Study of spectrally resolved thermoluminescence in Tsarev and Chelyabinsk chondrites with a versatile high-sensitive setup

Autor: Ahmed Henaish, Ilya Weinstein, O. M. Hemeda, Alexander Vokhmintsev, Taher Sharshar
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Technology
THERMOLUMINESCENCE
Astrophysics
SPECTRUM CURVES
ordinary chondrite
Thermoluminescence
Physics - Geophysics
CHELYABINSK LL5
chemistry.chemical_compound
General Materials Science
Emission spectrum
Ordinary chondrite
Earth and Planetary Astrophysics (astro-ph.EP)
Physics
Microscopy
QC120-168.85
Condensed Matter - Materials Science
Chelyabinsk LL5
Tsarev L5
Engineering (General). Civil engineering (General)
Meteorite
SPECTRAL FEATURE
RADIATION-INDUCED
Electrical engineering. Electronics. Nuclear engineering
TA1-2040
Astrophysics - Instrumentation and Methods for Astrophysics
Physics - Optics
ORDINARY CHONDRITE
FOS: Physical sciences
EMISSION SPECTROSCOPY
Kinetic energy
Article
WEAK INTENSITY
Chondrite
THERMOLUMINESCENCE SPECTROSCOPY
EMISSION SPECTRUMS
SILICATES
Instrumentation and Methods for Astrophysics (astro-ph.IM)
TL SPECTROSCOPY
TSAREV L5
METEORITES
QH201-278.5
ACTIVATION ENERGY
Materials Science (cond-mat.mtrl-sci)
ORDINARY CHONDRITES
Silicate
Geophysics (physics.geo-ph)
TK1-9971
STONY METEORITES
activation energy
Descriptive and experimental mechanics
chemistry
Substructure
TL spectroscopy
Optics (physics.optics)
Astrophysics - Earth and Planetary Astrophysics
Zdroj: Materials, Vol 14, Iss 6518, p 6518 (2021)
Materials
Volume 14
Issue 21
Mater.
Popis: Thermoluminescence (TL) research provides a powerful tool for characterizing radiation-induced processes in extraterrestrial matter. One of the challenges in studying the spectral features of the natural TL of stony meteorites is its weak intensity. The present work showcases the capabilities of a high-sensitive original module for measuring the spectrally resolved TL characteristics of the Chelyabinsk and Tsarev chondrites. We have analyzed the emission spectra and glow curves of natural and induced TL over the 300 - 650 nm and RT - 873 K ranges. A quasi-continuous distribution of traps active within the 350 - 650 K range was found in the silicate substructure of both meteorites under study. Based on the general order kinetic formalism and using the natural TL data, we also estimated the activation energies of 0.86 and 1.08 eV for the Chelyabinsk and Tsarev chondrites, respectively.
7 pages, 4 figures, 2 tables, 18 references; Keywords: TL spectroscopy; ordinary chondrite; Chelyabinsk LL5; Tsarev L5; activation energy
Databáze: OpenAIRE
Externí odkaz: