Eleven cyanoplatinate (II) salts have been studied under excitation with fast, charged particles. The salts were prepared via the barium compound, and crystals were grown from aqueous solutions. The formulae were determined by standard analytical procedures. Four of the salts were not previously described, and for two other salts information on the composition was lacking. Many of the salts are colorless and the luminescence is in most cases in the blue region. The measurements include light yield and decay time under excitation with fast electrons. Most of the salts were found to be efficient scintillators, as will be seen from the following representative light yields in % relative to NaI(Tl) (decay time in μsec is given in parenthesis): Rb2Pt(CN)4 1.5 H2O 48% (0.60), CsPt(CN)4H2O 70% (0.47), Rb2Sr(Pt(CN)4)2 6 H2O 53% (0.48), SrPt(CN)4 5 H2O 56% (0.42), and BaPt(CN)4 4 H2O 69% (1.76). The scintillation efficiencies for α-particle excitation are smaller; in terms of the ratio α/β of relative efficiencies (light output per MeV dissipated) one obtains 0.17. Possible applications of these materials are discussed, and because the abundance of high Z material makes the salts especially attractive for the detection of electromagnetic radiation, some data pertinent to γ-spectroscopy are given.
|Journal||Nuclear Instruments and Methods|
|Publication status||Published - 1962|