A medium resolution ground based submillimeter spectrometer

Details A medium resolution ground based submillimeter spectrometer A medium resolution ground based submillimeter spectrometer

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994inpht..35..321m&link_type=abstract

Infrared Physics & Technology, Volume 35, Issue 2-3, p. 321-329.

Physics

11

Scientific paper

We present a Submillimeter spectrometer based on a cooled scanning Fabry-Pérot working at 1.4 K temperature and using gold inductive grids deposited on quartz substrates as reflective faces. The detection is achieved by an array of 24 silicon bolometers cooled at 0. l K by an adiabatic demagnetization refrigerator. This spectrometer will be operated at the focus of the 10 m ground based antenna of the Caltech Submillimeter Observatory and is the precursor of balloon borne or space instruments. It is mainly dedicated to high redshift galaxy observations, and especially to the CII line (158 μm) studies in these objects. The observations will be carried out in two atmospheric windows centered on 350 and 450 μm, and the spectrometer will be able to detect galaxies at a redshift of about 1-2 with a FIR luminosity of a few l012Lsolar.

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