Cold Ion Chemistry - Experiments within a Rydberg Orbit | CICERO | Project | Results | H2020 | CORDIS

Pubblicazioni

Characterization of the 3dδ Rydberg state of MgAr+ using a quantum-control optical scheme

Autori: M. Génévriez, D. Wehrli, T. Berglitsch, F. Merkt
Pubblicato in: Physical Review A, Numero 104, 2021, Pagina/e 042811, ISSN 1094-1622
Editore: American Physical Society
DOI: 10.1103/physreva.104.042811

Characterization of the electronic ground state of Mg2+ by PFI-ZEKE photoelectron spectroscopy

Autori: Génévriez Matthieu, Holdener Maxime, Kreis Carla, Merkt Frédéric
Pubblicato in: Journal of Molecular Spectroscopy, Numero 385(issue), 2022, ISSN 0022-2852
Editore: Academic Press
DOI: 10.1016/j.jms.2022.111591

Multipole-moment effects in ion–molecule reactions at low temperatures: part I – ion-dipole enhancement of the rate coefficients of the He+ + NH3 and He+ + ND3 reactions at collisional energies Ecoll/kB near 0 K

Autori: Valentina Zhelyazkova, Fernanda B. V. Martins, Josef A. Agner, Hansjürg Schmutz, Frédéric Merkt
Pubblicato in: Physical Chemistry Chemical Physics, Numero 23 (38), 2021, Pagina/e 21606-21622, ISSN 1463-9076
Editore: Royal Society of Chemistry
DOI: 10.1039/d1cp03116c

Charge-Transfer-Induced Predissociation in Rydberg States of Molecular Cations: MgAr+

Autori: Dominik Wehrli, Matthieu Génévriez, Stefan Knecht, Markus Reiher, Frédéric Merkt
Pubblicato in: The Journal of Physical Chemistry A, Numero 125 (31), 2021, Pagina/e 6681-6696, ISSN 1089-5639
Editore: American Chemical Society
DOI: 10.1021/acs.jpca.1c03859

Reactions of H2, HD, and D2 with H2+, HD+, and D2+: Product-Channel Branching Ratios and Simple Models

Autori: Frédéric Merkt, Katharina Höveler, Johannes Deiglmayr
Pubblicato in: The Journal of Physical Chemistry Letters, Numero 13, 2022, Pagina/e 864-871, ISSN 1948-7185
Editore: American Chemical Society
DOI: 10.1021/acs.jpclett.1c03374

Precision millimetre-wave spectroscopy and calculation of the Stark manifolds in high Rydberg states of para-H<inf>2</inf>Precision millimetre-wave spectroscopy and calculation of the Stark manifolds in high Rydberg states of para-H<inf>2</inf>

Autori: Hölsch N., Doran I., Beyer M., Merkt F.
Pubblicato in: Journal of Molecular Spectroscopy, 2022, ISSN 0022-2852
Editore: Academic Press

The H2+ + HD reaction at low collision energies: H3+/H2D+ branching ratio and product-kinetic energy distributions

Autori: Katharina Höveler, Johannes Deiglmayr, Josef A. Agner, Hansjürg Schmutz, Frédéric Merkt
Pubblicato in: Physical Chemistry Chemical Physics, Numero 23 (4), 2021, Pagina/e 2676-2685, ISSN 1463-9076
Editore: Royal Society of Chemistry
DOI: 10.1039/d0cp06107g

SI-traceable frequency dissemination at 1572.06 nm in a stabilized fiber network with ring topology

Autori: Dominik Husmann, Laurent-Guy Bernier, Mathieu Bertrand, Davide Calonico, Konstantinos Chaloulos, Gloria Clausen, Cecilia Clivati, Jérôme Faist, Ernst Heiri, Urs Hollenstein, Anatoly Johnson, Fabian Mauchle, Ziv Meir, Frédéric Merkt, Alberto Mura, Giacomo Scalari, Simon Scheidegger, Hansjürg Schmutz, Mudit Sinhal, Stefan Willitsch, Jacques Morel
Pubblicato in: Optics Express, Numero 29 (16), 2021, Pagina/e 24592-24605, ISSN 1094-4087
Editore: Optical Society of America
DOI: 10.1364/oe.427921

