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NIST X-ray Photoelectron Spectroscopy Database (SRD 20), Version 5.0
Reliable, with one-point correction of energy scale
Comment:
X-ray emission anal. gave a Cu/Mn ratio 1/2. The impurity composition by neutron activation analysis is (in ppm) K7170,Ca4600,Fe1850,Zn320,Br226,Co158,As70,Sb20,Cr9 and Ag2.7. The activation was done under controlled gas flow at ~493K in pure O2.