Results 11 to 20 of about 404,814 (301)

Diagnosing the time-dependence of active region core heating from the emission measure: I. Low-frequency nanoflares [PDF]

, 2012
Observational measurements of active region emission measures contain clues to the time-dependence of the underlying heating mechanism. A strongly non-linear scaling of the emission measure with temperature indicates a large amount of hot plasma relative
Bradshaw, Bradshaw, Dahlburg, Guarrasi, Guennou, J. A. Klimchuk, J. W. Reep, Kashyap, Klimchuk, Landi, Longcope, Mandrini, Mulu-Moore, Patsourakos, Peres, Reale, S. J. Bradshaw, Schmelz, Tripathi, Viall, Warren, Warren, Winebarger, Winebarger   +23 more
core   +2 more sources

Drift waves in the corona: heating and acceleration of ions at frequencies far below the gyro frequency [PDF]

, 2010
In the solar corona, several mechanisms of the drift wave instability can make the mode growing up to amplitudes at which particle acceleration and stochastic heating by the drift wave take place. The stochastic heating, well known from laboratory plasma
Alfvén, Bailey, Baronia, Bellan, Chen, Ichimaru, J. Vranjes, Klimtchuk, McChesney, McChesney, Narain, Pekünlü, Piddington, S. Poedts, Sanders, Sheng, Suzuki, Terashima, Voitenko, Vranjes, Vranjes, Vranjes, Vranjes, Vranjes, Vranjes, Vranjes, Vranjes, Weiland, White   +28 more
core   +2 more sources

Influence of Plasma Heating on the Metallurgical Effects of a Continuous Casting Tundish

Metals, 2020
Steel products have experienced long-standing problems such as unstable product quality and low product homogeneity. In the continuous casting process, realizing constant-temperature pouring is an effective way to improve product homogeneity.
Maolin Ye, Mengjing Zhao, Sai Chen, Shufeng Yang, Jingshe Li   +4 more
doaj   +1 more source

Energy Conversion at Kinetic Scales in the Turbulent Magnetosheath

Frontiers in Astronomy and Space Sciences, 2019
The process of conversion or dissipation of energy in nearly collisionless turbulent space plasma, is yet to be fully understood. The existing models offer different energy dissipation mechanisms which are based on wave particle interactions or non ...
Zoltán Vörös, Zoltán Vörös, Emiliya Yordanova, Yuri V. Khotyaintsev, Ali Varsani, Yasuhito Narita   +5 more
doaj   +1 more source

Serum and plasma brain-derived neurotrophic factor concentration are elevated by systemic but not local passive heating.

PLoS ONE, 2021
Brain-derived neurotrophic factor (BDNF) plays a key role in neuronal adaptations. While previous studies suggest that whole-body heating can elevate circulating BDNF concentration, this is not known for local heating protocols.
Takahiro Ogawa, Sven P Hoekstra, Yoshi-Ichiro Kamijo, Victoria L Goosey-Tolfrey, Jeremy J Walsh, Fumihiro Tajima F, Christof A Leicht   +6 more
doaj   +3 more sources

Kinematic Collisionless Relaxation of Ions in Supercritical Shocks

Frontiers in Physics, 2019
We show that kinematic collisionless relaxation in the macroscopic electric and magnetic fields plays the main role in the formation of the downstream ion distributions in a super-critical shock with ion reflection present.
Michael Gedalin
doaj   +1 more source

Minority and mode conversion heating in (3He)-H JET plasma [PDF]

, 2012
Radio frequency (RF) heating experiments have recently been conducted in JET (He-3)-H plasmas. This type of plasmas will be used in ITER's non-activated operation phase.
Beaumont, P., Blackman, T., Brennan, D., Brett, A., Calabro, G., Cecconello, M., Coffey, I., Coyne, A., Crombe, K., Czarnecka, A., Felton, R., Frigione, D., Gatu Johnson, M., Giroud, C., Gorini, G., Hellesen, C., Hellsten, T, Jacquet, P., JET EFDA Contributors,, Johnson, T J, Kazakov, Yevgen, Kiptily, V., Knipe, S., Krasilnikov, A., Lennholm, M., Lerche, E, Lin, Y., Maslov, M., Mayoral, M.-L., Monakhov, I., Noble, C., Nocente, M., Ongena, J, Pangioni, L., Proverbio, I., Sozzi, C., Stamp, M., Studholme, W., Tardocchi, M., Van Eester, D, Vdovin, V., Versloot, T.W., Whitehurst, A., Wooldridge, E., Zoita, V.   +44 more
core   +1 more source

ICRF plasma production at hydrogen minority regime in LHD

Nuclear Fusion, 2023
This study aim is to develop further an ion cyclotron range of frequencies (ICRF) method of plasma production in stellarators based on the minority heating.
Yu.V. Kovtun, H. Kasahara, V.E. Moiseenko, S. Kamio, T. Seki, K. Saito, R. Seki, A. Dinklage, D. Hartmann, H. Laqua, T. Stange, S. Lazerson, A. Alonso, T. Wauters, Ye. Kazakov, J. Ongena, I.E. Garkusha   +16 more
doaj   +1 more source

Soft X-ray emission in kink-unstable coronal loops [PDF]

, 2014
Solar flares are associated with intense soft X-ray emission generated by the hot flaring plasma. Kink unstable twisted flux-ropes provide a source of magnetic energy which can be released impulsively and account for the flare plasma heating.
Brun, A. S., Pinto, R. F., Vilmer, N.
core   +5 more sources

Heating Effects of Supra-arcade Downflows on Plasma above Solar Flare Arcades

The Astrophysical Journal, 2023
We deliberately select three flares to investigate heating effects of supra-arcade downflows (SADs) on the surrounding fan plasma. Prior work found in one flare that the plasma around most SADs tends to heat up or stay the same temperature, accompanied ...
Xiaoyan Xie, Katharine K. Reeves
doaj   +1 more source