Колебательно-вращательный спектр высокого разрешения в районе полос 3&nu;-=SUB=-4-=/SUB=-, &nu;-=SUB=-2-=/SUB=-+2&nu;-=SUB=-4-=/SUB=- и 2&nu;-=SUB=-2-=/SUB=-+&nu;-=SUB=-4-=/SUB=- молекулы -=SUP=-72-=/SUP=-GeH-=SUB=-4-=/SUB=-

The high-resolution spectrum of the 72GeH4 molecule was recorded on a Bruker IFS 125HR Fourier spectrometer with an optical resolution of 0.003 cm-1. The line positions were analyzed for ten interacting vibrational-rotational bands 3ν4 (1F2, F1, 2F2), v2+ 2ν4 (1E, F1, F2, 2E) and 2ν2+v4 (1F2, F1, 2F2) in the range 2350-2750 cm-1. As a result of the analysis, 1726 experimental lines were identified with the maximum value of the quantum number Jmax = 17; then used in the fitting procedure with parameters of the effective Hamiltonian. The resulting set of 35 spectroscopic parameters describes the vibrational-rotational structure of the spectrum with drms = 7.5 · 10-4 cm-1.

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Спектр высокого разрешения полос ν-=SUB=-2-=/SUB=-+ν-=SUB=-4-=/SUB=- (F-=SUB=-1-=/SUB=-,F-=SUB=-2-=/SUB=-) и 2ν-=SUB=-4-=/SUB=- (F-=SUB=-2-=/SUB=-) дейтерированного силана -=SUP=-28-=/SUP=-SiD-=SUB=-4-=/SUB=-

Оптика и спектроскопия ◽

10.21883/os.2021.09.51336.2075-21 ◽

2021 ◽

Vol 129 (9) ◽

pp. 1122

Author(s):

А.В. Кузнецов ◽

Н.И. Распопова ◽

Е.С. Бехтерева ◽

О.В. Громова

Keyword(s):

Absorption Spectrum ◽

High Resolution ◽

Least Square ◽

Rotational Structure ◽

High Resolution Spectrum ◽

Centrifugal Distortion ◽

Vibrational States ◽

Silane Molecule ◽

Least Square Fit ◽

First Time

A study of the fine rotational structure of the silane molecule absorption spectrum was carried out for the first time. The high-resolution spectrum of 28SiD4 was recorded in the 1260-1480 cm-1 spectral range the vibrational ν2+ν4 (F1,F2) and 2ν4 (F2) bands were theoretically analyzed. Rotational, centrifugal distortion, tetrahedral splitting and resonance interaction parameters of the upper vibrational states were obtained from the weighted least square fit method. The set parameters obtained reproduces the initial vibrational-rotational structure of the ν2 + ν4 (F1, F2) and 2ν4 (F2) bands with an accuracy of drms = 3.9 · 10-4 cm-1.

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ANALYSIS OF THE ATOMIC Fe3d AND 4s PARTIAL CROSS SECTIONS IN THE REGION OF THE 3p → 3d GIANT RESONANCE

Surface Review and Letters ◽

10.1142/s0218625x0200355x ◽

2002 ◽

Vol 09 (02) ◽

pp. 1229-1233 ◽

Cited By ~ 2

Author(s):

S. B. WHITFIELD ◽

R. WEHLITZ ◽

M. O. KRAUSE ◽

C. D. CALDWELL

Keyword(s):

High Resolution ◽

Synchrotron Radiation ◽

Cross Sections ◽

Systematic Study ◽

Giant Resonance ◽

Fitting Procedure

Using the technique of photoelectron spectrometry in conjunction with synchrotron radiation, we have carried out a systematic study of the partial cross sections of the main photoelectron lines arising from the ionization of the 3d and 4s subshells of atomic Fe in the vicinity of 3p → 3d autoionizing resonances. Our results confirm the presence of two broad and intense resonances which have been observed earlier. However, our high resolution results also clearly indicate the presence of numerous other weaker resonances. Through a fitting procedure we were able to accurately determine both resonance widths and positions.

