Size dependence of Raman line-shape parameters due to confined phonons in silicon nanowires

Isotropic Raman line shapes of simple molecular fluids exhibit critical line broadening near their respective liquid-gas critical points. In order to observe this phenomenon, it is essential that the band position of a given vibrational mode is density-dependent, and that vibrational depopulation processes negligibly contribute to line broadening. Special attention was given to the fact that the isotropic (i.e., nonrotationally broadened) line shape of liquid N2 is affected by resonant intermolecular vibrational interactions between identical oscillators. By means of the well-chosen isotopic mixture (14N2).975 - (14N15N).025, the temperature and density dependences of shift, width, and asymmetry of the resonantly coupled 14N2 and, depending on the S/N ratio available, of the resonantly uncoupled 14N15N were determined, with up to milli-Kelvin resolution, in the coexisting liquid and gas phases and along the critical isochore, using a highest-resolution double monochromator and modern charge-coupled device detection techniques. Clear evidence was found that vibrational resonance couplings are present in all dense phases studied.

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Vibrational relaxation in liquid hydrogen and deuterium bromide—The influence of self and distinct correlation functions on the isotropic and anisotropic Raman line shape

The Journal of Chemical Physics ◽

10.1063/1.449386 ◽

1985 ◽

Vol 83 (4) ◽

pp. 1499-1506 ◽

Cited By ~ 9

Author(s):

Karl‐Ludwig Oehme ◽

Georg Rudakoff ◽

Klaus Klostermann

Keyword(s):

Raman Line ◽

Correlation Functions ◽

Line Shape ◽

Vibrational Relaxation ◽

Liquid Hydrogen

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Table 114. D2 18O (D18OD): Line shape parameters for (010)–(000) transitions in the range 989–1242 cm-1

Non-linear Triatomic Molecules ◽

10.1007/978-3-642-41449-7_116 ◽

2014 ◽

pp. 402-403

Author(s):

G. Guelachvili ◽

N. Picqué

Keyword(s):

Line Shape ◽

Shape Parameters

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Line-shape parameters for the first rotational lines of HD in He

Molecular Astrophysics ◽

10.1016/j.molap.2020.100063 ◽

2020 ◽

Vol 19 ◽

pp. 100063 ◽

Cited By ~ 4

Author(s):

Franck Thibault ◽

Raúl Z. Martínez ◽

Dionisio Bermejo ◽

Piotr Wcisło

Keyword(s):

Line Shape ◽

Shape Parameters

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Fully quantum calculations of the line-shape parameters for the Hartmann-Tran profile: A CO-Ar case study

Journal of Quantitative Spectroscopy and Radiative Transfer ◽

10.1016/j.jqsrt.2019.106803 ◽

2020 ◽

Vol 243 ◽

pp. 106803 ◽

Cited By ~ 5

Author(s):

Grzegorz Kowzan ◽

Piotr Wcisło ◽

Michał Słowiński ◽

Piotr Masłowski ◽

Alexandra Viel ◽

...

Keyword(s):

Line Shape ◽

Quantum Calculations ◽

Shape Parameters

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THE SHAPES OF PHOTOELECTRON SATELLITE SPECTRA

Surface Review and Letters ◽

10.1142/s0218625x02003536 ◽

2002 ◽

Vol 09 (02) ◽

pp. 1209-1212 ◽

Cited By ~ 2

Author(s):

V. G. YARZHEMSKY ◽

V. I. NEFEDOV ◽

M. YA. AMUSIA ◽

L. V. CHERNYSHEVA

Keyword(s):

Line Shape ◽

Shape Parameters ◽

Line Shapes ◽

Peak Structure ◽

Experimental Line

Line shapes of photoionization satellites are theoretically investigated. Calculations were carried out for the satellite states 1s2s(3S)3s(2S) and 3s3p5(1P)4s(2P) of Ne 1s and Ar 3p vacancies, respectively, created in photoionization. Theory excellently reproduces experimental line shape parameters of the first satellite and predicts the two-peak structure of the second.

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EXAFS STUDY ON THE NONCRYSTALLINE STRUCTURE OF BINARY COMPONENT (BiCu, BiTe) NANOPHASE PARTICLES

Surface Review and Letters ◽

10.1142/s0218625x96000164 ◽

1996 ◽

Vol 03 (01) ◽

pp. 71-74 ◽

Cited By ~ 1

Author(s):

M. ITOH ◽

S. TOHNO ◽

M. ADACHI ◽

K. KIMURA

Keyword(s):

Melting Point ◽

Line Shape ◽

Size Dependence ◽

Thermal Fluctuation ◽

Exafs Spectrum ◽

Small Particles ◽

Bulk Materials ◽

Soft Surface ◽

Exafs Study ◽

Specific Line

From the viewpoint of the size dependence of the melting point of small particles, the microstructure of nanophase particles is investigated with EXAFS. Two EXAFS spectrum from BiCu and BiTe nanophase particles indicated the specific line shape due to the disorder of atomic structure of the particles, which was not found for corresponding bulk materials. This fact means that a nanophase particle has not only soft surface due to size effect but also a liquid-like inner structure caused by a thermal fluctuation.

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