Korea Atomic Energy Research Institute

Electronics and Telecommunications Research Institute

Kwang Jae Son

Sung-Weon Kang

Jong Kwang Lee

Kyung-Hwan Park

Byoung-Gun Choi

Sun Ju Choi

Hwan Seo Park

Jin-Hee Lee

Young Rang Uhm

Ul Jae Park

Hyon Soo Han

Ki Rak Lee

Hong Joo Ahn

Hyeon Young Shin

Jun Sig Lee

Soon Bog Hong

Kang Hyuk Choi

Kang Duk Jang

Jong Sub Lee

Sung-Soo Nam

The present invention relates to a method for simultaneous analysis of radiocarbon and tritium, the method including (i) mixing a radioactive waste sample containing a radiocarbon nuclide and tritiated water, and an oxidizing agent; (ii) oxidizing the radiocarbon nuclide in the radioactive waste sample to a gas containing an oxide of the radiocarbon nuclide by the oxidizing agent while suppressing volatilization of compounds containing gamma radionuclides other than the radiocarbon nuclide and tritium; (iii) discharging the gas containing an oxide of the radiocarbon nuclide by injecting an inert gas to the mixture; (iv) vaporizing and discharging the tritiated water in the mixture; and (v) analyzing radioactivity of radiocarbon and tritium from the discharged gas containing an oxide of the radiocarbon nuclide and tritiated water, and an apparatus for analysis of the same.

Method for simultaneous analysis of radiocarbon and tritium

Provided is a beta voltaic battery including a first semiconductor layer, a second semiconductor layer, and a beta-ray generator which is disposed between the first semiconductor layer and the second semiconductor layer and includes a metal substrate having both sides coated with a radioisotope layer. The beta voltaic battery according to the present invention has no sealing layer, but may efficiently shield beta rays through a sandwich structure. Since the sealing layer is absent, the absorption of beta rays by the semiconductor may be improved, and excellent energy conversion efficiency may be obtained because output is improved due to the two semiconductor layers and the radioisotope ray source coated on the both sides.

Beta voltaic battery and method of preparing the same

The present invention provides a technique for adsorbing I-125 on a support for treating cancer and a method of preparing an I-125 seed using the same. Since a method of preparing iodine according to the present invention uses an intermediate having phosphate-based, oxalate-based, or arsenate-based anions introduced thereinto, the intermediate has a substitution effect of iodine 3 to 5 times higher than that of a typically used intermediate having chlorine anions introduced thereinto. According to the substitution effect, control of a radiation dose may be possible during the manufacturing of an iodine seed and an iodine seed may be prepared within a shorter period of time. Also, since an amount of residual radioactive iodine may be decreased as a result of a large amount of adsorption, an amount of radioactive iodine (I-125) waste may be decreased, and the effect thereof may be also high environmentally.

Method of preparing iodine seed for treating eye disease or cancer, and iodine seed prepared thereby

Disclosed is a novel adsorbent for use in aMo/Tc generator, which is a medical diagnostic radioisotope generator, and in aW/Re generator, which is a therapeutic radioisotope generator. The adsorbent composed of sulfated alumina or alumina-sulfated zirconia exhibits adsorption capacity superior to that of conventional adsorbents, and is stable and is thus loaded in a dry state in an adsorption column so that the radioisotopeMo orW can be adsorbed. Thus, it is possible to miniaturize the column, and such a miniaturized column is small, convenient to use, and highly efficient, and extracts a radioisotope satisfying the requirements for pharmaceuticals, and thus can be useful for radioisotope generators extractingTc orRe.

Adsorbents for radioisotopes, preparation method thereof, and radioisotope generators using the same

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Sejong, South Korea

Kwang Jae Son