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Local control of molecular fragmentation: The role of orientation
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10.1063/1.2127930
/content/aip/journal/jcp/123/20/10.1063/1.2127930
http://aip.metastore.ingenta.com/content/aip/journal/jcp/123/20/10.1063/1.2127930
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Excitation scheme for the molecule. The interaction with the pump pulse prepares an excited-state rotational-vibrational wave packet. The application of a control field pumps energy into the system and eventually fragments of and are built. In the calculation, the predissociation channel leading to neutral and atoms is closed.

Image of FIG. 2.
FIG. 2.

Local control for fixed molecular orientation. The upper panel contains the control field which is switched on at . Its time dependence follows the vibrational dynamics which is illustrated in terms of the bond-length expectation value in panel (b). When the bond length exceeds values larger than , the fragmentation yield increases and molecular fragmentation occurs with 100% efficiency [panel (c)]. The expectation value of the vibrational Hamiltonian is shown in panel (d). There, the energy scale is the same as that used for the potentials displayed in Fig. 1.

Image of FIG. 3.
FIG. 3.

Local control including rotational motion. Here the control field [panel (a)] is constructed from the expectation value of the radial momentum operator . Panels (b), (c), and (d) show the bond-length expectation value, the fragmentation yield, and the expectation value of the vibrational Hamiltonian, respectively.

Image of FIG. 4.
FIG. 4.

Local control including rotational motion. The radial [panel (a)] and angular densities [panel (b)] are displayed for times up to .

Image of FIG. 5.
FIG. 5.

Local control including rotational motion and an additional static electric field . The control field is constructed from the expectation value of . The curves for field strengths of (short dashed line), (long dashed line), and (solid line) are shown. The same quantities as in Figs. 2 and 3 are contained in the different panels.

Image of FIG. 6.
FIG. 6.

Modulus of the rotational-vibrational wave functions at a time of . Panels (a), (b), and (c) show the functions obtained for static fields with strengths of , , and , respectively.

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/content/aip/journal/jcp/123/20/10.1063/1.2127930
2005-11-30
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Local control of molecular fragmentation: The role of orientation
http://aip.metastore.ingenta.com/content/aip/journal/jcp/123/20/10.1063/1.2127930
10.1063/1.2127930
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