Dynamics of Glycine Dications in the Gas Phase: Ultrafast Intramolecular Hydrogen Migration versus Coulomb Repulsion

Maclot, Sylvain; Piekarski, Dariusz G.; Domaracka, A.; Méry, A.; Vizcaino, Violaine; Adoui, L.; Martín, Fernando; Alcamı́, Manuel; Huber, B. A.; Rousseau, Patrick; Díaz‐Tendero, Sergio

doi:10.1021/jz4020234

Cited by 80 publications

(90 citation statements)

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“…For example, the charge migration on the fs time scale after hole formation, which triggers atomic motion and molecular fragmentation [2] or the localization of multiple charges in specific molecular groups and the subsequent Coulomb explosion has recently been observed [3,4]. Ultrafast nuclear rearrangements have been also observed in pump-probe experiments [5]; such processes compete with the expected charge separation in multiply charged molecules [6][7][8]. Therefore, a detailed knowledge of the response of complex molecular systems to ionization or excitation and its influence on chemical reactivity is still a relevant topic today [9,10].…”

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“…Therefore, a detailed knowledge of the response of complex molecular systems to ionization or excitation and its influence on chemical reactivity is still a relevant topic today [9,10]. In this context, recent combined experimental and theoretical works have been very valuable in providing pictures of the ion-induced ionization or fragmentation of complex molecular systems [7,8,11,12]. However, a meaningful comparison between experimental and theoretical results requires knowledge of the energy transferred in the collision, which is in fact represented by a wide energy distribution due to interactions at different impact parameters.…”

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

et al. 2016

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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 mass spectra measured in both types of experiments allows us to accurately determine the distribution of the energy deposited in the ionized molecule as a result of the collision. The relation of two experimental techniques and theory shows a strong correlation between the excited states of the ionized molecule with the computed dissociation pathways, as well as with charge localization or delocalization.

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

et al. 2016

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“…Расчеты динамики фрагментации двухзарядных ионов Gly 2+ в зави-симости от энергии возбуждения в диапазоне E int = 0.03−4 eV были проведены в работе [12]. Было показано, что в рамках используемой модели при таких энергиях возбуждения фрагментация должна при-водить в основном к образованию пары ионов-фрагментов NH 2 CH + 2 и COOH + .…”

Section: поступило в редакцию 18 октября 2016 гunclassified

“…Было показано, что в рамках используемой модели при таких энергиях возбуждения фрагментация должна при-водить в основном к образованию пары ионов-фрагментов NH 2 CH + 2 и COOH + . Эксперимент показал, что энергия возбуждения образу-ющихся в процессах {2102} и {2002} ионов Gly 2+ выше рассмот-ренного авторами [12] диапазона. Оценки величины максимальной кинетической энергии фрагментов, проведенные в настоящей работе по ширине пиков двумерной карты совпадений, дают для H + ∼ 13 eV, для NH 2 CH + 2 ∼ 4 eV и для COOH + ∼ 2.7 eV, что удовлетворительно согласуется с данными работы [9].…”

Section: поступило в редакцию 18 октября 2016 гunclassified

Ионизация молекул глицина alpha-частицами keV-энергий

Afrosimov¹,

Basalaev²,

Кузьмичев³

et al. 2017

Письма В Журнал Технической Физики

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Методом "многостоповой" времяпролетной масс-спектрометрии исследован механизм радиационных повреждений молекул глицина, находящихся в газовой фазе, при взаимодействии с ионами He2+ с энергией Ep = 4 keV/a.m.u. Впервые измерены относительные сечения различных элементарных процессов, происходящих при однократных столкновениях молекул глицина с ионами. Обнаружено различие в фрагментации промежуточных двухзарядных ионов, формирующихся в процессах захвата одного электрона с ионизацией и двухэлектронного захвата, что объясняется разницей в энергии возбуждения молекулярных ионов. DOI: 10.21883/PJTF.2017.07.44470.16531

