نتایج جستجو برای: plasma oscillation

تعداد نتایج: 392200  

2008
Zheng Xiaoping Defu Li

We study the effect of unlinearized medium on the collective excitations in quarkgluon plasma. We present two kinds of non-Abelian oscillation solutions which respectively correspond to weakly and strongly nonlinear coupling of field components in color space. We also show that the weakly nonlinear solution is similar to Abelianlike one but has the frequency shift, which is of order gT , from e...

2004
S. Park W. Choe

Experimental and theoretical studies were conducted to simultaneously study the role of particle size and gas pressure on nonlinear behavior of dust oscillations in a plasma. Oscillation spectra were experimentally obtained by using four different sized (1.5, 2, 3, and 4 mm) particles at 250 mTorr, which is high pressure compared to previously reported works. The measured results were in good a...

2003
Motoi Uchino Norio Sakai Kaori Kashiwagi Yasuhito Shirai Yoshiaki Shinohara Kenzo Hirose Masamitsu Iino Takehira Yamamura Naoaki Saito

Running title: PKC subtype-specific control of Ca 2+ oscillation receptor Total number of characters: 33,831-2-SUMMARY Prolonged activation of a metabotropic glutamate receptor, mGluR5a, causes synchronized oscillations in intracellular calcium, inositol 1,4,5-trisphosphate (IP 3) production, and protein kinase C (PKC) activation. Additionally, mGluR5 stimulation elicited cyclical translocation...

2009
Ken Dozier David Chang

Supply chain oscillations satisfy a sound wave-like dispersion relation when a company responds only to the status of the companies immediately above and below it in the chain. However, when information exchange makes it possible for the company to respond to the status of all the companies in the chain, the dispersion relation changes from that of a sound wave to that of a plasma oscillation. ...

2001
R. P. Drake R. S. Marjoribanks

The oscillation of electrons, in a sufficiently intense pump wave, frustrates Debye shielding in the direction of the oscillation. One finds that such oscillating electrons cannot shield charge fluctuations over distances smaller than the distance they sample in a plasma period. One consequence is that the frequency of ion waves can be increased from the ion acoustic frequency to the ion plasma...

Journal: :Physical review letters 2002
Z Donkó G J Kalman K I Golden

Strongly coupled Coulomb systems are characterized by localization ("caging") of particles trapped and oscillating in slowly fluctuating local potential wells. This observation constitutes the basic assumption underlying the quasilocalized charge approximation. Using molecular dynamics simulation we study the changes in the particles' surroundings (cages) in a classical three-dimensional one-co...

Journal: :Physical review letters 2010
Supradeep Narayana Yuki Sato

We report a direct observation of dynamical bifurcation between two plasma oscillation states of a superfluid Josephson junction. We excite the superfluid plasma resonance into a nonlinear regime by driving below the natural plasma frequency and observe a clear transition between two dynamical states. We also demonstrate bifurcation by changing the potential well with temperature variations.

2014
Zsolt Pónya Ilaria Corsi Richárd Hoffmann Melinda Kovács Anikó Dobosy Attila Zoltán Kovács Mauro Cresti Beáta Barnabás

During in vitro fertilization of wheat (Triticum aestivum, L.) in egg cells isolated at various developmental stages, changes in cytosolic free calcium ([Ca2+]cyt) were observed. The dynamics of [Ca2+]cyt elevation varied, reflecting the difference in the developmental stage of the eggs used. [Ca2+]cyt oscillation was exclusively observed in fertile, mature egg cells fused with the sperm cell. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1385

در این پایان نامه رفتار تابع توزیع ذرات پلاسما در داخل توکامک را بررسی میکنیم. برای به دست آوردن تابع توزیع ذرات پلاسما باید معادله ولاسوف را همراه با معادله پواسون به طور همزمان حل کنیم. روش استفاده شده برای حل معادله ی ولاسوف روش تبدیلات فوریه است. دلیل استفاده از تبدیل فوریه ی سرعت این است که حل معادله ولاسوف در فضای فاز نوسانی میشود و نمیتوان آن را در یک شبکه عددی نشان داد. همچنین با استفاد...

Journal: :Journal of Physics D 2022

Abstract Two different plasma actuation strategies for producing near-wall flow oscillations, namely the burst-modulation and beat-frequency mode, are characterized with planar particle image velocimetry in quiescent air. Both concepts anticipated to work as non-mechanical surrogates of oscillating walls aimed at turbulent drag reduction, added benefit no moving parts, fluid is purely manipulat...

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