量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum and Radiological Science and Technology.
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The excitation function of the natZn(p,x)62Zn nuclear process was measured by the stacked-foil technique up to a proton energy of 70 MeV to obtain accurate data for production of the 'mother nuclide '(62Zn) of the PET related beta+ emitting radioisotope 62Cu. Investigations were also made on the 66Zn(p,x)62Zn and natZn(p,xn)66Ga processes and on the 66Zn(p,n)66Ga reaction using natZn and highly enriched 66Zn. The excitation functions were compared with the published data. Thick target yields for the natZn(p,x)62Zn and natCu(p,xn)62Zn processes were also calculated up to 70MeV. On the basis of these calculations the natZn+p process results in higher yield for 62Zn above 50MeV than the natCu+p process. The latter process is presently used for practical production of 62Zn. In an energy window from 70 to 30MeV the available EOB yield of the natZn+p reactions is around 19mCi/muAh (0.7 GBq/muAh) that makes the natZn(p,x)62Zn process a good candidate for routine generator production.
Investigation of the natZn(p,x)62Zn nuclear process up to 70 MeV: a new 62Zn/62Cu generator
