Developing radiopure copper alloys for high strength low background applications
Jan 3, 2018
Published in:
- AIP Conf.Proc. 1921 (2018) 1, 080001
Contribution to:
- Published: Jan 3, 2018
DOI:
Citations per year
Abstract: (AIP)
High purity copper continues to play an important role for ultra-low-background detectors. Measurements of rare nuclear decays, e.g. neutrinoless double-beta decay, and searches for dark matter can require construction materials that have high thermal and electrical conductivity with bulk radiopurity less than one micro-Becquerel per kilogram. However, experiments currently using components constructed of radiopure electroformed copper struggle with design of structural and mechanical parts due to the physical properties of pure copper. A higher strength material which possesses many of the favorable attributes of copper yet remains radiopure is desired. A number of copper alloying candidates which may provide improved mechanical performance and adequate radiopurity were considered. Development of an electrodeposited copper-chrome alloy from additive-free electrolyte systems is discussed. The resulting material is shown to possess high strength and meets the aforementioned radiopurity goals.- copper
- admixture
- background: low
- background: radioactivity
- chromium
- alloy
- fabrication
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