Il set-up è costituita da un interferometro a trasformata di Fourier allineato otticamente con una camera per simulazioni di atmosfere planetarie denominata PASSxS (Planetary Atmosphere Simulation System for Spectroscopy). L'apparato sperimentale permette di studiare le proprietà ottiche dei gas tipici delle atmosfere planetarie variando la pressione da circa 10 mbar ad oltre 70 bar e la temperatura da circa 100 fino a 600K. Grazie ad una cella multi-passo inserita internamente alla camera, caratterizzata da un cammino ottico di circa 10m, possiamo apprezzare assorbimenti dell’ordine dei 10-5 cm-1. Le trasmittanze possono essere acquisite nel range spettrale che si estende dal visibile all’ infrarosso (0.5-8.0) micron.
The experimental set-up is composed by a special designed chamber, named PASS (Planetary Atmosphere Simulation System), suitable to be coupled to a Fourier Transform-InfraRed (FT-IR) spectrometer, or working as a stand-alone Cavity Ring Down (CRD) system and it is designed to sustain pressures in a range from vacuum up to 70 bars and temperatures ranging from 100 up to 500 K. When coupled with a FT-IR spectrometer, the chamber can be equipped with a Multi Pass (MP) absorption gas cell, characterized by an optical path of about 9 m, mounted internally. The absorption coefficients of the gases can be measured in a wide spectral range (0.4-8)microns with a spectral resolution pre-set from 0.07 to 10 cm-1.
Origine ed evoluzione dei pianeti, satelliti e corpi minori
Bioastronomia, Astrobiologia e Astrofisica di laboratorio
Tecnologie per la Planetologia
Team Summary
15. Personale INAF coinvolto
Numero di partecipanti INAF al progetto: 4
Struttura
Nfte
N0
TI 2024
TI 2025
TI 2026
TD 2024
TD 2025
TD 2026
Nex
Extra
IAPS ROMA
4
0
0.50
0.60
0.40
0
0
0
1
0.10
Totali
4
0
0.50
0.60
0.40
0.00
0.00
0.00
1
0.10
16. Personale Associato INAF coinvolto
Numero di partecipanti Associati INAF: 1
#
Struttura
TI 2024
TI 2025
TI 2026
TD 2024
TD 2025
TD 2026
Extra
1
CNR-ISAC
0.10
0.10
0.00
0
0
0
0.00
Totali
0.10
0.10
0.00
0.00
0.00
0.00
0.00
Fondi a sostegno
21. Totale fondi a disposizione (dato aggregato, k€)
Certi 2024
Certi 2025
Certi 2026
Presunti 2024
Presunti 2025
Presunti 2026
0
0
0
0
0
0
Produzione scientifica e tecnologica
22. Produzione scientifica e tecnologica - Highlights
#
DOI
Descrizione
Azione
1
https://doi.org/10.1016/j.jqsrt.2012.11.019
Titolo: Experimental CO2 absorption coefficients at high pressure and high temperature
Autori:Stefania Stefani and Giuseppe Piccioni and Marcel Snels and Davide Grassi and Alberto Adriani
Publisher:Elsevier BV
Rivista: Journal of Quantitative Spectroscopy and Radiative Transfer
Anno pubblicazione:2013
2
https://doi.org/10.1016/j.jqsrt.2017.09.024
Titolo: Temperature dependence of collisional induced absorption (CIA) bands of CO2 with implications for Venus' atmosphere
Autori:Stefania Stefani and Marcel Snels and Giuseppe Piccioni and Davide Grassi and Alberto Adriani
Publisher:Elsevier BV
Rivista: Journal of Quantitative Spectroscopy and Radiative Transfer
Anno pubblicazione:2018
3
https://doi.org/10.1016/j.jqsrt.2010.11.021
Titolo: Measurements and modelling of high pressure pure CO2 spectra from 750 to 8500cm-1. I\textemdashcentral and wing regions of the allowed vibrational bands
Autori:H. Tran and C. Boulet and S. Stefani and M. Snels and G. Piccioni
Publisher:Elsevier BV
Rivista: Journal of Quantitative Spectroscopy and Radiative Transfer
Anno pubblicazione:2011
4
https://doi.org/10.5194/amt-14-7187-2021
Titolo: Asimulation chamber for absorption spectroscopy in planetary atmospheres
Autori: M. Snels, S. Stefani, G. Piccioni, D. Biondi end A. Boccaccini
publisher: Atmos. Meas. Tech., 14, 7187–7197, 2021
5
Presentation COSPAR 2022
Titolo: Planetary Atmosphere Simulation System for Spectroscopy (PASSxS), a laboratory set up used to characterize the optical properties of gases at typical planetary conditions
Autori: S. Stefani, G. Piccioni, M. Snels, D. Biondi and A. Boccaccini
6
Presentazione 5th Chianti TOPICS ATMOSHERES
Titolo: Planetary Atmosphere Simulation System for Spectroscopy (PASSxS), a laboratory set up used to characterize the optical properties of gases at typical planetary conditions
Autori: S. Stefani, G. Piccioni, M. Snels, D. Biondi and A. Boccaccini
7
http://dx.doi.org/10.20371/INAF/DS/2022_00005
CO2 Collisional Induced Absorption (CIA) database
Authors: S.Stefani, G. Piccioni, M. Snels, D. Biondi and A. Boccaccini
