Electron induced reactivity of major hydride cations in interstellar space  Page description

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Details of project

  
Identifier
132989
Type FK
Principal investigator Mezei, János Zsolt
Title in Hungarian A csillagközi tér jelentős hidrid kationjainak elektron-indukált reaktivitása
Title in English Electron induced reactivity of major hydride cations in interstellar space
Keywords in Hungarian molekula kationok, elektron gerjesztés, disszociatív rekombináció, ro-vibrációs gerjesztés, sok-csatornás elmélet, csillagközi tée
Keywords in English molecular cations, electron driven, dissociative recombination, ro-vibrational excitation, multi-channel theory, interstellar medium
Discipline
Physics (Council of Physical Sciences)80 %
Ortelius classification: Molecular physics
Astrophysics (Council of Physical Sciences)20 %
Panel Physics 1
Department or equivalent Quantum physics research group (HUN-REN Institute for Nuclear Research)
Participants Demes, Sándor
Orbán, Andrea
Starting date 2019-12-01
Closing date 2024-11-30
Funding (in million HUF) 28.171
FTE (full time equivalent) 5.50
state running project





 

Final report

  
Results in Hungarian
A kisenergiájú elektronok molekula rendszerekkel való reaktív folyamatai az alapkutatási kérdéskörök mellett számos alkalmazási terület számára fontosak, mint például a csillagközi tér és az univerzum asztrokémiája, technológiai és fúziós plazmák, bolygók és exobolygók légkör- és környezetfizikája, sugárterápiás eljárások stb. A pályázatban elért legfontosabb eredmények: 1) A hidrogén, szén, kén, nitrogén csillagközi térre jellemző asztrokémiáját kibővítettük elektronok által keltett rekombinációs folyamatok hatáskeresztmetszeteinek és reakció sebességeinek meghatározásával azon molekularendszerek esetén, amelyeket a közelmúltban észleltek. 2) Kimutattuk, hogy a csillagközi térben a 14-es és 15-ös nitrogén izotóparánya nem függ a N2H+ rekombinációs folyamataitól. 3) Elektron – molekula-kation ütközésekben először határoztunk meg elágazási arányokat a rekombinációs folyamatokra. 4) Az ITER-szerű fúziós reaktorokban keletkező berillium monohidridek elektron keltette állapot szelektív rekombinációs és gerjesztési hatáskeresztmetszetét határoztuk meg 12 eV ütközési energiaértékig. 5) Eljárást dolgoztunk ki spin-pálya kölcsönhatás dinamikai számításokban történő figyelembevételére.
Results in English
The reactive processes of low-energy electrons with molecular systems besides their relevant aspects in fundamental research, have key importance for many application areas, such as the astrochemistry of interstellar medium and early Universe, technological and fusion plasmas, atmospheric and environmental physics of planets and exoplanets, radiotherapy, etc. The most important results achieved in the project are the followings: 1) We have expanded the astrochemistry of hydrogen, carbon, sulfur, and nitrogen relevant for the interstellar medium by determining the cross sections and rate coefficients of electron-induced recombination processes of recently observed molecular systems. 2) We have demonstrated that the isotope ratio of nitrogen-14 and -15 in interstellar medium does not depend on the recombination processes of N2H+. 3) For the first time, we have determined branching ratios for recombination processes in electron-molecular cation collisions. 4) We have determined the state-selective recombination and excitation cross sections of the beryllium monohydrides formed in ITER-like fusion reactors up to a collision energy of 12 eV. 5) We have developed a procedure for considering the spin-orbit interaction in the dynamical calculations.
Full text https://www.otka-palyazat.hu/download.php?type=zarobeszamolo&projektid=132989
Decision
Yes





 

