ag4dDownload scientific diagram | shows Ag4d XPS spectra measured in H 2 , N 2 , O 2 , and He. It is seen that each gas results in a different fine structure in the inelastic scattering backgroundAG4D Website Sumatera Barat e-mail : @. Beranda ... Email : @. Alamat : Jalan Rasuna Sa Nomor 74