TY - RPRT TI - Intense Superradiant X Rays from a Compact Source Using a Nanocathode Array and Emittance Exchange AU - Graves, W. S. AU - Kärtner, F. X. AU - Moncton, D. E. AU - Piot, P. PY - 2012 DO - 10.1103/physrevlett.108.263904 UR - https://www.osti.gov/biblio/1103664 ID - 1103664 ER -