Explanipedia

Timing of charge migration in betaine by impact of fast atomic ions Open

Patrick Rousseau, Jesús González‐Vázquez, Dariusz G. Piekarski, Janina Kopyra, Alicja Domaracka , et al. · 2021

Intramolecular charge migration induced by fast highly charged atomic ions in the betaine zwitterion is ultrafast and adiabatic.

Polypeptide formation in clusters of β-alanine amino acids by single ion impact Open

Patrick Rousseau, Dariusz G. Piekarski, Michaël Capron, Alicja Domaracka, L. Adoui , et al. · 2020

The low energy beamline of the FISIC experiment: current status of construction and performance Open

D. Schury, A. Méry, Jean-Marc Ramillon, L. Adoui, J.-Y. Chesnel , et al. · 2020

Synopsis Ion-ion collisions between slow (kev/u) and fast (MeV/u) ions play an important role in for example astrophysical or inertial fusion plasmas as well as in ion-matter interaction. In this regime the energy transfer is maximum, as a…

Numerical simulations of purification and final charge state analysis of the slow ion beam for the FISIC project Open

Ajit Kumar, A. Méry, L. Adoui, J.-Y. Chesnel, A. Lévy , et al. · 2017

XXX International Conference on Photonic, Electronic, and Atomic Collisions (ICPEAC 2017), 26 July - 1 August 2017, Cairns, Australie

Determination of Energy-Transfer Distributions in Ionizing Ion-Molecule Collisions Open

Sylvain Maclot, Rudy Delaunay, Dariusz G. Piekarski, Alicja Domaracka, Bernd Huber , et al. · 2016

The ionization and fragmentation of the nucleoside thymidine in the gas phase has been investigated by combining ion collision with state-selected photoionization experiments and quantum chemistry calculations. The comparison between the m…

Corrigendum: Formation and Fragmentation of Protonated Molecules after Ionization of Amino Acid and Lactic Acid Clusters by Collision with Ions in the Gas Phase Open

Jean‐Christophe Poully, Violaine Vizcaino, Lucas Schwob, Rudy Delaunay, Jaroslav Kočišek , et al. · 2015

In the spectra of Figure 4, fragments labeled 45 for alanine, 45 for 13C-alanine and 46 for lactic acid should be 44, 44 and 45, respectively. In the text, on p. 2393, lines 19 and 20, 45 should be 44 and 46 should be 45. These typos have …

Failure of hydrogenation in protecting polycyclic aromatic hydrocarbons from fragmentation Open

Michael Gatchell, Mark H. Stockett, N. de Ruette, Tao Chen, Linda Giacomozzi , et al. · 2015

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Isomer effects in fragmentation of Polycyclic Aromatic Hydrocarbons Open

Mark H. Stockett, Michael Gatchell, N. de Ruette, Linda Giacomozzi, Tao Chen , et al. · 2015

Radiative cooling of hot Cn−and CnH−molecules Open

M. Kamińska, R F Nascimento, Mark H. Stockett, E. K. Anderson, Rudy Delaunay , et al. · 2015

We have measured the rates of neutrals produced from 10 keV Cn− or CnH− (n=2, 4, 6, 8, and 10) ion beams stored in one of DESIREE's 14 K storage rings. For n=4, 6, and 8 we observe marked differences between Cn− and CnH− cooling rates as i…

Slow ion interaction with N-methylglycine and N-acetylglycine Open

Jaroslav Kočišek, Sergio Diaz Tendero, Dariusz Grzegorz Piekarskh, Rudy Delaunay, Bernd Huber , et al. · 2015

N-acetyl glycine and N-methyl glycine molecules in the gas phase are ionized by electron exchange with slow O6+ ions at an energy of 48 keV. After ionization, the methyl and acetyl substituted glycines dissociate into fragments analogous t…

Non-statistical fragmentation of large molecules in collisions with atoms Open

Mark H. Stockett, L. Adoui, E. K. Anderson, Tao Chen, J.-Y. Chesnel , et al. · 2015

