Results 1 to 10 of about 52,940 (69)

Multi-critical points in black hole phase transitions

Journal of High Energy Physics, 2022
We present the first examples in black hole thermodynamics of multicritical phase transitions, in which more than three distinct black hole phases merge at a critical point.
Masoumeh Tavakoli, Jerry Wu, Robert B. Mann   +2 more
doaj   +1 more source

A quasi-isodynamic configuration with good confinement of fast ions at low plasma β

Nuclear Fusion, 2023
A new quasi-isodynamic (QI) stellarator configuration optimized for the confinement of energetic ions at low plasma β is obtained. The numerical optimization is carried out using the STELLOPT suite of codes.
E. Sánchez, J.L. Velasco, I. Calvo, S. Mulas   +3 more
doaj   +1 more source

Particle pump-out induced by trapped electron mode turbulence in electron cyclotron heated plasmas on XuanLong-50 spherical torus

Nuclear Fusion, 2023
Particle pump-out effects induced by low-frequency (
Mingyuan Wang, Jia Li, Yukun Bai, Jiaqi Dong, Yuejiang Shi, Xiaolan Zou, Adi Liu, Ge Zhuang, Hongyue Li, Songjian Li, Shaodong Song, Tiantian Sun, Bing Liu, Xianming Song, Minsheng Liu, Baoshan Yuan, Y.-K. Martin Peng, ENN Team   +17 more
doaj   +1 more source

A reduced-turbulence regime in the Large Helical Device upon injection of low-Z materials powders

Nuclear Fusion, 2023
Recently an improved confinement regime, characterized by reduced turbulent fluctuations has been observed in the Large Helical Device upon the injection of boron powder into the plasma (Nespoli et al 2022 Nat. Phys. 18 350–56).
F. Nespoli, K. Tanaka, S. Masuzaki, N. Ashikawa, M. Shoji, E.P. Gilson, R. Lunsford, T. Oishi, K. Ida, M. Yoshinuma, Y. Takemura, T. Kinoshita, G. Motojima, M. Osakabe, N. Kenmochi, G. Kawamura, C. Suzuki, A. Nagy, A. Bortolon, N.A. Pablant, A. Mollen, N. Tamura, D.A. Gates, T. Morisaki   +23 more
doaj   +1 more source

Modeling of aluminum erosion by neutral particles in dedicated EAST experiments using the 3D-GAPS code

Nuclear Fusion, 2023
To evaluate the erosion effects of charge exchange (CX) neutrals on first wall materials, aluminum (Al) coated samples installed in a cylindrical sleeve were exposed to EAST plasmas with the Material and Plasma Evaluation System (MAPES). The 3D-GAPS code
X.Z. Shi, R. Ding, D. Matveev, L. Mu, N.X. Liu, H. Xie, G.L. Xu, J.L. Chen   +7 more
doaj   +1 more source

Ammonia production in a dual crossed atom beam experiment

Nuclear Fusion, 2023
Production of ammonia by surface reactions of H and N atoms on surfaces not wetted by partially ionized plasma may represent an important technological issue in fusion reactors where puffing nitrogen is employed to cool plasma in the divertor region. The
R. Zaplotnik, A. Drenik, A. Vesel, M. Mozetič   +3 more
doaj   +1 more source

MHD stability of negative triangularity DIII-D plasmas

Nuclear Fusion, 2023
Negative triangularity (NT) experiments in DIII-D point to an emergent reactor scenario free of sawteeth, endowed with benign, nondisruptive n = 2 tearing modes, which experience q _min $ \geqslant $ 1 similar to the positive triangularity hybrid ...
W. Boyes, F. Turco, J. Hanson, A. Marinoni, A. Turnbull, M. Austin, G. Navratil   +6 more
doaj   +1 more source

Exploring twist-4 chiral-even GPDs in the light-front quark-diquark model

Nuclear Physics B
In this work, we delve into the realm of quantum chromodynamics (QCD) by calculating twist-4 chiral-even generalized parton distributions (GPDs), within the context of the light-front quark-diquark model (LFQDM), focusing specifically on the intriguing ...
Shubham Sharma, Harleen Dahiya
doaj   +1 more source

Anomalous dimensions of twist-two operators in extended N=2 and N=4 super Yang-Mills theories

Nuclear Physics B
We perform direct diagrammatic calculations of the anomalous dimensions of twist-two operators in extended N=2 and N=4 super Yang-Mills theories (SYM).
B.A. Kniehl, V.N. Velizhanin
doaj   +1 more source

Wilson networks in AdS and global conformal blocks

Nuclear Physics B
We develop the relation between gravitational Wilson line networks, defined as a particular product of Wilson line operators averaged over the cap states, and conformal correlators in the context of the AdS2/CFT1 correspondence.
Konstantin Alkalaev, Andrey Kanoda, Vladimir Khiteev   +2 more
doaj   +1 more source