Search results for: E. A. Goremychkin

Items from 1 to 4 out of 4 results

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Neutron Spectroscopy of the Atomic Dynamics of La₂Zr₂O₇ at Fluorite–Pyrochlore Structural Transformations

P. S. Savchenkov, E. A. Goremychkin, V. V. Popov, B. L. Shapir, more

JETP Letters > 2018 > 108 > 8 > 532-536

The formation of the structural and dynamic properties of La₂Zr₂O₇ in the process of crystallization at the isothermal annealing of initially amorphous precursors obtained by the coprecipitation of corresponding salts has been studied by neutron spectroscopy. The existence of vibrational states characteristic of hydrogen, which is in one or another of the possible chemical states and is incorporated...

article

On a neutron detector based on TlInSe₂ crystals intercalated with a lithium isotope

I. V. Alekseev, E. A. Goremychkin, N. A. Gundorin, A. V. Petrenko, more

Semiconductors > 2017 > 51 > 6 > 740-744

The possibility of increasing the sensitivity of a neutron detector based on a TlInSe₂ crystal by introducing the ⁶Li isotope into this crystal is investigated. Introduction of the isotope is conducted by the method of electrochemical intercalation from aqueous and nonaqueous solutions of LiCl and also from the melt of the LiCl–KCl eutectic. It is shown that intercalation by the electrochemical method...

article

Neutron lifetime and density of states of fluoropolymers at low temperatures

E. A. Goremychkin, Yu. N. Pokotilovski

JETP Letters > 2017 > 105 > 8 > 548-551

Present status of the measurements of the neutron lifetime is shortly reviewed. We report the inelastic neutron scattering measurement of the density of vibrational states G(ω) of two fluoropolymers, which are promising coating materials for the storage of ultracold neutrons (UCNs) in closed volumes covered with polymer film. From determined G(ω), we calculate the expected UCN loss coefficients.

article

Magnetic dynamics in an electron-doped YbB₁₂ condo insulator

P. A. Alekseev, V. N. Lazukov, K. S. Nemkovski, J. -M. Mignot, more

Bulletin of the Russian Academy of Sciences: Physics > 2011 > 75 > 8 > 1149-1152

Neutron spectroscopy results are presented for electron-doped YbB₁₂-based systems. Electrondoping effects were obtained through the partial substitution of Yb for four-valence Zr, and through the introduction of a small amount of carbon in the boron sublattice of a YbB₁₂ condo insulator. The different character of the original YbB₁₂ gap-type magnetic-excitation-spectrum changes was observed.

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Search results for: E. A. Goremychkin

Neutron Spectroscopy of the Atomic Dynamics of La₂Zr₂O₇ at Fluorite–Pyrochlore Structural Transformations

On a neutron detector based on TlInSe₂ crystals intercalated with a lithium isotope

Neutron lifetime and density of states of fluoropolymers at low temperatures

Magnetic dynamics in an electron-doped YbB₁₂ condo insulator

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Search results for: E. A. Goremychkin

Neutron Spectroscopy of the Atomic Dynamics of La2Zr2O7 at Fluorite–Pyrochlore Structural Transformations

On a neutron detector based on TlInSe2 crystals intercalated with a lithium isotope

Neutron lifetime and density of states of fluoropolymers at low temperatures

Magnetic dynamics in an electron-doped YbB12 condo insulator

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Neutron Spectroscopy of the Atomic Dynamics of La₂Zr₂O₇ at Fluorite–Pyrochlore Structural Transformations

On a neutron detector based on TlInSe₂ crystals intercalated with a lithium isotope

Magnetic dynamics in an electron-doped YbB₁₂ condo insulator