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Journal Articles

Development of $$^{99m}$$Tc production from (n,$$gamma$$)$$^{99}$$Mo based on solvent extraction

Kimura, Akihiro; Awaludin, R.*; Shiina, Takayuki*; Tanase, Masakazu*; Kawauchi, Yukimasa*; Gunawan, A. H.*; Lubis, H.*; Sriyono*; Ota, Akio*; Genka, Tsuguo; et al.

Proceedings of 3rd Asian Symposium on Material Testing Reactors (ASMTR 2013), p.109 - 115, 2013/11

JP, 2011-173260   Patent publication (In Japanese)

$$^{99m}$$Tc is generated by decay of $$^{99}$$Mo. Production of $$^{99}$$Mo is carried out by (n,f) method with high enriched uranium targets, and the production are currently producing to meet about 95% of global supply. Recently, it is difficult to carry out a stable supply for some problems such as aging of reactors etc. Furthermore, the production has difficulties in nuclear proliferation resistance etc. Thus, (n,$$gamma$$) method has lately attracted considerable attention. The (n,$$gamma$$) method has several advantages, but the extremely low specific activity makes its uses less convenient than (n,f) method. We proposed a method based on the solvent extraction, followed by adsorption of $$^{99m}$$Tc with alumina column. In this paper, a practical production of $$^{99m}$$Tc was tried by the method with 1Ci of $$^{99}$$Mo produced in MPR-30. The recovery yields were approximately 70%. Impurity of $$^{99}$$Mo was less than 4.0$$times$$10$$^{-5}$$% and the radiochemical purity was over 99.2%.

Journal Articles

Development of $$^{99m}$$Tc production from (n,$$gamma$$)$$^{99}$$Mo based on solvent extraction and column chromatography

Kimura, Akihiro; Awaludin, R.*; Shiina, Takayuki*; Tanase, Masakazu*; Kawauchi, Yukimasa*; Gunawan, A. H.*; Lubis, H.*; Sriyono*; Ota, Akio*; Genka, Tsuguo; et al.

Proceedings of 6th International Symposium on Material Testing Reactors (ISMTR-6) (Internet), 7 Pages, 2013/10

JP, 2011-173260   Patent publication (In Japanese)

This research is development of $$^{99m}$$Tc production. $$^{99m}$$Tc is generated by decay of $$^{99}$$Mo. The supply of $$^{99}$$Mo in Japan depends entirely on the import from foreign countries. Thus, it is needed to supply $$^{99}$$Mo stably by the domestic manufacturing. A practical production of $$^{99m}$$Tc was tried by the method with 1 Ci of $$^{99}$$Mo produced in MPR-30. The results showed that the recovery yields were approximately 70%. The concentration of the product obtained was estimated to be corresponding to about 30 GBq (800 mCi)/ml when 150g of MoO$$_{3}$$ was irradiated for 5 days in MPR-30. Impurity of $$^{99}$$Mo was less than 4.4$$times$$10$$^{-5}$$%, which was lower than that of Japanese tentative regulation criteria. The radiochemical purity was higher than 99.8% that cleared the tentative regulation (95%) of Japan.

Journal Articles

Impressions of the talk presented by Mr.L.Guerin

Genka, Tsuguo

Isotope News, 0(503), p.28 - 29, 1996/04

no abstracts in English

Journal Articles

Cerenkov counting method for Sr-89/90 determination in fission product Mo-99

Genka, Tsuguo; A.Mutalib*; H.I.Komala*; M.Ramli*; Adang.H.G.*; M.Sayad*; E.Sovilawati*; W.R.Suparna*

