Effect of axial magnetic flux compression on the magnetic Rayleigh-Taylor instability (theory)

Ryutov, D. D.; Awe, T. J.; Hansen, Stephanie B.; McBride, R. D.; Peterson, Kyle; Sinars, D.B.; Slutz, Stephen A.

doi:10.1063/1.4904778

Cited by 18 publications

(10 citation statements)

References 8 publications

(14 reference statements)

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“…However, for the reference case (40), the parameter Rad 0 is large ∼40 so that even for C = 30, the radiation remains insignificant. (Note that this conclusion relates to a pure DT plasma without impurities.)…”

Section: F Radiative Lossesmentioning

confidence: 96%

“…The brown dot marks a plasma produced in the astrophysics-related jet experiments of the type discussed in [39], row 4 in Table I. The light-blue dot corresponds to the plasma outside the liner early in the discharge [40]. We assume that the average charge state corresponds to Z = 6.…”

Section: General Characterization Of the Z -Pinch Plasmas A Collmentioning

confidence: 98%

“…Fig. 8 characterizes the evolution of transport coefficients over the whole implosion process for the set of parameters defined in (40) and is discussed in more detail in Section VI-C. Also shown in Fig. 8 is a magnetic diffusion coefficient (24) that scales as D M = D M0 /C 2 .…”

Section: B Collisionality and Magnetizationmentioning

confidence: 99%

“…For the set of parameters (40), one has Ac (0) ≈ 0.5. This means that initially we are operating in the transitional regime, where some redistribution of plasma along the pinch may take place.…”

Section: E Parallel Heat Lossesmentioning

confidence: 99%

“…The corresponding dimensionless parameter is Cond = (10/3)(vτ cond /r ). For a simple model of a constant implosion velocity v = r 0 /τ imp , one has For the set of parameters in (40) and τ imp = 70 ns, one has Cond (0) ≈ 6. In other words, the axial heat loss is small during the initial stage of the implosion but may become nonnegligible later in the pulse.…”

Section: E Parallel Heat Lossesmentioning

confidence: 99%

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Characterizing the Plasmas of Dense $Z$ -Pinches

Ryutov

2015

IEEE Trans. Plasma Sci.

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This mini-tutorial summarizes the plasma characteristics important for the Z-pinch research, with an emphasis on high-density collisional plasmas. It begins with the discussion of the most basic plasma properties related to collisionality and magnetization and then proceeds to more complex phenomena associated with magnetic field evolution in a highly dynamical plasma. Plasma transport properties are discussed mostly in conjunction with the Magnetized Liner Inertial Fusion concept. Issues of interplay of the classical and anomalous transport in a plasma whose pressure is higher than the magnetic pressure are elucidated. Differences in magnetic reconnection in weakly versus highly collisional plasmas are discussed. Kinetic effects and the role of microturbulence are mentioned in conjunction with the formation of high-energy tails in the particle distribution functions and the generation of particle beams. The discussion is based on the order-of-magnitude estimates suitable for initial orientation in the problem. The two appendixes contain some auxiliary material.

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Section: F Radiative Lossesmentioning

confidence: 96%

Section: General Characterization Of the Z -Pinch Plasmas A Collmentioning

confidence: 98%

Section: B Collisionality and Magnetizationmentioning

confidence: 99%

Section: E Parallel Heat Lossesmentioning

confidence: 99%

Section: E Parallel Heat Lossesmentioning

confidence: 99%

See 3 more Smart Citations

Characterizing the Plasmas of Dense $Z$ -Pinches

Ryutov

2015

IEEE Trans. Plasma Sci.

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Inertial Confinement Fusion - Experimental Physics: Z-Pinch and Magnetized Liner Inertial Fusion

Gómez

Sweeney

Ampleford

et al. 2021

Encyclopedia of Nuclear Energy

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Evolution of helical perturbations in a thin-shell model of an imploding liner

Ryutov

Dorf

2014

Physics of Plasmas

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A thin-shell model of the liner stability has been revisited and applied to the stability of the helical perturbations. Several stages of the implosion have been identified, starting from a long initial "latent" phase of an almost resting liner, continuing to the second stage of a rapid contraction and significant perturbation growth, and then transitioning to the third stage where perturbations become ballistic and highly non-linear. The stage of stagnation and rebound is beyond the scope of this paper. An importance of vorticity conservation during the late stages is emphasized. Nonlinear evolution of perturbations is followed up to the point of the formation of cusp structures. Effects of in-surface flows and of their enhancement due to the vorticity conservation are discussed. It is shown that the pre-machined perturbations created only on the outer surface of the liner grow much slower than one could anticipate. The limitations on the thin-shell description are discussed. V C 2014 AIP Publishing LLC.

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Effect of axial magnetic flux compression on the magnetic Rayleigh-Taylor instability (theory)

Cited by 18 publications

References 8 publications

Characterizing the Plasmas of Dense $Z$ -Pinches

Characterizing the Plasmas of Dense $Z$ -Pinches

Inertial Confinement Fusion - Experimental Physics: Z-Pinch and Magnetized Liner Inertial Fusion

Evolution of helical perturbations in a thin-shell model of an imploding liner

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