Extension of the plasma radiation database PARADE for the analysis of meteor spectra

Loehle, Stefan; Eberhart, Martin; Zander, Fabian; Meindl, Arne; Rudawska, Regina; Koschny, D.; Zender, Joe; Dantowitz, Ron; Jenniskens, Peter

doi:10.1111/maps.13622

Cited by 11 publications

(9 citation statements)

References 25 publications

(26 reference statements)

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“…While the number of gaseous elements was originally restricted to the main atmospheric constituents of the atmospheres of Titan, Earth, and Mars, several new species have been added to support our spectral analysis activities for the CILBO acquired spectra. A detailed discussion is given in Loehle et al (2021), extending the available species to include Na, K, Ti, V, Cr, Mn, Fe, Ca, Ni, Co, and Li. The positional information of an emission (or absorption) line is defined by the energy gap between the electron excitation levels as defined by, e.g., Herzberg (1950).…”

Section: The Plasma Radiation Databasementioning

confidence: 99%

Spectral observations at the Canary Island Long-Baseline Observatory (CILBO): calibration and datasets

Zender¹,

Koschny²,

Rudawska³

et al. 2023

Geosci. Instrum. Method. Data Syst.

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Abstract. The Canary Island Long-Baseline Observatory (CILBO) is a double-station meteor camera setup located on the Canary Islands operated by ESA's Meteor Research Group since 2010. Observations of meteors are obtained in the visual wavelength band by intensified video cameras from both stations, supplemented by an intensified video camera mounted with a spectral grating at one of the locations. The cameras observe during cloudless and precipitation-free nights, and data are transferred to a main computer located at ESA/ESTEC once a day. The image frames that contain spectral information are calibrated, corrected, and finally processed into line intensity profiles. An ablation simulation, based on Bayesian statistics using a Markov chain Monte Carlo method, allows determining a parameter space, including the ablation temperatures, chemical elements, and their corresponding line intensities, to fit against the line intensity profiles of the observed meteor spectra. The algorithm is presented in this paper and one example is discussed. Several hundred spectra have been processed and made available through the Guest Archive Facility of the Planetary Science Archive of ESA. The data format and metadata are explained.

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Section: The Plasma Radiation Databasementioning

confidence: 99%

Spectral observations at the Canary Island Long-Baseline Observatory (CILBO): calibration and datasets

Zender¹,

Koschny²,

Rudawska³

et al. 2023

Geosci. Instrum. Method. Data Syst.

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“…Published data on the re-entry from low earth orbit is limited, the only data known to the authors is of the observations campaigns of ATV-1 [28,29] and Cygnus OA-6 [2,30]. During the re-entry observation of the CYGNUS OA-6 spacecraft, sodium and lithium were detected.…”

Section: Analysis and Comparison To Flightmentioning

confidence: 99%

Spectral Features for Re-entry Break-up Event Identification

Leiser¹,

Löhle²,

Fasoulas³

2022

Preprint

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The fragmentation of two aerospace aluminum alloys is investigated in a ground testing facility including mechanical loads as occurring due to aerodynamic forces in a real atmospheric entry event at three trajectory points. The emission spectroscopic analysis shows that these materials fail after distinct alkali metal features are observed in the spectra. The two alloys feature characteristic emissions of the different alkali metals. The presence of lithium lines that have previously been exclusively attributed to battery failure in observation campaigns may be considered as a marker for aluminum breakup. This is particularly interesting for future entry observations because it allows a new insight into the structural failure processes of the demising spacecraft. The lack of emission of alloying elements points to these spectra being a candidate for the determination of spacecraft demise. The identification of such features in ground testing will allow a more certain identification of specific break-up events.

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“…While the number of gaseous elements was originally restricted to the main atmospheric constituents of the atmospheres of Titan, Earth, and Mars, several new species has been added to support our spectral analysis activities for the CILBO acquired spectra. A detailed discussion is given in Loehle et al (2021) extending the available species to include Na, K, Ti, V, Cr, Mn, Fe, Ca, Ni, Co and Li. The positional information of an emission (or absorption) line is defined by the energy gap between the electron excitation levels as defined by e.g.…”

Section: The Plasma Radiation Databasementioning

confidence: 99%

“…For molecules, the vibration and rotation of the nuclei are additional parameters to consider. A simple radiation model for diatomic molecules based on a Boltzmann distribution of the vibrational bands and under the assumption of thermal equilibrium, is presented in Equation 15 (Loehle et al, 2021).…”

Section: The Plasma Radiation Databasementioning

confidence: 99%

“…The PARADE tool allows to compute the radiative emission of gas species by calculating the line position, its intensity and distribution, i.e. the line profile (Herzberg, 1950;Loehle et al, 2021;Rudawska et al, 2020) for a given temperature and given number density of a selected gas species.…”

Section: Optimization Of the Spectral Fitting Using The Bayesian Meth...mentioning

confidence: 99%

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Spectral Observations at the CILBO Observatory: Calibration and Data Sets

Zender

Koschny

Rudawska

et al. 2022

Preprint

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Abstract. The Canary Island Long-Baseline Observatory (CILBO) is a double station meteor camera setup located on the Canary Islands and operated by ESA’s Meteor Research Group since 2010. Observations of meteors are obtained in the visual wavelength band by intensified video cameras from both stations, supplemented by an intensified video camera mounted with a spectral grating at one of the locations. The cameras observe during cloudless and precipitation-free nights and data are transferred to a main computer located at ESA/ESTEC once a day. The image frames that contain spectral information are calibrated, corrected, and finally processed into line intensity profiles. An ablation simulation, based on Bayesian statistics using a Markov-Chain Monte-Carlo method, allows to determine a parameter space, including the ablation temperatures, chemical elements and their corresponding line intensities, to fit against the line intensity profiles of the observed meteor spectra. The algorithm is presented in this paper and one example is discussed. Several hundred spectra have been processed and made available through the Guest Archive Facility of the Planetary Science Archive of ESA. The data format and meta-data are explained.

show abstract

Extension of the plasma radiation database PARADE for the analysis of meteor spectra

Cited by 11 publications

References 25 publications

Spectral observations at the Canary Island Long-Baseline Observatory (CILBO): calibration and datasets

Spectral observations at the Canary Island Long-Baseline Observatory (CILBO): calibration and datasets

Spectral Features for Re-entry Break-up Event Identification

Spectral Observations at the CILBO Observatory: Calibration and Data Sets

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