- Conference date: 22–26 March 2009
- Location: Monterey (California)
We have performed experiments at the Omega Laser Facility at the University of Rochester/Laboratory for Laser Energetics to measure time‐resolved electron temperature (Te) and ion temperature (Ti) in high‐temperature implosions. These experiments use direct laser drive on thin glass shells filled with a mixture of D, Kr, and Xe, and use neutron and proton emission to diagnose Ti and x‐ray emission to diagnose Te. The Kr dopant serves as an optically‐thin tracer for Te measurements via K‐shell spectroscopy, while the Xe dopant enhances radiation losses and serves as an energy sink due to ionization. Important results include the observation of an order‐of‐magnitude increase in areal density with a low concentration of Xe, the observation of double‐peaked Ti and x‐ray emission time profiles indicative of separate shock and compression phases, and generally good agreement with hydrodynamic simulations of the temperature histories. We describe the experiments, the results, and the supporting hydrodynamics simulations.
- Temperature measurement
- Ionizing radiation
- Neutron spectroscopy
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