Results 11 to 20 of about 1,124,073 (259)

SOLPS-ITER validation with TCV L-mode discharges

Physics of Plasmas, 2021
This work presents a quantitative test of SOLPS-ITER simulations against tokamak à configuration variable (TCV) L-mode experiments. These simulations account for drifts, currents, kinetic neutrals, and carbon impurities providing the most complete edge transport simulations for TCV to date.
Wensing, M., Reimerdes, H., Février, O., Colandrea, C., Martinelli, L., Verhaegh, K., Bagnato, F., Blanchard, P., Vincent, B., Perek, A., Gorno, S., de Oliveira, H., Theiler, C., Duval, B.P., Tsui, C.K., Baquero-Ruiz, M., Wischmeier, M., TCV team,, Team, MST1   +18 more
openaire   +1 more source

Differential impact of multi-focus fan beam collimation with L-mode and conventional systems on the accuracy of myocardial perfusion imaging: Quantitative evaluation using phantoms [PDF]

Asia Oceania Journal of Nuclear Medicine and Biology, 2013
Introduction: A novel IQ-SPECTTM method has become widely used in clinical studies. The present study compares the quality of myocardial perfusion images (MPI) acquired using the IQ-SPECTTM (IQ-mode),conventional (180° apart: C-mode) and L-mode (90 ...
Tatsunori Saho, Yoshiharu Kangai, Norikazu Matsutomo, Hideo Onishi, Hizuru Amijima   +4 more
doaj   +2 more sources

Excitation and Propagation of Longitudinal L (0, 2) Mode Ultrasonic Guided Waves for the Detection of Damages in Hexagonal Pipes: Numerical and Experimental Studies

Shock and Vibration, 2021
The hexagonal pipe is a special kind of tube structure. Its inner surface of the cross section is in the shape of circle, while the outer surface is hexagonal.
Xiang Wan, Meiru Liu, Xuhui Zhang, Hongwei Fan, Qinghua Mao, Ming Dong, Xing Wang, Hongwei Ma   +7 more
doaj   +1 more source

High-confinement radiative L-modes in ASDEX Upgrade

Nuclear Fusion, 2021
Abstract Experiments have been performed in the ASDEX Upgrade tokamak where plasmas are kept just below the H-mode threshold using feedback on the radiated power via seeded impurity. The resulting high-power L-modes show high confinement properties and no ELM activity due to the reduced pedestal height.
E. Fable, A. Kallenbach, R.M. McDermott, M. Bernert, C. Angioni, null the ASDEX Upgrade Team   +5 more
openaire   +2 more sources

Theory of pseudoclassical confinement and transition to L mode

Physics of Fluids B: Plasma Physics, 1993
A theory of the self-sustained turbulence is developed for resistive plasma in toroidal devices. Pseudoclassical confinement is obtained in the low-temperature limit. As temperature increases, the current diffusivity prevails upon resistivity, and the turbulence nature changes so as to recover the L-mode transport.
K. Itoh, S.-I. Itoh, M. Yagi, A. Fukuyama, M. Azumi   +4 more
openaire   +1 more source

On the non-stiffness of edge transport in L-modes

, 2013
It is shown that contrary to the plasma core, the edge region between rho_V=0.8 and 1 is not stiff. This non-stiffness is crucial for global confinement understanding. It is also shown that it can explain the strong confinement improvement with negative triangularity observed in TCV.
Sauter, Olivier, Kim, Doohyun, Behn, Roland, Coda, Stefano, Duval, B. P., Goodman, T. P.   +5 more
openaire   +4 more sources

Perturbative momentum transport in MAST L-mode plasmas

Nuclear Fusion, 2017
Non-axisymmetric magnetic fields are used to perturbatively probe momentum transport physics in MAST L-mode plasmas. The low beta L-mode target was chosen to complement previous experiments conducted in high beta NSTX H-mode plasmas (β N = 3.5-4.6) where an inward momentum pinch was measured.
Guttenfelder, W., Field, A.R., Lupelli, I., Tala, Tuomas, Kaye, S.M., Ren, Y., Solomon, W.M.   +6 more
openaire   +4 more sources

Control of low-frequency guided elastic wave modes in a hollow pipe using a meta-surface

AIP Advances, 2022
A locally resonant meta-surface for preferential excitation of a guided mode in a hollow pipe can improve ultrasonic guided wave inspection of pipelines.
Lalith Sai Srinivas Pillarisetti, Cliff J. Lissenden, Parisa Shokouhi   +2 more
doaj   +1 more source

Utilizing Spontaneous Ventilation Modes in Patients Underwent Corrective Surgery for Right Ventricular Outflow Tract Obstructive Congenital Heart Disease: A Crossover Study

Reviews in Cardiovascular Medicine, 2023
Background: This study aimed to determine whether the hemodynamics of patients with right ventricle outflow tract obstructive congenital heart disease (RVOTO-CHD) improve after corrective surgery by changing the ventilation mode.
Xiaolei Gong, Limin Zhu, Mingjie Zhang, Yujie Liu, Chunxiang Li, Zhuoming Xu, Jinghao Zheng   +6 more
doaj   +1 more source

On the non-stiffness of edge transport in L-mode tokamak plasmas

Physics of Plasmas, 2014
Transport analyses using first-principle turbulence codes and 112-D transport codes usually study radial transport properties between the tokamak plasma magnetic axis and a normalized minor radius around 0.8. In this region, heat transport shows significantly stiff properties resulting in temperature scalelength values (R∕LT) that are relatively ...
Sauter O., Brunner S., Kim D., Merlo G., Behn R., Camenen Y., Coda S., Duval B. P., Federspiel L., Goodman T. P., Karpushov A., Merle A., Team TCV   +12 more
openaire   +1 more source