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ISOLATION OF THE REGIONS OF POTENTIAL SIGNIFICANCE IN FINE-STRUCTURE TRANSITIONS USING ADIABATIC AND FUNCTIONAL SENSITIVITY ANALYSES - A COMPARATIVE INVESTIGATION WITH APPLICATIONS TO NA(P-2(1/2))+HE-]NA(P-2(3/2))+HE AND NA(P-2(1/2))+AR-]NA(P-2(3/2))+AR

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Title ISOLATION OF THE REGIONS OF POTENTIAL SIGNIFICANCE IN FINE-STRUCTURE TRANSITIONS USING ADIABATIC AND FUNCTIONAL SENSITIVITY ANALYSES - A COMPARATIVE INVESTIGATION WITH APPLICATIONS TO NA(P-2(1/2))+HE-]NA(P-2(3/2))+HE AND NA(P-2(1/2))+AR-]NA(P-2(3/2))+AR
 
Creator PADMAVATHI, DA
MISHRA, MK
RABITZ, H
 
Subject structure-changing transitions
quantum-mechanical treatment
surface scattering data
state atom collisions
nonadiabatic collisions
electronic states
cross-sections
alkali atoms
gas
inversion
 
Description The first-order functional sensitivity densities deltalnsigma1/2-->3/2(E)/deltalnW\LAMBDA\(R) are employed to assess the role of structure in the potential-energy curves W0(2SIGMA) and W1(2PI) mediating the fine-structure transition Na(P-1/2(2)) + He-->Na(P-3/2(2)) + He and Na(P-1/2(2)) + Ar-->Na(P-3/2(2)) + Ar. The sensitivity density profiles deltalnsigma1/2-->3/2(E)/deltalnW\LAMBDA\(R) for the two systems reveal that regions of significance differ widely for the 2SIGMA and 2PI curves. The results suggest that prevalent mechanistic explanations from adiabatic analyses have limitations in terms of the ultimate significance of the identified kinematic coupling over well demarcated radial and angular coupling regions. The functional sensitivity analysis is shown to permit a full deconvolution of the collision cross section's dependence on the features in the individual 2SIGMA and 2PI curves as opposed to the adiabatic analysis where only the features in [W0(R)-W1(R)] are deemed critical to the collisional outcome.
 
Publisher AMERICAN PHYSICAL SOC
 
Date 2011-07-17T15:22:36Z
2011-12-26T12:50:22Z
2011-12-27T05:49:02Z
2011-07-17T15:22:36Z
2011-12-26T12:50:22Z
2011-12-27T05:49:02Z
1994
 
Type Article
 
Identifier PHYSICAL REVIEW A, 50(4), 3142-3150
1050-2947
http://dx.doi.org/10.1103/PhysRevA.50.3142
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4768
http://hdl.handle.net/10054/4768
 
Language en