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The internal intensity ratio of Hα and of Dα

Hsueh, Chao-Wang (1948) The internal intensity ratio of Hα and of Dα. Physical Review, 74 (6). pp. 670-676. ISSN 0031-899X. doi:10.1103/PhysRev.74.670.

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A Geissler-Wood discharge tube was designed for use as the light source of Hα or Dα line. The tube was cooled in liquid air under low pressure to reveal the fine structure of the spectral lines. Four different separations, 7.6, 7.8, 8.0, and 8.2 mm, were used in the Fabry-Perot interferometer. Ten spectroscopic plates were measured for Hα and ten others for Dα. The internal intensity ratio of Hα and of Dα was found to be 0.808±0.004 and 0.803±0.003, respectively, as compared to the theoretical value of 0.806. This study indicates that the experimental value of the intensity ratio between the two main component groups agrees with the theoretical value when pure hydrogen or pure deuterium gas is used in the discharge tube and the discharge is at its maximum intensity.

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Additional Information:©1948 The American Physical Society. Received 25 April 1948. The author wishes to thank Professors W.V. Houston, I.S. Boewn, and D.M. Yost for their valuable advice.
Issue or Number:6
Record Number:CaltechAUTHORS:HSUpr48
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3717
Deposited By: Tony Diaz
Deposited On:30 Jun 2006
Last Modified:08 Nov 2021 20:11

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