TY - JOUR AU - Gyollai, Ildikó AU - Biri, Sándor AU - Juhász, Zoltán AU - Király, Csilla AU - Rácz, Richárd Péter AU - Rezes, Dániel AU - Sulik, Béla AU - Szabó, Máté Zoltán AU - Szalai, Zoltán AU - Szávai, P AU - Szklenár, Tamás AU - Kereszturi, Ákos TI - Raman–Infrared Spectral Correlation of an Artificially Space-Weathered Carbonaceous Chondrite Meteorite JF - MINERALS J2 - MINERALS-BASEL VL - 14 PY - 2024 IS - 3 SN - 2075-163X DO - 10.3390/min14030288 UR - https://m2.mtmt.hu/api/publication/34762210 ID - 34762210 AB - Raman and infrared measurements of the same locations were conducted on a northwest African (NWA) 10580 CO3 meteorite sample, before and after three proton irradiations (1 keV ion energy using 1011, 1014, and 1017 ion/cm2 fluent values), to simulate space weathering effects. In the case of Raman spectroscopy, both FWHM and peak positions of the major olivine and pyroxene bands changed after the irradiation, and the minor bands disappeared. In the FTIR spectra, the minor bands of olivine and pyroxene also disappeared; meanwhile, major IR bands of pyroxene remained visible, demonstrating both positive and negative peak shifts, and the olivines were characterised only by negative peak shifts. The olivines were characterised by negative FWHM changes for major bands, but positive FWHM changes for minor bands. The pyroxenes were characterised by elevated FWHM changes for minor bands after the irradiation. The disappearance of minor bands both of IR and Raman spectra indicates the amorphization of minerals. The negative peak shift in IR spectra indicates Mg loss for olivine and pyroxene, in agreement with the literature. The Raman spectra are characterised by positive peak shift and positive FWHM changes; the IR spectra are characterised by a negative peak shift. The Mg loss, which was detected by negative peak shifts of FTIR bands, may be caused by distortion of the crystal structure, which could be detected by a positive peak shift in Raman spectra. This joint observation and interpretation has not been formulated in the literature, but indicates further possibilities in the confirmation of mineral changes by different instruments. Shock alteration-based observations by other researchers could be used as a reference for irradiation experiments as irradiation makes a similar structural alteration, like a low-grade shock metamorphism. LA - English DB - MTMT ER - TY - JOUR AU - Gyollai, Ildikó AU - Biri, Sándor AU - Juhász, Zoltán AU - Király, Csilla AU - Pal, B.D. AU - Rácz, Richárd Péter AU - Rezes, Dániel AU - Sulik, Béla AU - Szabó, Máté Zoltán AU - Szalai, Zoltán AU - Szavai, P. AU - Szklenár, Tamás AU - Kereszturi, Ákos TI - Irradiation induced mineral changes of NWA10580 meteorite determined by infrared analysis JF - ASTRONOMY & ASTROPHYSICS J2 - ASTRON ASTROPHYS VL - 683 PY - 2024 PG - 12 SN - 0004-6361 DO - 10.1051/0004-6361/202347467 UR - https://m2.mtmt.hu/api/publication/34499100 ID - 34499100 N1 - Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, HUN-REN, Budapest, Hungary HUN-REN, Institute for Nuclear Research, Debrecen, Hungary Konkoly Thege Astronomical Institute, Research Centre for Astronomy and Earth Sciences, HUN-REN, Budapest, Hungary Csfk, Mta Centre of Excellence Budapest, Konkoly Thege Miklós út 15-17., Budapest, 1121, Hungary Eotvos Lorand University of Sciences (ELTE), Budapest, Hungary Geographical Institute, Research Centre for Astronomy and Earth Sciences, HUN-REN, Budapest, Hungary Department of Systems Innovation, School of Engineering, The University of Tokyo, Tokyo, Japan Atomki, Institute of Nuclear Research, Debrecen, 4026, Hungary Export Date: 25 March 2024 CODEN: AAEJA Correspondence Address: Pál, B.D.; Konkoly Thege Astronomical Institute, Hungary; email: pal.bernadett@csfk.org Correspondence Address: Kereszturi, A.; Konkoly Thege Astronomical Institute, Hungary; email: kereszturi.akos@csfk.org AB - Identifying minerals on asteroid surfaces is difficult as space weathering modifies the minerals' infrared spectra. This should be better understood for proper interpretation. We simulated the space weathering effects on a meteorite and recorded the alterations of the crystalline structure, such as the change in peak positions and full width at half maximum values. We used proton irradiation to simulate the effects of solar wind on a sample of NWA 10580 CO3 chondrite meteorites. After irradiation in three gradually increased steps with 1 keV ion energy, we used infrared microscopic reflectance and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) to identify and understand the consequences of irradiation. We find negative peak shifts after the first and second irradiations at pyroxene and feldspar minerals, similarly to the literature, and this shift was attributed to Mg loss. However, after the third irradiation a positive change in values in wavenumber emerged for silicates, which could come from the distortion of SiO tetrahedra, resembling