Differences in the Production of Noncharacteristic Radiation in Solid and Gas Targets Peterson, R. S. ; Thoe, R. S. ; Hayden, H. ; Elston, S. B. ; Forester, J. P. ; Liao, K. -H. ; Griffin, P. M. ; Pegg, D. J. ; Sellin, I. A. ; Laubert, R. Abstract Publication: Beam-Foil Spectroscopy, Collisional and Radiative Processes, Volume 2 Pub Date: 1976 Bibcode: 1976bfs2.conf..497P