In:
Geophysical Research Letters, American Geophysical Union (AGU), Vol. 20, No. 1 ( 1993-01-08), p. 21-24
Abstract:
One of the mechanisms that has been proposed to explain the phenomenon of sudden sodium layers (SSLs) in the upper atmosphere is dissociative attachment of electrons to sodium compounds such as NaHCO 3 and NaCO 3 . In this study, ab initio calculations have been used to estimate the reaction enthalpies (ΔH° 0 (NaX + e − → Na + X − )) for NaHCO 3 and NaCO 3 , which are found to be 72 ± 20 (0.75) and 21 ± 30 (0.22) kJmol −1 (eV), respectively. NaHCO 3 is then shown to be relatively stable above the mesopause. This property, together with its rather small threshold for dissociative electron attachment, makes NaHCO 3 a possible source of SSLs under certain conditions.
Type of Medium:
Online Resource
ISSN:
0094-8276
,
1944-8007
Language:
English
Publisher:
American Geophysical Union (AGU)
Publication Date:
1993
detail.hit.zdb_id:
2021599-X
detail.hit.zdb_id:
7403-2
SSG:
16,13
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