A PHOTOMULTIPLIER READ-OUT FOR THE BAUSCH AND LOMB 1.5 METER STIGMATIC SPECTROGRAPH
AIR FORCE SYSTEMS COMMAND SPACE SYSTEMS DIV LOS ANGELES CA
Pagination or Media Count:
A photomultiplier read-out for the Bausch and Lomb 1.5 meter stigmatic spectrograph is described. This modification utilizes nine photomultiplier tubes of the side window type which cover the spectral range between 2000 and 7000 A. Each Photomultiplier tube examines a spectral range of approximately 7A, and can cover a range of 1100 A. Details of the mounting, of the fine motion adjustment, and of an inexpensive regulated power supply for the photomultiplier tubes are described. The application of the istrument to determine the apparent gray-body surface temp rature indicates that for a 0.001 inch tungsten wire, electrically exploded by a capacitor charged to an initial voltage of 25,000 volts, the value is 8500 275 deg. K. Calibration of the instrument was achieved by the use of a National Bureau of Standards spectrally calibrated tungsten ribbon lamp.
- Electrical and Electronic Equipment
- Atomic and Molecular Physics and Spectroscopy