Complex quasivibrational energy formalism for intense‐field multiphoton and above‐threshold dissociation: Complex‐scaling Fourier‐grid Hamiltonian method
Issue Date
1991-07-09Author
Chu, Shih-I
Publisher
AIP Publishing
Type
Article
Article Version
Scholarly/refereed, publisher version
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Show full item recordAbstract
We present a new complex‐scaling Fourier‐grid Hamiltonian (CSFGH) method for accurate and efficient determination of laser‐induced (multichannel) molecular resonance states without the use of basis set expansions. The method requires neither the computation of potential matrix elements nor the imposition of boundary conditions, and the eigenvectors provide directly the values of the resonance wave functions at the space grid points. The procedure is particularly valuable for excited‐state problems where basis set expansion methods face the challenge. The simplicity and usefulness of the CSFGH method is demonstrated by a case study of the intensity‐dependent c o m p l e x quasivibrational energyeigenvalues (E R , −Γ/2) and eigenvectors associated with multiphoton and above‐threshold dissociation of H+ 2 ions in the presence of intense laser fields (I=1012–1014 W/cm2 ).
Description
This is the published version, also available here: http://dx.doi.org/10.1063/1.460125
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Citation
Chu, Shih-I. "Complex quasivibrational energy formalism for intense‐field multiphoton and above‐threshold dissociation: Complex‐scaling Fourier‐grid Hamiltonian method." The Journal of Chemical Physics 94, 7901 (1991); http://dx.doi.org/10.1063/1.460125.
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