Multipole-moment effects in ion–molecule reactions at low temperaturesPart II – charge– quadrupole-interaction-induced suppression of the He+ + N2 reaction at collision energies below kB10 K

Autori: Zhelyazkova Valentina, Martin Fernanda B.V., Žeško Matija, Merkt Frédéric
Pubblicato in: Physical Chemistry Chemical Physics, Numero 24(5), 2022, ISSN 1463-9076
Editore: Royal Society of Chemistry
DOI: 10.1039/d1cp04798a

Manipulating beams of paramagnetic atoms and molecules using inhomogeneous magnetic fields

Autori: Paul Jansen, Frédéric Merkt
Pubblicato in: Progress in Nuclear Magnetic Resonance Spectroscopy, Numero 120-121, 2020, Pagina/e 118-148, ISSN 0079-6565
Editore: Elsevier BV
DOI: 10.1016/j.pnmrs.2020.08.002

Multipole-moment effects in ion-molecule reactions at low temperatures: part III - the He+ + CH4 and He+ + CD4 reactions at low collision energies and the effect of the charge-octupole interaction

Autori: Zhelyazkova Valentina, Martins Fernanda B.V., Merkt Frédéric
Pubblicato in: Physical Chemistry Chemical Physics, Numero 24(26), 2022, ISSN 1463-9076
Editore: Royal Society of Chemistry
DOI: 10.1039/d1cp05861d

Complete characterization of the 3p Rydberg complex of a molecular ion: MgAr + . I. Observation of the Mg(3pσ)Ar + B + state and determination of its structure and dynamics

Autori: Dominik Wehrli, Matthieu Génévriez, Stefan Knecht, Markus Reiher, Frédéric Merkt
Pubblicato in: The Journal of Chemical Physics, Numero 153/7, 2020, Pagina/e 074310, ISSN 0021-9606
Editore: American Institute of Physics
DOI: 10.1063/5.0015603

Communication: Heavy-Rydberg states of HD and the electron affinity of the deuterium atom

Autori: Maximilian Beyer, Frédéric Merkt
Pubblicato in: The Journal of Chemical Physics, Numero 149/3, 2018, Pagina/e 031102, ISSN 0021-9606
Editore: American Institute of Physics
DOI: 10.1063/1.5043186

Metrology of high- n Rydberg states of molecular hydrogen with Δ ν / ν = 2 × 10 −

Autori: Maximilian Beyer, Nicolas Hölsch, Josef A. Agner, Johannes Deiglmayr, Hansjürg Schmutz, Frédéric Merkt
Pubblicato in: Physical Review A, Numero 97/1, 2018, Pagina/e 012501, ISSN 2469-9926
Editore: American Physical Society
DOI: 10.1103/physreva.97.012501

Hyperfine-interaction-induced g/u mixing and its implication on the existence of the first excited vibrational level of the A+ Σu+2 state of H2+ and on the scattering length of the H + H + collision

Autori: Maximilian Beyer, Frédéric Merkt
Pubblicato in: The Journal of Chemical Physics, Numero 149/21, 2018, Pagina/e 214301, ISSN 0021-9606
Editore: American Institute of Physics
DOI: 10.1063/1.5046147

Dissociation Energy of the Hydrogen Molecule at 10 − 9 Accuracy

Autori: C.-F. Cheng, J. Hussels, M. Niu, H. L. Bethlem, K. S. E. Eikema, E. J. Salumbides, W. Ubachs, M. Beyer, N. Hölsch, J. A. Agner, F. Merkt, L.-G. Tao, S.-M. Hu, Ch. Jungen
Pubblicato in: Physical Review Letters, Numero 121/1, 2018, Pagina/e 013001, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/physrevlett.121.013001

Nonadiabatic effects on the positions and lifetimes of the low-lying rovibrational levels of the GK 1 Σ+g and H 1 Σ+g states of H 2

