High-resolution vibration–rotational spectra and rotational perturbation of the OO-stretching (ν6) band of CH2OO between 879.5 and 932.0 cm−1

2018 ◽  
Vol 20 (40) ◽  
pp. 25806-25811 ◽  
Author(s):  
Pei-Ling Luo ◽  
Yasuki Endo ◽  
Yuan-Pern Lee
Keyword(s):  
High Resolution ◽  
Optical Resolution ◽  
Rotational Spectra ◽  
Rotational Perturbation

We report the observation of a rotationally resolved ν6 band associated with the OO-stretching mode of the simplest Criegee intermediate, CH2OO, in the range of 879.5–932.0 cm−1 (11.37–10.73 μm) at an optical resolution of 0.0015 cm−1.

HIGH RESOLUTION RAMAN SPECTROSCOPY OF GASES: XIII. ROTATIONAL SPECTRA AND STRUCTURES OF THE ZINC-, CADMIUM-, AND MERCURY-DIMETHYL MOLECULES

1960 ◽  
Vol 38 (11) ◽  
pp. 1516-1525 ◽  
Author(s):  
K. Suryanarayana Rao ◽  
B. P. Stoicheff ◽  
R. Turner
Keyword(s):  
Raman Spectroscopy ◽  
High Resolution ◽  
Rotational Constants ◽  
Carbon Bond ◽  
Rotational Spectra ◽  
Bond Lengths ◽  
Zinc Cadmium ◽  
Symmetric Top Molecules

The pure rotational spectra of gaseous Zn(CH3)2, Cd(CH3)2, Hg(CH3)2, and of the fully deuterated molecules have been photographed with a 21-ft grating. The spectra are typical of symmetric top molecules and consist of many evenly spaced rotational lines having a separation of about 0.45 cm−1. An analysis of the spectra yielded the rotational constants (in cm−1)[Formula: see text]From these constants the following metal—carbon bond lengths were determined: Zn—C = 1.929 Å, Cd—C = 2.112 Å, and Hg—C = 2.094 Å. Relations for the C—H bond lengths and HCH angles were also obtained.

Investigation of the 14N Quadrupole Hyperfine Structure and the Stark Effect of Methyl Isocyanate and Methyl Isothiocyanate by Microwave Fourier Transform Spectroscopy

1986 ◽  
Vol 41 (4) ◽  
pp. 637-640 ◽  
Author(s):  
W. Kasten ◽  
H. Dreizler
Keyword(s):  
Fourier Transform ◽  
High Resolution ◽  
Hyperfine Structure ◽  
Stark Effect ◽  
Dipole Moments ◽  
Fourier Transform Spectroscopy ◽  
Methyl Isocyanate ◽  
Methyl Isothiocyanate ◽  
Rotational Spectra ◽  
Coupling Tensor

The nitrogen 14N quadrupole hyperfine structure and the Stark effect in the rotational spectra of methyl isocyanate and methyl isothiocyanate were investigated by high resolution microwave Fourier transform spectroscopy.The components of the coupling tensor in the principal inertia axis system and the n a components of the dipole moments have been determined.

High resolution spectral analysis of oxygen. II. Rotational spectra of a1Δg  O2 isotopologues

2012 ◽  
Vol 137 (2) ◽  
pp. 024305 ◽  
Author(s):  
Brian J. Drouin ◽  
Harshal Gupta ◽  
Shanshan Yu ◽  
Charles E. Miller ◽  
Holger S. P. Müller
Keyword(s):  
Spectral Analysis ◽  
High Resolution ◽  
Rotational Spectra

HIGH RESOLUTION RAMAN SPECTROSCOPY OF GASES: VIII. ROTATIONAL SPECTRA OF ACETYLENE, DIACETYLENE, DIACETYLENE-d2, AND DIMETHYLACETYLENE

