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ALMA Memo #273

FTS Measurements of Eccosorb MF112 at Room Temperature and 5 K from 300 GHz to 2.4 THz

G.A. Ediss [1], A.R. Kerr [1], H. Moseley [2], K.P. Stewart [2]

September 8, 1999

Keywords:

Measurements have been made of a 19.7 mil thick sample of Emerson and Cumming absorber MF112. The sample was machined from a recently purchased (9/98) rod of 1 inch diameter stock material. Transmittance spectra were taken with the sample at room temperature and cooled to 5 K with a Brucker IFS113V spectrometer. They are given in Figure 1 over the range 300 GHz to 2.4 THz (10-80 wavenumbers). These were normalized with background scans taken with no sample present. In both cases, the sample was physically removed from the beam, in the 5 K case within the sample Dewar, so that instrumental effects of the Dewar windows were also removed.

[1] NRAO
[2] Goddard Space Flight Center


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Last modified: 08 September, 1999

kweather@nrao.edu