The 32nd World Conference of the International Nuclear Target Development Society (INTDS2026)

Electron Beam Physical Vapor Deposition of Germanium-70 for targets manufacturing

1 Sept 2026, 10:00

20m

RIKEN Wako Campus

TUA1

Speaker

ntombizonke kheswa (iThemba LABS)

Description

Here, we report the manufacturing process of ⁷⁰Ge targets used in a nuclear physics experiment conducted at iThemba LABS (Laboratory for Accelerator-Based Sciences). The objective of this experiment was to gather information on the lowest excited states of ⁷²Se, ⁷²Ge, and ⁷²As through alpha-induced reactions on a ⁷⁰Ge target, specifically the reaction ⁷⁰Ge (α, X) Y. The targets for this experiment were physically deposited under vacuum using an electron beam deposition (EBEAM) procedure. Atomic layers of ⁷⁰Ge were collected on the polished stainless-steel substrates, which were previously coated with barium chloride, which acted as a parting agent. The thickness of the deposited targets was subsequently measured using X-ray fluorescence.
Key words: Ge, ⁷⁰Ge, e-beam, parting agent

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[2] D.N. Braski. Nucl. Instr. and Meth. 102 (1972) 549-552.