On the vibrations of N2O trapped in solid para-hydrogen

Hu, S.-M.; Wan, Lei; Du, Jun-He; Xu, Gang; Deng, Wen-Ping; Wu, Long; Tian, Shi‐Kai; Chen, Yang

doi:10.1016/j.vibspec.2008.07.008

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…The connectivity of the atoms can be determined from the nitrous oxide absorption frequencies for this ν 3 vibrational mode. A shift of 24 cm −1 conclusively demonstrates that the 15 N 14 NO product is formed and 14 N 15 NO, which has a larger isotope shift of 40 cm −1 for this stretching mode, is not formed …”

Section: Resultsmentioning

confidence: 89%

“…A shift of 24 cm -1 conclusively demonstrates that the 15 N 14 NO product is formed and 14 N 15 NO, which has a larger isotope shift of 40 cm -1 for this stretching mode, is not formed. 24 The difference between isotopic ratio in the central nitrogen and the terminal nitrogen atoms is defined as the 15 N site preference in N 2 O. 3 This information derived from the distribution of 15 N within the gas phase N 2 O molecule reflects the possible sources and reaction mechanisms of N 2 O formation.…”

Section: ' Introductionmentioning

confidence: 99%

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Abiotic Mechanism for the Formation of Atmospheric Nitrous Oxide from Ammonium Nitrate

Rubasinghege

Scott

Stanier

et al. 2011

Environ. Sci. Technol.

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Nitrous oxide (N2O) is an important greenhouse gas and a primary cause of stratospheric ozone destruction. Despite its importance, there remain missing sources in the N2O budget. Here we report the formation of atmospheric nitrous oxide from the decomposition of ammonium nitrate via an abiotic mechanism that is favorable in the presence of light, relative humidity and a surface. This source of N2O is not currently accounted for in the global N2O budget. Annual production of N2O from atmospheric aerosols and surface fertilizer application over the continental United States from this abiotic pathway is estimated from results of an annual chemical transport simulation with the Community Multiscale Air Quality model (CMAQ). This pathway is projected to produce 9.3(+0.7/-5.3) Gg N2O annually over North America. N2O production by this mechanism is expected globally from both megacities and agricultural areas and may become more important under future projected changes in anthropogenic emissions.

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Section: Resultsmentioning

confidence: 89%

Section: ' Introductionmentioning

confidence: 99%

Abiotic Mechanism for the Formation of Atmospheric Nitrous Oxide from Ammonium Nitrate

Rubasinghege

Scott

Stanier

et al. 2011

Environ. Sci. Technol.

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“…The experimental setup was similar to those used by our group in previous experiments 13 and so is only briefly described here. The principal apparatus for infrared absorption spectroscopy was a Fourier transform (FT) spectrometer (Bruker IFS120 HR).…”

Section: Methodsmentioning

confidence: 99%

Electronic spectroscopy of ytterbium in a neon matrix

Lambo

Buchachenko

et al. 2012

The Journal of Chemical Physics

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The low-lying electronic states of Yb isolated in a solid Ne matrix are characterized through absorption and emission spectroscopy. The absorption spectra of matrix isolated Yb while pumped into its triplet states have been recorded for the first time and the 6s6p (3)P(J) → 5d6s (3)D(1, 2) transition frequencies obtained. Under matrix conditions, the structure of these states is found to be qualitatively the same as in the free atom, but the intersystem crossing rate is observed to be several orders of magnitude greater. A proposed explanation for this is curve crossings between the bound potential energy surface correlated to the 6s6p (1)P(1) state and the potential energy surfaces correlated to the 5d6s (3)D(1, 2) states in isolation. The potentials of the Yb·Ne dimer in its lowest electronic states are computed ab initio and used in a pairwise cluster model to explicitly demonstrate these curve crossings.

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