Abstract
A new implantation technique is developed for the in-beam Mossbauer spectroscopy with implantation energy of several GeV using the RIken Projectile Separator (RIPS). 57Mn (T 1/2 = 1.45 min) ions can be produced and subsequently implanted into any material as a secondary radioactive beam by the projectile-fragmentation reaction of 59 Co beam with a Be target. The Mossbauer spectra of 57Fe in a p-type (100) FZ-Si following β-decay from 57Mn were measured at different temperatures between 30 and 296 K. The spectra can be fitted with two single lines, which are assigned to interstitial and substitutional 57Fe atoms in Si. This technique can be easily applied to other nuclear probes, and therefore, opens a new possibility for Mossbauer spectroscopy complementary to synchrotron techniques.
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