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Study of the high resolution spectrum of 32 S 16 O 18 O: The ν 1 and ν 3 bands

Journal of Quantitative Spectroscopy and Radiative Transfer ◽

10.1016/j.jqsrt.2015.08.010 ◽

2016 ◽

Vol 168 ◽

pp. 29-39 ◽

Cited By ~ 16

Author(s):

O.N. Ulenikov ◽

E.S. Bekhtereva ◽

Yu.V. Krivchikova ◽

V.A. Zamotaeva ◽

T. Buttersack ◽

...

Keyword(s):

High Resolution ◽

High Resolution Spectrum ◽

O 18

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High resolution spectrum of GdO

Canadian Journal of Physics ◽

10.1139/p76-291 ◽

1976 ◽

Vol 54 (24) ◽

pp. 2429-2434 ◽

Cited By ~ 6

Author(s):

B. R. Yadav ◽

S. B. Rai ◽

D. K. Rai

Keyword(s):

High Resolution ◽

Emission Spectrum ◽

Visible Emission ◽

High Resolution Spectrum ◽

First Order ◽

Isotopic Shifts ◽

Vibrational Constants ◽

Dc Arc

The visible emission spectrum of the GdO molecule has been produced in a DC arc source and has been photographed in the first order of a 10.6 m grating spectrograph. Bands are shown to have a six-headed structure and improved vibrational constants have been obtained in this study. Isotopic shifts have been calculated for the various isotopic molecules. Tentative suggestions regarding the nature of the transition have been made.

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High resolution spectrum of NO2 loosely bound states: densities of states and long range forces

Physical Chemistry Chemical Physics ◽

10.1039/b010252k ◽

2001 ◽

Vol 3 (12) ◽

pp. 2268-2274 ◽

Cited By ~ 7

Author(s):

Sylvain Heilliette ◽

Antoine Delon ◽

Patrick Dupre´ ◽

Re´my Jost

Keyword(s):

High Resolution ◽

Long Range ◽

Bound States ◽

High Resolution Spectrum ◽

Densities Of States

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A Novel Method for 13C-NMR Spectroscopy of Polymer in Emulsion: Quantitative Analysis of Microstructure of Crosslinked Polybutadiene in Latex

Rubber Chemistry and Technology ◽

10.5254/1.3538836 ◽

1999 ◽

Vol 72 (5) ◽

pp. 844-853 ◽

Cited By ~ 11

Author(s):

Seiichi Kawahara ◽

Saori Bushimata ◽

Takashi Sugiyama ◽

Chihiro Hashimoto ◽

Yasuyuki Tanaka

Keyword(s):

Nmr Spectroscopy ◽

High Resolution ◽

13C Nmr ◽

Lattice Relaxation ◽

13C Nmr Spectroscopy ◽

Lattice Relaxation Time ◽

Solid Sample ◽

Spin Lattice Relaxation ◽

High Resolution Spectrum ◽

C Nmr

Abstract A novel analytical method using high resolution 13C-NMR spectroscopy to study polymer latex, which is a heterogeneous system comprising polymer dispersoid and water, is described. The appropriate concentrations of surfactant and dried rubber content of a polybutadiene latex, which give the best spectrum, were found to be 1 w/v % and 10%, respectively. The half-widths of resonance peaks for the latex sample were almost identical to the half-widths obtained in solution, which were about one-third the width of those obtained using a solid sample of either a crosslinked or soluble polybutadiene. Nevertheless, the signal to noise ratio for the latex sample was slightly smaller than that for the solution sample. The values of spin-lattice relaxation time, T1, for the latex sample were similar to those for the solid sample. These demonstrate that the latex state C-NMR spectroscopy will be a powerful technique for structural characterization of crosslinked gels in the dispersoid because it gives a high resolution spectrum comparable to solution state spectroscopy, showing short T1 values corresponding to those for solid state C-NMR spectroscopy. High resolution latex state 13C-NMR spectroscopy was used to determine the concentrations of the various isomers of the polybutadiene in the dispersoid.

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