Sr2CuO2Cl2. signifies an almost great scenario of the two-D antiferromagnetic CuO2-aircraft and therefore is of individual interest during the context of the origins of higher TC superconductivity. We have calculated experimentally and analyzed theoretically the Ti 2p X-ray photoemission spectra (XPS) as well as resonant improvement of valence photoemissionat the https://okada4dsg.com/