Non-statistical fragmentation processes are important when Polycyclic Aromatic Hydrocarbon (PAH) molecules, fullerenes, or other large molecules collide with atoms at center-of-mass energies from a few tens to a few hundreds of eV. The typ…

Fragmentation studies of Hydrogenated-Pyrene Polycyclic Aromatic Hydrocarbons in collisions with He Open

N. de Ruette, Michael Gatchell, Mark H. Stockett, Linda Giacomozzi, Tao Chen , et al. · 2015

We have studied the fragmentation of Pyrene or hydrogenated Pyrene cations (C16H+10+x with x = 0, 5, 6 and 16) in collision with He. We find that the carbon backbone fragmentation cross section increases with the number of H atoms added. T…

Unusual hydrogen and hydroxyl migration in the fragmentation of excited doubly-positively-charged amino acids in the gas phase Open

Sergio Díaz‐Tendero, Dariusz G. Piekarski, Manuel Alcamı́, Fernando Martı́n, Sylvain Maclot , et al. · 2015

We present a combined experimental and theoretical study of the fragmentation of doubly-positively- charged amino acids in the gas phase. The combination of ab initio molecular dynamics simulations with ion- molecule collisions followed by…

Formation and fragmentation of protonated molecules after ionization of molecular clusters with multiply charged ions Open

Violaine Vizcaino, Jean‐Christophe Poully, Lucas Schwob, Rudy Delaunay, Jaroslav Kočišek , et al. · 2015

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H2 formation from Polycyclic Aromatic Hydrocarbon molecules Open

Tao Chen, Michael Gatchell, Mark H. Stockett, Rudy Delaunay, Alicja Domaracka , et al. · 2015

In this work we study statistical fragmentation of Polycyclic Aromatic Hydrocarbon (PAH) molecules following collisions with keV ions. Dissociation and transition state energies for H- and H2-emissions from PAHs have been calculated and a …

Charge and energy flows in ionised thymidine Open

Sylvain Maclot, Rudy Delaunay, Dariusz G. Piekarski, Alicja Domaracka, Bernd Huber , et al. · 2015

We present a combined experimental and theoretical study of the ionisation and fragmentation of the nucleoside thymidine in the gas phase. Two sources of ionisation/excitation are used, namely UV photons and low-energy multiply charged ion…

Molecular dynamics studies of impulse driven reactions in molecules and molecular clusters Open

Michael Gatchell, Rudy Delaunay, Mark H. Stockett, Patrick Rousseau, Alicja Domaracka , et al. · 2015

We have used molecular dynamics methods to study collisions between atoms and molecules or molecular clusters. We find that these collisions may yield highly reactive molecular fragments and efficient intracluster covalent bond-forming rea…

Fusion reaction dynamics of fullerene molecules Open

Yang Wang, Michael Gatchell, Henning Zettergren, Patrick Rousseau, Tao Chen , et al. · 2015

Systematic molecular dynamics simulations based on the self-consistent charge density functional tight-binding method have been performed for the molecular collisions inside clusters of fullerene molecules, after prompt atom knockouts by t…

Primary processes: from atoms to diatomic molecules and clusters Open

X. Fléchard, L. Adoui, G. Ban, P. Boduch, A. Cassimi , et al. · 2015

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Ion-Induced Reactivity in Pyrene Clusters Open

Michael Gatchell, Rudy Delaunay, Sylvain Maclot, Tao Chen, Mark H. Stockett , et al. · 2015

We report experimental indications of chemical reactions inside clusters of pyrene (C16H10) molecules following collisions with 11.25 keV He+ - and 12.0 keV Ar2+ ions. It appears that bond-forming reactions are more likely with the heavier…

Unusual hydroxyl migration in the fragmentation of β-alanine dication in the gas phase Open

Dariusz G. Piekarski, Rudy Delaunay, Sylvain Maclot, L. Adoui, Fernando Martı́n , et al. · 2015

Experimental and theoretical investigations show that hydroxyl migration leads to unexpected fragmentation dynamics of β-alanine dication in the gas phase.

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