List of publications

  
R. Hassaine, D. Talbi, R. P. Brady, J. Zs. Mezei, J. Tennyson, and I. F. Schneider: Theoretical study of the excited states of NeH and of their non-adiabiatic couplings: a preliminary for the modeling of the dissociative recombination of NeH+, ubmitted to J. Chem. Phys. (2025). arXiv:2501.18431, 2025
M. A. Ayouz, A. Faure, I. F. Schneider, J. Zs. Mezei and V. Kokoouline: Theoretical Study Of The Vibrational (De-)Excitation Of The HDO Molecule By Electron Impact,, submitted to Atoms (2025)., 2025
X. Xing, P. Weckesser, F. Thielemann, T. Jo ́na ́s, R. Vexiau, N. Bouloufa-Maafa, E. Luc-Koenig, K. W. Madison, A. Orba ́n, T. Xie, T. Schaetz, and O. Dulieu: Competing excitation quenching and charge exchange in ultracold Li-Ba+ collisions, J. Phys. B: At. Mol. Opt. Phys. 57, 245201 (2024), 2024
E. Djuissi, J. Boffelli, R. Hassaine, N. Pop, V. Laporta, K. Chakrabarti, M. Ayouz, A. Bultel, J. Zs. Mezei, and I. F. Schneider: Reactive collisions between electrons and BeH+ above dissociation threshold,, Phys. Chem. Chem. Phys. 26, 18311 (2024), 2024
J. Zs. Mezei, A. Orba ́n, S. Demes, M. Ayouz, A. Faure, P. Hily-Blant, V. Kokoouline, and I. F. Schneider: Dissociative recombination of N2H+: Isotopic effects, submitted to A&A (2025). arXiv:2501.18434, 2025
R. Ghosh, B. S. Choudhury, J. Zs. Mezei, I. F. Schneider, N. Pop, and K. Chakrabarti: Rydberg states and new resonant states of the imidogen molecule NH: pathways for nitrogen release, accepted for publication in Phys. Chem. Chem. Phys. (2025). arXiv:2412.14830, 2025
Sandor Demes, Vladimir Kelemen and Eugene Remeta: Elastic electron scattering by halocarbon radicals in the independent atom model approach, Eur. Phys. J. D 74, 57 (2020), 2020
EMERANCE DJUISSI , RAZVAN BOGDAN , ABDILLAH ABDOULANZIZ , NICOLINA POP , FELIX IACOB , CLEMENT ARGENTIN , MICHEL DOUGLAS EPEE EPEE , OUSMANOU MOTAPON , VINCENZO LAPORTA , JANOS ZSOLT MEZEI , IOAN F. SCHNEIDER: ELECTRON DRIVEN REACTIVE PROCESSES INVOLVING H+2 AND HD+ MOLECULAR CATIONS IN THE EARLY UNIVERSE, Romanian Astron. J. 30, 101 (2020), 2020
J Zs Mezei, A Orban, K Chakrabarti, Y Moulane, M D Epee Epee, O Motapon, D Talbi and I F Schneider: Electronic reactive collisions in cold ionised media: from mechanisms to new state-to-state cross sections and rate coefficients, Journal of Physics: Conference Series 1412, 172003 (2020), 2020
A Abdoulanziz, E Djuissi, C Argentin, Y Moulane, A Bultel, J Zs Mezei, J Tennyson, K Chakrabarti, V Laporta and I Schneider: Electron dissociative attachement to ArH+, HD+, N2+ and CO2, Journal of Physics: Conference Series 1412, 172005 (2020), 2020
N Pop, F Iacob, J Zs Mezei, S Niyonzima, O Motapon and I F Schneider: Dissociative recombination and vibrational excitation of molecular cations with electrons: application to H2+, BeH+ and their isotopomers, Journal of Physics: Conference Series 1412, 172004 (2020), 2020
