Importance

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Abstract

Provided is a target apparatus of high durability so that a thin film is not deformed or damaged under an environment of high temperature and high pressure generated during a nuclear reaction between proton and H.sub.2.sup.18O concentrate, and a productivity of .sup.18F can be increased. The target apparatus includes a cavity member having a cavity, in which H.sub.2.sup.18O concentrate is received, for producing .sup.18F using a nuclear reaction between proton irradiated onto the H.sub.2.sup.18O concentrate in the cavity and the H.sub.2.sup.18O concentrate. The cavity member includes: a front opening and a rear opening facing opposite directions to each other on the irradiation path of the proton, and connected to the cavity so that the cavity can be communicated with the outside; a front thin film and a rear thin film disposed to block the front opening and the rear opening, respectively; and a front reinforcing member and a rear reinforcing member coupled to the cavity member so as to support the front thin film and the rear thin film in order to prevent the front and rear thin films from being swelled due to a pressure rising in the cavity during the nuclear reaction, wherein the front reinforcing member includes a plurality of penetration holes penetrating the front reinforcing member in the irradiation direction of the proton.

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First Claim