Three-body fragmentation dynamics of CH2CCH23+ investigated by 50-keV/u Ne8+<

Strong field-induced three-body fragmentation dynamics of CH3Cl2+

“…We first obtained the Dalitz plot, which is an extremely useful tool in reconstructing the kinematic information of threebody dissociation pathways [9,11,17,18]. The scale of the Dalitz plot is normalized by energy, and momentum conservation confines all the dissociation events in a circle of radius 1/3.…”

“…where i = 1, 2, 3 represent the fragments CH + 2 , Cl + , and H, respectively and p i represents the momentum of each fragment in the center-of-mass frame of the molecule [18]. Usually, the coordinates x D and y D represent the relationship between the kinetic energy of the ith fragment in the center-of-mass frame normalized by the total KER to the final arrangement of the momentum vectors.…”

“…been disentangled. Recently, the three-body fragmentation of more complex multiply-charged hydrocarbons [11,18,[21][22][23][24][25][26][27][28] was explored which can occur either by simultaneous bondbreaking in a single step (concerted) or stepwise with a longlived intermediate (sequential). Interestingly, an additional three-body fragmentation mechanism involving intramolecular migration was reported in SO 2 [8], C 2 H 2 [23,29] and 1,3butadiene [6].…”

Atomic structure and collision dynamics with highly charged ions

“…This signature agrees with the simultaneous dissociation. So far, the investigation of HCIs-induced fragmentation has been extended to other molecules like N 2 O, [204] OCS, [205] and small organic molecules like C 2 H 2 , [206,207] C 2 H 4 , [208] and C 3 H 4 [209][210][211] It was found that fragmentation mechanisms and their corresponding branching ratios are dependent on the incident energy, charge state of the HCIs, and excitation state of the parent molecular ion. [203,212,213] For instance, if a molecule is triply or quadruply ionized, and the generated molecular ion lies in low excited states, the subsequent decay pathway tends to be sequential dissociation.…”

Fragmentation of CF4q+ (q=2,3)<

“…On the other hand, although the three-body fragmentation dynamics of triply charged molecular ions such as CO 2 3+ [20][21][22], CS 2 3+ [23], SO 2 3+ [24], C 2 H 2 3+ [25,26], and CH 2 CCH 2 3+ [27] has been extensively studied, the dissociation dynamics of the high-symmetry molecules such as CF 4 and the evidence of geometry deformation of its cation still capture many interests. In its ground states, CF 4 has a tetrahedral structure with T d symmetry.…”