Abstract: This database is dedicated to the experimental CO2 collision induced absorption (CIA) bands in two spectral regions, [1100–1600] cm−1 and [2500–3150] cm−1. The spectra have been recorded by averaging 150 scans with a resolution of 2 cm−1 acquired for temperatures from 294 to 473 K and at pressures ranging from 1 to 40 bar. The absorption coefficients (cm-1) published in this data base have been divided in five folders, named according to the temperatures at the which the spectra have been acquired. Each folders contains two directories, the ‘’main’’ and ‘’divided’’. In the ‘’main’’ the row data can be downloaded while in the ‘’divided’’ the ascii files related to the two spectral range have been uploaded. In the last case, only a preliminary base line correction has been done, please note that some data, in between [1100-1660] cm-1 are affected by a strong water vapour absorption. The name of each file refers to the conditions (p, T) at the which the spectra have been measured.
8
http://dx.doi.org/10.20371/INAF/DS/2022_00002
Title: Experimental Absorption Coefficients of carbon dioxide at high pressure and high temperature
Authors: S.Stefani, G. Piccioni, M. Snels, D. Biondi and A. Boccaccini
Abstract: This data base is dedicated to the experimental CO2 absorption spectra, obtained according to a realistic vertical P-T profile, typical of the deep and middle atmosphere of Venus. These spectra have been recorded by using a Fourier Trans-form InfraRed (FT-IR) spectrometer , coupled with a gas cell, designed to support pressures up to 200 bar and temperatures up to about 600 K and characterized by an optical path of 2 cm. Each spectrum was acquired in the spectral range [800-1000] cm-1 with a resolution of 2 cm-1. In the data base on can been found the ascii file, divided by directories, ‘’middle latitude’’ and ‘’deep Atmosphere”. The name of each file refers to the conditions (p, T) at the which the spectra have been measured
Title: Preliminary results on the infrared H2-H2 and H2-He experimental collision
induced absorption coefficients
Abstract: The atmosphere of Jupiter is mainly
composed by molecular hydrogen and helium. The H2-
H2 and the H2-He Collision Induced Absorption (CIA)
represent one of the most important gaseous opacity
sources in the infrared range from 1 to 5 µm, a range
widely used by remote sensing instruments devoted to
study its atmosphere. For this reason a proper modelling along experimental data are of paramount importance in order to accurately perform absolute retrieval of abundances of minor species and estimation
of the atmospheric physical conditions from the observed radiance. In addition, a poor modelling of the CIA can alter the slopes of the synthetic spectra, impacting the retrieved mixing ratios of ammonia or aerosol properties, among the others. To overcome these limitations, we performed measurements of the CIA bands at the same or close to the physical conditions of the actual vertical atmospheric profile of Jupiter. In this work we report the preliminary results of this study
10
2022cosp...44..925S
Title: Planetary Atmosphere Simulation System for Spectroscopy (PASSxS), a laboratory set up used to characterize the optical properties of gases at typical planetary conditions
Abstract: The optical properties of gases at typical planetary conditions are of major importance to provide the input parameters to the radiative transfer models, especially in the regions where the present databases lack of information. The experimental data can support either the study of our solar system bodies and also contribute significantly to the understanding of the exoplanets spectroscopy. In this work we describe this experimental set up designed to measure the optical properties of gases such as CO2, CH4, H2, H2+He or their combinations, performed in an ample range of pressure and temperature. The experimental set-up is composed by a custom vacuum double chamber, perfectly designed to be coupled to a Fourier Transform-InfraRed (FT-IR) spectrometer. The chamber is designed to sustain pressures in a range from vacuum up to 70 bar and temperatures ranging from 100 up to 500 K. The chamber is equipped with a multi pass absorption gas cell, characterized by an optical path of about 9 m, mounted in the inner part. The inner chamber is inside another vacuum vessel able to insulate thermally the gas cell. Thanks to the FTIR, the absorption coefficients of the gases can be measured in a wide spectral range (1250 - 25000 cm-1) with a spectral resolution from 0.07 to 10 cm-1. In this work we describe the setup and present preliminary results of the CO2 Fermi Triade bands measured in the IR spectral region at different densities and temperatures.