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“…1) on many different types of clusters and processes, e.g. weakly bound van der Waals (vdW), metallic [8][9][10], nanodroplets [11][12][13], fullerenes [14,15] PAHs (Polycyclic Aromatic Hydrocarbons)/carbon-layered [16][17][18][19], water and mixed-water clusters [20][21][22][23][24] and clathrates [25,26]; spectroscopic and collisional processes of excited molecules in the gas phase [27][28][29]; production of charged cluster ions [30]; electron impact ionization of clusters; Coulomb explosion [31,32]; high harmonic generation [33]; photon/electron irradiation [34]; photo-electron spectra of small clusters [35]; nanoplasma generated in atomic and molecular clusters by intense laser pulses [36]; phase diagrams including supercritical phases [37], and eventually, spectroscopy [38] and molecular dynamics studies involving biological media and medical applications [39][40][41][42].The contributions to this issue represent the studies both at the fundamental level of elementary mechanisms …”

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Atomic cluster collisions: ISACC-2015 (7th International Symposium)*

2017

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Abstract. The ISACC 2015 brought together nearly a hundred scientists in the field of atomic and molecular cluster physics from around the world. We deliver the Editorial of a topical issue compiling/presenting original research results from some of the participants on both experimental and theoretical studies involving research areas from small clusters to extended molecular systems in the field.The idea of this Topical Issue was to collect recent results which have being produced in this area by the international community and, therefore, to provide a current state-of-the-art description of what is being done in the field of structure formation and dynamics of nuclear, atomic and molecular clusters, nano-objects, ensembles of nanoparticles, nanostructures, biomolecules and biomolecular systems. Although the current Topical Issue is not a collection of conference proceedings, the participants of the 7th International Symposium "Atomic Cluster Collisions" (ISACC 2015) made the contribution by submitting their novel and original results.Since 2003, the ISACC meetings [1][2][3][4][5][6][7] promote the growth and exchange of scientific information on the structure, properties and dynamics of complex nuclear, atomic, molecular, cluster, nanoscopic and biological systems studied primarily by means of photonic, electronic, heavy particle and atomic collisions. In ISACC 2015, [7] held at Madrid on the 18-21 July as a satellite of the ICPEAC 2015 1 , particular attention was devoted to dynamical phenomena, many-body effects taking place in clusters, nanostructures, molecular and biological systems, which included problems of fusion, fragmentation, collective electron excitations, phase transitions, and radiation damage among several exciting issues. Both experimental and theoretical aspects of cluster physics uniquely placed between nuclear physics on one hand and atomic, This themed issue, as well as the ISACC 2015 Symposium, attends to a wide range of techniques for spectroscopy and collision dynamics covering an ample field of phenomena. Techniques vary from ab initio calculations and new theoretical models to state of-the-art laboratory methodologies. Thus, this publication brings together theoretical and also experimental articles. Experimental techniques, rapidly becoming more accurate, demand state-of-the-art theoretical methodologies for the interpretation of the measurements. The studied species show sizes and varied compositions from small-to large sized systems. Studies encompass from tri-and tetra-atomic systems and their corresponding clusters containing a large number of units, up to biological species with scores of atoms. Briefly, sessions included topics (see Fig. 1) on many different types of clusters and processes, e.g. weakly bound van der Waals (vdW), metallic [8][9][10], nanodroplets [11][12][13], fullerenes [14,15] PAHs (Polycyclic Aromatic Hydrocarbons)/carbon-layered [16][17][18][19], water and mixed-water clusters [20][21][22][23][24] and clathrates [25,26]; spectroscopic and collisional proce...

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Dynamics of Glycine Dications in the Gas Phase: Ultrafast Intramolecular Hydrogen Migration versus Coulomb Repulsion

Cited by 80 publications

References 46 publications

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

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

Ионизация молекул глицина alpha-частицами keV-энергий

Atomic cluster collisions: ISACC-2015 (7th International Symposium)*

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