5 Corollary 2. A matrix B 2 M is the strict spectral approximation of C if and only if the vector (B ?C) is minimal with respect to the ordinary lexicographic ordering in the set f : = (B ? C); B 2… (More)

The first pure high-resolution photoexcited K(h)alpha(1,2) hypersatellite spectrum from a hollow Cu atom is measured. Its K(h)alpha(2)- Kalpha(1) shift and the K(h)alpha(1,2) lines' splitting,… (More)