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ON THE ROLE OF POTENTIAL FEATURES IN FINE-STRUCTURE TRANSITIONS WITH APPLICATION TO H++F(P-2(1/2))-]H++F(P-2(3/2))

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Title ON THE ROLE OF POTENTIAL FEATURES IN FINE-STRUCTURE TRANSITIONS WITH APPLICATION TO H++F(P-2(1/2))-]H++F(P-2(3/2))
 
Creator PADMAVATHI, DA
MISHRA, MK
RABITZ, H
 
Subject functional sensitivity analysis
structure-changing transitions
quantum-mechanical treatment
surface scattering data
state atom collisions
electronic states
alkali atoms
gas
inversion
energy
 
Description The first order functional sensitivity densities delta In sigma(1/2-->3/2)(E)/delta ln W-\A\(R) are employed to assess the role of structure in potential energy curves W-0(R) and W-0(R) involved in the fine-structure transition H+ + F(P-2(1/2))-->H+ + F(P-2(3/2)). The results reveal that the fine-structure transition cross-section draws on the W-0((2) Sigma) and W-1((2) Pi) potentials in a highly correlated fashion and a measurement of sigma 1/2-->3/2(E) for H+ + F will primarily allow information to be extracted only on the potential function difference W-0(R) - W-1(R) for moderate to large internuclear distances (R greater than or similar to 3 a(0)). While there is a marginal preference for the pi alignment in the region where splitting between the (2) Pi and (2) Sigma curves is equal to the fine-structure transition energy, the oscillatory nature of the sensitivity densities with respect to R indicates that the alignment effects may disappear upon averaging over many impact parameters. The results from both functional sensitivity and adiabatic analysis isolate the region of potential energy curves centered at R approximate to 7.8 a(0) where the potential function difference W-0(R) - W-1(R) is equal to the fine-structure splitting, to be of maximum significance to the collisional fine-structure transition in this system.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-26T00:06:45Z
2011-12-26T12:51:01Z
2011-12-27T05:37:18Z
2011-07-26T00:06:45Z
2011-12-26T12:51:01Z
2011-12-27T05:37:18Z
1994
 
Type Article
 
Identifier CHEMICAL PHYSICS, 179(3), 469-478
0301-0104
http://dx.doi.org/10.1016/0301-0104(94)87023-3
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6825
http://hdl.handle.net/10054/6825
 
Language en