Training of Instrumentalists and Development of New Technologies on SOFIA (2009)
Erickson, Edwin F., Allamandola, Louis J., Baluteau, Jean-Paul, Becklin, Eric E., Bjoraker, Gordon, Burton, Michael, ...
This white paper is submitted to the Astronomy and Astrophysics 2010 Decadal Survey (Astro2010)1 Committee on the State of the Profession to emphasize the potential of the Stratospheric Observatory...
Concentration of the heavy isotope of carbon and measurement of its nuclear spin (2002)
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Heavy carbon was concentrated with a Hertz diffusion apparatus to a maximum of 50%,...
Experimental Tests of the Astrometric Precision Obtainable with a Ten Micron Interferometer. (2002)
Townes,Charles H., Sutton,E. C., Subramanian,S.
The purpose of this project was to test whether the relative positions of stars could be measured with an infrared spatial interferometer to high accuracy--that is, 0.1 seconds of arc or better. For...
Far Infrared Heterodyne Detection with Gallium Doped Germanium Photoconductors. (2002)
Townes,Charles H., Genzel,Reinhard
This contract has been directed at the examination of the bandwidth and sensitivity of semiconducting heterodyne detectors for far infrared radiation (FIR). Germanium detectors variously doped with...
INVESTIGATION OF THE USE OF MASERS IN THE INFRARED AND OPTICAL REGIONS. (1998)
Contents: Gas laser research; Interaction of an intense laser beam with matter.
Recent upgrades of the 10 micron interferometer have during 1997 been fully programmed, tested, and used. They provide improved tracking and stronger signals, and have been extensively used for new...
Further upgrades of the 10 micron interferometer have been made during 1998, tested, and used. The present system now provides improved tracking, stronger signals, and more precise infrared...
A Study of Atmospheric Seeing and Its Possible Improvement (1998)
Atmospheric density fluctuations which affect 'seeing' have been studied to examine details of their characteristics and ways of at least partial compensation. Work involved two 60 ft erectable...
Support of Infrared Spatial Interferometry. (1997)
This grant has supported the development of infrared interferometry, studies of atmospheric transmission and image distortion, and the resolution and study of stars and material surrounding them,...
A number of upgrades of the 10 micron interferometer have been made during the first nine months of this grant, and a limited number of measurements. Upgrades include new IR tracking cameras,...
Author Institution: Department of Physics, Columbia University
Microwave spectroscopy / C. H. Townes, A. L. Schawlow (1955)
Reimpresión en el año 1975
Mays, John Molteno., Townes, Charles H.
Two articles reprinted from the Journal of chemical physics, vol. 20, no. 11, November, 1952 and the Physical review, vol. 81, no. 6, March 15, 1951, respectively.
Stark effects of microwave spectroscopy, (1950)
Shulman, Robert Gerson., Townes, Charles H., Dailye, B. P.
R.G. Shulman's thesis, Columbia University.
Recent Work in Microwave Spectroscopy at Columbia University (1949)
Author Institution: Columbia University
Interpretation of Nuclear Quadrupole Effects in Terms of Molecular Bond Orbitals (1948)
Author Institution: Department of Physics, Columbia University
Concentration of the heavy isotope of carbon and measurement of its nuclear spin (1939)
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Heavy carbon was concentrated with a Hertz diffusion apparatus to a maximum of 50%,...