1957 ◽  
Vol 35 (4) ◽  
pp. 373-382 ◽  
Author(s):  
J. H. Callomon ◽  
B. P. Stoicheff
Keyword(s):  
Raman Spectroscopy ◽  
High Resolution ◽  
Raman Spectra ◽  
Rotational Constants ◽  
Related Molecule ◽  
Rotational Spectra ◽  
Carbon Carbon Bonds ◽  
Carbon Bonds

The pure rotational Raman spectra of acetylene (C2H2), diacetylene (C4H2 and C4D2), and dimethylacetylene (C4H6) have been photographed with a 21-ft. grating spectrograph. The rotational constants were found to be B0(C2H2) = 1.1769 cm−1, B0(C4H2) = 0.14689 cm−1, B0(C4D2) = 0.12767 cm−1, and B0(C4H6) = 0.1122 cm−1. An analysis shows that r0(C—H) in diacetylene is shorter than in acetylene and cyanoacetylene; in dimethylacetylene at least one of the carbon–carbon bonds is longer than in the closely related molecule methylacetylene.

scholarly journals Колебательно-вращательный спектр высокого разрешения в районе полос 3ν-=SUB=-4-=/SUB=-, ν-=SUB=-2-=/SUB=-+2ν-=SUB=-4-=/SUB=- и 2ν-=SUB=-2-=/SUB=-+ν-=SUB=-4-=/SUB=- молекулы -=SUP=-72-=/SUP=-GeH-=SUB=-4-=/SUB=-

2022 ◽  
Vol 130 (3) ◽  
pp. 345
Author(s):  
А.В. Кузнецов ◽  
Н.И. Распопова ◽  
О.В. Громова ◽  
Е.С. Бехтерева ◽  
М.А. Кошелев ◽  
...  
Keyword(s):  
High Resolution ◽  
Quantum Number ◽  
Optical Resolution ◽  
Rotational Structure ◽  
High Resolution Spectrum ◽  
Effective Hamiltonian ◽  
Rotational Bands ◽  
Fitting Procedure ◽  
Maximum Value ◽  
Line Positions

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.

Specimen Devices for in Situ Experiments

1978 ◽  
Vol 36 (3) ◽  
pp. 319-329
Author(s):  
P.R. Swann
Keyword(s):  
Electron Microscope ◽  
High Resolution ◽  
Optical Resolution ◽  
Design Feature ◽  
Pole Piece ◽  
Rapid Exchange ◽  
Working Volume ◽  
In Situ Experiments ◽  
Wide Gap

The space available in the specimen region of the electron microscope has been the major limitation controlling the development of specimen devices. There has always been a tendency for microscope designers to minimize this available space in order to achieve the best electron optical resolution and this has made it very difficult to construct workable specimen devices for double tilting, heating, cooling, straining, etc. This problem has been recognized, however, and some microscopes have been equipped with a second interchangeable objective pole piece which although having a lower resolution has a large upper bore capable of accepting relatively complex top entry cartridges. This design feature has contributed greatly to the development of specimen devices capable of performing in situ experiments. Further impetus to the development of specimen devices has come from the availability of higher voltage microscopes which for equivalent resolutions have a larger working volume in the specimen region than conventional 100KV instruments. A particularly versatile pole piece design used in the AEI EM7 high voltage microscope is shown in figure 1. This design permits rapid exchange between a high resolution top entry pole piece, a wide gap (20mm) pole piece for side entry specimen rods and a wide bore (30mm) pole piece for large top entry specimen cartridges.

High-resolution 3D fusion method for optical-resolution photoacoustic microscopy using deep learning

2021 ◽  
Author(s):  
Sihang Li ◽  
Zhuangzhuang Wang ◽  
Bofang Chen ◽  
Chenghao Gu ◽  
Ziming Yu ◽  
...  
Keyword(s):  
Deep Learning ◽  
High Resolution ◽  
Optical Resolution ◽  
Fusion Method ◽  
Photoacoustic Microscopy
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