Plasma Spectroscopy of Various Types of Gypsum: An ideal Terrestrial Analogue

Abhishek, K.; Pati, Jayanta Kumar; Parigger, Christian G.; Awadhesh, K.

doi:10.20944/preprints201907.0033.v1

Cited by 3 publications

(1 citation statement)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An earlier study on Dergaon meteorite reported the presence of noble gases and some light elements as well [2]. At a suitable gate delay the signature of the molecular emission are also expected to be observed with LIBS [21,22]. Our experimental result reveal that the concentration of Fe and O in the present sample is in appreciable amount i.e.…”

Section: Elementssupporting

confidence: 71%

Plasma Spectroscopic Study of Dergaon Meteorite, India

Abhishek¹,

Pati²,

Parigger³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Meteorites represent the recoverable portions of asteroids occurring between Mars and Jupiter within the solar system that reach the surface of the Earth. Meteorites are rare extraterrestrial objects studied extensively to improve understanding of planetary evolution. In this work, calibration-free laser-induced breakdown spectroscopy (CF-LIBS) evaluates quantitative elemental and molecular analysis of the Dergaon meteorite, an H 4-5 chondrite fall sample, Assam, India. Spectral signatures of H, N, O, Na, Mg, Al, Si, P, K, Ca, Ti, Cr, Mn, Fe, Co, Ni, Ir, are measured. Along with the atomic emission, this work reports as well molecular emission from FeO molecules. The concentration of the measured elements obtained using CF-LIBS are in close agreement with earlier reports. The elements H, N and O and their concentrations are estimated using CF-LIBS for the first time. This study applies laser spectroscopy to establish presence of Ni, Cr, Co, and Ir in meteorites. Elemental analysis forms the basis for establishment of potential molecular composition of the Dergaon meteorite. Moreover, the elemental analysis approach bodes well for in-situ analyses of extraterrestrial objects including applications in planetary rover missions.

show abstract

Section: Elementssupporting

confidence: 71%

Plasma Spectroscopic Study of Dergaon Meteorite, India

Abhishek¹,

Pati²,

Parigger³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

Rapid Analysis of Chemical Composition and Physical Properties of Gemstones Using LIBS and Chemometric Technique

et al. 2021

View full text Add to dashboard Cite

Laser-induced breakdown spectroscopy (LIBS), accompanied by chemometric data analysis, is used to identify and classify gemstones of various hardness. The study involves several gemstones: amethyst, aquamarine beryl, bloodstone citrine, diopside, and enstatite. Their hardness is determined through a correlation utilizing the spectral intensity ratio of the ionic to atomic spectral lines of an identified element in the LIB spectrum. The result of the relative hardness obtained from the LIBS analysis is in good agreement with the hardness measured from Mohs’s scale of hardness, a popular qualitative method to determine hardness. In this work, a linear relationship has been established between the Mohs’s hardness and the plasma excitation temperature. Thus, the hardness of the gemstones can be determined with the help of plasma excitation temperature. Moreover, the analysis of trace elements in LIB spectral data reveals that a particular element is responsible for the colors of gemstones. Therefore, the relative concentration of constituents is calculated for all gemstones and compared. Principal component analysis (PCA) is successfully applied to all gemstone spectra for rapid classification and discrimination based on their variable elemental concentrations and respective hardness.

show abstract

The Plasma Spectroscopic Study of Dergaon Meteorite, India

et al. 2020

View full text Add to dashboard Cite

Meteorites are the recoverable portions of asteroids that reach the surface of the Earth. Meteorites are rare extraterrestrial objects studied extensively to improve our understanding of planetary evolution. In this work, we used calibration-free laser-induced breakdown spectroscopy (CF-LIBS) to evaluate the quantitative elemental and molecular analyses of the Dergaon meteorite, a H 4-5 chondrite fall sample from Assam, India. Spectral signatures of H, N, O, Na, Mg, Al, Si, P, K, Ca, Ti, Cr, Mn, Fe, Co, Ni, andIrweredetected. Along with the atomic emission, this work reports the molecular emission from FeO molecules. The concentration of the measured elements obtained using CF-LIBS is in close agreement with earlier reports. The elements H, N, and O and their concentrations are estimated by using CF-LIBS for the first time. This study applies laser spectroscopy to establish the presence of Ni, Cr, Co, and Ir in meteorites. The elemental analysis forms the basis for the establishment of the potential molecular composition of the Dergaon meteorite. Moreover, the elemental analysis approach bodes well for in-situ analyses of extraterrestrial objects including applications in planetary rover missions.

show abstract

Plasma Spectroscopy of Various Types of Gypsum: An ideal Terrestrial Analogue

Cited by 3 publications

References 17 publications

Plasma Spectroscopic Study of Dergaon Meteorite, India

Plasma Spectroscopic Study of Dergaon Meteorite, India

Rapid Analysis of Chemical Composition and Physical Properties of Gemstones Using LIBS and Chemometric Technique

The Plasma Spectroscopic Study of Dergaon Meteorite, India

Contact Info

Product

Resources

About