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Rotational spectrum of asymmetric top molecules in combined static and laser fields
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10.1063/1.3624774
/content/aip/journal/jcp/135/6/10.1063/1.3624774
http://aip.metastore.ingenta.com/content/aip/journal/jcp/135/6/10.1063/1.3624774

Figures

Image of FIG. 1.
FIG. 1.

Laboratory and molecular fixed coordinate frames and field configuration.

Image of FIG. 2.
FIG. 2.

Structure of the (a) fluorobenzene and (b) pyridazine molecules.

Image of FIG. 3.
FIG. 3.

Laser interaction term H L , see Eq. (4), in units of cm−1 with I = 1011 W cm−2, for (a) χ = π/2 and (b) θ = π/2 (b) for fluorobenzene (solid) and pyridazine (dash).

Image of FIG. 4.
FIG. 4.

(a) Ground state energy, (b) ⟨cos 2θ⟩, (c) ⟨sin 2χ⟩, and (d) ⟨K 2⟩, as a function of the intensity of a linearly polarized laser field, for the fluorobenzene (solid) and pyridazine (dashed) molecules.

Image of FIG. 5.
FIG. 5.

(a)–(c) Energies and the expectation values, (d)–(f) ⟨cos θ S ⟩, (g)–(i) ⟨cos 2θ⟩, and (j)–(l) ⟨cos 2χ⟩ for a constant field E S = 20 kV cm−1 as a function of the intensity of the laser field for for the first states with both M + q + K and K even for fluorobenzene. The states are 0000 (solid black), 1011 (solid green), 1010 (dashed–dotted black), 2022 (dashed–dotted green), 2021 (dashed black), and 3032 (dashed green). The spectrum (a, b, c) contains also highly excited states (very thin lines).

Image of FIG. 6.
FIG. 6.

(a)–(c) Energies and the expectation values, (d)–(f) ⟨cos θ S ⟩, (g)–(i) ⟨cos 2θ⟩, and (j)–(l) ⟨cos 2χ⟩ for a constant field E S = 20 kV cm−1 as a function of the intensity of the laser field for for the first states with both M + q + K and K even for pyridazine. The states are 0000 (solid black), 1011 (solid green), 2022 (dashed–dotted black), 1010 (dash–dotted green), 2021 (dashed black), and 2212 (dashed green). The spectrum (a, b, c) contains also highly excited states (very thin lines).

Image of FIG. 7.
FIG. 7.

(a)–(c) Energies and the expectation values, (d)–(f) ⟨cos θ S ⟩, and (g)–(i) ⟨cos 2θ⟩ for a constant I = 1010 W cm−2 as a function of the strength of the static field for for the energetically lowest states with both M + q + K and K even for fluorobenzene. The states are 0000 (solid black), 1010 (solid green), 1011 (dashed–dotted black), 2020 (dashed–dotted green), 2021 (dashed black), and 2022 (dashed green). The spectrum (a, b, c) contains also highly excited states (very thin lines).

Image of FIG. 8.
FIG. 8.

Same as Fig. 7 but for pyridazine.

Image of FIG. 9.
FIG. 9.

One-dimensional probability density distribution in each Euler angle for the ground state of pyridazine for (a) E S = 20 kV cm−1 and I = 1011 W cm−2 (solid), (b) E S = 50 kV cm−1 and I = 1011 W cm−2 (dashed–dotted), and (c) E S = 20 kV cm−1 and I = 5 × 1011 W cm−2 (dashed).

Image of FIG. 10.
FIG. 10.

(a) Energies and expectation values, (b) ⟨cos θ S ⟩, (c) ⟨cos 2θ⟩, and (d) ⟨M 2⟩ for pyridazine in the presence of a static field E S = 20 kV cm−1 and a laser field I = 1011 W cm−2 as a function of β for the energetically lowest states with both M + q + K an K even. The states are 0000 (solid black), 1011 (solid green), 2022 (dashed–dotted black), 1010 (dashed–dotted green), 2021 (dashed black), and 2212 (dashed green).

Image of FIG. 11.
FIG. 11.

Width ΔE (a) and electrostatic field strength E S (b) at the avoided crossing taking place between the states 2020 and 2021 for pyridazine, for I = 1010 W cm−2 and different inclination angles β.

Tables

Generic image for table
Table I.

Action of the symmetry operations on the Euler angles.

Generic image for table
Table II.

Relevant data for fluorobenzene50–52 and pyridazine.53,54

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/content/aip/journal/jcp/135/6/10.1063/1.3624774
2011-08-12
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Rotational spectrum of asymmetric top molecules in combined static and laser fields
http://aip.metastore.ingenta.com/content/aip/journal/jcp/135/6/10.1063/1.3624774
10.1063/1.3624774
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