Rubidium Rb

SRM 979), Ni (nickel metal isotopic standard NIST SRM 986), Rb (rubidium chloride isotopic standard NIST SRM 984) and Sr (strontium carbonate isotopic standard NIST SRM 987). In addition, isotope reference materials are available for heavy elements such as T1 (thallium metal isotopic standard NIST SRM 997), Pb (NIST lead standard reference materials SRM 981-983) or U (uranium oxide NIST isotope standard U 005, U020, U350, U500 or U930) and others. The most important isotope standard reference materials applied in inorganic mass spectrometry are summarized in the table in Appendix V.17... 

Fig. 11. Outline of the frequency chain between the 2S — 12D hydrogen frequencies and the LD/Rb and CO2/OSO4 standards. The details are explained in the text (Ti-Sa titanium sapphire laser, LD/Rb rubidium stabilized laser diode, LD(int) intermediate laser diode, CO2/OSO4 osmium tetraoxyde stabilized CO2 laser, SHG second harmonic generation, SFG sum frequency generation)...

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