Informazioni Pubbliche
L'attività scientifica che si propone, è considerata un'attività trasversale che copre più campi di interesse, tra i principali, possiamo elencare: Planetary Science; Solar System Planets; Atmospheric science; Exoplanet atmospheres; Exoplanet atmospheric composition
L'istituto IAPS di Roma da più di 10 anni ha un ruolo primario nello svolgimento degli esperimenti di laboratorio su gas tipici delle atmosfere planetarie, quali CO<sub>2</sub>, H<sub>2</sub>, H<sub>2</sub>-He e H<sub>2</sub>-He-CH<sub>4</sub>, condotte a condizioni di bassa/alta pressione (10mbar/70 bar) ed alta/bassa temperatura (100-600K). Sono stati <span style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; font-size: 1rem; font-family: "Segoe UI", sans-serif;">creati due data base spettroscopici (si vedano
allegati) che contengono i coefficienti di assorbimento ottenuti, ricreando in
laboratorio, le stesse condizioni di alta pressione ed alta temperatura che
caratterizzano l’atmosfera Venusiana. Sono state studiate in dettaglio, al
variare della temperatura, le così dette bande proibite dell’anidride
carbonica, responsabili dell’effetto serra che ha un forte impatto sulla
climatologia del pianeta Venere. Inoltre, è stato sviluppato, per la prima
volta, un programma per la modellizzazione delle bande esperimentali acquisite
variando la pressione della CO</span><sub style="font-family: var(--bs-font-sans-serif);"><span style="font-size: 9pt; line-height: 107%; font-family: "Segoe UI", sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">2</span></sub><span style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; font-size: 1rem; font-family: "Segoe UI", sans-serif;"> da circa 2 a circa 50 bar e la temperatura da 300 a
circa 600K. </span><p class="MsoNormal"><o:p></o:p></p>
IAPS-Roma
15. Team members, Informazioni generali
15. Personale INAF coinvolto
#
Nome
E-mail
Struttura
TI
Qualifica
Ruolo nel Progetto
FTE Impegnate (2024/2025/2026)
FTE Presunte (2024/2025/2026)
Extra
1
stefania.stefani
stefania.stefani@inaf.it
IAPS ROMA
Y
PRIMO TECNOLOGO
Gestione facility test e misure
X X X
X X X
X
2
david.biondi
david.biondi@inaf.it
IAPS ROMA
Y
C.T.E.R.
PLAB Hardware and Software D&D
X X X
X X X
X
3
angelo.boccaccini
angelo.boccaccini@inaf.it
IAPS ROMA
Y
C.T.E.R.
PLAB AIT and AIV
X X X
X X X
X
4
giuseppe.piccioni
giuseppe.piccioni@inaf.it
IAPS ROMA
Y
DIRIGENTE DI RICERCA
PLAB Manager
X X X
X X X
X
16. Personale Associato INAF coinvolto
#
Nome
E-mail
Struttura
TI
Qualifica
Ruolo nel Progetto
FTE Impegnate (2024/2025/2026)
FTE Presunte (2024/2025/2026)
Extra
1
marcel.snels
m.snels@isac.cnr.it
CNR-ISAC
Y
Dirigente di Ricerca
Collaboratore misure e test
[0.1, 0.1, 0]
[-1.0, -1.0, -1.0]
-1.0
21. Fondi a Sostegno Iniziativa
I fondi a supporto dell'attività scientifica fanno riferimento a fondi esterni e non a fondi istituzionali
