RT Journal Article
T1 Velocity Map Imaging and Theoretical Study of the Coulomb Explosion of CH3I under Intense Femtosecond IR Pulses
A1 Corrales Castellanos, María Eugenia
A1 Gitzinger, Gregory
A1 González Vázquez, Jesús
A1 Loriot, Vincent
A1 Nalda Míguez, Rebeca de
A1 Bañares Morcillo, Luis
AB The Coulomb explosion of CH3Iinanintense(10 100 TW cm 2),ultrashort (50 fs) and nonresonant (804 nm) laserfield has been studied ex-perimentally and justified theoretically. Ion imageshave been recorded using thevelocity map imaging (VMI) technique for different singly and multiply charged ionfragments, CH3p+(p=1)andIq+(qe3), arising from different Coulomb explosionchannels. The fragment kinetic energy distributions obtained from the measuredimages for these ion fragments show significantly lower energies than those expectedconsidering only Coulomb repulsion forces. The experimental results have beenrationalized in terms of one-dimensional wave packet calculations on ab initiopotential energy curves of the different multiply charged species. The calculationsreveal the existence of a potential energy barrier due to a bound minimum in thepotential energy curve of the CH3I2+species and a strong stabilization with respect tothe pure Coulombic repulsion for the higher charged CH3In+(n=3,4)species.
PB ACS
SN 1089-5639
YR 2011
FD 2011
LK https://hdl.handle.net/20.500.14352/96356
UL https://hdl.handle.net/20.500.14352/96356
LA eng
NO María E. Corrales, Gregory Gitzinger, Jesús González-Vázquez, Vincent Loriot, Rebeca de Nalda, and Luis BañaresThe Journal of Physical Chemistry A 2012 116 (11), 2669-2677DOI: 10.1021/jp207367a
NO Ministerio de Ciencia e Innovación (España)
NO European Commission
DS Docta Complutense
RD 7 jul 2025