211 pp.
211 pp.
| 2731 K 211 pp. | |
| View Document | ||
| Title | Far Infrared Spectrometry of the Cosmic Background Radiation | |
| Author(s) | Mather, J. C. | |
| Publication Date | January 1974 | |
| Report Number | LBL--2258 | |
| Unique Identifier | ACC0461 | |
| Other Numbers | OSTI ID: 4309827 | |
| Research Org | University of California Berkeley (USA); Lawrence Berkeley Lab (LBL) [Lawrence Berkeley National Laboratory (LBNL) | |
| Contract No | W-7405-ENG-48 | |
| Sponsoring Org | U.S. Atomic Energy Commission (AEC) | |
| Other Information | Ph.D. Thesis | |
| Subject | N56600 -- Physics (Astrophysics & Cosmology) -- Cosmology; Cosmology -- Background Radiation; Universe -- Infrared Radiation; Infrared Spectra; Radiation Detectors | |
| Keywords | Cosmic Radiation | |
| Related Web Pages | John C. Mather, the Big Bang, and the COBE | |
| Abstract | I describe two experiments to measure the cosmic background radiation near 1 mm wavelength. The first was a ground-based search for spectral lines, made with a Fabry-Perot interferometer and an InSb detector. The second is a measurement of the spectrum from 3 to 18 cm{sup -1}, made with a balloon-borne Fourier transform spectrometer. It is a polarizing Michelson interferometer, cooled in liquid helium, and operated with a germanium bolometer. I give the theory of operation, construction details, and experimental results. The first experiment was successfully completed but the second suffered equipment malfunction on its first flight. I describe the theory of Fourier transformations and give a new understanding of convolutional phase correction computations. I discuss for infrared bolometer calibration procedures, and tabulate test results on nine detectors. I describe methods of improving bolometer sensitivity with immersion optics and with conductive film blackening. | |
| 2731 K 211 pp. | |
| View Document | ||
