Separation of samarium and neodymium: a prerequisite for getting signals from nuclear synthesis
- ️Gunther Korschinek
* 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.
Article information
- https://doi.org/10.1039/B608157F
- Paper
- 08 Jun 2006
- 12 Sep 2006
- 28 Sep 2006
DOI
Article type
Submitted
Accepted
First published
Analyst, 2006,131, 1332-1334
Permissions
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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