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Title: Resonance ionization mass spectrometric study of the promethium/samarium isobaric pair

Abstract

Samarium daughters are problematic in isotope ratio measurements of promethium because they are isobaric. Resonance ionization mass spectrometry was utilized to circumvent this problem. An ionization selectivity factor of at least 1000:1 has been measured for promethium over samarium at 584.6 nm. Resonance ionization spectra have been recorded for both elements over the 528-560 and 580-614 nm wavelength ranges.

Authors:
; ;
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (USA)
OSTI Identifier:
7004152
Report Number(s):
CONF-880435-9
ON: DE88008083
DOE Contract Number:
AC05-84OR21400
Resource Type:
Conference
Resource Relation:
Conference: 4. international symposium on resonance ionization spectroscopy and its applications, Gaithersburg, MD, USA, 10 Apr 1988
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; PROMETHIUM; RESONANCE IONIZATION MASS SPECTROSCOPY; SAMARIUM; MASS SPECTRA; ELEMENTS; MASS SPECTROSCOPY; METALS; RARE EARTHS; SPECTRA; SPECTROSCOPY; 400702* - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials

Citation Formats

Shaw, R.W., Young, J.P., and Smith, D.H. Resonance ionization mass spectrometric study of the promethium/samarium isobaric pair. United States: N. p., 1988. Web.
Shaw, R.W., Young, J.P., & Smith, D.H. Resonance ionization mass spectrometric study of the promethium/samarium isobaric pair. United States.
Shaw, R.W., Young, J.P., and Smith, D.H. 1988. "Resonance ionization mass spectrometric study of the promethium/samarium isobaric pair". United States. doi:.
@article{osti_7004152,
title = {Resonance ionization mass spectrometric study of the promethium/samarium isobaric pair},
author = {Shaw, R.W. and Young, J.P. and Smith, D.H.},
abstractNote = {Samarium daughters are problematic in isotope ratio measurements of promethium because they are isobaric. Resonance ionization mass spectrometry was utilized to circumvent this problem. An ionization selectivity factor of at least 1000:1 has been measured for promethium over samarium at 584.6 nm. Resonance ionization spectra have been recorded for both elements over the 528-560 and 580-614 nm wavelength ranges.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1988,
month = 1
}

Conference:
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  • Resonance ionization mass spectroscopy (RIMS) is used to eliminate isobaric interference when determining the isotopic abundances of an element. In this application, RIMS is applied to the determination of promethium with the removal of samarium interference. In particular, promethium-147 is separated form samarium-147 and samarium-152.
  • Pulsed laser single color 2 + 1 multiphoton ionization is used to eliminate isobaric interferences for lead and bismuth mixtures detected via resonance ionization mass spectrometry.
  • The demand to measure high dynamic range isotope ratios on small samples with resonance ionization mass spectrometry (RIMS) continues to increase. This paper discusses high ionization efficiency methods which can be applied to continuous wave (cw) RIMS to potentially achieve several tens of percent ionization efficiencies for certain elements. The primary technique under development to achieve this is an external laser cavity which can generate very high circulating laser powers. 12 refs., 3 figs.
  • Ionization spectra of the elements neodymium and samarium have been obtained over the wavelength range of 423-463 nm by using the technique of resonance ionization mass spectrometry (RIMS). These studies have been performed to determine the wavelengths at which ionization occurs under RIMS conditions. The observed wavelengths have been correlated where possible with allowed transitions between known electronic energy levels. RIMS have previously been applied to the measurement of isotope ratios of these rare earth elements using a single wavelength of excitation for each element. The fact that there are a number of effective wavelengths available should be of interestmore » to other workers in the RIMS field.« less
  • Ionization spectra of the elements neodymium and samarium have been obtained over the wavelength range of 423-463 nm by using the technique of resonance ionization mass spectrometry (RIMS). These studies have been performed to determine the wavelengths at which ionization occurs under RIMS conditions. The observed wavelengths have been correlated where possible with allowed transitions between known electronic energy levels. RIMS has previously been applied to the measurement of isotope ratios of these rare earth elements using a single wavelength of excitation for each element. The fact that there are a number of effective wavelengths available should be of interestmore » to other workers in the RIMS field.« less