Showing papers in "Journal of Applied Spectroscopy in 1969"
18 citations
TL;DR: The experimental data obtained in this investigation indicate that there is a relationship between the absorption bands corresponding to OH groups and the content of impurities requiring charge compensation in the crystals as mentioned in this paper.
Abstract: 1.
Study of the IR spectra of unannealed corundum crystals grown in a hydrogen-oxygen flame established that all such crystals have absorption bands corresponding to OH-group valence vibrations and hence do not differ in this respect from other crystals grown under analogous conditions.
2.
The experimental data obtained in this investigation indicate that there is a relationship between the absorption bands corresponding to OH groups and the content of impurities requiring charge compensation in the crystals.
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TL;DR: The phase method can be applied to other compounds, but the choice of molecules and vibrational levels is restricted by the need for the level to have two allowed IR transitions as mentioned in this paper.
Abstract: The phase method can be applied to other compounds, but the choice of molecules and vibrational levels is restricted by the need for the level to have two allowed IR transitions. Also, the use of the method is restricted by the availability of strong IR sources.
TL;DR: The concept of the degree of whiteness (W) as mentioned in this paper is used to describe the effect of bleaching on the blueness and brightness of the treated compounds, due to the intense blue f luorescence of these compounds.
Abstract: The bleaching effect accomplished by OB consists of an increase in the blueness and brightness of the treated mater ia l due to the intense blue f luorescence of these compounds. The concept of the degree of whiteness (W), which charac te r i zes the position of the test sample relat ive to an ideally white sample in the standard co lor imet r ie space, is used to descr ibe the bleaching effect in co lor imet ry . The empir ical r e l a tionship which gives the quantitative expression for the degree of whiteness takes both of these effects into account and has the fo rm [1]