Issue 12, 2006
From the journal:

Analyst

Separation of samarium and neodymium: a prerequisite for getting signals from nuclear synthesis

Samir Maji,a   Susanta Lahiri,*b   Birgit Wierczinskic  and  Gunther Korschinekd  

* Corresponding authors

a Department of Chemistry, The University of Burdwan, Burdwan, India

b Chemical Sciences Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, India
E-mail: susanta.lahiri@saha.ac.in

c Institut für Radiochemie, Technische Universität München, Walther-Meissner-Strasse 3 Garching, Germany

d Technische Universität München, Fakultät für Physik, James-Franck-Straβe-1, Garching, Germany

Abstract

146Sm (T1/2 = 108 y) is a long-lived radionuclide which has been produced in significant amounts during burning in a supernova (SN). Detection of this SN produced long-lived radionuclide on Earth may be helpful for getting information on nuclear synthesis at the time of our solar system’s formation. Only accelerator mass spectrometry (AMS) can determine such minute traces of 146Sm still expected in the Earth’s crust. However, the villain of 146Sm measurement through AMS is its naturally occurring stable isobar 146Nd which is a million times more abundant than the trace amount of 146Sm. Therefore an efficient method for the separation of samarium and neodymium is required to measure 146Sm through AMS. A simple liquid–liquid extraction (LLX) based method for separation of samarium and neodymium has been developed using radiometric simulation. Di-(2-ethylhexyl)phosphoric acid (HDEHP) has been used as the organic reagent. A very high separation factor (∼106) can be achieved when a solution containing samarium and neodymium is reduced by hydroxylamine hydrochloride followed by extraction with 0.1% HDEHP diluted in cyclohexane from 0.025 M HCl solution.

Graphical abstract: Separation of samarium and neodymium: a prerequisite for getting signals from nuclear synthesis

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Article information

DOI
https://doi.org/10.1039/B608157F
Article type
Paper
Submitted
08 Jun 2006
Accepted
12 Sep 2006
First published
28 Sep 2006

Analyst, 2006,131, 1332-1334

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Separation of samarium and neodymium: a prerequisite for getting signals from nuclear synthesis

S. Maji, S. Lahiri, B. Wierczinski and G. Korschinek, Analyst, 2006, 131, 1332 DOI: 10.1039/B608157F

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