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Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Nuclear Technology
Fusion Science and Technology
July 2025
Latest News
The U.S. Million Person Study of Low-Dose-Rate Health Effects
There is a critical knowledge gap regarding the health consequences of exposure to radiation received gradually over time. While there is a plethora of studies on the risks of adverse outcomes from both acute and high-dose exposures, including the landmark study of atomic bomb survivors, these are not characteristic of the chronic exposure to low-dose radiation encountered in occupational and public settings. In addition, smaller cohorts have limited numbers leading to reduced statistical power.
Sandy Quan, Neil B. Morley, Mohamed A. Abdou
Fusion Science and Technology | Volume 39 | Number 2 | March 2001 | Pages 697-701
Chamber Technology | doi.org/10.13182/FST01-A11963320
Articles are hosted by Taylor and Francis Online.
One definition for the “damage limit” of a liquid metal surface used as a final optic for laser fusion power plants is the maximum energy flux that the liquid metal can withstand without any resulting spallation. Some preliminary calculations were performed by Moir to roughly estimate the damage limit by imposing the restriction of a 200°C surface temperature rise. Here, new 1D calculations that account for hydro-motion on the compressible time scales are presented, along with revised estimates of the damage limits for liquid aluminum, sodium, and mercury. Slow compression time scales (~20 ns) produced negative pressures in the liquid film on the order of MPa, and fast ignition time scales (~10 ps) yielded GPa pressures for the laser energy densities set out by Moir. For Na and Al the peak energy densities normal to the beam on the order of 5 to 10 J/cm2 were acceptable for fast ignition when 85° grazing incidence is assumed. Some experimental data on the generation and damping of surface waves resulting from surface ablation recoil is also presented, where large waves are seen to damp out after about 50 ms following the laser pulse.