Autori: Nicolas Hölsch, Maximilian Beyer, Frédéric Merkt
Pubblicato in: Physical Chemistry Chemical Physics, Numero 20/42, 2018, Pagina/e 26837-26845, ISSN 1463-9076
Editore: Royal Society of Chemistry
DOI: 10.1039/c8cp05233f

High-resolution photoelectron spectroscopy and calculations of the highest bound levels of ${{\rm{D}}}_{2}^{+}$ below the first dissociation threshold

Autori: Maximilian Beyer, Frédéric Merkt
Pubblicato in: Journal of Physics B: Atomic, Molecular and Optical Physics, Numero 50/15, 2017, Pagina/e 154005, ISSN 0953-4075
Editore: Institute of Physics Publishing
DOI: 10.1088/1361-6455/aa7ac9

Molecular-beam resonance method with Zeeman-decelerated samples: Application to metastable helium molecules

Autori: Luca Semeria, Paul Jansen, Gloria Clausen, Josef A. Agner, Hansjürg Schmutz, Frédéric Merkt
Pubblicato in: Physical Review A, Numero 98/6, 2018, Pagina/e 062518, ISSN 2469-9926
Editore: American Physics Society
DOI: 10.1103/physreva.98.062518

Fundamental vibration frequency and rotational structure of the first excited vibrational level of the molecular helium ion (He2+)

Autori: Paul Jansen, Luca Semeria, Frédéric Merkt
Pubblicato in: The Journal of Chemical Physics, Numero 149/15, 2018, Pagina/e 154302, ISSN 0021-9606
Editore: American Institute of Physics
DOI: 10.1063/1.5051089

PFI-ZEKE photoelectron spectroscopy of positively charged ions: illustration with Mg+

Autori: M. Génévriez, D. Wehrli, J.A. Agner, F. Merkt
Pubblicato in: International Journal of Mass Spectrometry, Numero 435, 2019, Pagina/e 209-216, ISSN 1387-3806
Editore: Elsevier BV
DOI: 10.1016/j.ijms.2018.10.017

Half-Collision Approach to Cold Chemistry: Shape Resonances, Elastic Scattering, and Radiative Association in the H + + H

Autori: Maximilian Beyer, Frédéric Merkt
Pubblicato in: Physical Review X, Numero 8/3, 2018, Pagina/e 031085, ISSN 2160-3308
Editore: American Physical Society
DOI: 10.1103/physrevx.8.031085

Determination of the Spin-Rotation Fine Structure of He 2 +

Autori: Paul Jansen, Luca Semeria, Frédéric Merkt
Pubblicato in: Physical Review Letters, Numero 120/4, 2018, Pagina/e 043001, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/physrevlett.120.043001

Fluorescence-lifetime-limited trapping of Rydberg helium atoms on a chip

Autori: V. Zhelyazkova, M. Žeško*, H. Schmutz, J. A. Agner, F. Merkt
Pubblicato in: Molecular Physics, Numero 117/21, 2019, Pagina/e 2980-2989, ISSN 0026-8976
Editore: Taylor & Francis
DOI: 10.1080/00268976.2019.1600060

Precision measurement of the ionization energy and quantum defects of K 39 i

Autori: Michael Peper, Felix Helmrich, Jonas Butscher, Josef Anton Agner, Hansjürg Schmutz, Frédéric Merkt, Johannes Deiglmayr
Pubblicato in: Physical Review A, Numero 100/1, 2019, ISSN 2469-9926
Editore: American Physical Society
DOI: 10.1103/PhysRevA.100.012501

Roadmap on photonic, electronic and atomic collision physics: III. Heavy particles: with zero to relativistic speeds

Autori: Friedrich Aumayr, Kiyoshi Ueda, Emma Sokell, Stefan Schippers, Hossein Sadeghpour, Frédéric Merkt, Thomas F Gallagher, F Barry Dunning, Paul Scheier, Olof Echt, Tom Kirchner, Stephan Fritzsche, Andrey Surzhykov, Xinwen Ma, Roberto Rivarola, Omar Fojon, Lokesh Tribedi, Emily Lamour, José R Crespo López-Urrutia, Yuri A Litvinov, Vladimir Shabaev, Henrik Cederquist, Henning Zettergren, Marika S
Pubblicato in: Journal of Physics B: Atomic, Molecular and Optical Physics, Numero 52/17, 2019, Pagina/e 171003, ISSN 0953-4075
Editore: Institute of Physics Publishing
DOI: 10.1088/1361-6455/ab26ea

