. Gage, J. Galdon, J. Galdon-Quiroga, M. Gambrioli, C. Garner, L. Garzotti, T.E. Gheorghiu, K.J. Gibson, C. Gibson, E. Giovannozzi, C. Giroud, J. Goatley, A. Goodyear, M. Gorelenkova, S. Gosden, G. Grassler, J.P. Graves, D. Greenhouse, R. Griffiths, V.H. Hall-Chen, C.J. Ham, E. Harrington, R. Harrison, A. Haupt, J. Hawes, S. Hegedus, S.S. Henderson, C. Heo, C. Hickling, M. Hill, B. Hnat, C. Hogben, B. Honey, L. Howlett, Z. Huang, A. Hudoba, J. Hughes, R. Hussain, K. Imada, P. Ivanov, A. Jackson, P. Jacquet, F. Jaulmes, P. Jepson, T. Jones, P. Jones, M. Juvonen, V. Kachkanov, B. Kandan, I. Katramados, S. Kaye, Y.O. Kazakov, D. Keeling, D. Kennedy, A. Kenny, H-T. Kim, D. King, R. King, A. King, V. Kiptily, A. Kirjasuo, A. Kirk, A. Kit, A. Kleiner, M. Knolker, S. Kobussen, M. Kochan, L. Kogan, B. Kool, D. Kos, M. Kotschenreuther, M. Lampert, A. Lawson, K. Lawson, K.-W. Lee, G. Lee, J. Lee, M. Lees, S. Leigh, A.W. Leonard, G. Liddiard, B. Lipschultz, E. Litherland-Smith, Y.Q. Liu, B.A. Lomanowski, J. Lombardo, N. Lonigro, J. Lore, J. Lovell, R. Lucock, T. Luong, A. Lvovskiy, J. Macdonald, T. Macwan, S. Mahajan, F. Maiden, R. Maingi, C. Man-Friel, F. Mansfield, M. Markl, S. Marsden, R. Martin, R. Mathew, R. Maurizio, U. Mazzarese, S. Mazzi, R. McAdams, G. McArdle, J. McBride, K. McClements, J. McClenaghan, D. McConville, K. McKay, C. McKnight, P. McKnight, A. McLean, B.F. McMillan, A. McShee, J. Measures, N. Mehay, S. Menmuir, H.F. Meyer, C.A. Michael, F. Militello, I.G. Miron, R. Mishra, J. Mitchell, D. Moiraf, P. Monaghan, R. Mooney, N. Mooring, R. Morales Gomes, D. Morbey, S. Mordijck, C. Morgan, J. Morris, D. Moulton, S. Munaretto, A. Munasinghe, A. Muraro, O. Myatra, Y.-S. Na, T.F. Neiser, A.O. Nelson, S.L. Newton, M. Nicassio, M.G. O’Mullane, C. Olde, H.J. Oliver, P. Ollus, J. Omotani, M. Ono, F.P. Orsitto, R. Osawa, N. Osborne, T. Osborne, R. Otin, E. Ozturk, F. Palermo, A. Pankin, I. Paradela Pérez, J. Parisi, E. Parr, B. Parry, B.S. Patel, E. Pawelec, D. Payne, C. Paz-Soldan, A. Phelps, L. Piron, C. Piron, G. Pokol, R. Preece, M. Price, B. Pritchard, R. Proudfoot, G. Pucella, T. Pumfrett, D.-Y. Pyo, H. Reimerdes, T. Rhodes, E. Ribeiro, D. Rigamonti, J. Riquezes, J.F. Rivero-Rodriguez, J. Roberts, M. Robson, K. Ronald, E. Rose, D. Ryan, P. Ryan, S. Saarelma, S. Sabbagh, A. Salmi, R. Sarwar, P. Saunders, O. Sauter, R. Scannell, R. Sealey, R. Seath, S. Sharapov, R. Sharma, H. Sheikh, S. Shiraiwa, B. Sieglin, S.A. Silburn, M. Simmonds, J. Simpson, A. Sladkomedova, J. Smith, P. Smith, M. Sos, V.A. Soukhanovskii, D. Speirs, C. Srinivasan, G. Staebler, R. Stephen, P. Stevenson, J. Stobbs, C. Stroud, H. Sun, H. Sun, G. Szepesi, D.M. Takács, T. Tala, C. Tame, C. Theiler, B. Thomas, S. Thomas, S. Thomas, N. Thomas-Davies, A.J. Thornton, A. Tilley, I. Tirkova, M. Tobin, E. Tomasina, A. Tonel, P. Tonner, A. Tookey, G. Tvalashvili, M. Vallar, M. Valovic, R.G.L. Vann, L. Velarde, L. Velarde, K. Verhaegh, E. Viezzer, C. Vincent, M. Walsh, T. Walsh, M. Warr, S. Wiesen, T.A. Wijkamp, D. Wilkins, J. Willis, T. Wilson, H.R. Wilson, N. Winston, G. Withenshaw, H. Wong, M. Wood, R. Worrall, Q. Xia, G. Xia, L. Xiang, G. Xiang, T. Xu, J.H. Yu, V. Zamkovska, M. Zerbini, V.K. Zotta, M. Zurita, L.E. di Grazia   +383 more
doaj   +1 more source

