Measurements of 18O-Enriched Ozone Isotopomer Abundances Using High-Resolution Fourier Transform Far-IR Spectroscopy

Larsen, R. Wugt; Larsen, N. W.; Nicolaisen, F.M.; Sørensen, Georg; Beukes, J.A.

doi:10.1006/jmsp.2000.8059

Cited by 12 publications

(31 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(4) (Anderson et al, 1989). Similar observations were performed by Christensen et al (1996), Larsen et al (2000) and Janssen et al (1999) We will show that all these results are a possible consequence of the isotopic indistinguishibility.…”

Section: Data Basissupporting

confidence: 81%

“…Measured ratios are from Janssen et al (1999) Reactions Calculated Ratio Measured y = 0.5 y = 0. Anderson et al (1989) and also different from Larsen et al (2000). Since the determinations of Janssen et al, (1999) have been obtained under the same experimental conditions than those for the individual rate constants reported by Mauersberger et al (1999), the calculations were performed using the parameters determined in Sect.…”

Section: Non Mass-dependent Fractionation In Ozone Isotopomersmentioning

confidence: 99%

See 1 more Smart Citation

Ozone isotopic composition: an angular effect in scattering processes?

Robert

Camy‐Peyret

2001

Ann. Geophys.

View full text Add to dashboard Cite

Abstract.The ratio of the differential scattering cross sections involving distinguishable and indistinguishable isotopes may exhibit non-mass dependent angular variations. A numerical application of this hypotheses to the ozone reaction rates reproduces some of the results observed in laboratory experiments. This theory could be tested through a cross beam experiment where the isotopic composition of the scattered products is recorded as a function of their scattering angles.

show abstract

Section: Data Basissupporting

confidence: 81%

Section: Non Mass-dependent Fractionation In Ozone Isotopomersmentioning

confidence: 99%

Ozone isotopic composition: an angular effect in scattering processes?

Robert

Camy‐Peyret

2001

Ann. Geophys.

View full text Add to dashboard Cite

show abstract

“…The average value of n(Air) in previous studies of 13 lines (4-7) from the pure rotational band predominantly with J ≤ 10 is 0.74 (10). However, great care should be taken in using average temperature exponents in atmospheric modeling studies and measurements of the concentration profile of ozone in the atmosphere.…”

Section: B Temperature Exponents Nmentioning

confidence: 93%

“…In Ref. (10) we have shown that thermal radiation from sources other than the spectrometer source, e.g., radiation from the gas sample itself, must be considered, if significant errors in intensity measurements are to be avoided. This is important in order to determine the partial pressure of ozone from observed linestrengths (see Section 3).…”

Section: Methodsmentioning

confidence: 99%

Determination of Self-, Air-, and Oxygen-Broadening Coefficients of Pure Rotational Absorption Lines of Ozone and of Their Temperature Dependencies

Larsen

Nicolaisen

Sørensen

2001

Journal of Molecular Spectroscopy

Self Cite

View full text Add to dashboard Cite

“…For O 3 , the central and terminal O atoms can be distinguished with suitable techniques226272829. In these cases, statistical anti-clumping only occurs when the indistinguishable terminal O atoms are involved (Table 1).…”

Section: Origin Of the Statistical Negative Clumped Isotope Signaturesmentioning

confidence: 99%

Statistical clumped isotope signatures

Röckmann

Popa

Krol

et al. 2016

Sci Rep

View full text Add to dashboard Cite

High precision measurements of molecules containing more than one heavy isotope may provide novel constraints on element cycles in nature. These so-called clumped isotope signatures are reported relative to the random (stochastic) distribution of heavy isotopes over all available isotopocules of a molecule, which is the conventional reference. When multiple indistinguishable atoms of the same element are present in a molecule, this reference is calculated from the bulk (≈average) isotopic composition of the involved atoms. We show here that this referencing convention leads to apparent negative clumped isotope anomalies (anti-clumping) when the indistinguishable atoms originate from isotopically different populations. Such statistical clumped isotope anomalies must occur in any system where two or more indistinguishable atoms of the same element, but with different isotopic composition, combine in a molecule. The size of the anti-clumping signal is closely related to the difference of the initial isotope ratios of the indistinguishable atoms that have combined. Therefore, a measured statistical clumped isotope anomaly, relative to an expected (e.g. thermodynamical) clumped isotope composition, may allow assessment of the heterogeneity of the isotopic pools of atoms that are the substrate for formation of molecules.

show abstract

Measurements of 18O-Enriched Ozone Isotopomer Abundances Using High-Resolution Fourier Transform Far-IR Spectroscopy

Cited by 12 publications

References 14 publications

Ozone isotopic composition: an angular effect in scattering processes?

Ozone isotopic composition: an angular effect in scattering processes?

Determination of Self-, Air-, and Oxygen-Broadening Coefficients of Pure Rotational Absorption Lines of Ozone and of Their Temperature Dependencies

Statistical clumped isotope signatures

Contact Info

Product

Resources

About