NDLI: Oxygen Isotope Processes and Transfer Reactions

Content Provider	Springer Nature Link
Author	Mauersberger, K. Krankowsky, D. Janssen, C.
Copyright Year	2003
Abstract	A unique kinetic isotope effect has been found in the formation process of ozone molecules. Isotope enrichments of about 10% above statistically expected values were first discovered in atmospheric isotopomers $^{49}$O$_{3}$ and $^{50}$O$_{3}$ and later in many other molecular combinations. Most recently the source of this effect was identified through measurement of isotope-specific ozone formation rate coefficients which show a large variability of over 50%. Ozone molecule formation is a complex process since different reaction channels contribute to a specific isotopomer. In addition, fast oxygen isotope exchange reactions determine the abundance of atomic oxygen participating in ozone formation. The isotope enrichments observed are both pressure and temperature-dependent and they decrease at pressures above 100 mbar and toward lower temperatures. Ozone possesses not only one of the most unusual isotope anomalies, it also serves as a mediator by transferring heavy oxygen from the O$_{2}$ reservoir to other species. Stratospheric isotope composition of CO$_{2}$ has been recently measured with high accuracy and a pronounced isotopic signature was found which shows that $^{17}$O is preferentially transferred from O$_{3}$ into CO$_{2}$.
Starting Page	265
Ending Page	279
Page Count	15
File Format	PDF
ISSN	00386308
Journal	Space Science Reviews
Volume Number	106
Issue Number	1-4
e-ISSN	15729672
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2003-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Astronomy, Astrophysics and Cosmology Extraterrestrial Physics, Space Sciences
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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