TY - JOUR
T1 - Pathways for nonsequential and sequential fragmentation of CO23+ investigated by electron collision
AU - Wang, Enliang
AU - Shan, Xu
AU - Shen, Zhenjie
AU - Gong, Maomao
AU - Tang, Yaguo
AU - Pan, Yi
AU - Lau, Kai-Chung
AU - Chen, Xiangjun
PY - 2015/5
Y1 - 2015/5
N2 - We report nonsequential and sequential fragmentation dynamics of CO23+ investigated by electron collision at an impact energy of 500 eV. The dissociation mechanisms are clearly distinguished by combined use of the Dalitz plot together with momentum correlation spectra. The angular distributions and kinetic-energy releases (KERs) of different fragmentation processes are obtained. The dissociation channels of higher excited states of the CO23+ molecular ion are opened, which are quite different from the previous studies of heavy-ion collision [N. Neumann, D. Hant, L. Ph. H. Schmidt, J. Titze, T. Jahnke, A. Czasch, M. S. Schöffler, K. Kreidi, O. Jagutzki, H. Schmidt-Böcking, and R. Dörner, Phys. Rev. Lett. 104, 103201 (2010)PRLTAO0031-900710.1103/PhysRevLett.104.103201] and intense laser field [C. Wu, C. Wu, D. Song, H. Su, Y. Yang, Z. Wu, X. Liu, H. Liu, M. Li, Y. Deng, Y. Liu, L.-Y. Peng, H. Jiang, and Q. Gong, Phys. Rev. Lett. 110, 103601 (2013)PRLTAO0031-900710.1103/PhysRevLett.110.103601]. By analyzing KERs together with the help of potential-energy curves exploration at the multireference configuration interaction level, we conclude that the sequential fragmentation occurs in the 2Π,4Π, and 2Σ+ states of the CO23+ ion. The bond length and bond angle are also determined based on the linear fragmentation, indicating that electron impact fragmentation is a potential method to precisely reconstruct the geometry of neutral molecules.
AB - We report nonsequential and sequential fragmentation dynamics of CO23+ investigated by electron collision at an impact energy of 500 eV. The dissociation mechanisms are clearly distinguished by combined use of the Dalitz plot together with momentum correlation spectra. The angular distributions and kinetic-energy releases (KERs) of different fragmentation processes are obtained. The dissociation channels of higher excited states of the CO23+ molecular ion are opened, which are quite different from the previous studies of heavy-ion collision [N. Neumann, D. Hant, L. Ph. H. Schmidt, J. Titze, T. Jahnke, A. Czasch, M. S. Schöffler, K. Kreidi, O. Jagutzki, H. Schmidt-Böcking, and R. Dörner, Phys. Rev. Lett. 104, 103201 (2010)PRLTAO0031-900710.1103/PhysRevLett.104.103201] and intense laser field [C. Wu, C. Wu, D. Song, H. Su, Y. Yang, Z. Wu, X. Liu, H. Liu, M. Li, Y. Deng, Y. Liu, L.-Y. Peng, H. Jiang, and Q. Gong, Phys. Rev. Lett. 110, 103601 (2013)PRLTAO0031-900710.1103/PhysRevLett.110.103601]. By analyzing KERs together with the help of potential-energy curves exploration at the multireference configuration interaction level, we conclude that the sequential fragmentation occurs in the 2Π,4Π, and 2Σ+ states of the CO23+ ion. The bond length and bond angle are also determined based on the linear fragmentation, indicating that electron impact fragmentation is a potential method to precisely reconstruct the geometry of neutral molecules.
UR - http://www.scopus.com/inward/record.url?scp=84930665177&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84930665177&origin=recordpage
U2 - 10.1103/PhysRevA.91.052711
DO - 10.1103/PhysRevA.91.052711
M3 - RGC 22 - Publication in policy or professional journal
SN - 1050-2947
VL - 91
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 5
M1 - 52711
ER -