Autoionization rates of core-excited magnesium Rydberg atoms in electric fields using the core fluorescence as a reference

Autori: D. Wehrli, M. Génévriez, F. Merkt
Pubblicato in: Physical Review A, Numero 100/1, 2019, ISSN 2469-9926
Editore: American Institute of Physics
DOI: 10.1103/PhysRevA.100.012515

Benchmarking Theory with an Improved Measurement of the Ionization and Dissociation Energies of H 2

Autori: Nicolas Hölsch, Maximilian Beyer, Edcel J. Salumbides, Kjeld S. E. Eikema, Wim Ubachs, Christian Jungen, Frédéric Merkt
Pubblicato in: Physical Review Letters, Numero 122/10, 2019, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/PhysRevLett.122.103002

The adiabatic ionisation energy of CO 2

Autori: U. Hollenstein, K. Dulitz, F. Merkt
Pubblicato in: Molecular Physics, Numero 117/21, 2019, Pagina/e 2956-2960, ISSN 0026-8976
Editore: Taylor & Francis
DOI: 10.1080/00268976.2019.1600061

High-resolution spectroscopy of the transition of MgAr+ by isolated-core multiphoton Rydberg dissociation

Autori: M. Génévriez, D. Wehrli, F. Merkt
Pubblicato in: Molecular Physics, Numero HRMS2019, 2019, Pagina/e 1-8, ISSN 0026-8976
Editore: Taylor & Francis
DOI: 10.1080/00268976.2019.1703051

Determination of the Interval between the Ground States of Para- and Ortho- H 2

Autori: M. Beyer, N. Hölsch, J. Hussels, C.-F. Cheng, E. J. Salumbides, K. S. E. Eikema, W. Ubachs, Ch. Jungen, F. Merkt
Pubblicato in: Physical Review Letters, Numero 123/16, 2019, Pagina/e 163002, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/physrevlett.123.163002

Determination of the Interaction Potential and Rovibrational Structure of the Ground Electronic State of MgAr + Using PFI-ZEKE Photoelectron Spectroscopy

Autori: Dominik Wehrli, Matthieu Génévriez, Carla Kreis, Josef A. Agner, Frédéric Merkt
Pubblicato in: The Journal of Physical Chemistry A, Numero 124/2, 2019, Pagina/e 379-385, ISSN 1089-5639
Editore: American Chemical Society
DOI: 10.1021/acs.jpca.9b10435

Experimental and theoretical study of core-excited 3 p n d Rydberg series of Mg

Autori: Matthieu Génévriez, Dominik Wehrli, Frédéric Merkt
Pubblicato in: Physical Review A, Numero 100/3, 2019, Pagina/e 032517, ISSN 2469-9926
Editore: American Institute of Physics
DOI: 10.1103/physreva.100.032517

Magic Rydberg-Rydberg transitions in electric fields

Autori: Michael Peper, Johannes Deiglmayr, Frédéric Merkt, Carla Sanna, H. B. van Linden van den Heuvell
Pubblicato in: Physical Review A, Numero 100/3, 2019, Pagina/e 032512, ISSN 2469-9926
Editore: American Institute of Physics
DOI: 10.1103/physreva.100.032512

Precision Measurements in Few-Electron Molecules: The Ionization Energy of Metastable He 4

Autori: Luca Semeria, Paul Jansen, Gian-Marco Camenisch, Federico Mellini, Hansjürg Schmutz, Frédéric Merkt
Pubblicato in: Physical Review Letters, Numero 124/21, 2020, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/physrevlett.124.213001

Spectroscopy of Highly Excited States of the Hydrogen Atom

Autori: Simon Scheidegger, Frédéric Merkt
Pubblicato in: CHIMIA International Journal for Chemistry, Numero 74/4, 2020, Pagina/e 285-288, ISSN 0009-4293
Editore: Schweizerische Chemische Gedellschaft
DOI: 10.2533/chimia.2020.285

