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Characterization of density fluctuations during the search for an I-mode regime on the DIII-D tokamak
Published 2017“…The I-mode regime, routinely observed on the Alcator C-Mod tokamak, is characterized by an edge energy transport barrier without an accompanying particle barrier and with broadband instabilities, known as weakly coherent modes (WCM), believed to regulate particle transport at the edge. …”
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Characterization of density fluctuations during the search for an I-mode regime on the DIII-D tokamak
Published 2017“…The I-mode regime, routinely observed on the Alcator C-Mod tokamak, is characterized by an edge energy transport barrier without an accompanying particle barrier and with broadband instabilities, known as weakly coherent modes (WCM), believed to regulate particle transport at the edge. …”
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Single-phase heat transfer regimes in forced flow conditions under exponential heat inputs
Published 2021“…We discuss the presence of three heat transfer regimes, i.e., transient conduction, transient turbulent diffusion, and quasi-steady turbulent heat transfer, and derive analytically the two associated transition criteria. …”
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Non-linear collisionless plasma wakes of small particles
Published 2011“…Strong heating of the ions occurs in the non-linear regime. Direct ion absorption by the particle is not important for the far wake unless the radius exceeds 101 De, and is therefore never signi cant (for the far wake) in the linear regime. …”
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Intergrain forces in low-Mach-number plasma wakes
Published 2012“…Except for relatively large grains in the nonlinear collisional regime, the grain-aligning force is very small for slow flow.…”
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Progress from ASDEX Upgrade experiments in preparing the physics basis of ITER operation and DEMO scenario development
Published 2023“…The quasi-coherent exhaust regime was developed into an integrated scenario at high heating power and energy confinement, with a detached divertor and without large ELMs. …”
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Quantitative comparison of electron temperature fluctuations to nonlinear gyrokinetic simulations in C-Mod Ohmic L-mode discharges
Published 2017“…Phys. 186, 545 (2003)] in two different confinement regimes: linear Ohmic confinement (LOC) regime and saturated Ohmic confinement (SOC) regime. …”
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On the oscillatory nature of heat transfer in steady annular flow
Published 2020“…While the heat flux applied at the wall is constant, the passage of the waves causes significant periodic oscillations of the local heat transfer coefficient and wall superheat in the forced convective evaporation regime, with amplitudes and periods much higher than the fluctuations due to turbulent eddies. …”
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Continuum-plasma solution surrounding nonemitting spherical bodies
Published 2010“…Our numerical computations show that for most combinations of physical parameters, there exists a closest asymptotic regime whose analytic solutions are accurate to 15% or better.…”
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Non-local heat transport in Alcator C-Mod ohmic L-mode plasmas
Published 2015“…In high collisionality saturated ohmic confinement (SOC) regime plasmas, the thermal transport becomes 'local': the central electron temperature drops on the energy confinement time scale in response to the edge cooling. …”
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Water and lysozyme: Some results from the bending and stretching vibrational modes
Published 2016“…We find that two characteristic temperatures are relevant: in the supercooled regime of confined water, the fragile-to-strong dynamic transition occurs at T[subscript L], and in the stable liquid phase, T* ≈ 315 ± 5 K characterizes the behavior of both isothermal compressibility K[subscript T] (T,P) and the coefficient of thermal expansion a[subscript P] (T,P).…”
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Time-optimal control with finite bandwidth
Published 2020“…While technical advances have achieved the ultrastrong driving regime in many physical systems, these capabilities have yet to be fully exploited for the precise control of quantum systems, as other limitations, such as the generation of higher harmonics or the finite response time of the control apparatus, prevent the implementation of theoretical time-optimal control. …”
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Forces on a small grain in the nonlinear plasma wake of another
Published 2011“…Rigorous particle-in-cell calculations of the force are performed in the nonlinear regime with two interacting grains. It is found that even for quite large grains, rp/lambdaDe=0.1, the force is dominated by the wake-potential gradient. …”
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Turbulence in Magnetized Pair Plasmas
Published 2020“…In the fluid (magnetohydrodynamic) range those equations are the same as for electron–ion plasmas, so turbulence at those scales is expected to be of the Alfvénic nature, exhibiting critical balance, dynamic alignment, and transition to a tearing-mediated regime at small scales. The critical scale at which a transition to a tearing-mediated range occurs is derived, and the spectral slope in that range is predicted to be k-⁸/³ (or k-³, depending on details of the reconnecting configuration assumed). …”
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Unexpected heat transfer oscillations in steady annular flow detected by synchronized infrared and liquid film sensor measurements
Published 2020“…Although the heat flux applied at the wall is constant in time, the passage of the waves causes significant periodic oscillations of the local heat transfer coefficient and wall superheat in the forced convective evaporation regime, which are reported in this study.…”
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Observation of Symmetry-Protected Selection Rules in Periodically Driven Quantum Systems
Published 2023“…Specifically, we exploit modulated quantum driving to reach the strong light-matter coupling regime and we introduce a protocol to experimentally extract the transition elements between Floquet states from the coherent evolution of the system. …”
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Spherical probes at ion saturation in E ∧ B fields
Published 2010“…Results are compared with prior two-dimensional calculations valid in the magneticfree regime (Hutchinson 2002 Plasma Phys. Control. Fusion 44 1953), and with recent semi-analytic solutions to the strongly magnetized transverse Mach probe problem (Patacchini and Hutchinson 2009 Phys. …”
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