Separation of 71,72As from alpha particle induced gallium oxide target by solid cation and anion exchangers, DOWEX-50 and DOWEX-1

Nabanita Naskar; Susanta Lahiri

doi:10.1016/j.apradiso.2021.109876

Separation of ^71,72As from alpha particle induced gallium oxide target by solid cation and anion exchangers, DOWEX-50 and DOWEX-1

Appl Radiat Isot. 2021 Oct:176:109876. doi: 10.1016/j.apradiso.2021.109876. Epub 2021 Jul 22.

Authors

Nabanita Naskar¹, Susanta Lahiri²

Affiliations

¹ Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, 700064, India.
² Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, 700064, India; Homi Bhabha National Institute, Anushakti Nagar, Mumbai, 400094, India. Electronic address: susanta.lahiri.sinp@gmail.com.

PMID: 34330034
DOI: 10.1016/j.apradiso.2021.109876

Abstract

46.0 MeV alpha particle induced reaction on gallium oxide target results production of no-carrier-added (NCA) ^71,72As and ⁶⁷Ga tracer. ^71,72As were separated from the target matrix by solid liquid extraction (SLX) using two different exchangers, Dowex-1 and Dowex-50. At best condition of 0.2 g Dowex-1 + 6 M HCl and 0.2 g Dowex-50 + 10^-3 M HCl bulk gallium was completely extracted leaving behind NCA ^71,72As in the aqueous phase. Dowex-50 was found to be more suitable and offered high separation factor, 3.2 × 10⁵.

Keywords: Alpha-induced reaction; Dowex-1; Dowex-50; NCA (71,72)As; Solid-liquid extraction.