Focal Interest
Focal Interest

Spectroscopy

  1. Time-resolved X-ray probes track heating and ionization in solid-density plasma
    Sub-picosecond X-ray spectroscopy and multi-scale simulations reveal spatiotemporal heating and ionization dynamics in laser-driven plasmas, with implications for fusion energy models.
  2. Atomic hydrogen test agrees with Standard Model prediction
    Ultra-precise measurement of hydrogen's 2S-6P transition resolves conflicting proton radius values and tests quantum electrodynamics to 0.7 parts per trillion, validating the Standard Model.
  3. 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.
  4. Stereochemical assignment of trifluoroacetamides using NMR signals
    Stereochemical assignment of N,N-dialkyl trifluoroacetamides using integrated analysis of through-space 1H···19F spin-spin couplings and aromatic solvent-induced shifts in 1H-NMR spectroscopy.
  5. Calcium isotope selectivity was increased with polarized resonance ionization
    Selective resonance ionization technique using angular momentum selection rules and polarized light enables isolation of rare calcium isotopes Ca-43 and Ca-41 while suppressing abundant Ca-40.
  6. Accurate rovibrational levels for He2 a3Σu+ state match spectroscopy
    High-precision rovibrational computations for He2 a 3Σu+ state incorporating relativistic, QED, and nonadiabatic corrections with sub-ppm potential energy curve accuracy.