The Department of Energy National Nuclear Security Administration Fellowships:
The DOE NNSA SSGF is open to any U.S. citizen or permanent resident alien planning full-time, uninterrupted study toward a doctoral degree at an accredited U.S. university. Those eligible to apply include senior undergraduate students and first- and second-year graduate students focusing their studies on high energy density physics, nuclear science, or properties of materials under extreme conditions and hydrodynamics.
The DOE NNSA LRGF is open to U.S. citizens engaged in full-time, uninterrupted study toward a doctoral degree at an accredited U.S. university. Students must be in their second (or later) year of doctoral work in one of the supported fields of study at the time they apply.