scholarly journals An Experimental Evidence of Gasoline Ionization by a Magnetic Field

2018 ◽  
Author(s):  
Raul Guerrero Torres ◽  
Mehrab Mehrvar
Keyword(s):  
Magnetic Field ◽  
Experimental Evidence

The Tearing Mode Instability in a Partially Ionized Plasma

1979 ◽  
Vol 3 (6) ◽  
pp. 367-368 ◽  
Author(s):  
N. F. Cramer ◽  
I. J. Donnelly
Keyword(s):  
Magnetic Field ◽  
Star Formation ◽  
Solar Flare ◽  
Experimental Evidence ◽  
Energy Release ◽  
Release Mechanism ◽  
Tearing Mode ◽  
Mode Instability ◽  
Laboratory Plasma ◽  
Tearing Instability

The resistive tearing mode instability is a mechanism that in some cases will render unstable a magnetohydrodynamic equilibrium of a plasma that is ideally stable, i.e. stable if no dissipative oiesses are taken into account. There is much experimental evidence that this instability is the cause of the current disruptions observed in laboratory plasma devices (von Goeler et al. 1974). In the astrophysical context, the instability has been invoked in connection with the solar flare energy release mechanism (Coppi and Friedland 1971) and the problem of the disconnection of the protostar matter from the interstellar magnetic field during star formation (Mestel 1966). In the latter problem the tearing instability gives rise to a much smaller timescale for magnetic reconnection than does ordinary resistive diffusion.

scholarly journals Region-1 field aligned currents in experiments on laser-produced plasma interacting with magnetic dipole

2010 ◽  
Vol 6 (S274) ◽  
pp. 40-43
Author(s):  
I. F. Shaikhislamov ◽  
Yu. P. Zakharov ◽  
V. G. Posukh ◽  
E. L. Boyarintsev ◽  
A. V. Melekhov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Boundary Layer ◽  
Solar Wind ◽  
Experimental Evidence ◽  
Magnetic Dipole ◽  
Present Report ◽  
Low Latitude ◽  
The Earth ◽  
Field Aligned Current ◽  
Low Latitude Boundary Layer

AbstractIn previous experiments by the authors a generation of intense field aligned current (FAC) system on Terrella poles was observed. In the present report a question of these currents origin in a low latitude boundary layer of magnetosphere is investigated. Experimental evidence of such a link was obtained by measurements of magnetic field generated by tangential sheared drag. Results suggest that compressional and Alfven waves are responsible for FAC generation. The study is most relevant to FAC generation in the Earth and Hermean magnetospheres following pressure jumps in Solar Wind.

scholarly journals Clear evidence against superconductivity in hydrides under high pressure

2021 ◽  
Author(s):  
Jorge Hirsch ◽  
Frank Marsiglio
Keyword(s):  
Magnetic Field ◽  
High Pressure ◽  
High Temperature ◽  
Magnetic Fields ◽  
Experimental Evidence ◽  
High Temperature Superconductors ◽  
Meissner Effect ◽  
Experimental Results ◽  
Definitive Evidence

Abstract The Meissner effect, magnetic field expulsion, is a hallmark of superconductivity. Associated with it, superconductors exclude applied magnetic fields. Recently Minkov et al. presented experimental results reportedly showing ``definitive evidence of the Meissner effect'' in sulfur hydride and lanthanum hydride under high pressure [1]. Instead, we show here that the evidence presented in that paper does not support the case for superconductivity in these materials. Together with experimental evidence discussed in earlier papers, we argue that this clearly indicates that hydrides under pressure are not high temperature superconductors.

Experimental observation of hot tail runaway electron generation in TEXTOR disruptions

2015 ◽  
Vol 81 (4) ◽  
Author(s):  
L. Zeng ◽  
H. R. Koslowski ◽  
Y. Liang ◽  
A. Lvovskiy ◽  
M. Lehnen ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Experimental Evidence ◽  
Electron Density ◽  
Experimental Observation ◽  
Runaway Electron ◽  
Toroidal Magnetic Field ◽  
Electron Generation ◽  
Higher Temperature ◽  
Density Threshold

Experimental evidence supporting the theory of hot tail runaway electron (RE) generation has been identified in TEXTOR disruptions. With higher temperature, more REs are generated during the thermal quench. Increasing the RE generation by increasing the temperature, an obvious RE plateau is observed even with low toroidal magnetic field (1.7 T). These results explain the previously found electron density threshold for RE generation.

scholarly journals Experimental Evidence of a Zonal Magnetic Field in a Toroidal Plasma

2007 ◽  
Vol 98 (16) ◽  
Author(s):  
A. Fujisawa ◽  
K. Itoh ◽  
A. Shimizu ◽  
H. Nakano ◽  
S. Ohshima ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Experimental Evidence ◽  
Toroidal Plasma

scholarly journals Behavioral evidence for geomagnetic imprinting and transgenerational inheritance in fruit flies

2019 ◽  
Vol 117 (2) ◽  
pp. 1216-1222
Author(s):  
In-Taek Oh ◽  
Hye-Jin Kwon ◽  
Soo-Chan Kim ◽  
Hyung-Jun Kim ◽  
Kenneth J. Lohmann ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Experimental Evidence ◽  
Critical Period ◽  
Magnetic Field Gradient ◽  
Model Organism ◽  
Fruit Fly ◽  
Long Distance ◽  
Female Progeny ◽  
Behavioral Evidence ◽  
The Magnetic Field

Certain long-distance migratory animals, such as salmon and sea turtles, are thought to imprint on the magnetic field of their natal area and to use this information to help them return as adults. Despite a growing body of indirect support for such imprinting, direct experimental evidence thereof remains elusive. Here, using the fruit fly as a magnetoreceptive model organism, we demonstrate that exposure to a specific geographic magnetic field during a critical period of early development affected responses to a matching magnetic field gradient later in life. Specifically, hungry flies that had imprinted on a specific magnetic field from 1 of 3 widely separated geographic locations responded to the imprinted field, but not other magnetic fields, by moving downward, a geotactic behavior associated with foraging. This same behavior occurred spontaneously in the progeny of the next generation: female progeny moved downward in response to the field on which their parents had imprinted, whereas male progeny did so only in the presence of these females. These results represent experimental evidence that organisms can learn and remember a magnetic field to which they were exposed during a critical period of development. Although the function of the behavior is not known, one possibility is that imprinting on the magnetic field of a natal area assists flies and their offspring in recognizing locations likely to be favorable for foraging and reproduction.

Experimental Evidence for Magnetic Field Effects on Dielectronic Recombination via High Rydberg States

1999 ◽  
Vol 82 (19) ◽  
pp. 3779-3782 ◽  
Author(s):  
T. Bartsch ◽  
S. Schippers ◽  
A. Müller ◽  
C. Brandau ◽  
G. Gwinner ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Experimental Evidence ◽  
Rydberg States ◽  
Dielectronic Recombination ◽  
Magnetic Field Effects ◽  
Field Effects

Experimental evidence of the Phobos magnetic field

JETP Letters ◽  
2001 ◽  
Vol 74 (6) ◽  
pp. 293-297 ◽  
Author(s):  
V. G. Mordovskaya ◽  
V. N. Oraevsky ◽  
V. A. Styashkin ◽  
J. Rustenbach
Keyword(s):  
Magnetic Field ◽  
Experimental Evidence
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