Dopant

  1. Trace ethylene boosts nitrogen GC-MS sensitivity
    Adding trace ethylene to nitrogen carrier gas in GC-MS increases sensitivity 20-fold while maintaining 70 eV electron-ionization spectral patterns compatible with existing reference libraries.
  2. Cr and rare-earth grey phases form in doped fuel models
    Synchrotron spectroscopy reveals chromium and lanthanide speciation in Cr-doped uranium dioxide fuels, showing perovskite secondary phases remain structurally stable under radiation exposure.