NanoSIMS and more: New tools in nuclear astrophysics

[摘要] Primitive Solar System materials contain nm- to μm-sized presolar grains that formed in the winds of evolved stars and in the ejecta of stellar explosions. These samples of stardust can be analysed in terrestrial laboratories with sophisticated analytical instrumentation in great detail. Of particular importance are coordinated studies of individual grains by Secondary Ion Mass Spectrometry (SIMS), Resonance Ionization Mass Spectrometry (RIMS) and Focused Ion Beam/Transmission Electron Microscopy (FIB/TEM) from which detailed information on isotopic compositions and mineralogies can be obtained. A key tool is the NanoSIMS 50 ion probe which permits to do isotope measurements of light and many intermediate-mass elements with spatial resolutions of

[发布机构] Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, Mainz; 55128, Germany^1

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Analysis techniques;Analytical Instrumentation;Atom-probe tomography;Isotope measurements;Isotopic composition;Nuclear astro-physics;Resonance ionization mass spectrometry;Terrestrial laboratories