Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Positive ion species and degree of dissociation of SO2 in dc discharges of He-SO2 mixtures.

Authors
Kuehn-DG; Chanin-LM
Source
J Appl Physi 1972 Feb; 43(2):339-344
NIOSHTIC No.
10010340
Abstract
Positive ion sampling measurements have been conducted on dc discharges containing 0.33% and 1.2% SO2 in He. Ions from SO2 include S+, O+, O2+, SO+, SO2+, and SO3+. Studies were made of the functional dependencies on gas pressure and discharge current. Interpretation of these results led to the conclusion that appreciable dissociation of SO2 occurred within the discharge. This hypothesis was confirmed by sampling the neutral gas components with and without a discharge. Measurements show the degree of dissociation increases with discharge current and reaches a limiting value which is relatively constant over the pressure range studied. For 1.2% SO2 in He, the degree of dissociation can become as large as 80% at 6.5 Torr and for a 20-mA discharge current. The results moreover suggest that an appreciable fraction of the dissociated particles is in the form of SO.
Keywords
Mining-industry; Sulfur-compounds; Sulfur-oxides; Ionization
CODEN
JAPIAU
Publication Date
19720201
Document Type
OP; Journal Article
Fiscal Year
1972
NTIS Accession No.
NTIS Price
Identifying No.
OP 60-72
Issue of Publication
2
ISSN
0021-8979
NIOSH Division
TCRC
Source Name
Journal of Applied Physics
State
MN
TOP