Articolo in rivista, 2014, ENG, 10.1016/j.sab.2014.07.011

Laser Induced Breakdown Spectroscopy of meteorites as a probe of the early solar system

Dell'Aglio M.; De Giacomo A.; Gaudiuso R.; De Pascale O.; Longo S.

CNR-IMIP, Via Amendola 122/D, 70126 Bari, Italy; Chemistry Department, University of Bari, Via Orabona 4, 70126 Bari, Italy; INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, Firenze, Italy

This paper presents an evaluation of Laser Induced Breakdown Spectroscopy (LIBS) as a technique for gathering data relevant to Solar System geophysics. Two test cases were demonstrated: elemental analysis of chondrules in a chondrite meteorite, and space- resolved analysis of the interface between kamacite and taenite crystals in an octahedrite iron meteorite. In particular most major and minor elements (Fe, Mg, Si, Ti, Al, Cr, Mn, Ca, Fe, Ni, Co) in Sahara 98222 (chondrite) and its chondrules, as well as the profile of Ni content in Toluca (iron meteorite), were determined with the Calibration Free (CF) method. A special attention was devoted to exploring the possibilities offered by variants of the basic technique, such as the use of Fe I Boltzmann distribution as an intensity calibration method of the spectroscopic system, and the use of spatially resolved analysis. © 2014 Elsevier B.V. All rights reserved.

Spectrochimica acta. Part B, Atomic spectroscopy 101 , pp. 68–75

Keywords

CF-LIBS, Elemental analysis, Meteorites, Space applications

CNR authors

De Giacomo Alessandro, Longo Savino, Gaudiuso Rosalba, De Pascale Olga, Dell Aglio Marcella

CNR institutes

NANOTEC – Istituto di Nanotecnologia