shock deformation. The full width at half maximum values of major bands show a positive (increasing) trend after irradiations in the case of feldspars, using IR reflection measurements. Comparing DRIFTS and reflection infrared data, the peak positions of major mineral bands were at similar wavenumbers, but differences can be observed in minor bands . We measured the spectral changes of meteorite minerals after high doses of proton irradiation for several minerals. We show the first of these measurements for feldspars; previous works only presented pyroxene, olivine, and phyllosilicates. LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos TI - A Comet Interceptor küldetés JF - FIZIKAI SZEMLE J2 - FIZIKAI SZEMLE VL - 73 PY - 2023 IS - 7-8 SP - 245 EP - 248 PG - 4 SN - 0015-3257 UR - https://m2.mtmt.hu/api/publication/34485871 ID - 34485871 LA - Hungarian DB - MTMT ER - TY - CONF AU - Tomka, Richárd Krisztián AU - Kereszturi, Ákos ED - Young, K TI - Ejecta thickness prediction map for the Connecting Ridge Artemis landing site T2 - Lunar Surface Science Workshop PY - 2023 UR - https://m2.mtmt.hu/api/publication/34450682 ID - 34450682 LA - English DB - MTMT ER - TY - JOUR AU - Bradák, Balázs AU - Kereszturi, Ákos AU - Gomez, Christopher TI - Tectonic analysis of a newly identified putative cryovolcanic field on Europa JF - ADVANCES IN SPACE RESEARCH J2 - ADV SPACE RES VL - 72 PY - 2023 IS - 9 SP - 4064 EP - 4073 PG - 10 SN - 0273-1177 DO - 10.1016/j.asr.2023.07.062 UR - https://m2.mtmt.hu/api/publication/34450672 ID - 34450672 LA - English DB - MTMT ER - TY - JOUR AU - Bradák, Balázs AU - Kimura, Jun AU - Gomez, Christopher AU - Kereszturi, Ákos TI - Separation of quasi-continuous and periodic components of lineament formation at the Belus – Phoenix - Rhadamanthys Linea “triangle” on Europa JF - ICARUS J2 - ICARUS VL - 391 PY - 2023 SN - 0019-1035 DO - 10.1016/j.icarus.2022.115367 UR - https://m2.mtmt.hu/api/publication/34450670 ID - 34450670 LA - English DB - MTMT ER - TY - JOUR AU - Leone, Giovanni AU - Ahrens, Caitlin AU - Korteniemi, Jarmo AU - Gasparri, Daniele AU - Kereszturi, Ákos AU - Martynov, Alexey AU - Schmidt, Gene Walter AU - Calabrese, Giuseppe AU - Joutsenvaara, Jari TI - Sverdrup-Henson crater: A candidate location for the first lunar South Pole settlement JF - ISCIENCE J2 - ISCIENCE VL - 26 PY - 2023 IS - 10 SN - 2589-0042 DO - 10.1016/j.isci.2023.107853 UR - https://m2.mtmt.hu/api/publication/34450666 ID - 34450666 LA - English DB - MTMT ER - TY - JOUR AU - Kisvárdai, Imre AU - Pál, Bernadett AU - Kereszturi, Ákos TI - Investigating the porosity of Enceladus JF - MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY J2 - MON NOT R ASTRON SOC VL - 525 PY - 2023 IS - 1 SP - 1246 EP - 1253 PG - 8 SN - 0035-8711 DO - 10.1093/mnras/stad2333 UR - https://m2.mtmt.hu/api/publication/34143227 ID - 34143227 N1 - Export Date: 19 March 2024 CODEN: MNRAA LA - English DB - MTMT ER - TY - JOUR AU - Gyollai, Ildikó AU - Chatzitheodoridis, E AU - Kereszturi, Ákos AU - Szabó, Máté Zoltán TI - Multiple generation magmatic and hydrothermal processes in a Martian subvolcanic environment based on the analysis of Yamato‐000593 nakhlite meteorite JF - METEORITICS & PLANETARY SCIENCE J2 - METEORIT PLANET SCI VL - 58 PY - 2023 IS - 2 SP - 218 EP - 240 PG - 23 SN - 1086-9379 DO - 10.1111/maps.13950 UR - https://m2.mtmt.hu/api/publication/33632051 ID - 33632051 N1 - Funding Agency and Grant Number: NKFIH [K_138594, GINOP-2.3.2-15-2016-00003]; Hungarian State Eotvos Scholarship of the Tempus Public Foundation (Hungary) [MAE_ O2016_1]; [COST-TD1308]; [STSM-010215053644-53644]; [COOP-NN-116927] Funding text: The authors are grateful to the National Technical University of Athens. This work was also supported by the K_138594 fund of NKFIH. We would also like to thank Dr Ian Lyon, from the University of Manchester, Department of Earth and Environmental Sciences, for providing meteorite samples from their collection. The first part of this work was also supported by COST-TD1308, and related STSM-010215053644-53644 grant and COOP-NN-116927 projects. The measurements of this project have been supported by the GINOP-2.3.2-15-2016-00003 grant of the NKFIH. The presentation of this work on EANA (European Astrobiology Network Association) Meeting 2016 is supported by Hungarian State E_otv_os Scholarship (MAE_ O2016_1) of the Tempus Public Foundation (Hungary). LA - English DB - MTMT ER - TY - JOUR AU - Gyollai, Ildikó AU - Kereszturi, Ákos AU - Chatzitheodoridis, E AU - Kereszty, Zs AU - Szabó, Máté Zoltán AU - Király, Csilla AU - Szalai, Zoltán TI - Formation and shock impact history of the Csatalja ordinary chondrite JF - METEORITICS & PLANETARY SCIENCE J2 - METEORIT PLANET SCI VL - 58 PY - 2023 IS - 1 SP - 2 EP - 24 PG - 23 SN - 1086-9379 DO - 10.1111/maps.13931 UR - https://m2.mtmt.hu/api/publication/33525794 ID - 33525794 N1 - Export Date: 26 December 2022 CODEN: MPSCF LA - English DB - MTMT ER -