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111.
LI Xiang LI Zhong XI Hongxia LUO Lingai The Institute of Chemical Engineering South China University of Technology Guangzhou China LSGC-CNRS-ENSIC rue Grandville BP Nancy Cedex France 《Chinese Journal of Reactive Polymers》2004,(Z1)
1. INTRODUCTION With the development of municipalization in China, more and more cities are challenged by the problem of how to dispose of the dramatically increased municipal waste. Generally, most of municipal solid waste is landfilled or dumped openly in the suburbs. It causes not only land waste, but also serious environment pollution. In order to solve efficiently the environment pollution caused by municipal solid waste, incineration technique was introduced in some big cities such… 相似文献
112.
A. Predoi-Cross R. M. Lees H. Lichau M. Winnewisser J. R. Drummond 《International Journal of Infrared and Millimeter Waves》1997,18(11):2047-2061
The rotational millimeter-wave spectrum of CH3
18OH has been revisited, and 162 transitions of botha- andb-types have been measured in the 119–165 GHz spectral range. The spectrum was recorded using the frequency-modulated millimeter-wave
spectrometer at the Justus-Liebig-Universit?t in Gie?en. The CH3
18OH transition assignments were based on energy levels obtained from the far-infrared analysis of S. Zhao (Ph.D. thesis, University
of New Brunswick, 1993) using the "Ritz" program of G. Moruzziet al. (J. Mol. Spectrosc.167, 156 (1994)) for direct energy level fitting. The relatively low residuals between calculated and observed frequencies highlight
the good quality of the results from this program. The newly measured transitions combined with those existent in the literature
have been included in least-squares fits to improve the set of rotational, torsional and centrifugal distortion constants
for O-18 methanol. 相似文献
113.
Herbst E Winnewisser G Yamada KM DeFrees DJ McLean AD 《The Journal of chemical physics》1989,91(10):5905-5909
A mechanism for the enhanced splitting detected in the millimeter-wave rotational spectra of the first excited S-S stretching state of HSSH (disulfane) has been studied. The mechanism, which involves a potential coupling between the first excited S-S stretching state and excited torsional states, has been investigated in part by the use of ab initio theory. Based on an ab initio potential surface, coupling matrix elements have been calculated, and the amount of splitting has then been estimated by second-order perturbation theory. The result, while not in quantitative agreement with the measured splitting, lends plausibility to the assumed mechanism. 相似文献
114.
115.
S.N. Mikhailenko K.A. Keppler Albert G. Mellau B.P. Winnewisser M. Winnewisser Vl.G. Tyuterev 《Journal of Quantitative Spectroscopy & Radiative Transfer》2008,109(16):2687-2696
Water vapor infrared spectra have been measured using the Bruker IFS 120 HR Fourier transform spectrometer at the Physikalisch-Chemisches Institut of the Justus-Liebig-Universität Giessen. Spectra were recorded at pressure-broadening-limited resolution and at room temperature in the range of 1900-6600 cm−1. The use of fully evacuated transfer optics and a White-type multireflection cell made it possible to obtain pressure×pathlength products up to 31.27 mbar×288.5 m. These spectra have previously been used to determine experimental values of rovibrational line positions and upper energy levels of the 2ν2, ν1, and ν3 bands [Mikhailenko SN, Tyuterev VlG, Keppler KA, Winnewisser BP, Winnewisser M, Mellau G, et. al. The 2ν2 band of water: analysis of new FTS measurements and high-Ka transitions and energy levels. J Mol Spectrosc 1997;184: 330-49] and of the 3ν2, ν1+ν2, and ν2+ν3 bands [Mikhailenko SN, Tyuterev VlG, Starikov VI, Albert KK, Winnewisser BP, Winnewisser M, et al. Water spectra in the region 4200-6250 cm−1, extended analysis of ν1+ν2, ν2+ν3, and 3ν2 bands and confirmation of highly excited states from flame spectra and from atmospheric long-path observations. J. Mol. Spectrosc. 2002; 213: 91-121].This work presents the intensities of 3769 lines for the weak and medium transitions in the spectral range indicated. These data provide an independent source of experimental information which is complementary to intensity data available in the literature and can thus help to evaluate experimental errors and the reliability of these spectral line parameters. 相似文献
116.