J. Zs. Mezei , E. Djuissi , A. Abdoulanziz , F. Iacob , N. Pop , D. Talbi , V. Laporta , M. Ayouz , V. Kokoouline and I. F. Schneider: Electron induced reactivity of molecular cations: from mechanisms to new state-to-state cross sections and rate coefficients, PCMI2020 Le Havre (https://pcmi2020lehavre.sciencesconf.org), 2020
J. Zs. Mezei, A. Abdoulanziz, E. Djuissi, F. Iacob, N. Pop, K. Chakrabarti, V. Laporta, M. Ayouz, V. Kokoouline, I. F. Schneider: Electronic reactive collisions in cold ionised media: from mechanisms to new state-to-state cross sections and rate coefficients, ESCAMPIG XXV, Paris, France, July 15-18, 2020 (https://escampig2020.sciencesconf.org), 2020
J. Zs. Mezei, E. Djuissi, A. Abdoulanziz, F. Iacob, N. Pop, D. Talbi, V. Laporta, M. Ayouz , V. Kokoouline and I. F. Schneider: REACTIVE ELECTRON/MOLECULE COLLISIONS: FROM MECHANISMS TO NEW STATE-TO-STATE CROSS SECTIONS AND RATE COEFFICIENTS, 1stmeeting of the COST Action CA18212 "Molecular Dynamics in the GAS phase", GANIL, Caen (France), 18-21 February 2020. (https://md-gas.sciencesconf.org), 2020
N. Pop, F. Iacob, S. Niyonzima, A. Abdoulanziz, V. Laporta, D. Reiter, I.F. Schneider, J.Zs. Mezei: Reactive collisions between electrons and BeT+: Complete set of thermal rate coefficients up to 5000 K, Atomic Data and Nuclear Data Tables, 2021
Frédéric GAUCHET: Etude des collisions électron/cation moléculaire ( H+2 , CH+) dans les plasmas hors équilibre d'intérêt énergétique, Master 2 ENERGETIQUE DES FLUIDES COMPLEXES, Univ. Le Havre Normandy, 2021
J. Zs. Mezei, E. Djuissi, A. Abdoulanziz, C. Argentin, F. Iacob, N. Pop, A. Orban, K. Chakrabarti, D. Talbi and I. F. Schneider: ELECTRON INDUCED REACTIVITY OF MOLECULAR CATIONS: FROM MECHANISMS TO NEW STATE-TO-STATE CROSS SECTIONS AND RATE COEFFICIENTS, work meeting of the MD-GAS COST Action (CA18212): Processes in Atmospheric and Astrochemical Environments (patas21): https://brightelm.eventsair.com/QuickEventWebsitePort, 2021
Janos Zsolt Mezei, Jeoffrey Boffelli, Frederic Gauchet, Andrea Orban, Kalyan Chakrabarti, Dahbia Talbi and Ioan F Schneider: New insights in the low energy electron-driven reactivity of molecular cations, 32nd International Conference on Photonic, Electronic and Atomic Collisions (vicpeac2021), July 20 - 23, 2021: https://www.icpeac2021.ca, 2021
J. Boffelli, J. Zs. Mezei, I. F. Schneider: Population of ground and lowest excited state of Sulfur via SH+ dissociative recombination, workshop on The Ionization Fraction of the Interstellar Medium (ifism2021), 18-19 nov. 2021 Le Havre (France): https://ifism2021.sciencesconf.org, 2021
J. Zs. Mezei, E. Djuissi, A. Abdoulanziz, J. Boffelli, G. Farkas, F. Iacob, N. Pop, D. Talbi, M. Ayouz, V. Kokoouline and I. F. Schneider: Hydrides in the ISM. Electron induced reactivity of molecular cations, workshop on The Ionization Fraction of the Interstellar Medium (ifism2021), 18-19 nov. 2021 Le Havre (France): https://ifism2021.sciencesconf.org, 2021
