New highly charged fullerene ions: Production and fragmentation by slow ion impact

Jin, Jian Xun; Khemliche, H.; Prior, M. H.; Xie, Z. Q.

doi:10.1103/physreva.53.615

Cited by 75 publications

(28 citation statements)

References 19 publications

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“…This shows that the dissociation of C 70 q+ is an exothermic process for q ജ 6, i.e., the same thermodynamical stability limit as for C 60 q+ . 17,18 Note that higher charge states than q = 5 have been observed in the experiments, 6,34 which was explained by the existence of fission barriers. 34 The competition between the decay pathways are also similar for C 70 q+ and C 60 q+ but the slopes are different.…”

Section: E Dissociation Energiesmentioning

confidence: 89%

“…[31][32][33] However, in order to produce highly charged species close to the ultimate stability limit, short intense laser pulses or highly charged ions are needed as ionizing agents. Jin et al 6 used Bi 44+ ions to multiply ionize a mixture of C 60 and C 70 ; intact fullerenes with charge states up to 9+ and 6+ were observed, respectively. To our knowledge, there is only one experimental study in which C 70 q+ ions with q Ͼ 6 have been observed.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Theoretical study of the stability of multiply charged C70 fullerenes

Zettergren

Sánchez‐Sanz

Díaz‐Tendero

et al. 2007

The Journal of Chemical Physics

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We have calculated the electronic energies and optimum geometries of C(70) (q+) and C(68) (q+) fullerenes (q=0-14) by means of density functional theory. The ionization energies for C(70) and C(68) fullerenes increase more or less linearly as functions of charge, consistent with the previously reported behavior for C(60) and C(58) [S. Diaz-Tendero et al., J. Chem. Phys. 123, 184306 (2005)]. The dissociation energies corresponding to the C(70) (q+)-->C(68) (q+)+C(2), C(70) (q+)-->C(68) ((q-1)+)+C(2) (+), C(70) (q+)-->C(68) ((q-2)+)+C(+)+C(+), C(70) (q+)-->C(68) ((q-3)+)+C(2+)+C(+), and C(70) (q+)-->C(68) ((q-4)+)+C(2+)+C(2+) decay channels show that C(70) (q+) (like C(60) (q+)) is thermodynamically unstable for q>or=6. However, the slope of the dissociation energy as a function of charge for a given decay channel is different from that of C(60) (q+) fullerenes. On the basis of these results, we predict q=17 to be the highest charge state for which a fission barrier exists for C(70) (q+).

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Section: E Dissociation Energiesmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 98%

Theoretical study of the stability of multiply charged C70 fullerenes

Zettergren

Sánchez‐Sanz

Díaz‐Tendero

et al. 2007

The Journal of Chemical Physics

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“…Moreover, for electron impact ionization, only at electron energies larger than about 45 eV can dissociative ionization reactions be observed for time scales of several µs [4]. Finally, C 60 can be charged up to z = 9+ without being destroyed in a Coulomb explosion [5,6].…”

Section: Introductionmentioning

confidence: 97%

Stability of multiply charged fullerene ions

Scheier

Dünser

Senn

et al. 1999

The European Physical Journal D

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“…In addition, some coincidence experiments have been carried out (using either highly charged ion projectiles or charged C 60 ion projectiles) where two fragmentation products from C 60 have been identified, thereby providing more information on the fragmentation dynamics [11,[19][20][21][22][23]. The fragmentation behavior is observed to be strongly dependent on the charge state of the fullerene after the collision [24] and on the nature of the projectile ion used [25].…”

Section: Event-by-event Analysis Of Collision-induced Cluster-ion Framentioning

confidence: 99%