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Updated: Aug 6, 2026

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
Preparation and activity measurement of electrodeposited alpha-emitting sources
K B Lee1, Jong Man Lee, Tae Soon Park
1Korea Research Institute of Standards and Science, Daejeon 305-600, Republic of Korea. lee@kriss.re.kr
Abstract:
Alpha-emitting 238Pu and 241Am sources on stainless steel substrates have been prepared using a new electrodeposition method based on an ammonium oxalate-ammonium sulfate electrolyte containing diethyl triamino pentaacetic acid. The deposition yield is determined by measuring the activity of the sources using a high-efficiency 2pi alpha proportional counter and a backscattering chamber designed and fabricated for this purpose. Optimal electrodeposition parameters have been determined for 241Am, enabling manufacture of standard alpha-emitting sources with minimal radioactive waste.
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