On the Optical Absorption of Thin BaO Film in the Ultraviolet Region

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概要

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• By measuring the optical transmittance of evaporated BaO film in vacuum, it has been found that the threshold for absorption occurs at 3200Å and the second rapid rise in absorption begins at 2500Å approximately. Two absorption bands have been observed in the region ranging from 2500Å to 3200Å: one has a maximum at 2800Å and the other has a maximum at about 3000Å. The latter absorption hand is new and has not been observed so far by the method of optical transmittance, though its presence has been suggested by the photoconduction of BaO single crystal. The influence of oxygen vapour upon the absorption bands has also been investigated, and it has been observed that when thin BaO film was exposed to oxygen, the absorption bands in the region 2500Å-3200Å vanished out suddenly and the film became transparent in the region of wavelengths longer than 2500Å.

• 社団法人日本物理学会の論文
• 1954-12-25

著者

• Tomotika Tosiro

  Physical Institute Faculty Of Science University Of Kyoto

• TAKAZAWA Kazunori

  Physical Institute, Faculty of Science, University of Kyoto

• Takazawa Kazunori

  Physical Institute Faculty Of Science University Of Kyoto

関連論文

• On the Optical Absorption of Thin BaO Film in the Ultraviolet Region

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