A molecular beam mass spectrometric study of the formation and photolysis of C(lc)lO dimer
A study of the chlorine oxides present at temperatures and pressures typical of the Antarctic stratosphere was carried out. A series of low temperature flow reactors was constructed and used in conjunction with molecular beam mass spectrometric techniques to identify species and characterize their k...
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1992
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ftnasantrs:oai:casi.ntrs.nasa.gov:19920015424 2023-05-15T13:37:34+02:00 A molecular beam mass spectrometric study of the formation and photolysis of C(lc)lO dimer Greene, Frank T. Robaugh, David A. Unclassified, Unlimited, Publicly available Mar 6, 1992 application/pdf http://hdl.handle.net/2060/19920015424 unknown Document ID: 19920015424 Accession ID: 92N24667 http://hdl.handle.net/2060/19920015424 No Copyright CASI GEOPHYSICS NASA-CR-190259 NAS 1.26:190259 MRI-A/R9316.FR 1992 ftnasantrs 2019-07-21T09:00:10Z A study of the chlorine oxides present at temperatures and pressures typical of the Antarctic stratosphere was carried out. A series of low temperature flow reactors was constructed and used in conjunction with molecular beam mass spectrometric techniques to identify species and characterize their kinetic behavior at temperatures of -20 to -70 C and pressures of from 30 to 130 Torr. It was found that the gas phase chlorine-oxygen system was quite complex at low temperatures. ClO dimer was identified and found to be thermodynamically very stable under stratospheric conditions. It was also found that any system which contained ClO also contained a larger oxide. The oxide was identified as Cl2O3. A survey of possible higher oxides, which have been postulated as possible chlorine sinks in the stratosphere, was also carried out. The rate of formation of ClO dimer was measured as a function of temperature and pressure. Measurements were made of both the decay of ClO and the formation of the dimer. By comparing these rates it was determined that virtually all of the ClO was converted to the dimer under stratospheric conditions, and that the other ClO reactions were not important under these conditions. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic The Antarctic |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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topic |
GEOPHYSICS |
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GEOPHYSICS Greene, Frank T. Robaugh, David A. A molecular beam mass spectrometric study of the formation and photolysis of C(lc)lO dimer |
topic_facet |
GEOPHYSICS |
description |
A study of the chlorine oxides present at temperatures and pressures typical of the Antarctic stratosphere was carried out. A series of low temperature flow reactors was constructed and used in conjunction with molecular beam mass spectrometric techniques to identify species and characterize their kinetic behavior at temperatures of -20 to -70 C and pressures of from 30 to 130 Torr. It was found that the gas phase chlorine-oxygen system was quite complex at low temperatures. ClO dimer was identified and found to be thermodynamically very stable under stratospheric conditions. It was also found that any system which contained ClO also contained a larger oxide. The oxide was identified as Cl2O3. A survey of possible higher oxides, which have been postulated as possible chlorine sinks in the stratosphere, was also carried out. The rate of formation of ClO dimer was measured as a function of temperature and pressure. Measurements were made of both the decay of ClO and the formation of the dimer. By comparing these rates it was determined that virtually all of the ClO was converted to the dimer under stratospheric conditions, and that the other ClO reactions were not important under these conditions. |
format |
Other/Unknown Material |
author |
Greene, Frank T. Robaugh, David A. |
author_facet |
Greene, Frank T. Robaugh, David A. |
author_sort |
Greene, Frank T. |
title |
A molecular beam mass spectrometric study of the formation and photolysis of C(lc)lO dimer |
title_short |
A molecular beam mass spectrometric study of the formation and photolysis of C(lc)lO dimer |
title_full |
A molecular beam mass spectrometric study of the formation and photolysis of C(lc)lO dimer |
title_fullStr |
A molecular beam mass spectrometric study of the formation and photolysis of C(lc)lO dimer |
title_full_unstemmed |
A molecular beam mass spectrometric study of the formation and photolysis of C(lc)lO dimer |
title_sort |
molecular beam mass spectrometric study of the formation and photolysis of c(lc)lo dimer |
publishDate |
1992 |
url |
http://hdl.handle.net/2060/19920015424 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
CASI |
op_relation |
Document ID: 19920015424 Accession ID: 92N24667 http://hdl.handle.net/2060/19920015424 |
op_rights |
No Copyright |
_version_ |
1766094318894841856 |