1985
DOI: 10.1029/ja090ia06p05227
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Finite temperature stabilization of the gradient drift instability in barium clouds

Abstract: We present a relatively simple analysis of the gradient drift instability in barium clouds which includes the effects of both finite temperature and finite parallel length. It is found that short‐wavelength modes are stabilized as the electrons redistribute parallel to the magnetic field and neutralize the charge imbalance set up by the instability. An analytical expression for the critical wave number for stabilization is given as well as numerical results. We discuss the application of these results to the s… Show more

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Cited by 18 publications
(17 citation statements)
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“…The three‐dimensional equation for the electrostatic potential (Φ) of a warm, single‐ion plasma irregularity in a uniform magnetic field ( B=Bboldz^ ) and background neutral wind ( U=Uboldx^ ) is given by [ Drake et al , 1985]: 1B·true(nnormalΦtrue)+νinΩiTeB2n+νinΩiboldz^×U·n+ztrue[nemeνetrue(normalΦzTnenztrue)true]=0, where ν in and Ω i are the ion collision frequency and gyrofrequency, respectively, and ν e is the electron collision frequency. We assumed thermodynamical equilibrium ( T e = T i = T ).…”
Section: Analytical Approachmentioning
confidence: 99%
See 1 more Smart Citation
“…The three‐dimensional equation for the electrostatic potential (Φ) of a warm, single‐ion plasma irregularity in a uniform magnetic field ( B=Bboldz^ ) and background neutral wind ( U=Uboldx^ ) is given by [ Drake et al , 1985]: 1B·true(nnormalΦtrue)+νinΩiTeB2n+νinΩiboldz^×U·n+ztrue[nemeνetrue(normalΦzTnenztrue)true]=0, where ν in and Ω i are the ion collision frequency and gyrofrequency, respectively, and ν e is the electron collision frequency. We assumed thermodynamical equilibrium ( T e = T i = T ).…”
Section: Analytical Approachmentioning
confidence: 99%
“…[4] The three-dimensional equation for the electrostatic potential (F) of a warm, single-ion plasma irregularity in a uniform magnetic field (B ¼ Bẑ ) and background neutral wind (U ¼ Ux) is given by [Drake et al, 1985]:…”
Section: Analytical Approachmentioning
confidence: 99%
“…The mechanism which causes the structuring of ionospheric clouds is the ExB gradient drift instability. 3 This instability has been extensively studied both theoretically [4][5][6][7][8][9] and computationally. 10 " 14 Although a considerable amount of research has been carried out on this instability, there are several deficiencies with regard to its application to ionospheric plasma clouds.…”
mentioning
confidence: 99%
“…These earlier studies clearly need to be modified for the blob-related structure, since, as has been noted earlier, the blobs have finite length in the direction parallel to the field lines. The work on the E x B instability in barium clouds has shown that the growth rate is severely modified for the long-wavelength modes when the finite parallel size of the cloud is considered [Vb'lk and Haerendel, 1971;Goldman et al, 1976;Sperling et al, 1984;Drake et al, 1985;Drake and Huba, 1986]. A similar analysis carried out for the current convective instability has demonstrated that the instability growth rate is reduced of the order of 2 orders of magnitude for the scintillation-causing scale sizes (for the observed blob sizes) .…”
Section: Paper Number 6a8773mentioning
confidence: 95%