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Schindler, M.; Kondo, Yasushi; Pobell, F.

doi:10.1023/a:1022562901223

Journal of Low Temperature Physics

1998

DOI: 10.1023/a:1022562901223

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M. Schindler

Yasushi Kondo

F. Pobell

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Cited by 4 publications

(1 citation statement)

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“…The prediction by Ginzburg and Sobyanin [1] that sufficiently supercooled liquid molecular hydrogen may undergo transition to a superfluid state attracts much current attention. Recent theoretical calculations [2,3] show that such a transition may occur around 1.1 -1.2 K. On the experimental side, a lot of work has been done on molecular hydrogen in porous vycor glass [4,5] and on the thin hydrogen films adsorbed on different substrates [6]. Although some supercooling of liquid hydrogen was indeed observed in the experiment, the temperatures achieved were not sufficiently low to induce superfluid transition.…”

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confidence: 98%

Supercooling Molecular Hydrogen Down through the Superfluid Transition

Smolyaninov

2000

Phys. Rev. Lett.

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Recent calculations by Vorobev and Malyshenko (JETP Letters, 71, 39, 2000) show that molecular hydrogen may stay liquid and superfluid in strong electric fields of the order of 4 × 10 7 V /cm. I demonstrate that strong local electric fields of similar magnitude exist beneath a two-dimensional layer of electrons localized in the image potential above the surface of solid hydrogen. Even stronger local fields exist around charged particles (ions or electrons) if surface or bulk of a solid hydrogen crystal is statically charged. Measurements of the frequency shift of the 1 → 2 photoresonance transition in the spectrum of two-dimensional layer of electrons above positively or negatively charged solid hydrogen surface performed in the temperature range 7 -13.8 K support the prediction of electric field induced surface melting. The range of surface charge density necessary to stabilize the liquid phase of molecular hydrogen at the temperature of superfluid transition is estimated.

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confidence: 98%

Supercooling Molecular Hydrogen Down through the Superfluid Transition

Smolyaninov

2000

Phys. Rev. Lett.

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Condensed hydrogen for thermonuclear fusion

Kucheyev

Hamza

2010

Journal of Applied Physics

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Inertial confinement fusion (ICF) power, in either pure fusion or fission-fusion hybrid reactors, is a possible solution for future world’s energy demands. Formation of uniform layers of a condensed hydrogen fuel in ICF targets has been a long standing materials physics challenge. Here, we review the progress in this field. After a brief discussion of the major ICF target designs and the basic properties of condensed hydrogens, we review both liquid and solid layering methods, physical mechanisms causing layer nonuniformity, growth of hydrogen single crystals, attempts to prepare amorphous and nanostructured hydrogens, and mechanical deformation behavior. Emphasis is given to current challenges defining future research areas in the field of condensed hydrogens for fusion energy applications.

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Growth of Highly Oriented Deuterium Crystals in Silicon Nanochannels

et al. 2013

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The structure of solid deuterium confined in 9 nm wide tubular silicon nanochannels has been studied by means of elastic neutron scattering techniques. As a result we report the formation of fcc D(2) as the stable solid phase in confinement in contrast to the hcp bulk structure. Further, a preferred alignment of D(2) nanocrystals with respect to the surrounding crystalline silicon matrix is discussed in terms of heteroepitaxial growth of solid D(2) on crystalline pore walls.

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Untitled

Cited by 4 publications

References 15 publications

Supercooling Molecular Hydrogen Down through the Superfluid Transition

Supercooling Molecular Hydrogen Down through the Superfluid Transition

Condensed hydrogen for thermonuclear fusion

Growth of Highly Oriented Deuterium Crystals in Silicon Nanochannels

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