Extraction of the density of phonon states in LiH and NaH

D. Colognesi; A. J. Ramirez-Cuesta; M. Zoppi; R. Senesi; T. Abdul-Redah

doi:10.1016/j.physb.2004.03.271

Extraction of the density of phonon states in LiH and NaH

D. Colognesi
, A. J. Ramirez-Cuesta
, M. Zoppi
, R. Senesi
, T. Abdul-Redah

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

13 Scopus citations

Abstract

The inelastic neutron scattering spectra of LiH and NaH have been measured at low temperature. After an accurate evaluation of multiple scattering and multiphonon contributions, the proton-projected density of phonon states has been extracted for both samples. The NaH spectrum was previously totally unknown, while, as far as LiH is concerned, the present result substantially improves old neutron measurements, showing a better agreement with the existing lattice dynamics calculations. The proton mean kinetic energy in LiH, derived from the density of phonon states, is compared to new deep inelastic neutron scattering results.

Original language	English
Pages (from-to)	e983-e986
Journal	Physica B: Physics of Condensed Matter
Volume	350
Issue number	1-3 SUPPL. 1
DOIs	https://doi.org/10.1016/j.physb.2004.03.271
State	Published - Jul 15 2004
Externally published	Yes

Keywords

Alkali hydrides
Density of phonon states
Inelastic neutron scattering

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10.1016/j.physb.2004.03.271

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title = "Extraction of the density of phonon states in LiH and NaH",

abstract = "The inelastic neutron scattering spectra of LiH and NaH have been measured at low temperature. After an accurate evaluation of multiple scattering and multiphonon contributions, the proton-projected density of phonon states has been extracted for both samples. The NaH spectrum was previously totally unknown, while, as far as LiH is concerned, the present result substantially improves old neutron measurements, showing a better agreement with the existing lattice dynamics calculations. The proton mean kinetic energy in LiH, derived from the density of phonon states, is compared to new deep inelastic neutron scattering results.",

keywords = "Alkali hydrides, Density of phonon states, Inelastic neutron scattering",

author = "D. Colognesi and Ramirez-Cuesta, \{A. J.\} and M. Zoppi and R. Senesi and T. Abdul-Redah",

year = "2004",

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day = "15",

doi = "10.1016/j.physb.2004.03.271",

language = "English",

volume = "350",

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journal = "Physica B: Physics of Condensed Matter",

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TY - JOUR

T1 - Extraction of the density of phonon states in LiH and NaH

AU - Colognesi, D.

AU - Ramirez-Cuesta, A. J.

AU - Zoppi, M.

AU - Senesi, R.

AU - Abdul-Redah, T.

PY - 2004/7/15

Y1 - 2004/7/15

N2 - The inelastic neutron scattering spectra of LiH and NaH have been measured at low temperature. After an accurate evaluation of multiple scattering and multiphonon contributions, the proton-projected density of phonon states has been extracted for both samples. The NaH spectrum was previously totally unknown, while, as far as LiH is concerned, the present result substantially improves old neutron measurements, showing a better agreement with the existing lattice dynamics calculations. The proton mean kinetic energy in LiH, derived from the density of phonon states, is compared to new deep inelastic neutron scattering results.

AB - The inelastic neutron scattering spectra of LiH and NaH have been measured at low temperature. After an accurate evaluation of multiple scattering and multiphonon contributions, the proton-projected density of phonon states has been extracted for both samples. The NaH spectrum was previously totally unknown, while, as far as LiH is concerned, the present result substantially improves old neutron measurements, showing a better agreement with the existing lattice dynamics calculations. The proton mean kinetic energy in LiH, derived from the density of phonon states, is compared to new deep inelastic neutron scattering results.

KW - Alkali hydrides

KW - Density of phonon states

KW - Inelastic neutron scattering

UR - https://www.scopus.com/pages/publications/23044495325

U2 - 10.1016/j.physb.2004.03.271

DO - 10.1016/j.physb.2004.03.271

M3 - Article

AN - SCOPUS:23044495325

SN - 0921-4526

VL - 350

SP - e983-e986

JO - Physica B: Physics of Condensed Matter

JF - Physica B: Physics of Condensed Matter

IS - 1-3 SUPPL. 1

ER -

Extraction of the density of phonon states in LiH and NaH

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Keywords

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