E. Möllmann A.G. MakiM. Winnewisser B.P. Winnewisser W. Quapp 《Journal of Molecular Spectroscopy》2002,212(1):22-31
The infrared spectra of two isotopomers of deuterium cyanide, D12C14N and D13C14N, were measured in emission at temperatures of 1370 K and 1520 K, respectively, in the range from 450 to 850 cm−1 and, for D12C14N, also from 1800 to 2800 cm−1. Assignments were made for rovibrational transitions to high bending states, v2=9 for D13C14N and v2=11 for D12C14N. To aid and verify the assignments, bands of the lower bending states, up to v2=3, were also measured in absorption at room temperature. A global fit was made of all measurements available to us for each isotopomer. In addition to giving the rovibrational constants for each state measured, the power series expansion constants are also given and compared with those of the other deuterium cyanide isotopomers. The D12C14N laser transitions are verified as arising from the consequences of the Coriolis interaction between the J=21 levels of the 0202 and 091e0 states. 相似文献
117.
Transmission characteristics of dichroic filters measured by THz time-domain spectroscopy 总被引:1,自引:0,他引:1
C. Winnewisser F. Lewen H. Helm 《Applied Physics A: Materials Science & Processing》1998,66(6):593-598
Received: 19 March 1998/Accepted: 23 March 1998 相似文献
118.
Monomer counterrotations and tunneling splitting in CO dimer by data of millimeter wave spectroscopy
B. S. Dumesh V. A. Panfilov L. A. Surin D. N. Furzikov G. Winnewisser 《JETP Letters》2004,80(2):98-102
Analysis of the rotational spectrum of the molecular dimer (CO)2 measured in the millimeter wave range has been performed and four new rotational states are revealed. Three of these states are characterized by almost free rotations of both monomers in the dimer. These states have approximately the same first term σ in the expansion of the rotational energy in powers of the rotational angular momentum J for various values of the momentum projections on the dimer axis (K=0, 1, 2) and various rotational constants B. The intrinsic rotational angular momenta of CO dimers, j1=j2=1, are determined from the σ value. In addition, a state with K=2 is found which corresponds to one of the known shape isomers of (CO)2. The values of the tunneling splitting for each of the new states are determined. The results indicate that previous data on the suppressed tunneling are determined by the asymmetry of internal rotations in the CO monomers rather than by the K value. 相似文献
119.
Winnewisser BP Winnewisser M Medvedev IR Behnke M De Lucia FC Ross SC Koput J 《Physical review letters》2005,95(24):243002
We have made energy-momentum maps for the experimental end-over-end rotational energy and the two-dimensional bending vibrational energy, both of which confirm the dominating effects of nontrivial quantum monodromy in cyanogen isothiocyanate. Accidental resonances in the rotational spectra yield accurate intervals between bending states. 相似文献
120.
R.Wellington Davis A.G. Robiette M.C.L. Gerry E. Bjarnov G. Winnewisser 《Journal of Molecular Spectroscopy》1980,81(1):93-109
Pure rotational spectra of H13COOH, HC18OOH, and HCO18OH have been measured in the frequency region 8–185 GHz. Analysis of the spectra has given improved rotational constants and quartic and sextic centrifugal distortion constants. The quartic distortion constants have been combined with previously published distortion constants of four other isotopic species, and with the vibrational wavenumbers of seven isotopic species, to produce a refined harmonic force field. An improved substitution structure and the ground state average structure have been obtained. Some unmeasured transition frequencies which may be of importance in radioastronomy are also presented. 相似文献