Deviation of the rate of the H2+ + D2 reaction from Langevin behaviour below 1 K, branching ratios for the HD2+ + H and H2D+ + D product channels, and product-kinetic-energy distributions

Autori: Katharina Höveler, Johannes Deiglmayr, Frédéric Merkt
Pubblicato in: Molecular Physics, Numero 119 (17-18), 2021, Pagina/e e1954708, ISSN 0026-8976
Editore: Taylor & Francis
DOI: 10.1080/00268976.2021.1954708

Ion-Molecule Reactions below 1 K: Strong Enhancement of the Reaction Rate of the Ion-Dipole Reaction He+ + CH3F

Autori: Valentina Zhelyazkova, Fernanda B. V. Martins, Josef A. Agner, Hansjürg Schmutz, Frédéric Merkt
Pubblicato in: Physical Review Letters, Numero 125, 2020, Pagina/e 263401, ISSN 0031-9007
Editore: American Physical Society
DOI: 10.1103/physrevlett.125.263401

Improved ionization and dissociation energies of the deuterium molecule

Autori: Hussels Joël, Hölsch Nicolas, Cheng C.F., Salumbides E.J., Bethlem Hendrick L., Eikema Kjeld S.E., Jungen C., Beyer M., Merkt Frédéric, Ubachs W.
Pubblicato in: Physical Review A, Numero 105(2), 2022, ISSN 2469-9934
Editore: American Physical Society
DOI: 10.1103/physreva.105.022820

Spectroscopic characterization of a thermodynamically stable doubly charged diatomic molecule: MgAr2+

Autori: Dominik Wehrli, Matthieu Génévriez, Frédéric Merkt
Pubblicato in: Physical Chemistry Chemical Physics, Numero 23 (18), 2021, Pagina/e 10978-10987, ISSN 1463-9076
Editore: Royal Society of Chemistry
DOI: 10.1039/d1cp00730k

Complete characterization of the 3 p Rydberg complex of a molecular ion: MgAr + . II. Global analysis of the A + 2 Π and B + 2 Σ + (3pσ,π) states

Autori: Matthieu Génévriez, Dominik Wehrli, Frédéric Merkt
Pubblicato in: The Journal of Chemical Physics, Numero 153/7, 2020, Pagina/e 074311, ISSN 0021-9606
Editore: American Institute of Physics
DOI: 10.1063/5.0015608

Cold ion chemistry within a Rydberg-electron orbit: test of the spectator role of the Rydberg electron in the He(n) + CO → C(n') + O + He reaction

Autori: Fernanda B V Martins, Valentina Zhelyazkova, Christian Seiler, Frédéric Merkt
Pubblicato in: New Journal of Physics, Numero 23 (9), 2021, Pagina/e 095011, ISSN 1367-2630
Editore: Institute of Physics Publishing
DOI: 10.1088/1367-2630/ac231d

Line shapes and line positions in PFI-ZEKE photoelectron and MATI spectra of positively charged ions

Autori: D. Wehrli, U. Hollenstein, F. Merkt
Pubblicato in: Molecular Physics, Numero 119 (10), 2021, Pagina/e e1900613, ISSN 0026-8976
Editore: Taylor & Francis
DOI: 10.1080/00268976.2021.1900613

Rydberg–Stark deceleration and trapping of helium in magnetic fields

Autori: Matija Žeško, Ondřej Tkáč, Josef A Agner, Hansjürg Schmutz, Frédéric Merkt
Pubblicato in: Journal of Physics B: Atomic, Molecular and Optical Physics, Numero 53 (19), 2020, Pagina/e 195003, ISSN 0953-4075
Editore: Institute of Physics Publishing
DOI: 10.1088/1361-6455/aba662

Molecular-physics aspects of cold chemistry

Autori: Merkt, Frédéric
Pubblicato in: Current Trends in Atomic Physics, Les Houches 2016 Lecture Notes, 2019, ISBN 9780198837190
Editore: Oxford University Press
DOI: 10.1093/oso/9780198837190.003.0003

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Cold Ion Chemistry - Experiments within a Rydberg Orbit

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