The projectile-target system Ca+ Ni has been used to produce the neutron deficient N = 50 isotones Tc, Ru, and Rh at high angular momentum. The multidetector array NORDBALL including particle selection was used. A large number of new levels were found in all three nuclei.Most of them can be interpreted as states with a neutron particle-hole excitation across the N = 50 shell gap, coupled to lower valence-proton configurations. Some of the observed levels above 11 MeV probably correspond to states with two neutrons excited across the shell gap.PACS number(s): 23.20.Lv, 25.70. Jj, 21.60.Cs, 27.60. +j

The X-ray spectrum associated with K-stopping in liquid hydrogen was measured with high resolution Si(Li) detectors. The total K X-ray yield is not larger than 8 x 10 4 per stopped K assuming no line broadening. A weak line pattern was found, which was tentatively ascribed to the K-H K-series X-rays. The shift and width of the ls level, deduced from this pattern, are c, s = + 270 + 80 eV and F = 560-+ 260 eV, respectively.

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