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001-es BibID:	BIBFORM120160
Első szerző:	Angyal Anikó (környezetkutató fizikus geográfus)
Cím:	Nuclear archaeometry: comparison of PIXE/PIGE and XRF techniques on ceramics / Anikó Angyal, Zsófia Kertész, Stella Doncheva, Péter Szőcs, Boglárka Döncző, Enikő Furu, Enikő Papp, Máté Szarka, Zita Szikszai
Dátum:	2023
Megjegyzések:	26th International Conference on Ion Beam Analysis, 18th International Conference on Particle Induced X-ray Emission, IBA&PIXE 2023 2023. október 7-13. Toyama, Japán
Tárgyszavak:	Természettudományok Fizikai tudományok nem besorolt egyéb
További szerzők:	Kertész Zsófia (1971-) (fizikus) Doncheva, Stella Szőcs Péter Döncző Boglárka (1987-) (biológiatanár-földrajztanár) Furu Enikő (1985-) (vegyész) Papp Enikő (1991-) (környezetkutató) Szarka Máté (1990-) Szikszai Zita (1969-) (fizikus)
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001-es BibID:	BIBFORM115132
035-os BibID:	(cikkazonosító)140 (Scopus)85139241626 (WoS)000850809500001
Első szerző:	Csepregi Ákos (fizikus)
Cím:	Possible modifications of parchment during ion beam analysis / Csepregi, Ákos; Szikszai, Zita; Targowski, Piotr; Sylwestrzak, Marcin; Müller, Katharina; Huszánk, Róbert; Angyal, Anikó; Döncző, Boglárka; Kertész, Zsófia; Szarka, Máté; Reiche, Ina
Dátum:	2022
ISSN:	2050-7445
Megjegyzések:	Ion beam analysis (IBA) is an established method to determine the concentration and the distribution of elements in art and archaeological objects. However, especially for organic specimens, caution must be taken to avoid harmful effects. In this work, the possible modification of recent calf parchment samples by proton beam irradiation was investigated applying fluences (given as deposited charge per unit area) both within and beyond the usual analytical practice. Attenuated Total Reflection Fourier Transform Infra-red Spectroscopy (FTIR-ATR) and Optical Coherence Tomography (OCT) were employed to assess changes, inspected from the surface of the samples. Although both techniques are apt to detect alterations of parchment in general, in the case of particles, which deposit the majority of their energy below the surface these techniques could not detect changes at low fluences. However, a simple "bath test" (short immersion in liquid) proved that disintegration within the material had already happened. After the "bath test", OCT and digital 3D microscopy were used to check the discontinuities in the material, especially for low fluences when the visual inspection might have missed them. Unfortunately, simply monitoring organic objects such as parchment during or after ion beam irradiation, non-destructively, is not sufficient to claim absolute harmlessness, as some studies in the past did. In line with our former findings using electron microscopy on cross sections, we found that 2.3 MeV protons with a deposited charge of 0.5 mu C/cm(2) caused no changes affecting the integrity of parchment but 2 mu C/cm(2) apparently did under the applied experimental conditions. To ensure the required analytical signal at a relatively low deposited charge, the detection system must be optimized for efficiency. Nevertheless, since the variability of the historic materials and the measurement set-ups are considerable, these values cannot be taken as absolutes, but only as guides, both for further IBA studies and for studies conducted in the past.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Heritage Science. - 10 : 1 (2022), p. 1-13. -
További szerzők:	Szikszai Zita (1969-) (fizikus) Targowski, Piotr Sylwestrzak, Marcin Müller, Katharina Huszánk Róbert (vegyész kutató) Angyal Anikó (1984-) (környezetkutató fizikus geográfus) Döncző Boglárka (1987-) (biológiatanár-földrajztanár) Kertész Zsófia (1971-) (fizikus) Szarka Máté (1990-) Reiche, Ina
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001-es BibID:	BIBFORM106604
035-os BibID:	(WoS)000734011500001 (Scopus)85121652725
Első szerző:	Molnár Kata
Cím:	The westernmost Late Miocene-Pliocene volcanic activity in the Vardar zone (North Macedonia) / Kata Molnár, Pierre Lahitte, Stéphane Dibacto, Zsolt Benkó, Samuele Agostini, Boglárka Döncző, Artur Ionescu, Ivica Milevski, Zita Szikszai, Zsófa Kertész, Marjan Temovski
