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Absorption Bands of Ammonia Gas in the Visible

Badger, Richard M. (1930) Absorption Bands of Ammonia Gas in the Visible. Physical Review, 35 (9). pp. 1038-1046. ISSN 0031-899X.

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The article describes an investigation of the absorption spectrum of ammonia gas in the visible region. At 5490A an absorption region was found which was too weak for a complete investigation with the means at hand. On a second band at 6474A measurements on 57 lines are given, and the structure of the band is discussed. These two bands are the fifth and fourth overtones of an ammonia band at 3μ. Some interesting alternations of intensity are pointed out, and comparison is made with other ammonia bands of the same harmonic series. Some features of other portions of the ammonia spectrum are discussed in connection with the bands here investigated.

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Additional Information:©1930 The American Physical Society. Received 4 March 1930. At this point the author wishes to express his thanks to Professor J. Anderson of the Mount Wilson Solar Observatory of the Carnegie Institution for the loan of the ten-foot grating which made the investigation possible; and to Dr. Edison Pettit of the same institution for the microphotometer measurements.
Issue or Number:9
Record Number:CaltechAUTHORS:BADpr30
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10480
Deposited By: Archive Administrator
Deposited On:08 May 2008
Last Modified:03 Oct 2019 00:10

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