Heliophysics is also interested in using PFLs to perform high-angular resolution X-ray measurements of solar phenomena. PFLs have very long, 100 m -> >> km focal lengths (depending on X-ray energy and PFL diameter). Work is moving forward on developing formation-flying satellites (with N. Shah, Code 591) and we are part of a recently selected EPSCoR proposal (NMSU, PI institution) to develop a CubeSat mission to demonstrate formation flying and PFL imaging. Initial deliverable will be PFL(s) that will be characterized in the 600-m Interferometry Testbed. Based on these results, the NEU fabrication technique could be used to fabricate PFLs for the EPSCoR CubeSat mission.
The development of highly efficient and lightweight X-ray optics that image near the diffraction limit and over a wide energy range would be a transformational technical development.
Evaluating the NEU nanofabrication technique will allow NASA/GSFC to evaluate its potential in material engineering.