Dátum:	2021
ISSN:	1437-3254
Megjegyzések:	Late Miocene to Pleistocene volcanism within the Vardar zone (North Macedonia) covers a large area, has a wide range in composition, and is largely connected to the tectonic evolution of the South Balkan extensional system, the northern part of the Aegean extensional regime. The onset of the scattered potassic to ultrapotassic volcanism south from the ScutariPeć transverse zone occurred at ca. 8.0 Ma based on this study. Here, we focused on three volcanic centers located on deep structures or thrust faults along the western part of the Vardar zone, for which there is none to very little geochronological and geochemical data available. Pakoševo and Debrište localities are represented as small remnants of lava fows cropping out at the southern edge of Skopje basin and at the western edge of Tikveš basin, respectively. Šumovit Greben center is considered as part of the Kožuf-Voras volcanic system, and it is located on its westernmost side, at the southern edge of Mariovo basin, which is largely composed of volcaniclastic sediments. We present new eruption ages applying the unspiked Cassignol-Gillot K-Ar technique on groundmass, as well as petrological and geochemical data, supplemented with Sr and Nd isotopes to complement and better understand the Neogene-Pleistocene volcanism in the region. Eruption ages on these rocks interlayered between sedimentary formations allow to better constrain the evolution of those sedimentary basins. Rocks from the three volcanic centers belong to the high-K calc-alkaline-shoshonitic series based on their elevated K content. The oldest center amongst these three localities, as well as other Late Miocene centers within the region, is the trachyandesitic Debrište, which formed at ca. 8.0 Ma, and exhibits the highest Nd and lowest Sr isotopic ratios (0.512441-0.512535 and 0.706759-0.706753, respectively). The basaltic trachyandesite Pakoševo center formed at ca. 3.8 Ma and its Nd and Sr isotopic ratios (0.512260 and 0.709593, respectively) bear the strongest signature of crustal contamination. The rhyolitic Šumovit Greben center is a composite volcanic structure formed at ca. 3.0-2.7 Ma. Its youngest eruption unit has a slightly higher Nd and lower Sr isotopic ratios (0.512382 and 0.709208, respectively) representing a magma with a lesser extent of crustal assimilation than the other samples from this center. The overall trend through time in the Sr and Nd isotopic ratios of the Late Miocene to Pleistocene mafc volcanic centers in the region implies an increasing rate of metasomatism of the lithospheric mantle.
Tárgyszavak:	Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Unspiked Cassignol-Gillot K-Ar dating Late Miocene-Pleistocene Volcanism Vardar zone Sr and Nd isotopes
Megjelenés:	International Journal Of Earth Sciences. - 111 : 3 (2021), p. 749-766. -
További szerzők:	Lahitte, Pierre Dibacto, Stéphane Benkó Zsolt (1980-) (geológus) Agostini, Samuele Döncző Boglárka (1987-) (biológiatanár-földrajztanár) Ionescu, Artur Milevski, Ivica Szikszai Zita (1969-) (fizikus) Kertész Zsófia (1971-) (fizikus) Temovski, Marjan
Pályázati támogatás:	GINOP-2.3.2-15-2016-00009 GINOP TÉT-FR-2018-00018 Egyéb
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001-es BibID:	BIBFORM120018
Első szerző:	Tobias Bendeguz
Cím:	Micro-PIXE studies on belt sets of Bieringen type / Tobias, Bendeguz ; Döncző, Boglárka ; Csepregi, Ákos ; Kertész, Zsófia ; Angyal, Anikó ; Papp, Enikő ; Török, Zsófia ; Szikszai, Zita
Dátum:	2019
Megjegyzések:	TECHNART 2019, Bruges, Belgium, 2019. 05. 07-2019. 05.10, poszter
Tárgyszavak:	Természettudományok Fizikai tudományok nem besorolt egyéb
További szerzők:	Döncző Boglárka (1987-) (biológiatanár-földrajztanár) Csepregi Ákos (1991-) (fizikus) Kertész Zsófia (1971-) (fizikus) Angyal Anikó (1984-) (környezetkutató fizikus geográfus) Papp Enikő (1991-) (környezetkutató) Török Zsófia (1985-) (környezetkutató) Szikszai Zita (1969-) (fizikus)
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