Abstract
Bose and Raha have reported1 that they had observed a diminution of the susceptibility of a chromic chloride solution and of other coloured paramagnetic solutions, when the solutions were exposed to concentrated visible light. They interpreted their result as due to the fact that, by the absorption of light, some of the metallic ions are transferred into excited states, in which they would have a lower magnetic moment than in the basic state. This would indicate that in the case of chromic chloride, one of the three electronic spins had been reversed, with respect to the other spins, in the transition.
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References
NATURE, 127, 520, April 4, 1931.
O. Specchia, Il Nuovo Cimento, 8, 179, 291; 1931.
C. J. Gorter, Arch. du Musée Teyler, 37, 182; 1932.
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GORTER, C. Influence of Light on Paramagnetic Susceptibility. Nature 130, 60 (1932). https://doi.org/10.1038/130060a0
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DOI: https://doi.org/10.1038/130060a0
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