Results 1 to 10 of about 141,584 (298)

Modelling the capacitance of the elongated plasma in tokamak [PDF]

Scientific Reports, 2023
The capacitance model suitable for the non-circular cross-section plasma is studied based on the capacitance model of the circular cross-section plasma.
Pengcheng Miao, Ge Li, Song Zhang, Zhiyuan Weng, Yu Wu, Zemin Duan   +5 more
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Initial analytical theory of plasma disruption and experimental evidence [PDF]

Scientific Reports, 2023
It is a great physical challenge to achieve controlled nuclear fusion in magnetic confinement tokamak and solve energy shortage problem for decades. In tokamak plasma, large-scale plasma instability called disruption will halt power production of reactor
Huibin Qiu, Zuozhi Hu, Shengfa Wu, Jiangcun Chen, Chengjie Zhong, Junjie Wu, Xiaobin Li, Donghua Xiao, Chunhui Shi, Junhui Liu, Wenjun Xiong, Tianyi Hu, Qilong Cai, Youlong Yuan   +13 more
doaj   +2 more sources

ST40 electromagnetic predictive studies supported by machine learning applied to experimental database [PDF]

Scientific Reports
Nuclear fusion is entering the era of power plant-scale devices, which are now undergoing extensive studies to support the design phase. Plasma disruptions pose a high risk to these classes of devices because of the large stored thermal and magnetic ...
M. Scarpari, S. Minucci, G. Sias, R. Lombroni, P. F. Buxton, M. Romanelli, G. Calabrò   +6 more
doaj   +2 more sources

Tailoring tokamak error fields to control plasma instabilities and transport [PDF]

Nature Communications
A tokamak relies on the axisymmetric magnetic fields to confine fusion plasmas and aims to deliver sustainable and clean energy. However, misalignments arise inevitably in the tokamak construction, leading to small asymmetries in the magnetic field known
SeongMoo Yang, Jong-Kyu Park, YoungMu Jeon, Nikolas C. Logan, Jaehyun Lee, Qiming Hu, JongHa Lee, SangKyeun Kim, Jaewook Kim, Hyungho Lee, Yong-Su Na, Taik Soo Hahm, Gyungjin Choi, Joseph A. Snipes, Gunyoung Park, Won-Ha Ko   +15 more
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Numerical Solutions to the Grad–Shafranov Equation for Studying Plasma Equilibrium of Alvand Tokamak [PDF]

فیزیک کاربردی ایران, 2023
Alvand tokamak is a small-sized research tokamak for magnetically confined plasma studies. The plasma cross-section of this tokamak is circular, and its simpler structure compared to tokamaks with an elongated cross-section allows for more fundamental ...
Chapar Rasouli, Banafsheh Pourshahab
doaj   +1 more source

The progress and current status of Tokamak: a systematic review [PDF]

E3S Web of Conferences, 2021
Nuclear fusion energy is an ideal energy source for the future due to the clean and efficient features, first proposed by Russian scientists in the 1950s.
Song Yuxuan
doaj   +1 more source

Pulsed Spherical Tokamak—A New Approach to Fusion Reactors

Plasma, 2022
Traditionally, spherical tokamak (ST) reactors are considered to operate in a steady state. This paper analyses the advantages of a pulsed ST reactor.
Mikhail Gryaznevich, Valery A. Chuyanov, Yuichi Takase   +2 more
doaj   +1 more source

Spectroscopic evaluation of vibrational temperature and electron density in reduced pressure radio frequency nitrogen plasma

SN Applied Sciences, 2021
The optical emission spectroscopy technique is used to determine the vibrational temperature of the second positive band system, $$ N_{2} (C,\upsilon^{^{\prime}} - B,\upsilon^{^{\prime\prime}}$$ N 2 ( C , υ ′ - B , υ ″ ) in the wavelength range 367.1–380.
Hira Fatima, M. Usman Ullah, S. Ahmad, Mubashair Imran, S. Sajjad, S.Hussain, A. Qayyum   +6 more
doaj   +1 more source

Achievement of ion temperatures in excess of 100 million degrees Kelvin in the compact high-field spherical tokamak ST40

Nuclear Fusion, 2023
Ion temperatures of over 100 million degrees Kelvin (8.6 keV) have been produced in the ST40 compact high-field spherical tokamak (ST). Ion temperatures in excess of 5 keV have not previously been reached in any ST and have only been obtained in much ...
S.A.M. McNamara, O. Asunta, J. Bland, P.F. Buxton, C. Colgan, A. Dnestrovskii, M. Gemmell, M. Gryaznevich, D. Hoffman, F. Janky, J.B. Lister, H.F. Lowe, R.S. Mirfayzi, G. Naylor, V. Nemytov, J. Njau, T. Pyragius, A. Rengle, M. Romanelli, C. Romero, M. Sertoli, V. Shevchenko, J. Sinha, A. Sladkomedova, S. Sridhar, Y. Takase, P. Thomas, J. Varje, B. Vincent, H.V. Willett, J. Wood, D. Zakhar, D.J. Battaglia, S.M. Kaye, L.F. Delgado-Aparicio, R. Maingi, D. Mueller, M. Podesta, E. Delabie, B. Lomanowski, O. Marchuk, the ST40 Team   +41 more
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Interplay between beam-driven chirping modes and plasma confinement transitions in spherical tokamak ST40

Nuclear Fusion, 2022
Experiments on the high field spherical tokamak ST40 have led to the recent observation of interplay between beam-driven modes of sweeping frequency (chirping modes) and transitions to the enhanced global confinement regime (H-mode) and back to the low ...
J. Bland, J. Varje, N.N. Gorelenkov, M.P. Gryaznevich, S.E. Sharapov, J. Wood, Team The ST40   +6 more
doaj   +1 more source