核医学与放射治疗

Evaluated 149,152,155 &161Tb Production Cross-Sections Using Gd(p, xn)Tb Reactions Near and Above Thershold

Abstract

Kailash Pandey* and D P SIngh

The Production cross-section of radio-isotopes; ^{149, 152, 155 & 161}Tb have been calculated via various reactions on the Gadolinium isotopes, using nuclear model codes EMPIRE 3.2 & PACE4 based on Hausher Feshback approach and compared with TENDL-2019 library (calculated by TALYS code). Threshold for the production of radio-isotope ¹⁴⁹Tb through ¹⁵²Gd (p, 4n) is 30 MeV (barrier height; 22.79 MeV) while for ¹⁵²Tb & ¹⁵⁵Tb through ¹⁵⁵Gd (p, xn); x =1&4 channels are 6 & 28 MeV respectively. For ¹⁶¹Tb the production threshold through reaction channel ¹⁶⁰Gd(p, γ) is around 6 MeV. Quite appreciable values of the production cross-sections of all the desired isotopes have been obtained within the studied energy range. The results presented in this work are significant as quite less experimental data is available for the studied isotopes, further the reaction channel studied provides an alternate pathway for production of these radio-isotopes having importance in nuclear medicine industry.