Excitation functions of (p,xn) reactions on highly enriched 122Te:: Relevance to the production of 120gI

被引：20

作者：

Hohn, A ^{[1
]}

Scholten, B ^{[1
]}

Coenen, HH ^{[1
]}

Qaim, SM ^{[1
]}

机构：

[1] Forschungszentrum Julich, Inst Nukl Chem, D-52425 Julich, Germany

来源：

APPLIED RADIATION AND ISOTOPES | 1998年 / 49卷 / 1-2期

关键词：

D O I：

10.1016/S0969-8043(97)00217-0

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Excitation functions were measured by the stacked-foil technique for (122)Te(p,xn)(119,120m.g.121,122)I reactions from their respective thresholds up to 45 MeV. Thin samples were prepared by electrolytic deposition of highly enriched (122)Te (97.12%) on Ti-backing. All the data considered together depict a very systematic trend in the excitation functions of (p,xn) reactions on (122)Te. Thick target yields of (119,120m.g.121,122)I were calculated from the smooth curves drawn through the experimental data. For the production of the beta(+) emitting radioisotope (120g)I (T(1/2) = 1.35 h) the full energy range of 30 to 40 MeV can be utilized. Considering the cost of the target material, however, the energy range E(p) = 37 --> 32 MeV appears to be preferable. Over this energy range the thick target yield of (120g)I amounts to 3.6 GBq (98 mCi)/mu Ah and the (120m)I and (119)I impurity levels to 25 and 6%, respectively. (C) 1997 Elsevier Science Ltd. All rights reserved.

引用

页码：93 / 98

页数：6