Nuclear data relevant to the production of 120gI via the 120Te(p,n)-process at a small-sized cyclotron

被引：27

作者：

Hohn, A ^{[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 / 12期

关键词：

D O I：

10.1016/S0969-8043(98)00034-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Excitation functions of the nuclear reactions (120)Te(p,xn)(119,120m.g)I were measured for the first time from their respective thresholds up to 35 MeV. Use was made of the stacked-foil technique. Thin samples were prepared by electrolytic deposition of highly enriched (120)Te (99.0%) on Ti-backing. Integral yields of (119,120m.g)I were calculated from the measured cross section data. For the production of the medically interesting beta(+)-emitting radioisotope (120g)I (T(1/2) = 1.35 h) the energy range E(p) = 16 --> 9 MeV appears to be optimum, the thick target yield of (120g)I amounting to 2.3 GBq (62 mCi)/mu Ah and the (120m)I and (119)I impurity levels to 4.8 and 4.4%. respectively. A comparison of the (122)Te(p,3n)- and (120)Te(p,n)-processes for the production of (120g)I is given. Despite the higher cost of the target material, the (120)Te(p,n)-process is superior since a small-sized cyclotron is adequate and the radionuclidic quality of the product is better. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1493 / 1496

页数：4

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