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Formation of Highly...
Formation of Highly Rovibrationally Excited Ammonia from Dissociative Recombination of NH4+
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- Andersson, Patrik U, 1970 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry
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- Öjekull, Jenny, 1973 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry
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- Pettersson, Jan B. C., 1962 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry
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- Markovic, Nikola, 1961 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Hellberg, Fredrik (author)
- Stockholms universitet,Fysikum
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- Thomas, Richard D. (author)
- Stockholms universitet,Fysikum
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- Ehlerding, Anneli (author)
- Stockholms universitet,Fysikum
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- Österdahl, F (author)
- Stockholms universitet,Stockholm University
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- Zhaunerchyk, Vitali (author)
- Stockholms universitet,Fysikum
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- Geppert, Wolf D. (author)
- Stockholms universitet,Fysikum
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- af Ugglas, Magnus (author)
- Stockholms universitet,Fysikum
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- Larsson, Mats (author)
- Stockholms universitet,Fysikum
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- Uggerud, E. (author)
- Universitetet i Oslo,University of Oslo
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Danared, H (author)
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Källberg, A (author)
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(creator_code:org_t)
- 2010-08-06
- 2010
- English.
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In: Journal of Physical Chemistry Letters. - : American Chemical Society (ACS). - 1948-7185. ; 1:17, s. 2519-2523
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Abstract
Subject headings
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- The internal energy distribution of ammonia formed in the dissociative recombination (DR) of NH4+ with electrons has been studied by an imaging technique at the ion storage ring CRYRING. The DR process resulted in the formation of NH3 + H (0.90 ± 0.01), with minor contributions from channels producing NH2 + H2 (0.05 ± 0.01) and NH2 + 2H (0.04 ± 0.02). The formed NH3 molecules were highly internally excited, with a mean rovibrational energy of 3.3 ± 0.4 eV, which corresponds to 70% of the energy released in the neutralization process. The internal energy distribution was semiquantitatively reproduced by ab initio direct dynamics simulations, and the calculations suggested that the NH3 molecules are highly vibrationally excited while rotational excitation is limited. The high internal excitation and the translational energy of NH3 and H will influence their subsequent reactivity, an aspect that should be taken into account when developing detailed models of the interstellar medium and ammonia-containing plasmas.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Keyword
- storage ring
- ammonia
- imaging technique
- internal energy
- ammonium ion
- dissociative recombination
- direct dynamics
- dissociative recombination; ammonia; ammonium ion; storage ring; imaging technique; internal energy; direct dynamics
- NATURAL SCIENCES
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Andersson, Patri ...
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Öjekull, Jenny, ...
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Pettersson, Jan ...
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Markovic, Nikola ...
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Hellberg, Fredri ...
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Thomas, Richard ...
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show more...
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Ehlerding, Annel ...
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Österdahl, F
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Zhaunerchyk, Vit ...
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Geppert, Wolf D.
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af Ugglas, Magnu ...
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Larsson, Mats
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Uggerud, E.
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Danared, H
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Källberg, A
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
- Articles in the publication
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Journal of Physi ...
- By the university
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Chalmers University of Technology
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University of Gothenburg
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Stockholm University