Publications de Helgi HRODMARSSON au LISA

M. Drissi, G. A. Garcia, B. Gans, S. Boyé-Péronne, Helgi Hrodmarsson, L. Nahon, J.-C. Loison, Photoelectron spectroscopy of HCCS radical, Journal of Chemical Physics, 164, https://doi.org/10.1063/5.0314226, 2026

O. Sipilä, P. Caselli, M. Padovani, D. Galli, T. Grassi, Helgi Hrodmarsson, S. S. Jensen, and E. Roueff, New Estimate for the Cosmic Ray-Induced H2 Photodissociation Rate in the Interstellar Medium, ACS Earth & Space Chemistry, 10, 490-497, https://doi.org/10.1021/acsearthspacechem.5c00289, 2026

L. Ganner, G. Schöpfer, A. Ebenbichler, S. Bergmeister, M. Ončák, Helgi Hrodmarsson, E. Gruber, Electronic Spectroscopy of C60+ and Its Analogs C60H2O+, C60H+ , C60D+ , and C60Mg+, The Astrophysical Journal, 993, 47, https://doi.org/10.3847/1538-4357/adfd50, 2025

L. Ganner, G. A. Garcia, Martin Schwell, M. Kappe, L. Nahon, E. Gruber, Helgi Hrodmarsson, Experimental VUV Photoionization of C70 and vibrationally resolved spectra of the excited electronic states of the C70+ cation Analogs, ACS Earth & Space Chemistry, 9, 2694-2704, https://doi.org/10.1021/acsearthspacechem.5c00217, 2025

M. M. Patch, R. McClish, S. Panchagnula, D. B. Rap, S. Banhatti, Helgi Hrodmarsson, S. Brunken, H. Linnartz, A. G. G. M. Tielens, J. Bouwman, Radical isomerization upon dissociative electron ionization of anthracene and phenanthrene, Journal of the American Chemical Society, 147, 34508-3451, https://doi.org/10.1021/jacs.5c08619, 2025

Helgi Hrodmarsson, L. Verstraete, E. Dartois, J. Fréreux, O. Lacinbala, L. Nahon, G.A. Garcia, T. Pino, P. Bréchignac, Photoionization of small neutral polycyclic aromatic hydrocarbons. Testing photoelectric models of interstellar dust, Astronomy & Astrophysics, 698, A202, https://doi.org/10.1051/0004-6361/202554245, 2025

Helgi Hrodmarsson, I. Aleman, A. Candian, S. Wiersma, J. Palotás, D. Dubois, A. Sidhu, D. Loru, P. Sundarajan, E. Sciamma-O’Brien, A.G.G.M. Tielens., The AstroPAH 10 Years of Science Review, Space Science Reviews, 221, 42, https://doi.org/10.1007/s11214-025-01161-x, 2025

A. Ebenbichler, M. Oncak, N. Przybilla, Helgi Hrodmarsson, J. V. Smoker, R. Lallement, A. Farhang, C. Bhatt, J. Cami, M. Cordiner, P. Ehrenfreund, N. L. J. Cox, J. Th. van Loon, B. Foing, The EDIBLES survey X. The 6196 Å diffuse interstellar band: Identification of side DIBs as indication for a small carrier molecule, Astronomy & Astrophysics, 695, A212, https://doi.org/10.1051/0004-6361/202453259, 2025

K. L. Chubb, S. Robert, C. Sousa-Silva, S. N. Yurchenko, N. F. Allard, V. Boudon, J. Buldyreva, B. Bultel, A. Coustenis, A. Foltynowicz, I. E. Gordon, R. J. Hargreaves, C. Helling, C. Hill, Helgi Hrodmarsson, T. Karman, H. Lecoq-Molinos, A. Migliorini, M. Rey, C. Richard, I. Sadiek, F. Schmidt, A. Sokolov, S. Stefani, J. Tennyson,, Olivia Venot, et al, Data availability and requirements relevant for the Ariel space mission and other exoplanet atmosphere applications, RAS Techniques and Instruments, 3, 636-690, https://doi.org/10.1093/rasti/rzae039, 2024

Helgi Hrodmarsson, G. A. Garcia, L. Nahon, L. Bourehil, B. Gans, S. Boyé-Péronne, J.-C. Guillemin, J.-C. Loison, The Isomer Distribution of C6H6 Products from the Propargyl Radical Gas-Phase Recombination Investigated by Threshold-Photoelectron Spectroscopy, Communications Chemistry, 7, 156, https://doi.org/10.1038/s42004-024-01239-7, 2024

S. R. Domingos, D. S. Tikhonov, A. L. Steber, P. Eschenbach, S. Gruet, Helgi Hrodmarsson, K. Martin, G. A. Garcia, L. Nahon, J. Neugebeauer, N. Avarvari, M. Schnell, Evolution of the ionization energy with the stepwise growth of chiral clusters of [4]helicene, Nature Communications, 15, 4928, https://doi.org/10.1038/s41467-024-48778-0, 2024

S. Panchagnula, J. Kamer, A. Candian, Helgi Hrodmarsson, H. Linnartz, J. Bouwman, A. G. G. M. Tielens, Laser-Induced Fragmentation of Coronene Cations, Physical Chemistry Chemical Physics, 26, 18557, https://doi.org/10.1039/d4cp01301h, 2024

Helgi Hrodmarsson, M. Rapacioli, F. Spiegelman, G. A. Garcia, J. Bouwman, L. Nahon, H. Linnartz, Probing the electronic structure and ground state symmetry of gas phase C60+ via VUV photoionization and comparison with theory, Journal of Chemical Physics, 160, 164314, https://doi.org/10.1063/5.0203004, 2024

Helgi Hrodmarsson, Martin Schwell, Nicolas Fray, Jean-Claude Guillemin, Majdi Hochlaf, and Emilie-Laure Zins, Vacuum Ultraviolet Single Photon Ionization and Decomposition of 2-Aminopropionitrile in Astrophysical Objects, The astrophysical Journal, 964, 26, https://doi.org/10.3847/1538-4357/ad1522, 2024

Madhusree Roy Chowdhury, Gustavo A. Garcia, Helgi Hrodmarsson, Jean-Christophe Loison, and Laurent Nahon, Photoionization of Nitrile-substituted Naphthalene and Benzene: Cation Spectroscopy, Photostability, and Implications for Photoelectric Gas Heating, The Astrophysical Journal, 963, 29, https://doi.org/10.3847/1538-4357/ad16d9, 2024

Helgi Hrodmarsson, E. F. van Dishoeck, Photodissociation and photoionization of molecules of astronomical interest: Updates to the Leiden photodissociation and photoionization cross section database, Astronomy & Astrophysics, 675, A25, https://doi.org/10.1051/0004-6361/202346645, 2023

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