Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe26+ in Iron

P. Horodeka, b, A.G. Kobetsb, c, K. Siemeka, b, V.A. Skuratovb, d, e aInstitute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland bJoint Institute for Nuclear Research, 6 Joliot Curie Str., 141980 Dubna, Russia cInstitute of Electrophysics and Radiation Technologies NAS of Ukraine, Chernyshevsky Str. 28, 61002 Kharkov, Ukraine dNational Research Nuclear University MEPhI, Kashirskoye sh. 31, 115409 Moscow, Russia eDubna State University, Universitetskaya 19, 141980 Dubna, Russia

Full Text PDF

Experimental studies of pure iron exposed to Xe26+ irradiation are reported. Implantations were made with the fluence of 5×1013 ions/cm2 using 167 MeV ions moderated to 122.5, 77.0, and 44.5 MeV. Investigations were performed with variable energy positron beam (VEP). Doppler broadening spectroscopy (DB) was applied. The analysis of obtained results gives information about the presence of various kind of open-volume defects. Two layers with different values of positron diffusion lengths were found in implanted samples. The deeper one was more defected.

DOI:10.12693/APhysPolA.136.318 PACS numbers: 61.80.Jh, 61.82.Bg, 78.70.Bj