Ion-acoustic turbulence and anomalous transport

Bychenkov, V. Yu.; Silin, V. P.; Uryupin, S. A.

doi:10.1016/0370-1573(90)90122-i

Cited by 101 publications

(92 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is termed the beamcharge density bunching, which is valid only for a weak beam. There are other cases of plasma-sound wave excitation such as cross field current-driven ion sound wave instability 10 and hot electron/ion streams-driven ion sound wave instabilities in dusty plasma under the Vlasov plasma model approach. 6 In the Vlasov model, the basic process of a driving mechanism is governed by the wave-particle interactions under drifted Maxwellian velocity distributions, as already discussed in a basic textbook.…”

Section: ͑3͒mentioning

confidence: 99%

Response to “Comment on ‘Graphical analysis of electron inertia induced acoustic instability' ” [Phys. Plasmas 13, 104701 (2006)]

2006

View full text Add to dashboard Cite

Section: ͑3͒mentioning

confidence: 99%

Response to “Comment on ‘Graphical analysis of electron inertia induced acoustic instability' ” [Phys. Plasmas 13, 104701 (2006)]

2006

View full text Add to dashboard Cite

“…Since the CDIA and CGDW have been extensive studied in literatures [18][19][20][21], we provide a brief and heuristic discussion of the linear and nonlinear features of the CDIA and the CGDW modes, and focus on the evolution of the CS under the physics consequence of the joint interactions of these two modes.…”

Section: Linear Dynamics Of Cdia and Cgdwmentioning

confidence: 99%

“…We choose this profile for simplicity and a more realistic CS configuration can be chosen, but it is expected that the qualitative conclusion will not change. CDIA is well studied in literatures [17,21,24], so we directly write its dispersion relation as follows…”

Section: Linear Instability Of Cdiamentioning

confidence: 99%

“…Neglecting the effect of a mean electric field, which is small in the precursor of fast reconnection, v c is just the ion acoustic speed. Though a mean electric field may slightly shift the value of the threshold velocity [21], the structures of the dispersion relations, Equations (5) and (6), will not change. In the Appendix, we present a derivation of γ CDIA k in the existence of a weak mean electric field, and show that only is the threshold velocity slightly shifted.…”

Section: Linear Instability Of Cdiamentioning

confidence: 99%

“…In the Appendix, we present a derivation of γ CDIA k in the existence of a weak mean electric field, and show that only is the threshold velocity slightly shifted. As an illustration, we use the results of Bychenkov et al [21]:…”

Section: Linear Instability Of Cdiamentioning

confidence: 99%

See 2 more Smart Citations

Onset of fast magnetic reconnection via subcritical bifurcation

Guo

Wang

2015

Front. Phys.

View full text Add to dashboard Cite

Citation:Guo Z and Wang X (2015) Onset of fast magnetic reconnection via subcritical bifurcation. Front. Phys. 3:18. doi: 10.3389/fphy.2015.00018 Onset of fast magnetic reconnection via subcritical bifurcation We report a phase transition model for the onset of fast magnetic reconnection. By investigating the joint dynamics of streaming instability (i.e., current driven ion acoustic in this paper) and current gradient driven whistler wave prior to the onset of fast reconnection, we show that the nonlinear evolution of current sheet (CS) can be described by a Landau-Ginzburg equation. The phase transition from slow reconnection to fast reconnection occurs at a critical thickness, c ≃ √ 2 v the d e , where v the is π v c electron thermal velocity and v c is the velocity threshold of the st ream ing instability. For current driven ion acoustic, c is ≤ 10d e . If the thickness of the C S is narrower than c , the CS subcritically bifurcates into a rough state, which facilitates breakage of the CS, and consequently initiates fast reconnection.

show abstract

Artificial ionospheric layers driven by high‐frequency radiowaves: An assessment

et al. 2016

View full text Add to dashboard Cite

High‐power ordinary mode radio waves produce artificial ionization in the F region ionosphere at the European Incoherent Scatter (Tromsø, Norway) and High Frequency Active Auroral Research Program (Gakona, Alaska, USA) facilities. We have summarized the features of the excited plasma turbulence and descending layers of freshly ionized (“artificial”) plasma. The concept of an ionizing wavefront created by accelerated suprathermal electrons appears to be in accordance with the data. The strong Langmuir turbulence (SLT) regime is revealed by the specific spectral features of incoherent radar backscatter and stimulated electromagnetic emissions. Theory predicts that the SLT acceleration is facilitated in the presence of photoelectrons. This agrees with the intensified artificial plasma production and the greater speeds of descent but weaker incoherent radar backscatter in the sunlit ionosphere. Numerical investigation of propagation of O‐mode waves and the development of SLT and descending layers have been performed. The greater extent of the SLT region at the magnetic zenith than that at vertical appears to make magnetic zenith injections more efficient for electron acceleration and descending layers. At high powers, anomalous absorption is suppressed, leading to the Langmuir and upper hybrid processes during the whole heater on period. The data suggest that parametric upper hybrid interactions mitigate anomalous absorption at heating frequencies far from electron gyroharmonics and also generate SLT in the upper hybrid layer. The persistence of artificial plasma at the terminal altitude depends on how close the heating frequency is to the local gyroharmonic.

show abstract

Ion-acoustic turbulence and anomalous transport

Cited by 101 publications

References 80 publications

Response to “Comment on ‘Graphical analysis of electron inertia induced acoustic instability' ” [Phys. Plasmas 13, 104701 (2006)]

Response to “Comment on ‘Graphical analysis of electron inertia induced acoustic instability' ” [Phys. Plasmas 13, 104701 (2006)]

Onset of fast magnetic reconnection via subcritical bifurcation

Artificial ionospheric layers driven by high‐frequency radiowaves: An assessment

Contact Info

Product

Resources

About