Pursuit of quantum monodromy in the far-infrared and mid-infrared spectra of NCNCS using synchrotron radiation

2014 ◽  
Vol 16 (33) ◽  
pp. 17373-17407 ◽  
Author(s):  
Manfred Winnewisser ◽  
Brenda P. Winnewisser ◽  
Frank C. De Lucia ◽  
Dennis W. Tokaryk ◽  
Stephen C. Ross ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Infrared Spectra ◽  
Far Infrared ◽  
Mid Infrared ◽  
Spectral Pattern ◽  
Actual Spectrum

Quantum monodromy in NCNCS produces this predicted complex rotational and rovibrational spectral pattern, which guided our search for the actual spectrum.

scholarly journals SYNCHROTRON RADIATION AND THE FAR-INFRARED AND MID-INFRARED SPECTRA OF NCNCS

2014 ◽  
Author(s):  
Manfred Winnewisser ◽  
Brant Billinghurst ◽  
Stephen Ross ◽  
Dennis Tokaryk ◽  
Frank De Lucia ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Infrared Spectra ◽  
Far Infrared ◽  
Mid Infrared

Infrared spectra of the natural zeolite heulandite

1985 ◽  
Vol 50 (10) ◽  
pp. 2134-2138 ◽  
Author(s):  
František Pechar
Keyword(s):  
Absorption Spectra ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Natural Zeolite ◽  
Room Temperature ◽  
Far Infrared ◽  
Reflection Spectra ◽  
Mid Infrared

The mid-infrared (4 000-200 cm-1) absorption spectra, far infrared (400-40 cm-1) absorption spectra, infrared (1 400-200 cm-1) reflection spectra, and Raman spectra (3 600-50 cm-1) were measured at room temperature for polycrystalline heulandite, a natural zeolite from Poonah, India.

scholarly journals Removal of Etalon Features in the Far-Infrared–Terahertz Transmittance Spectra of Thin Polymer Films

2020 ◽  
Vol 74 (12) ◽  
pp. 1530-1539
Author(s):  
Ulrich Schade ◽  
Dawei Cao ◽  
Ljiljana Puskar ◽  
Eglof Ritter ◽  
Jörg Beckmann
Keyword(s):  
Infrared Spectra ◽  
Polymer Films ◽  
Far Infrared ◽  
Thin Polymer Films ◽  
Model Calculations ◽  
Mid Infrared ◽  
Thin Polymer ◽  
Infrared Spectral ◽  
Total Transmittance ◽  
Far Infrared Spectra

Etalon features in infrared spectra of stratified samples, their influence on the interpretation, and methods to circumvent their presence in infrared spectra have been in discussion for decades. This paper focuses on the application of a method originally developed to remove interference fringes in the mid-infrared spectra for far-infrared Fourier transform spectroscopy on thin polymer films. We show that the total transmittance reflectance technique, commonly used for mid-infrared, also works successfully in the far-infrared spectral range where other approaches fail. Experimental spectra obtained by such technique are supported by model calculations and reveal the possibility and limits to obtain almost undisturbed far-infrared spectra which are suitable to determine low-energy vibrations of ionomer salts under certain sample conditions.

scholarly journals High-Pressure Spectroscopy Study of Zn(IO3)2 Using Far-Infrared Synchrotron Radiation

Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 34
Author(s):  
Akun Liang ◽  
Robin Turnbull ◽  
Enrico Bandiello ◽  
Ibraheem Yousef ◽  
Catalin Popescu ◽  
...  
Keyword(s):  
High Pressure ◽  
Phase Transitions ◽  
Synchrotron Radiation ◽  
Infrared Radiation ◽  
Room Temperature ◽  
Far Infrared ◽  
Low Pressure ◽  
Pressure Response ◽  
Spectroscopy Study ◽  
Far Infrared Radiation

We report the first high-pressure spectroscopy study on Zn(IO3)2 using synchrotron far-infrared radiation. Spectroscopy was conducted up to pressures of 17 GPa at room temperature. Twenty-five phonons were identified below 600 cm−1 for the initial monoclinic low-pressure polymorph of Zn(IO3)2. The pressure response of the modes with wavenumbers above 150 cm−1 has been characterized, with modes exhibiting non-linear responses and frequency discontinuities that have been proposed to be related to the existence of phase transitions. Analysis of the high-pressure spectra acquired on compression indicates that Zn(IO3)2 undergoes subtle phase transitions around 3 and 8 GPa, followed by a more drastic transition around 13 GPa.

scholarly journals Creation of Lunar and Hermean analogue mineral powder samples for solar wind irradiation experiments and mid-infrared spectra analysis

Icarus ◽  
2021 ◽  
Vol 365 ◽  
pp. 114492
Author(s):  
Noah Jäggi ◽  
André Galli ◽  
Peter Wurz ◽  
Herbert Biber ◽  
Paul Stefan Szabo ◽  
...  
Keyword(s):  
Solar Wind ◽  
Infrared Spectra ◽  
Spectra Analysis ◽  
Mid Infrared ◽  
Powder Samples ◽  
Mineral Powder

Far-infrared spectra of polycrystallineBa2YCu3O9−δ

1987 ◽  
Vol 36 (1) ◽  
pp. 846-849 ◽  
Author(s):  
G. A. Thomas ◽  
H. K. Ng ◽  
A. J. Millis ◽  
R. N. Bhatt ◽  
R. J. Cava ◽  
...  
Keyword(s):  
Infrared Spectra ◽  
Far Infrared ◽  
Far Infrared Spectra
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