Low temperature pressure broadening of NH3 by D2

We report experimentally measured cross sections for pressure broadening of ammonia inversion transitions by J=0, ortho-D2 at temperatures of 18-40 K. These measurements were made in a quasiequilibrium cell using the collisional cooling technique. Cross sections for broadening of the metastable (J,K...

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Published inThe Journal of chemical physics Vol. 120; no. 1; p. 129
Main Authors Willey, Daniel R, Timlin, Jr, Robert E, Ruggiero, Charles D, Sulai, Ibrahim A
Format Journal Article
LanguageEnglish
Published United States 01.01.2004
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Abstract We report experimentally measured cross sections for pressure broadening of ammonia inversion transitions by J=0, ortho-D2 at temperatures of 18-40 K. These measurements were made in a quasiequilibrium cell using the collisional cooling technique. Cross sections for broadening of the metastable (J,K)=(1, 1), (2, 2) and (3, 3) inversion transitions ranged from 67.5 A2 for (1, 1) at 20.0 K to 100.1 A2 for (3, 3) at 25.0 K. The J=0, ortho-D2 cross sections were found to be consistently larger than previously measured cross sections for low temperature broadening of NH3 by both He and H2.
AbstractList We report experimentally measured cross sections for pressure broadening of ammonia inversion transitions by J=0, ortho-D2 at temperatures of 18-40 K. These measurements were made in a quasiequilibrium cell using the collisional cooling technique. Cross sections for broadening of the metastable (J,K)=(1, 1), (2, 2) and (3, 3) inversion transitions ranged from 67.5 A2 for (1, 1) at 20.0 K to 100.1 A2 for (3, 3) at 25.0 K. The J=0, ortho-D2 cross sections were found to be consistently larger than previously measured cross sections for low temperature broadening of NH3 by both He and H2.
Author Timlin, Jr, Robert E
Ruggiero, Charles D
Willey, Daniel R
Sulai, Ibrahim A
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  givenname: Ibrahim A
  surname: Sulai
  fullname: Sulai, Ibrahim A
BackLink https://www.ncbi.nlm.nih.gov/pubmed/15267269$$D View this record in MEDLINE/PubMed
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Snippet We report experimentally measured cross sections for pressure broadening of ammonia inversion transitions by J=0, ortho-D2 at temperatures of 18-40 K. These...
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Title Low temperature pressure broadening of NH3 by D2
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