Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Naseem Rahman"'
Autor:
Naseem Rahman
Publikováno v:
HICSS
Publikováno v:
Chemical Physics Letters. 381:556-564
A statistical analysis of experimental vibro-roto-torsional energy levels of CH 3 OH, CD 3 OH, CH 3 OD, 13 CH 3 OH and 13 CD 3 OH molecules is performed, calculating the nearest neighbor spacing level distribution and the Dyson–Metha Δ 3 ( L ). Th
Publikováno v:
Molecular Physics. 99:443-453
Adiabatic energy levels for two prototypical reactions, F + H2 → HF + H and He + H+ 2 → HeH+ + H, are analysed by means of statistical tests. These levels result from quantum mechanical calculations of dynamics based on the hyperspherical approac
Publikováno v:
Chemical Physics Letters. 313:639-646
Statistical tests (NNLSD, Δ 3 of Dyson and Mehta, correlation coefficients) are applied to the adiabatic energy level distribution of the prototypical reaction F+H 2 → HF+H, depending parametrically on the three-body total inertia measured by the
Autor:
Naseem Rahman
Publikováno v:
Chemical Physics Letters. 270:189-192
A previously considered two-level system interacting with an external electromagnetic wave is particularised to a degenerate system and utilized as a model for the process of high-order harmonic generation (HOHG). It is shown that this model can be r
Publikováno v:
Chemical Physics Letters. 262:747-750
A preliminarystudy on above threshold dissociation is presented. The specific example is based on the Na 2 + molecular ion, for which accurate potential energy curves and transition dipoles are available. The first step of the process is examined, wi
Publikováno v:
The Journal of Chemical Physics. 103:6637-6644
Two general algorithms are presented to determine regular orbits in the presence of irregular trajectories in a phase space of n degrees of freedom. The first algorithm searches for regular orbits with the energy as a free‐floating parameter. The s
Publikováno v:
Chemical Physics Letters. 236:543-546
Vibrational spectra of polyatomic molecules depend on the atomic masses. Using the CS 2 molecule as an example, a statistical analysis is performed for the stretching vibrational energy levels as a function of the isotopic masses. It is found that bo
Publikováno v:
The Journal of Chemical Physics. 102:226-236
We present a new method for classical control theory of Hamiltonian systems. This approach is based on a special treatment of the adjoint or Lagrange multiplier equations of motion. The latter function is only asked to preserve the mean of the ensemb
Autor:
Fabio Pichierri, Naseem Rahman
Publikováno v:
Chemical Physics Letters. 223:275-278
Energy level statistics are presented for the vibrational levels of polyatomic molecules utilizing a local mode Hamiltonian made of four coupled Morse oscillators. The nearest-neighbour level spacing distribution shows a progressive transition toward