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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/49549
Record Status
Checked
Record Id
49549
Title
An infra-red filter radiometer for atmospheric cluster-ion detection
Contributors
KL Aplin (STFC Rutherford Appleton Lab.)
,
RA McPheat (STFC Rutherford Appleton Lab.)
Abstract
Motivated by the detection of infra-red absorption bands from atmospheric cluster- ions in laboratory experiments, a narrowband filter radiometer has been constructed for ion detection in the atmosphere. It uses a filter centred on 9.15 micron wavelength with 5% bandwidth, protected by a diamond-like carbon coated germanium auxiliary filter, and fitted to a standard pyrradiometer. A sensitivity of (29.3±0.1) V/(Wm-2) has been determined in a laboratory calibration using a blackbody source. Atmospheric experiments show that the filter radiometer, when used with a stable, low-noise amplifier, can respond to cluster-ion fluctuations. The filter radiometer's sensitivity to atmospheric ion changes is (0.47 ± 0.05) (mWm-2)/(ions cm-3).
Organisation
SSTD
,
STFC
Keywords
clusters
,
Physics
,
Natural environment
,
atmospheric electricity
,
cosmic rays
,
ionisation
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Rev Sci Instrum
79 (2008): 106107.
doi:/10.1063/1.3002428
Aplin&McPheatRSI_Preprint.pdf
2008
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