Absorption of x-rays by lead glasses and lead barium glasses
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چکیده
منابع مشابه
Structural studies of lead aluminate glasses
Lead aluminate melts were quenched rapidly with a roller quencher and bulk glasses were formed over a composition range from 72.5 to 80.0 mol% PbO. Pulsed neutron diffraction, Al MAS NMR and Raman spectroscopy were used to study the structure of a series of these glasses. The results show that in the glasses the aluminium is four coordinated by oxygen across the compositional range, with a bond...
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A new lead fluoroborate glass (PbO-PbF2-B2O3) doped with ytterbium (Yb:PbFB) is presented. Samples with different concentrations of Yb3+ were produced and had their emission cross-sections, fluorescence lifetimes and minimum pump intensities determined. They have high refractive index of 2.2 and a density of 4.4 g/cm3. For a doping level of 1.153x1020 ions/cm3, the fluorescence lifetime, after ...
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards
سال: 1936
ISSN: 0091-0635
DOI: 10.6028/jres.016.012