Excitation functions of proton induced nuclear reactions on natural tellurium and enriched 123Te: Production of 123I via the 123Te(p,n)123I-process at a low-energy cyclotron |
| |
| Institution: | 1. Department of Medical Radiation Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran;2. Materials and Fuel Research School, Nuclear Science and Technology Research Institute, Tehran, Iran;3. Medical Physics Department, School of Medicine, Iran University of Medical Science, P.O. Box: 14155-6183, Tehran, Iran;1. Department of Radiation Oncology, Brigham and Women’s Hospital, Dana–Farber Cancer Institute and Harvard Medical School, Boston, MA, USA;2. Medical Physics Program, Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA, USA;1. Graduate School of Biomedical Science and Engineering, Hokkaido University, Sapporo 060-8638, Japan;2. Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan;3. Nishina Center for Accelerator-Based Science, RIKEN, Wako 351-0198, Japan;4. Institute for Nuclear Research (ATOMKI), 4026 Debrecen, Hungary;1. Reactor Research School, Nuclear Science and Technology Research Institute, Tehran, Iran;2. Faculty of Engineering, Shahid Beheshti University, Tehran, Iran;1. Department of Physics, Payame Noor University, P.O. Box: 19395-3697, Tehran, Iran;2. Medical Physics Department, School of Medicine, Iran University of Medical Sciences, P.O. Box: 14155-6183, Tehran, Iran;3. Radiation Application Research School, Nuclear Science and Technology Research Institute, P.O. Box: 14395-836, Tehran, Iran;1. Department of Physics and Astronomy, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia;2. Department of Physics, College of science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;3. Department of Physics, Sakarya University, Sakarya, Turkey |
| |
| Abstract: | Excitation functions were measured by the stacked-foil technique for (p, xn) reactions up to Ep = 20 MeV on natural tellurium and enriched 123Te. Thick target yields were calculated for the formation of 121I, 123I, 124I, 126I, 128I and 130I from natural tellurium, and 122I and 123I from enriched 123Te. The optimum energy range for the production of 123I via the 123Te(p, n)123I reaction is Ep = 14.5 → 11.0 MeV, and the theoretical thick target yield 4 mCi/μAh. The levels of the three major impurities 124I, 126I and 130I are directly dependent on the 124Te, 126Te and 130Te contents, respectively, in enriched 123Te. The levels of impurities determined experimentally under high-current production conditions agree with those calculated from the cross section data. A comparison of the three direct methods of 123I-production, viz. 124Te(p, 2n)123I, 123Te(p, n)123I and 122Te(d, n)123I, under optimum conditions for each reaction, is given. The yield and impurity-level data suggest that the 123Te(p, n)123I reaction has a great potential for production in a low-energy cyclotron, if highly enriched 123Te (>91%) is used. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
