Reactions of 57Mn implanted into solid oxygen

The in-beam Mossbauer spectroscopy using a short-lived 57Mn (T 1/2=1.5 min) beam was carried out to study the production of the exotic chemical species of 57Fe atoms arising from 57Mn implanted into solid oxygen. The obtained spectra can be analyzed by four components of doublets at least, which are assigned to be novel Fe species of FeO, Fe(O2), (O2)FeO2, and Fe(O2)2, on the basis of ab initio molecular orbital calculations.