J. Zs. Mezei, J. Boffelli, E. Djuissi, A. Abdoulanziz, N. Pop, F. Iacob, S. Niyonzima, M. D. Epée Epée, O. Motapon, V. Laporta, K. Chakrabarti, D. Reiter, J. Tennyson and I. F. Schneider: Recent results on the reactive collisions of electrons with H2+, BeH+, ArH+ and some of their isotopologues, 2nd Meeting of the Global Network for the Atomic and Molecular Physics of Plasmas: https://amdis.iaea.org/meetings/gnampp-2/, 2021
M. D. Epe ́e Epe ́e, O. Motapon, N. Pop, F. Iacob, E. Roueff, I. F. Schneider, and J. Zs. Mezei: Dissociative recombination and rotational transitions of D+2 in collisions with slow electrons, MNRAS 512, 424–429 (2022), 2022
F Iacob, T Meltzer, J Zs Mezei, I F Schneider, and J Tennyson: Study of bound and resonant states of NS molecule in the R-matrix approach, J. Phys. B: At. Mol. Opt. Phys. 55 (2022) 235202 (9pp), 2022
K Chakrabarti, J Zs Mezei, I F Schneider, and J Tennyson: Electron collision studies on the CH+2 molecular ion, J. Phys. B: At. Mol. Opt. Phys. 55 (2022) 095201 (7pp), 2022
J. Boffelli, F. Gauchet, D. O. Kashinski , D. Talbi, A. P. Hickman, K. Chakrabarti, E. Bron, A. Orba ́n, J. Zs. Mezei, and I. F. Schneider: Population of ground and lowest excited states of Sulfur via the dissociative recombination of SH+ in the diffuse interstellar medium, arXiv, submitted to MNRAS, 2022
T. Xie, A. Orbán, X. Xing, E. Luc-Koenig, R. Vexiau, O. Dulieu, N. Bouloufa-Maafa: Engineering long-range interactions between ultracold atoms with light, J. Phys. B: At. Mol. Opt. Phys. 55 034001 (2022), 2022., 2022
J. Boffelli, F. Gauchet, D. O. Kashinski, D. Talbi, A. P. Hickman, K. Chakrabarti, E. Bron, A. Orban, J. Zs. Mezei and I. F. Schneider: Population of ground and lowest excited states of sulfur via the dissociative recombination of SH+ in the diffuse interstellar medium, MNRAS 522, 2259, 2023
J. Zs. Mezei , M. A. Ayouz, A. Orban, A. Abdoulanziz, D. Talbi, D. O. Kashinski, E. Bron, V. Kokoouline, and I. F. Schneider: Dissociative recombination of N2H+: a revisited study, Eur. Phys. J. Spec. Top. 232, 1967, 2023
E. Djuissi, J. Boffelli, R. Hassaine, N. Pop, V. Laporta, K. Chakrabarti, M. A. Ayouz, J. Zs Mezei and I. F. Schneider: Reactive collisions between electrons and BeH+ above dissociation threshold, arXiv:2312.09923, 2023
G. Fazekas: Elme ́leti hibahata ́rok becsle ́se az SH+ molekulaion disszociat ́ıv rekombina ́cio ́ja ́hoz, Debreceni Egyetem, TDK, 2021
R. Hassaine,F. Gauchet, F. Iacob, J. Zs. Mezei, E. Roueff, J. Tennyson, and I. F. Schneider: Dissociative recombination of NS+ in collision with slow electrons, J. Phys. B: At. Mol. Opt. Phys. 57, 165201 (2024), 2024
I. A. Balogh: Ke ́ntartalmu ́-molekula ́k elektron veze ́relt asztroke ́mia ́ja, Debreceni egyetem, Fizika BSc diplomamunka, 2024




 

Events of the project

  
2023-04-27 08:50:25
Kutatóhely váltás
A kutatás helye megváltozott. Korábbi kutatóhely: Kísérleti molekulafizikai kutatócsoport (Atommagkutató Intézet), Új kutatóhely: Kvantumelmélet kutatócsoport (Atommagkutató Intézet).



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