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Time-resolved study of the plasma produced from animal muscle tissue using a Nd:YAG laser

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Abstract

This paper reports studies on time-resolved laser induced breakdown spectroscopy (LIBS) of plasmas induced by Nd:YAG laser pulses on a sample lyophilized from swine muscle tissue. Samples were measured under vacuum conditions (0.1 Pa), and the laser was operated at 1064 nm, with 6–9 ns laser pulses. The behavior of specific neutral and ionized emission lines of K, Mg, Mg+, H, and O as well as molecular bands such as CN (B2Σ+X2Σ+), C2 (d3Πga3Πu), NH (A3Π–X3Σ) and N2 (c3ΠuB3Πg) was characterized. Spectroscopic diagnostics were used to determine the time-resolved electron density and excitation temperatures. This work complements our previous studies by comparing the different mechanisms of plasma formation depending on the source of excitation, both Nd:YAG and transversely excited atmospheric (TEA) CO2 lasers. Plasma parameters, electron densities and vibrational temperatures of CN were measured from the temporal analysis of Nd:YAG induced plasma and were compared with the TEA-CO2 induced plasma results. In addition, complementary Scanning Electron Microscopy (SEM) combined with Energy-Dispersive X-ray (EDX) spectroscopy and LIBS has been performed to assess sample homogeneity.

Graphical abstract: Time-resolved study of the plasma produced from animal muscle tissue using a Nd:YAG laser

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Publication details

The article was received on 30 Jul 2018, accepted on 20 Aug 2018 and first published on 06 Sep 2018


Article type: Paper
DOI: 10.1039/C8JA00258D
Citation: J. Anal. At. Spectrom., 2018, Advance Article
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    Time-resolved study of the plasma produced from animal muscle tissue using a Nd:YAG laser

    S. Moncayo, A. Marín-Roldán, S. Manzoor, J. J. Camacho, V. Motto-Ros and J. O. Caceres, J. Anal. At. Spectrom., 2018, Advance Article , DOI: 10.1039/C8JA00258D

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