Self‐Organized Growth of Catalyst‐Free Single Crystal WnO3n‐2 (n = 25) Nanowire Bundles on Si (111) via Selective He+ Ion Irradiation

Advanced Materials Interfaces, Volume 12, Issue 10, May 19, 2025.
A novel and efficient method is explored to synthesize 1D single‐crystal sub‐stoichiometric WnO3n‐2 (n = 25) nanowire bundles. The approach utilizes selective low‐energy He+ ion irradiation (27 eV) on Mo‐Ni doped WOx surface, achieving efficient catalyst‐free self‐organized growth of high aspect ratio nanowires at the temperature of 700 °C.
Maryna Bilokur, Matt Thompson, Matthew Arnold, Cormac Corr   +3 more
wiley   +1 more source

Numerical Simulation of Internal Reconnection Event in Spherical Tokamak

, 1999
"Three dimensional magnetohydrodynamic simulations are executed in a full toroidal geomety to clarify the physical mechanisms of the Internal Reconnection Event (IRE), which is observed in the spherical tokamak experiments.
Mizuguchi, N., Sato, T., "Hayashi, T., The, Complexity Simulation Group"   +3 more
core  

A New Approach Toward Extreme Thermal Stability of Femtosecond Laser Induced Modifications in Glasses

Laser &Photonics Reviews, Volume 19, Issue 3, February 5, 2025.
Femtosecond laser irradiation inside Al2O3‐SiO2 and ZrO2‐Al2O3‐SiO2 glasses can induce polarization‐controlled birefringent nanostructures, along with local precipitation of refractory nanocrystals like tetragonal ZrO2 or mullite. These structures yield a persisting positive index contrast with extraordinary thermal stability (>1600 °C), opening a ...
Imane Ktafi, Jing Kong, Maxime Cavillon, Bertrand Poumellec, Maureen Yembele, Renaud Valois, Mathieu Allix, Gang‐Ding Peng, Matthieu Lancry   +8 more
wiley   +1 more source

Advanced tokamak reactors based on the spherical torus (ATR/ST). Preliminary design considerations [PDF]

, 1986
Preliminary design results relating to an advanced magnetic fusion reactor concept based on the high-beta, low-aspect-ratio, spherical-torus tokamak are summarized.
Miller, R. L., Seed, T. J., Copenhaver, C., Engelhardt, A. G., Bathke, C. G., Krakowski, R. A., Zubrin, R. M., Schnurr, N. M.   +7 more
core   +1 more source

Spectroscopic Measurement of Hydrogen Atom Density in a Plasma Produced with 28 GHz ECH in QUEST

Atoms, 2020
The spatial distribution of the hydrogen atom density was evaluated in a spherical tokamak (ST) plasma sustained only with 28 GHz electron cyclotron heating (ECH). The radially resolved Hδ emissivity was measured using multiple viewing chord spectroscopy
Satoru Mori, Taiichi Shikama, Kazuaki Hanada, Nao Yoneda, Arseniy Kuzmin, Masahiro Hasuo, Hiroshi Idei, Takumi Onchi, Akira Ejiri, Yuki Osawa, Yi Peng, Kyohei Matsuzaki, Shinichiro Kado, Keiji Sawada, Takeshi Ido, Kazuo Nakamura, Ryuya Ikezoe, Yoshihiko Nagashima, Makoto Hasegawa, Kengo Kuroda, Aki Higashijima, Takahiro Nagata, Shun Shimabukuro   +22 more
doaj   +1 more source

Ion‐Mediated Tearing and Kink Instabilities in the Earth's Magnetosphere: Hybrid‐Vlasov Simulations

Journal of Geophysical Research: Space Physics, Volume 130, Issue 1, January 2025.
Abstract We explore the three‐dimensional structure of ion‐kinetic instabilities in a thin current layer using a hybrid‐Vlasov simulation of the Earth's magnetosphere. The simulation shows the simultaneous growth of tearing and kinking instabilities, which develop in the Sun‐Earth and dawn‐dusk directions, respectively, within the magnetotail current ...
I. Zaitsev, G. Cozzani, M. Alho, K. Horaites, H. Zhou, A. Kit, Y. Pfau‐Kempf, S. Hoilijoki, U. Ganse, M. Battarbee, K. Papadakis, J. Suni, M. Dubart, F. Tesema‐Kebede, A. Workayehu, V. Tarvus, L. Kotipalo, V. Koikkalainen, L. Turc, M. Palmroth   +19 more
wiley   +1 more source