Inelastic Neutron Scattering by Pristine And Doped Phases of Polyacetylene

1994 ◽  
Vol 376 ◽  
Author(s):  
P. Papanek ◽  
J. E. Fischer ◽  
J. L. Sauvajou ◽  
A. J. Dianoux ◽  
P. M. Mcneillis ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Time Of Flight ◽  
Inelastic Neutron ◽  
Vibrational Modes ◽  
Incoherent Neutron Scattering ◽  
Oriented Samples ◽  
Scattering Spectra ◽  
Incoherent Neutron

ABSTRACTInelastic incoherent neutron-scattering spectra of cis-, trans- and Na-doped polyacety-lene are presented. The experiments were performed with time-of-flight and filter-analyzer spectrometers on stretch-oriented samples such that the polarization of vibrational modes could also be determined.

Neutron-scattering studies of the phase transitions in high-pressure ices during annealing

2003 ◽  
Vol 81 (1-2) ◽  
pp. 401-407 ◽  
Author(s):  
Y. Wang ◽  
A I Kolesnikov ◽  
S L Dong ◽  
J C Li
Keyword(s):  
Phase Transition ◽  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Covalent Bond ◽  
Transition Process ◽  
Inelastic Neutron ◽  
Incoherent Neutron Scattering ◽  
Phase Transition Process ◽  
Scattering Spectra ◽  
Three Body

Inelastic incoherent neutron scattering was used to study the phase transition process of high-density amorphous (HDA) ice to low-density amorphous (LDA) ice by thermal treatment. The results show that when the annealing temperature is lower than 136 K no obvious phase-transition is observed, and transformation of the HDA ice to the LDA ice occurs between 136 and 144 K. From comparison of the measured inelastic neutron-scattering spectra for HDA ice and ice Ih, it is found that the internal interactions (covalent bond O—H and three-body interaction H–O–H) are stronger in HDA ice, which correlates with the longer nearest O–O distances in HDA ice compared to ice Ih (2.80 and 2.75 Å, respectively). The report also discusses the differences in vibrational spectra of LDA ices obtained by different methods (annealing HDA ice and depositing water vapour on a cold substrate). PACS No.: 64.60-i

Anomalous vibrational modes in acetanilide as studied by inelastic neutron scattering

1992 ◽  
Vol 2 (10) ◽  
pp. 1929-1939 ◽  
Author(s):  
Mariette Barthes ◽  
Juegen Eckert ◽  
Susanna W. Johnson ◽  
Jacques Moret ◽  
Basil I. Swanson ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Vibrational Modes

Infrared, Raman, and Inelastic Neutron Scattering Spectra of Dodecahedrane:  anIhMolecule inThSite Symmetry

2005 ◽  
Vol 109 (15) ◽  
pp. 3418-3424 ◽  
Author(s):  
Bruce S. Hudson ◽  
Damian G. Allis ◽  
Stewart F. Parker ◽  
Anibal J. Ramirez-Cuesta ◽  
Henryk Herman ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Scattering Spectra

Intensities in inelastic neutron scattering spectra: A test of recent theory

1983 ◽  
Vol 77 (1) ◽  
pp. 145-151 ◽  
Author(s):  
Joseph Howard ◽  
Brian C. Boland ◽  
John Tomkinson
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Recent Theory ◽  
Scattering Spectra

Dynamics of CrystallineN-Methylacetamide:  Temperature Dependence of Infrared and Inelastic Neutron Scattering Spectra

1998 ◽  
Vol 102 (32) ◽  
pp. 6177-6183 ◽  
Author(s):  
Mariette Barthes ◽  
Heloisa N. Bordallo ◽  
Juergen Eckert ◽  
Olivier Maurus ◽  
Giorgio de Nunzio ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Temperature Dependence ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Scattering Spectra
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