Lithium analysis using a double-sided silicon strip detector at LIBAF

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Abstract

Quantification and mapping possibilities of lithium in geological material, by Nuclear Reaction Analysis (NRA), was evaluated at the Lund Ion Beam Analysis Facility (LIBAF). LiF and two Standard Reference Materials, (SRM 610 and SRM 612) were used in the investigation. The main part of the data was obtained at the beam energy 635keV studying the high Q-value reaction 7Li(p, α)4He, but reaction yield and detection limits were also briefly investigated as a function of the energy. A double-sided silicon strip detector (DSSSD) was used to detect the α-particles emitted in the reaction in the backward direction. The combination of the high Q-value, a reasonably good cross-section and the possibility to use a high beam current have been demonstrated to allow for measurement of concentrations down below 50ppm. Proton energies below 800keV were demonstrated to be appropriate energies for extracting lithium in combination with boron analysis.

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Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics

Keywords

  • Double-sided silicon strip detector, Lithium microanalysis, Nuclear microprobe, Nuclear Reaction Analysis
Original languageEnglish
Pages (from-to)29-33
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume404
Early online date2017 Feb 20
Publication statusPublished - 2017 Aug
Publication categoryResearch
Peer-reviewedYes