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It is also used as a green phosphor in projection CRTs, though its drawback is marked lowering of efficiency at higher temperatures. Variants include, for example, using praseodymium instead of terbium ( CAS registry number 68609-42-7 , EINECS number 271-826-9), or using a mixture of dysprosium and terbium for doping (CAS number 68609-40-5 ...
4, can be used as a phosphor. [39] Gallium also forms sulfides in lower oxidation states, such as gallium(II) sulfide and the green gallium(I) sulfide, the latter of which is produced from the former by heating to 1000 °C under a stream of nitrogen. [37]: 94 The other binary chalcogenides, Ga 2 Se 3 and Ga 2 Te 3, have the zincblende structure.
Diphosphorus is an inorganic chemical with the chemical formula P 2.Unlike nitrogen, its lighter pnictogen neighbor which forms a stable N 2 molecule with a nitrogen to nitrogen triple bond, phosphorus prefers a tetrahedral form P 4 because P-P pi-bonds are high in energy.
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A phoswich [1] ("phosphor sandwich") is a combination of scintillators with dissimilar pulse shape characteristics optically coupled to each other and to a common PMT (or PMTs). Pulse shape analysis distinguishes the signals from the two scintillators, identifying in which scintillator the event occurred.
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P 2 O 5 crystallizes in at least four forms. The most familiar polymorph (see figure) comprises molecules of P 4 O 10.The other polymorphs are polymeric, but in each case the phosphorus atoms are bound by a tetrahedron of oxygen atoms, one of which forms a terminal P=O bond.