G. López-Reyes
A5022116869- Planetary Science and Exploration
- Astro and Planetary Science
- Laser-induced spectroscopy and plasma
- Spectroscopy Techniques in Biomedical and Chemical Research
- Space Exploration and Technology
- Isotope Analysis in Ecology
- Spaceflight effects on biology
- Space Science and Extraterrestrial Life
- Spacecraft and Cryogenic Technologies
- Spectroscopy and Chemometric Analyses
- Geochemistry and Geologic Mapping
- Geology and Paleoclimatology Research
- Spacecraft Design and Technology
- Nuclear Physics and Applications
- Methane Hydrates and Related Phenomena
- Space exploration and regulation
- Hydrocarbon exploration and reservoir analysis
- Calibration and Measurement Techniques
- Advanced Chemical Sensor Technologies
- Geological and Geochemical Analysis
- Astronomical Observations and Instrumentation
- Paleontology and Stratigraphy of Fossils
- Water Quality Monitoring and Analysis
- Atmospheric Ozone and Climate
- Ion-surface interactions and analysis
Universidad de Valladolid
2016-2025
Centro de Astrobiología
2011-2022
Instituto Nacional de Técnica Aeroespacial
2015-2022
Universidad Nacional Autónoma de México
2020
Consejo Superior de Investigaciones Científicas
2013-2015
The Raman Laser Spectrometer (RLS) on board the ESA/Roscosmos ExoMars 2020 mission will provide precise identification of mineral phases and possibility to detect organics Red Planet. RLS work powdered samples prepared inside Pasteur analytical suite collected surface subsurface by a drill system. spectroscopy is well-known technique based inelastic scattering matter incident monochromatic light (the effect) that has many applications in laboratory industry, yet be used space applications....
Abstract On the NASA 2020 rover mission to Jezero crater, remote determination of texture, mineralogy and chemistry rocks is essential quickly thoroughly characterize an area optimize selection samples for return Earth. As part Perseverance payload, SuperCam a suite five techniques that provide critical complementary observations via Laser-Induced Breakdown Spectroscopy (LIBS), Time-Resolved Raman Luminescence (TRR/L), visible near-infrared spectroscopy (VISIR), high-resolution color imaging...
Before Perseverance, Jezero crater's floor was variably hypothesized to have a lacustrine, lava, volcanic airfall, or aeolian origin. SuperCam observations in the first 286 Mars days on revealed and intrusive terrain with compositional density stratification. The dominant lithology along traverse is basaltic, plagioclase enrichment stratigraphically higher locations. Stratigraphically lower, layered rocks are richer normative pyroxene. lowest observed unit has highest inferred olivine-rich...
Abstract Before the Perseverance rover landing, acoustic environment of Mars was unknown. Models predicted that: (1) atmospheric turbulence changes at centimetre scales or smaller point where molecular viscosity converts kinetic energy into heat 1 , (2) speed sound varies surface with frequency 2,3 and (3) high-frequency waves are strongly attenuated distance in CO 2 (refs. 2–4 ). However, theoretical models were uncertain because a lack experimental data low pressure difficulty to...
Abstract Perseverance explored two geological units on the floor of Jezero Crater over first 420 Martian days Mars2020 mission. These units, Máaz and Séítah formations, are interpreted to be igneous in origin, with traces alteration. We report detection carbonate phases along rover traverse based laser‐induced breakdown spectroscopy (LIBS), infrared reflectance (IRS), time‐resolved Raman (TRR) by SuperCam instrument. Carbonates identified through direct vibrational modes CO 3 functional...
Abstract Séítah is the stratigraphically lowest formation visited by Perseverance in Jezero crater floor. We present data obtained SuperCam: texture imagery, chemistry Laser‐Induced Breakdown Spectroscopy, and mineralogy Supercam Visible Infrared reflectance Raman spectroscopy. The consists of igneous, weakly altered rocks dominated millimeter‐sized grains olivine with presence low‐Ca high‐Ca pyroxenes, other primary minerals (e.g., plagioclase, Cr‐Fe‐Ti oxides, phosphates). Along a ∼140 m...
Abstract Identifying unequivocal signs of life on Mars is one the most important objectives for sending missions to red planet. Here we report Red Stone, a 163-100 My alluvial fan–fan delta that formed under arid conditions in Atacama Desert, rich hematite and mudstones containing clays such as vermiculite smectites, therefore geologically analogous Mars. We show Stone samples display an number microorganisms with unusual high rate phylogenetic indeterminacy, what refer “dark microbiome”,...
