The 40 Ar(d,p) 41 Ar cross section between 3-7 MeV.

To determine the safety of using argon as a deuteron beam stopping material, the   ⁴⁰ Ar(d,p) ⁴¹ Ar cross section was measured at average deuteron energies of 3.6 MeV, 5.5 MeV, and 7.0 MeV using an activation method. A 16-MeV deuteron beam produced by Lawrence Berkeley National Laboratory's 88-Inch Cyclotron was degraded to each energy by nickel foils and the front wall of an aluminum gas chamber. The reduced-energy deuterons were used to activate a sample of ^nat Ar gas. After each irradiation, the gas chamber's   ⁴¹ Ar activation was measured with a high-purity germanium detector. The cross sections measured were larger than a previous measurement by ∼40%.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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