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The Mechanism of Phosphorescence in Crystal Phosphors

The Mechanism of Phosphorescence in Crystal Phosphors Starting at the bottom of the E layer (approximately 80 km) where the effect of dissociation and ionization of the normal con. stituents of the atmosphere first becomes apparent, consideration has been given to three different alternatives under which an ionized layer can be formed. Case 1.-Formation of the well-known Chapman layer.' A parabolic layer is formed under the influence of monochromatic radiation causing ionization (or dissociation) of a particular atmospheric constituent supposedly responsible for this layer formation. The temperature and molecular weight remain con- stant over the region of investigation. Case 2.-Formation of a rather well-pronounced layer in a narrow region of altitude, a formation which is more in accordance with the findings of the radio scientists. The theory has been worked out by Nicolet2 under the assumption that the molecular weight remains constant, and that the temperature increases with height. Case 3.-Formation of a well-defined E layer, where the elec- tron density increases to a maximum, then decreases with altitude to a minimum, and increases again slowly, building up for the formation of the F1 layer. This continuous layer formation has been found here under the assumptions that the temperature increases with altitude and, furthermore, that http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review American Physical Society (APS)

The Mechanism of Phosphorescence in Crystal Phosphors

Curie, Daniel
Physical Review , Volume 90 (1) – Apr 1, 1953
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Publisher
American Physical Society (APS)
Copyright
Copyright © 1953 The American Physical Society
ISSN
1536-6065
DOI
10.1103/PhysRev.90.154
Publisher site
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Abstract

Starting at the bottom of the E layer (approximately 80 km) where the effect of dissociation and ionization of the normal con. stituents of the atmosphere first becomes apparent, consideration has been given to three different alternatives under which an ionized layer can be formed. Case 1.-Formation of the well-known Chapman layer.' A parabolic layer is formed under the influence of monochromatic radiation causing ionization (or dissociation) of a particular atmospheric constituent supposedly responsible for this layer formation. The temperature and molecular weight remain con- stant over the region of investigation. Case 2.-Formation of a rather well-pronounced layer in a narrow region of altitude, a formation which is more in accordance with the findings of the radio scientists. The theory has been worked out by Nicolet2 under the assumption that the molecular weight remains constant, and that the temperature increases with height. Case 3.-Formation of a well-defined E layer, where the elec- tron density increases to a maximum, then decreases with altitude to a minimum, and increases again slowly, building up for the formation of the F1 layer. This continuous layer formation has been found here under the assumptions that the temperature increases with altitude and, furthermore, that

Journal

Physical Review – American Physical Society (APS)

Published: Apr 1, 1953

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