Effective mitigation of mode instability by deuterium loading in Yb-doped fiber oscillator

2019 ◽  
Author(s):  
Yisha Chen ◽  
Haozhen Xu ◽  
Yingbin Xin ◽  
Gui Chen ◽  
Ruiting Cao ◽  
...  
Keyword(s):  
Mode Instability

scholarly journals Suppression of neoclassical tearing mode instability at the initial stage by electron cyclotron current drive

AIP Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 035212
Author(s):  
Zhen Yang ◽  
Bin Wu ◽  
Yuanlai Xie ◽  
Yuqing Chen ◽  
Hongming Zhang ◽  
...  
Keyword(s):  
Electron Cyclotron ◽  
Current Drive ◽  
Tearing Mode ◽  
Mode Instability ◽  
Initial Stage ◽  
Neoclassical Tearing Mode

scholarly journals The r-mode instability windows of strange stars

2019 ◽  
Vol 19 (2) ◽  
pp. 030 ◽  
Author(s):  
Yu-Bin Wang ◽  
Xia Zhou ◽  
Na Wang ◽  
Xiong-Wei Liu
Keyword(s):  
Mode Instability ◽  
Strange Stars

scholarly journals Saturation of ther‐Mode Instability

2003 ◽  
Vol 591 (2) ◽  
pp. 1129-1151 ◽  
Author(s):  
Phil Arras ◽  
Eanna E. Flanagan ◽  
Sharon M. Morsink ◽  
A. Katrin Schenk ◽  
Saul A. Teukolsky ◽  
...  
Keyword(s):  
Mode Instability

Accurate and efficient modeling of the transverse mode instability in high-energy laser amplifiers using the phase-matched model

2021 ◽  
Author(s):  
Curtis R. Menyuk ◽  
Joshua T. Young ◽  
Jonathan Hu ◽  
Andrew J. Goers ◽  
David M. Brown ◽  
...  
Keyword(s):  
Transverse Mode ◽  
High Energy ◽  
Mode Instability ◽  
Laser Amplifiers ◽  
Energy Laser ◽  
High Energy Laser ◽  
Efficient Modeling

Effect of poloidal equilibrium flow and pressure gradient on the m/n = 2/1 tearing mode

2022 ◽  
Author(s):  
Yue Ming ◽  
Deng Zhou ◽  
Jinfang Wang
Keyword(s):  
Pressure Gradient ◽  
Stability Index ◽  
Plasma Pressure ◽  
Mode Number ◽  
Pressure Perturbation ◽  
Equilibrium Flow ◽  
Tearing Mode ◽  
Mode Instability ◽  
Mode Stability ◽  
Adverse Influence

Abstract The effect of equilibrium poloidal flow and pressure gradient on the m/n = 2/1 (m is the poloidal mode number and n is the toroidal mode number) tearing mode instability for tokamak plasmas is investigated. Based on the condition of ≠0 ( is plasma pressure), the radial part of motion equation is derived and approximately solved for large poloidal mode numbers (m). By solving partial differential equation (Whittaker equation) containing second order singularity, the tearing mode stability index Δ′ is obtained. It is shown that, the effect of equilibrium poloidal flow and pressure gradient has the adverse effect on the tearing mode instability when the pressure gradient is nonzero. The poloidal equilibrium flow with pressure perturbation partially reduces the stability of the classical tearing mode. But the larger pressure gradient in a certain poloidal flow velocity range can abate the adverse influence of equilibrium poloidal flow and pressure gradient. The numerical results do also indicate that the derivative of pressure gradient has a significant influence on the determination of instability region of the poloidal flow with pressure perturbation.

scholarly journals Steady-periodic method for modeling mode instability in fiber amplifiers

2013 ◽  
Vol 21 (3) ◽  
pp. 2606 ◽  
Author(s):  
Arlee V. Smith ◽  
Jesse J. Smith
Keyword(s):  
Fiber Amplifiers ◽  
Mode Instability ◽  
Periodic Method
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