Results 1 to 10 of about 89,033 (293)

Magnetic ionization-thermal instability [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
Linear analysis of the stability of diffuse clouds in the cold neutral medium with uniform magnetic field is performed. We consider that gas in equilibrium state is heated by cosmic rays, X-rays and electronic photoeffect on the surface of dust grains ...
Dudorov, Alexander E., Fomin, Sergey O., Khaibrakhmanov, Sergey A., Stepanov, Constantine E.   +3 more
core   +3 more sources

A Study of Dose Rate Probes for the País Vasco Environmental Radioactivity Automatic Network [PDF]

Sensors
There are many types of probes available on the market for measuring ambient dose equivalent rates (ADERs), which makes intercomparison exercises essential to ensure data comparability and reliability.
Natalia Alegría, Miguel Angel Hernández-Ceballos, Igor Peñalva, Andima Freire, Jose Miguel Muñoz   +4 more
doaj   +2 more sources

Dipole instability after an ultrashort XUV pulse in N2: population inversion and timescales [PDF]

Scientific Reports
We study the response of N2 to a range of XUV laser pulses using real-time time-dependent density functional theory on real-space grids in order to better understand and quantify the internal processes that lead to dipole instabilities.
Dale Hughes, Daniel Dundas, Phuong Mai Dinh, Paul-Gerhard Reinhard, Eric Suraud   +4 more
doaj   +2 more sources

Causal links to persisting daytime equatorial plasma bubbles over Asia-Pacific region following the geomagnetic storm on 01 December 2023 [PDF]

Scientific Reports
A strong geomagnetic storm that occurred on 01-December-2023 triggered unusual equatorial plasma bubbles (EPB) over 100-140°E longitudes, which persisted for several hours after sunrise on the next day.
P. K. Rajesh, C. H. Charles Lin, Y. Otsuka, M. Yamamoto, S. P. Chen, C. Y. Lin, T. Matsuo, M. Nishioka, S. Perwitasari, H. Jin, J. M. Choi   +10 more
doaj   +2 more sources

On the onset of breathing mode in Hall thrusters and the role of electron mobility fluctuations

Frontiers in Physics, 2022
Breathing mode is an ionization instability which is observed ubiquitously in the operation of Hall thrusters. It is recognized as a relatively low frequency (10–30 kHz) longitudinal oscillation of the discharge current and the plasma parameters ...
L. Leporini , V. Giannetti , V. Giannetti , M. M. Saravia , F. Califano , S. Camarri, T. Andreussi , T. Andreussi    +7 more
doaj   +1 more source

An unstable 0D model of ionization oscillations in Hall thruster plasmas

Frontiers in Physics, 2023
The breathing mode is an instability typical of Hall thrusters, which is characterized by oscillations of the discharge current with amplitude of the order of its mean value and frequency in the 5–30 kHz range.
L. Leporini, V. Giannetti, S. Camarri, T. Andreussi   +3 more
doaj   +1 more source

Redistribution of Energy during Interaction of a Shock Wave with a Temperature Layered Plasma Region at Hypersonic Speeds

Aerospace, 2021
The paper is devoted to the problem of the interaction between a shock wave and a thermally stratified energy source for the purpose of supersonic/hypersonic flow control realization.
O. A. Azarova, T. A. Lapushkina, K. V. Krasnobaev, O. V. Kravchenko   +3 more
doaj   +1 more source

Investigation of the wakefield generation in the interaction of the intense laser pulse with gas [PDF]

مجله علوم و فنون هسته‌ای, 2021
In the present work, the formation of the wakefield during the interaction of intense laser pulse with a gas medium has been investigated by using PIC simulation code, including the ionization process.
E. Khalilzadeh, M.J. Jafari, Z. Dehghany
doaj   +1 more source

Rayleigh–Taylor instability in an ionized medium [PDF]

Astrophysics and Space Science, 2013
Accepted for publication in Astrophysics and Space ...
Shadmehri, Mohsen, Yaghoobi, Asiyeh, Khajavi, Mahdi   +2 more
openaire   +2 more sources

Internal Surface Plasmon Excitation as the Root Cause of Laser-Induced Periodic Plasma Structure and Self-Organized Nanograting Formation in the Volume of Transparent Dielectric

Nanomaterials, 2020
A computer simulation of the dynamics of an optical discharge produced in the volume of a transparent dielectric (fused silica) by a focused femtosecond laser pulse was carried out taking into account the possibility of developing small-scale ionization ...
Vladimir B. Gildenburg, Ivan A. Pavlichenko   +1 more
doaj   +1 more source