Isotopic fractionation in the formation of ozone and of carbon dioxide

Bates, D. R.

College Park, Md. : American Institute of Physics (AIP)
Published 1990
ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
Chemistry and Pharmacology
Notes:
An explanation is proposed for the observed enrichment of the symmetric isomer OXO of heavy ozone (X being used to denote a heavy O atom). This is that the energized complex may undergo a flip in which one of the end atoms ceases to be effectively bound to the central atom and becomes effectively bound to the other end atom. The measured [OXO]:[OOX] ratio is reproduced if the flip frequency is the same as the dissociation frequency. Calculations are carried out on the variation of the enhancement with the ambient gas density. It is reasoned that the enhancement observed in the stratosphere is that arising in termolecular association and that the lower values obtained in laboratory experiments are artifacts. The measured isotopic enrichment of carbon dioxide may arise from termolecular association O+CO+CO→CO2+CO, from enriched OXO* that is generated in another association process or from both. The apparent scatter in the results is much greater than would be expected from the precision of the measurements. It is suggested that this may be an artifact (similar in origin to those for ozone).
Type of Medium:
Electronic Resource
URL:
_version_ 1798289746669076480
autor Bates, D. R.
book_url http://dx.doi.org/10.1063/1.459262
datenlieferant nat_lic_papers
hauptsatz hsatz_simple
identnr NLZ218860536
issn 1089-7690
journal_name The Journal of Chemical Physics
materialart 1
notes An explanation is proposed for the observed enrichment of the symmetric isomer OXO of heavy ozone (X being used to denote a heavy O atom). This is that the energized complex may undergo a flip in which one of the end atoms ceases to be effectively bound to the central atom and becomes effectively bound to the other end atom. The measured [OXO]:[OOX] ratio is reproduced if the flip frequency is the same as the dissociation frequency. Calculations are carried out on the variation of the enhancement with the ambient gas density. It is reasoned that the enhancement observed in the stratosphere is that arising in termolecular association and that the lower values obtained in laboratory experiments are artifacts. The measured isotopic enrichment of carbon dioxide may arise from termolecular association O+CO+CO→CO2+CO, from enriched OXO* that is generated in another association process or from both. The apparent scatter in the results is much greater than would be expected from the precision of the measurements. It is suggested that this may be an artifact (similar in origin to those for ozone).
package_name American Institute of Physics (AIP)
publikationsjahr_anzeige 1990
publikationsjahr_facette 1990
publikationsjahr_intervall 8009:1990-1994
publikationsjahr_sort 1990
publikationsort College Park, Md.
publisher American Institute of Physics (AIP)
reference 93 (1990), S. 8739-8744
search_space articles
shingle_author_1 Bates, D. R.
shingle_author_2 Bates, D. R.
shingle_author_3 Bates, D. R.
shingle_author_4 Bates, D. R.
shingle_catch_all_1 Bates, D. R.
Isotopic fractionation in the formation of ozone and of carbon dioxide
An explanation is proposed for the observed enrichment of the symmetric isomer OXO of heavy ozone (X being used to denote a heavy O atom). This is that the energized complex may undergo a flip in which one of the end atoms ceases to be effectively bound to the central atom and becomes effectively bound to the other end atom. The measured [OXO]:[OOX] ratio is reproduced if the flip frequency is the same as the dissociation frequency. Calculations are carried out on the variation of the enhancement with the ambient gas density. It is reasoned that the enhancement observed in the stratosphere is that arising in termolecular association and that the lower values obtained in laboratory experiments are artifacts. The measured isotopic enrichment of carbon dioxide may arise from termolecular association O+CO+CO→CO2+CO, from enriched OXO* that is generated in another association process or from both. The apparent scatter in the results is much greater than would be expected from the precision of the measurements. It is suggested that this may be an artifact (similar in origin to those for ozone).
1089-7690
10897690
American Institute of Physics (AIP)
shingle_catch_all_2 Bates, D. R.
Isotopic fractionation in the formation of ozone and of carbon dioxide
An explanation is proposed for the observed enrichment of the symmetric isomer OXO of heavy ozone (X being used to denote a heavy O atom). This is that the energized complex may undergo a flip in which one of the end atoms ceases to be effectively bound to the central atom and becomes effectively bound to the other end atom. The measured [OXO]:[OOX] ratio is reproduced if the flip frequency is the same as the dissociation frequency. Calculations are carried out on the variation of the enhancement with the ambient gas density. It is reasoned that the enhancement observed in the stratosphere is that arising in termolecular association and that the lower values obtained in laboratory experiments are artifacts. The measured isotopic enrichment of carbon dioxide may arise from termolecular association O+CO+CO→CO2+CO, from enriched OXO* that is generated in another association process or from both. The apparent scatter in the results is much greater than would be expected from the precision of the measurements. It is suggested that this may be an artifact (similar in origin to those for ozone).
1089-7690
10897690
American Institute of Physics (AIP)
shingle_catch_all_3 Bates, D. R.
Isotopic fractionation in the formation of ozone and of carbon dioxide
An explanation is proposed for the observed enrichment of the symmetric isomer OXO of heavy ozone (X being used to denote a heavy O atom). This is that the energized complex may undergo a flip in which one of the end atoms ceases to be effectively bound to the central atom and becomes effectively bound to the other end atom. The measured [OXO]:[OOX] ratio is reproduced if the flip frequency is the same as the dissociation frequency. Calculations are carried out on the variation of the enhancement with the ambient gas density. It is reasoned that the enhancement observed in the stratosphere is that arising in termolecular association and that the lower values obtained in laboratory experiments are artifacts. The measured isotopic enrichment of carbon dioxide may arise from termolecular association O+CO+CO→CO2+CO, from enriched OXO* that is generated in another association process or from both. The apparent scatter in the results is much greater than would be expected from the precision of the measurements. It is suggested that this may be an artifact (similar in origin to those for ozone).
1089-7690
10897690
American Institute of Physics (AIP)
shingle_catch_all_4 Bates, D. R.
Isotopic fractionation in the formation of ozone and of carbon dioxide
An explanation is proposed for the observed enrichment of the symmetric isomer OXO of heavy ozone (X being used to denote a heavy O atom). This is that the energized complex may undergo a flip in which one of the end atoms ceases to be effectively bound to the central atom and becomes effectively bound to the other end atom. The measured [OXO]:[OOX] ratio is reproduced if the flip frequency is the same as the dissociation frequency. Calculations are carried out on the variation of the enhancement with the ambient gas density. It is reasoned that the enhancement observed in the stratosphere is that arising in termolecular association and that the lower values obtained in laboratory experiments are artifacts. The measured isotopic enrichment of carbon dioxide may arise from termolecular association O+CO+CO→CO2+CO, from enriched OXO* that is generated in another association process or from both. The apparent scatter in the results is much greater than would be expected from the precision of the measurements. It is suggested that this may be an artifact (similar in origin to those for ozone).
1089-7690
10897690
American Institute of Physics (AIP)
shingle_title_1 Isotopic fractionation in the formation of ozone and of carbon dioxide
shingle_title_2 Isotopic fractionation in the formation of ozone and of carbon dioxide
shingle_title_3 Isotopic fractionation in the formation of ozone and of carbon dioxide
shingle_title_4 Isotopic fractionation in the formation of ozone and of carbon dioxide
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timestamp 2024-05-06T08:05:44.356Z
titel Isotopic fractionation in the formation of ozone and of carbon dioxide
titel_suche Isotopic fractionation in the formation of ozone and of carbon dioxide
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