The preparation of the Moessbauer source 119Sb

This paper introduces the preparation of the Moessbauer Source 119Sb by irradiating natural Sn metal with 32 MeV α-particles from cyclotron using (α,xn) reaction, x < 4. After 119Sb was chemically separated from Te, electroplating, diffusion and chemical procedure were used for making 119Sb(Sb) and 119Sb2O3 Moessbauer source, respectively. The measurement was performed on a self-made Moessbauer spectrometer. Moreover, the parabola-Lorentzian least square fits were used to analyze Moessbauer spectra both in single line and double line in consideration of a quadrupole split of 0.50(2) mm/s for absorber SnO2. The isomer shifts are -1.79(6) mm/s and 0.097(70) mm/s for 119Sb(Sb) and 119Sb2O3, respectively. The results show that the chemical process we used is suitable for separating Sb, the diffusion temperature 535 deg C (Td = 0.85 Tm, Tm is melting temperature) and temperature-keeping time are adequate, too. (author)