<i>Angular Momentum: Understanding Spatial Aspects in Chemistry and Physics</i>

Zare, Richard N.; Harter, William G.

doi:10.1063/1.2811251

Cited by 520 publications

(945 citation statements)

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“…The states |JKM are the eigenstates of the square of the angular momentum operator J 2 and of its projections, J Z and J z on the body-fixed Z-axis and space-fixed z-axis, respectively [71]. The molecular parameters of the CH 3 I molecule used in the numerical computations are given in Tab.…”

Section: Model Systemmentioning

confidence: 99%

Observation of the field-free orientation of a symmetric-top molecule by terahertz laser pulses at high temperature

et al. 2016

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We investigate experimentally and numerically the field-free orientation of the symmetric top molecule of methyl-iodide at high temperature using a terahertz radiation generated by a plasma induced by a two-color laser beam. The degree of orientation is measured from the free-induction decay emitted by the sample. The observed experimental signal is reproduced with a good accuracy by numerical simulations.

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Section: Model Systemmentioning

confidence: 99%

Observation of the field-free orientation of a symmetric-top molecule by terahertz laser pulses at high temperature

et al. 2016

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“…This clearly goes some way toward bringing the lab and molecular frames together and does so in a way that is easily quantified (in terms of the relative, anisotropic populations of M J rotational sublevels) on the basis of well-established angular momentum coupling theory. 88,89 However, this approach is clearly not applicable in instances where one wishes to work with isotropically aligned samples of ground-state molecules. Driven by this limitation, more general methods for inducing alignment using intense laser fields have begun to be developed.…”

Section: Nonresonant Dynamic Stark Effectmentioning

confidence: 99%

A Stark Future for Quantum Control

2010

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We present an overview of developments using the nonresonant dynamic Stark effect within the fields of time-resolved molecular dynamics and quantum control, drawing on examples from our own recent work. Particular emphasis is placed on the notion that "dynamics" and "control" are not distinct disciplines and that a clear synergy exits between these areas which has, up to now, been somewhat underexploited. The dynamic Stark effect is a universal interaction which we expect to have broad applicability.

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“…Due to a coupling of the Π state with a nearby Σ state [37], the levels with the same Ω are split into nearly-degenerate doublets whose members have opposite parities. The Ω doubling of the 2 Π 3 2 state of OH increases as J 3 , whereas that of the 2 Π 1 2 state increases linearly with J [25]. In our study, we used the values of the Ω doubling listed in Table 8.24 of ref.…”

Section: Integral Cross Sectionsmentioning

confidence: 99%

“…where the last two factors are 3j-symbols [25], [26]. The matrix elements (49) are a generalization of Eqs.…”

Section: Frontal-versus-lateral Steric Asymmetrymentioning

confidence: 99%

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Collisions of paramagnetic molecules in magnetic fields: An analytic model based on Fraunhofer diffraction of matter waves

Lemeshko

Friedrich

2009

Phys. Rev. A

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We investigate the effects of a magnetic field on the dynamics of rotationally inelastic collisions of open-shell molecules ( 2 Σ, 3 Σ, and 2 Π) with closed-shell atoms. Our treatment makes use of the (2008)]. A magnetic field aligns the molecule in the space-fixed frame and thereby alters the effective shape of the diffraction target. This significantly affects the differential and integral scattering cross sections. We exemplify our treatment by evaluating the magnetic-field-dependent scattering characteristics of the He -CaH (X 2 Σ + ), He -O2 (X 3 Σ − ) and He -OH (X 2 ΠΩ) systems at thermal collision energies. Since the cross sections can be obtained for different orientations of the magnetic field with respect to the relative velocity vector, the model also offers predictions about the frontal-versus-lateral steric asymmetry of the collisions.The steric asymmetry is found to be almost negligible for the He -OH system, weak for the He -CaH collisions, and strong for the He -O2. While odd ∆M transitions dominate the He -OH (J = 3/2, f → J ′ , e/f ) integral cross sections in a magnetic field parallel to the relative velocity vector, even ∆M transitions prevail in the case of the He -CaH (X 2 Σ + ) and He -O2 (X 3 Σ − ) collision systems. For the latter system, the magnetic field opens inelastic channels that are closed in the absence of the field. These involve the transitions N = 1, J = 0 → N ′ , J ′ with J ′ = N ′ .

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Angular Momentum: Understanding Spatial Aspects in Chemistry and Physics

Cited by 520 publications

References 0 publications

Observation of the field-free orientation of a symmetric-top molecule by terahertz laser pulses at high temperature

Observation of the field-free orientation of a symmetric-top molecule by terahertz laser pulses at high temperature

A Stark Future for Quantum Control

Collisions of paramagnetic molecules in magnetic fields: An analytic model based on Fraunhofer diffraction of matter waves

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