Patent attributes
A radioisotope production apparatus includes a particle accelerator, a first target portion on which a charged particle beam emitted from the particle accelerator is incident and through which the charged particle beam passes, and a second target portion on which the charged particle beam passing through the first target portion is incident. In the first target portion, a target material is held in a beam passage, and a cooling gas supply unit which blows a cooling gas to the target material is provided. In a second target portion, a target substrate is held on a beam axis and a downstream-side surface of the target substrate with respect to the charged particle beam is cooled by cooling water. A total thickness of target foils of the first target portion on the beam axis is smaller than a thickness of the target substrate of the second target portion on the beam axis.