Raman spectroscopy can be used for analysing both mineral and organic phases, thus allowing characterisation of the microbial‐scale geological context as well search possible traces life. This method is therefore very useful in situ planetary exploration missions. Compared with myriad sample preparation techniques available terrestrial laboratories, possibilities during missions on other bodies are extremely limited generally restricted to abrasion rock surfaces or crushing target samples....
The Perseverance rover is exploring Jezero crater on Mars since February 2021. SuperCam instrument part of the scientific payload, combining five different techniques in order to characterize targets sample: LIBS (Laser-Induced Breakdown Spectroscopy), Raman and Visible Infrared (VISIR) spectroscopies, Sound Recording a colored Imager. Thirty-six calibration have been developed for this instrument. Twenty-three these are dedicated technique, corresponding rocks and/or minerals. VISIR...
Raman spectroscopy is a very powerful analytical technique with an increasing acceptance in the scientific community. For optimization of acquisition, two main parameters, integration time and number accumulations, need to be adjusted sample under analysis, as sample, or even different spots on same can provide responses one from another. In this paper, we present suite algorithms automate acquisition parameter adjustment addressing issues such spectral saturation, fluorescence, cosmic ray...
Abstract The Mastcam-Z Camera is a stereoscopic, multispectral camera with zoom capability on NASA’s Mars-2020 Perseverance rover. relies set of two deck-mounted radiometric calibration targets to validate performance and provide an instantaneous estimate local irradiance allow conversion image data units reflectance (R ∗ or I/F) tactical timescale. Here, we describe the heritage, design, optical characterization these discuss their use during rover operations. primary target inherits...
Abstract Mineralogy is the key to understanding origin of Phobos and its position in evolution Solar System. In situ Raman spectroscopy on an important tool achieve scientific objectives Martian Moons eXploration (MMX) mission, maximize merit sample return by characterizing mineral composition heterogeneity surface Phobos. Conducting harsh environment requires a very sensitive, compact, lightweight, robust instrument that can be carried compact MMX rover. this context, spectrometer for...
Abstract This work aims to evaluate whether the multi-point analysis ExoMars Raman Laser Spectrometer (RLS) will perform on powdered samples could serve classify ultramafic rocks Mars. To do so, RLS Simulator was used study terrestrial analogues of Martian peridotites and pyroxenites by applying operational constraints spectrometer onboard Rosalind Franklin rover. Besides qualitative analysis, RLS-dedicated calibration curves have been built estimate relative content olivine pyroxenes in...
The SuperCam instrument, onboard the Perseverance rover (Mars 2020 mission) is designed to perform remote analysis on Martian surface employing several spectroscopic techniques such as Laser Induced Breakdown Spectroscopy (LIBS), Time-Resolved Raman (TRR), Fluorescence (TRF) and Visible Infrared (VISIR) reflectance. In addition, also acquires high-resolution images using a color micro-imager (RMI) well sounds with its microphone. has three main subsystems, Mast Unit (MU) where laser for...
A detailed vibrational Raman-IR spectroscopic and diffractional analyses have been performed on basalts from two locations Tenerife Island: (1) the Arenas Negras volcano which belongs to historical eruption not showing visible alteration (2) Pillow Lavas zone Anaga Massif shows a clearly fluid-rock interaction caused by submarine alteration. These places extensively studied due its similarity with surface of Mars. The analysis is based mineral detection selected samples Micro-Raman study...
Abstract The ExoMars rover, scheduled to be launched in 2020, will equipped with a novel and diverse payload. It also include drill collect subsurface samples (from 0‐ 2‐m depth) deliver them the rover analytical laboratory, where it possible perform combined science between instruments. For first time, exact same sample target areas investigated using complementary methods—infrared spectrometry, Raman laser desorption mass spectrometry—to establish mineralogical organic chemistry...
Abstract Raman and laser‐induced breakdown spectroscopy (LIBS) spectroscopies will play an important role in planetary exploration missions the following years, not only with instruments like laser spectrometer on board of Rosalid Franklin Rover or scanning habitable environments luminescence for organics chemicals Mars2020 but also combined such as SuperCam. These techniques be part upcoming because they can provide complementary information from analysed sample while potentially sharing...
We have built three multivariate analysis mathematical models based on principal component (PCA), partial least squares (PLS), and artificial neural networks (ANNs) to detect sulfate minerals in geological samples from laser Raman spectral data. critically assessed the potential of automatically quantify abundance selected Ca-, Fe-, Na-, Mg-sulfates binary mixtures. Samples were analyzed using a laboratory version spectrometer (RLS) instrument onboard European Space Agency 2018 ExoMars...