Role of a Neighbor Ion in the Fragmentation Dynamics of Covalent Molecules

Méry, A.; Agnihotri, A. N.; Douady, Julie; Fléchard, X.; Gervais, B.; Guillous, S.; Iskandar, Wael; Jacquet, E.; Matsumoto, Jun; Rangama, Jimmy; Ropars, F.; Safvan, C. P.; Shiromaru, H.; Zanuttini, David; Cassimi, A.

doi:10.1103/physrevlett.118.233402

Cited by 19 publications

(3 citation statements)

References 26 publications

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“…For the clusters consisting of small molecules, the neighboring molecule may act as a spectator, as observed in Ref. [225] for (N 2 ) 2 . Nevertheless, it can also induce a fast dissociation pathway which enhances the fragmentation of its neighbor, as observed in Ref.…”

Section: Fragmentation Dynamics In Collisions Of Ions With Molecules ...mentioning

confidence: 77%

Atomic structure and collision dynamics with highly charged ions

Ma¹,

Zhang²,

Wen³

et al. 2022

Chinese Phys. B

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The research progresses on the investigations of atomic structure and collision dynamics with highly charged ions based on the heavy ion storage rings and electron ion beam traps in recent 20 years are reviewed. The structure part covers test of quantum electrodynamics and electron correlation in strong Coulomb field studied through dielectronic recombination spectroscopy and VUV/x-ray spectroscopy. The collision dynamics part includes charge exchange dynamics in ion-atom collisions mainly in Bohr velocity region, ion induced fragmentation mechanisms of molecules, hydrogen-bound and van de Waals bound clusters, interference and phase information observed in ion-atom/molecule collisions. With this achievements, two aspects of theoretical studies related to low energy and relativistic energy collisions are presented. The applications of data relevant to key atomic processes like dielectronic recombination and charge exchanges involving highly charged ions are discussed. At end of this review, some future prospects of research related to highly charged ions are proposed.

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Section: Fragmentation Dynamics In Collisions Of Ions With Molecules ...mentioning

confidence: 77%

Atomic structure and collision dynamics with highly charged ions

Ma¹,

Zhang²,

Wen³

et al. 2022

Chinese Phys. B

View full text Add to dashboard Cite

show abstract

“…Although weakly bound rare gas dimers have been studied extensively during the last two decades [2][3][4][5][6][7][8][9][10][11][12][13][14][15] , studies of dimers consisting of one or two diatomic molecules remain rare, some examples can be found in refs. [16][17][18][19][20][21][22] . Therefore, it is essential to understand the structure and fragmentation/dissociation dynamics of charged molecular dimers at the level of molecular motion 2 .…”

mentioning

confidence: 99%

“…In 2003, ICD was first observed experimentally in Ne 2 rare gas cluster following inner-valence electron ionization 5 . Later, numerous experiments, where photons, electrons, and heavy ions were used as projectiles, have been performed to confirm the ICD and new dissociation mechanisms have been found in different rare gas dimers or larger clusters [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][23][24][25][26][27][28] , such as radiative charge transfer 8,15 or electron-transfer-mediated decay 10,27 . For this kind of processes, the energy and charge transfer are mediated by virtual photon/Coulomb interaction, or electron transfer.…”

mentioning

confidence: 99%

Heavy N+ ion transfer in doubly charged N2Ar van der Waals cluster

Zhu

Yan

et al. 2020

Nat Commun

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Van der Waals clusters are weakly bound atomic/molecular systems and are an important medium for understanding micro-environmental chemical phenomena in bio-systems. The presence of neighboring atoms may open channels otherwise forbidden in isolated atoms/molecules. In hydrogen-bond clusters, proton transfer plays a crucial role, which involves mass and charge migration over large distances within the cluster and results in its fragmentation. Here we report an exotic transfer channel involving a heavy N + ion observed in a doubly charged cluster produced by 1 MeV Ne 8+ ions: (N 2 Ar) 2+ →N + +NAr +. The neighboring Ar atom decreases the N 2þ 2 barrier height and width, resulting in significant shorter lifetimes of the metastable molecular ion state N 2þ 2 (X 1 Σ þ g). Consequently, the breakup of the covalent N + −N + bond, the tunneling out of the N + ion from the N 2þ 2 potential well, as well as the formation of an N−Ar + bound system take place almost simultaneously, resulting in a Coulomb explosion of N + and NAr + ion pairs.

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