Nikjou A, Sadeghi M
Department of Physics, Payame Noor University, P.O. Box 19395-4697, Tehran, Iran.
Medical Physics Department, School of Medicine, Iran University of Medicine Science, P.O. Box: 14155-6183, Tehran, Iran.
Appl Radiat Isot. 2018 Jun;136:45-58. doi: 10.1016/j.apradiso.2018.02.003. Epub 2018 Feb 17.
The I radionuclide (T = 13.22 h, β+ = 100%) is one of the most potent gamma emitters for nuclear medicine. In this study, the cyclotron production of this radionuclide via different nuclear reactions namely, the Sb(α,2n), Te(d,n), Te(p,n), Te(p,2n), Xe(p,2n), I(p,5n) and I(d,6n) were investigated. The effect of the various phenomenological nuclear level density models such as Fermi gas model (FGM), Back-shifted Fermi gas model (BSFGM), Generalized superfluid model (GSM) and Enhanced generalized superfluid model (EGSM) moreover, the three microscopic level density models were evaluated for predicting of cross sections and production yield predictions. The SRIM code was used to obtain the target thickness. The I excitation function of reactions were calculated by using of the TALYS-1.8, EMPIRE-3.2 nuclear codes and with data which taken from TENDL-2015 database, and finally the theoretical calculations were compared with reported experimental measurements in which taken from EXFOR database.
碘放射性核素（半衰期(T = 13.22)小时，β⁺发射率(100%)）是核医学中最强的γ射线发射体之一。在本研究中，研究了通过不同核反应，即锑（α，2n）、碲（d，n）、碲（p，n）、碲（p，2n）、氙（p，2n）、碘（p，5n）和碘（d，6n），回旋加速器生产这种放射性核素的情况。此外，评估了各种唯象核能级密度模型，如费米气体模型（FGM）、背移费米气体模型（BSFGM）、广义超流体模型（GSM）和增强广义超流体模型（EGSM），以及三种微观能级密度模型对截面预测和产率预测的效果。使用SRIM代码获得靶厚度。利用TALYS - 1.8、EMPIRE - 3.2核代码以及取自TENDL - 2015数据库的数据计算反应的碘激发函数，最后将理论计算结果与取自EXFOR数据库的已报道实验测量结果进行比较。
