Compositional studies of functional orthodontic archwires using prompt-gamma activation analysis at a pulsed neutron source

Kun V. Tian, Giulia Festa, L. Szentmiklósi, Boglárka Maróti, Laura Arcidiacono, Giuseppina Laganà, Carla Andreani, Silvia Licoccia, Roberto Senesi, Paola Cozza

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Prompt-gamma activation analysis (PGAA) measurements were carried out at the ISIS Spallation Neutron Source on two sets of functional commercial stainless steel orthodontic archwires, aiming at providing insights into the elemental and isotopic composition differences of two nominally equivalent archwires. The results were compared to those obtained from parallel cold neutron PGAA measurements on the same samples at the Budapest Neutron Centre in order to test the current status of PGAA at a pulsed neutron source and eventually to inform improvement in set-up and acquisition methods. In addition, time-resolved PGAA (T-PGAA) that combines PGAA and neutron time-of-flight methods was applied to the present set of samples, allowing the measurement of the neutron energy dependence of the PGAA spectra. The advantages of this technique were demonstrated to be that through incident neutron energy selection, spanning 0.07-67.94 eV, enhancement or decrease of specific gamma lines associated with isotopes of interest could be achieved. These were shown to reduce peak interference and to increase the signal-to-background ratio for certain species in order to facilitate accurate elemental identification. Suggestions for potential performance improvement for this evolving technique are proposed.

Original languageEnglish
Pages (from-to)1420-1427
Number of pages8
JournalJournal of Analytical Atomic Spectrometry
Volume32
Issue number7
DOIs
Publication statusPublished - Jul 1 2017

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Activation analysis
Neutron sources
Neutrons
Stainless Steel
Isotopes
Chemical analysis

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Compositional studies of functional orthodontic archwires using prompt-gamma activation analysis at a pulsed neutron source. / Tian, Kun V.; Festa, Giulia; Szentmiklósi, L.; Maróti, Boglárka; Arcidiacono, Laura; Laganà, Giuseppina; Andreani, Carla; Licoccia, Silvia; Senesi, Roberto; Cozza, Paola.

In: Journal of Analytical Atomic Spectrometry, Vol. 32, No. 7, 01.07.2017, p. 1420-1427.

Research output: Contribution to journalArticle

Tian, KV, Festa, G, Szentmiklósi, L, Maróti, B, Arcidiacono, L, Laganà, G, Andreani, C, Licoccia, S, Senesi, R & Cozza, P 2017, 'Compositional studies of functional orthodontic archwires using prompt-gamma activation analysis at a pulsed neutron source', Journal of Analytical Atomic Spectrometry, vol. 32, no. 7, pp. 1420-1427. https://doi.org/10.1039/c7ja00065k
Tian, Kun V. ; Festa, Giulia ; Szentmiklósi, L. ; Maróti, Boglárka ; Arcidiacono, Laura ; Laganà, Giuseppina ; Andreani, Carla ; Licoccia, Silvia ; Senesi, Roberto ; Cozza, Paola. / Compositional studies of functional orthodontic archwires using prompt-gamma activation analysis at a pulsed neutron source. In: Journal of Analytical Atomic Spectrometry. 2017 ; Vol. 32, No. 7. pp. 1420-1427.
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