Kinrin Ajia Shokoku Niokeru Genshiryoku Anzen Kakuho Suijun Chosa Hokokusho, 0, p.254 - 266, 1996/02

no abstracts in English

Journal Articles

Radioactivity standards for $$^{192}$$Ir brachytherapy sources

Genka, Tsuguo; ; E.Juita*; Takeuchi, Norio

Nuclear Instruments and Methods in Physics Research A, 369, p.709 - 712, 1996/00

 Times Cited Count:4 Percentile:43.42(Instruments & Instrumentation)

no abstracts in English

Journal Articles

On the radioactivity measurements by thermal energy measurements

Genka, Tsuguo

Oyo Netsu Bunseki; Kobunshi, Iyaku, Denshi Zairyo Nado 100-Shu No Sokutei Deta Kaisetsushu, 0, p.206 - 207, 1996/00

no abstracts in English

Journal Articles

Radioactivity measurements by calorimetry

Genka, Tsuguo

Radioisotopes, 45(1), p.63 - 64, 1996/00

no abstracts in English

Journal Articles

Principle of radioactivity measurements with a calorimeter and its applications

Genka, Tsuguo

Semento, Foramu Tsushin, 0(15,16), 1 Pages, 1995/00

no abstracts in English

Journal Articles

Analytical calculations on radioactivity measurements of $$^{192}$$Ir metallic sources with a calibrated ionization chamber

*; Genka, Tsuguo; Mori, Chizuo*; D.F.G.Reher*

Nuclear Instruments and Methods in Physics Research A, 339, p.377 - 380, 1994/00

 Times Cited Count:5 Percentile:53.4(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Determination of gamma-ray emission probabilities for $$^{75}$$Se, $$^{166m}$$Ho and $$^{192}$$Ir by a self-consistent method

*; *; Mori, Chizuo*; Takeuchi, Norio; Genka, Tsuguo

Nuclear Instruments and Methods in Physics Research A, 339, p.203 - 208, 1994/00

 Times Cited Count:10 Percentile:68.35(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Radioactivity measurements of $$^{192}$$Ir wire sources with a microcalorimeter

Genka, Tsuguo; ; Takeuchi, Norio; Uritani, Akira*; Mori, Chizuo*

Nuclear Instruments and Methods in Physics Research A, 339, p.398 - 401, 1994/00

 Times Cited Count:6 Percentile:57.19(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Second EUROMET comparison of air kerma rate and activity measurements of $$^{192}$$Ir brachytherapy wires

D.F.G.Reher*; A.H.L.Aalbers*; H.Bjerke*; N.Drugge*; Genka, Tsuguo; M.J.Rossiter*; D.Santry*; J.P.Sephton*; G.Sibbens*; J.Seuntjens*; et al.

Nuclear Instruments and Methods in Physics Research A, 339, p.386 - 390, 1994/00

 Times Cited Count:5 Percentile:53.4(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Radiometric calorimetry for the quality assurance of radioisotope products

Genka, Tsuguo

Proc. of the 9th Pacific Basin Nuclear Conf., Vol. 1, 0, p.427 - 432, 1994/00

no abstracts in English

Journal Articles

Topics on gauging applications

Genka, Tsuguo

Isotope News, 0(470), p.12 - 15, 1993/08

no abstracts in English

Journal Articles

2nd Topical Mtg.on Industrial Radiation and Radioisotope Measurement Applications

Genka, Tsuguo

Nihon Genshiryoku Gakkai-Shi, 35(4), p.309 - 310, 1993/04

no abstracts in English

Journal Articles

Radiometric calorimetry for radioisotope production and distribution

Genka, Tsuguo

Hoshasen, 19(3), p.49 - 56, 1993/00

no abstracts in English

Journal Articles

Quality control of radioisotopes at JAERI

Genka, Tsuguo;

Hoshasen Kagaku, 36(12), p.421 - 425, 1993/00

no abstracts in English

Journal Articles

Gauging techniques with radioisotopes and radiations

Genka, Tsuguo

Radioisotopes, 42(7), p.437 - 438, 1993/00

no abstracts in English

Journal Articles

Radioactivity measurements of $$^{153}$$Gd pellet sources by calorimetric methods

Genka, Tsuguo;

Nuclear Instruments and Methods in Physics Research A, 312, p.193 - 197, 1992/00

 Times Cited Count:2 Percentile:37.37(Instruments & Instrumentation)

no abstracts in English

Journal Articles

The Present status of development of radioisotope sources in Russia

Genka, Tsuguo

Radioisotopes, 41(8), p.61 - 62, 1992/00

no abstracts in English

32 (Records 1-20 displayed on this page)