Population inversion in copper on transitions with wavelengths of 510.6 and 578.2 nm in a recombining Cu-Cs plasma Bogacheva, S. P. ; Voroniuk, L. V. ; Lendel, V. I. ; Fedorchenko, A. M. Abstract Publication: High Temperature Science Pub Date: July 1983 Bibcode: 1983HTemS..21...10B