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  Alkaline Metals Biphthalate X-Ray single crystals KAP, CsAP, RbAP, NH4AP
 

      Alkaline Metals Biphthalate single crystals are used in x-ray spectral analysis as analysing crystals in a long wave spectral area. The analysing crystals serve to separate the X-radiation into spectrum. The usage of these crystals enables a qualitative and quantitative analysis of light elements (Fe, Al, Mg, F, Si), due to their lattice (up to 2.6 nm). The plasticity and high fissionability of these crystals facilitates the production of fine plates (0.2 - 0.5 mm) for focusing analyzers. Biphthalate crystals are stable in a vacuum.

            Potassium Biphthalate       KAP     C6H4(COOH)(COOK)
            Cesium Biphthalate        CsAP     C6H4(COOH)(COOCs)
            Rubidium Biphthalate       RbAP     C6H4(COOH)(COORb)
            Ammonium Biphthalate       NH4AP     C6H4(COOH)(COONH4)

      By increasing the cation radius, the reflection integral coefficient increases as well. Therefore these crystals, as for example CsAP, could be effectively used for qualitative x-ray spectral analysis of various materials and for overall spectra of remote astrophysical objects obtainment.
      By decreasing the cation radius, the resolving capacity of the method increases. The usage of such crystals, as for example NH4AP, as analysing crystals in x-ray spectrometers enables substantial extension of their resolving capacity in 0.8 - 2.5 nm.

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