Collective dynamics in molten potassium: An inelastic x-ray scattering study

A. Monaco; T. Scopigno; P. Benassi; A. Giugni; G. Monaco; M. Nardone; G. Ruocco; M. Sampoli

doi:10.1063/1.1689641

Collective dynamics in molten potassium: An inelastic x-ray scattering study

A. Monaco^*, T. Scopigno, P. Benassi, A. Giugni, G. Monaco, M. Nardone, G. Ruocco, M. Sampoli

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

The high-frequency collective dynamics of molten potassium was disucssed using inelastic x-ray scattering. It was found that a two-step relaxation scenario similar to that found in other liquid metals applied to liquid potassium. It was found that the Brillouin linewidth was not related to the whole longitudinal velocity but rather to the 'microscopic' part of the viscosity. The microscopic relaxation process which were traced back to the presence of 'instantaneous' disorder rather than to the crossover from a liquid to solidlike response was also elaborated.

Original language	English (US)
Pages (from-to)	8089-8094
Number of pages	6
Journal	JOURNAL OF CHEMICAL PHYSICS
Volume	120
Issue number	17
DOIs	https://doi.org/10.1063/1.1689641
State	Published - May 1 2004
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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abstract = "The high-frequency collective dynamics of molten potassium was disucssed using inelastic x-ray scattering. It was found that a two-step relaxation scenario similar to that found in other liquid metals applied to liquid potassium. It was found that the Brillouin linewidth was not related to the whole longitudinal velocity but rather to the 'microscopic' part of the viscosity. The microscopic relaxation process which were traced back to the presence of 'instantaneous' disorder rather than to the crossover from a liquid to solidlike response was also elaborated.",

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T2 - An inelastic x-ray scattering study

AU - Monaco, A.

AU - Scopigno, T.

AU - Benassi, P.

AU - Giugni, A.

AU - Monaco, G.

AU - Nardone, M.

AU - Ruocco, G.

AU - Sampoli, M.

PY - 2004/5/1

Y1 - 2004/5/1

N2 - The high-frequency collective dynamics of molten potassium was disucssed using inelastic x-ray scattering. It was found that a two-step relaxation scenario similar to that found in other liquid metals applied to liquid potassium. It was found that the Brillouin linewidth was not related to the whole longitudinal velocity but rather to the 'microscopic' part of the viscosity. The microscopic relaxation process which were traced back to the presence of 'instantaneous' disorder rather than to the crossover from a liquid to solidlike response was also elaborated.

AB - The high-frequency collective dynamics of molten potassium was disucssed using inelastic x-ray scattering. It was found that a two-step relaxation scenario similar to that found in other liquid metals applied to liquid potassium. It was found that the Brillouin linewidth was not related to the whole longitudinal velocity but rather to the 'microscopic' part of the viscosity. The microscopic relaxation process which were traced back to the presence of 'instantaneous' disorder rather than to the crossover from a liquid to solidlike response was also elaborated.

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U2 - 10.1063/1.1689641

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JO - JOURNAL OF CHEMICAL PHYSICS

JF - JOURNAL OF CHEMICAL PHYSICS

IS - 17

ER -

Collective dynamics in molten potassium: An inelastic x-ray scattering study

Abstract

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