RESUMO
The collisional enhancing of the magnetic dipole transition I(5(2)P((1/2))-5(2)P(3/2)) at 1.3152 microm by Xe is shown to proceed over an exciplex channel: I(5(2)P((1/2))) + Xe ? XeI((2)pi((1/2))) ? I(5(2)P(3/2)) + Xe + hnu(1.3 microm). The pseudo-first-order rate coefficient for this process is (1.6+/-0.2) x 10(-18) molecule(-1) cm(3) sec(-1)). The termolecular rate coefficient for XeI((2)pi((1/2))) excimer production is (2 +/- 1) x 10(-35) molecule(-2) cm(6) sec(-1). The radiative lifetime of the XeI excimer state is of the order of 100 nsec. Similar effects are briefly reported for C(2)F(6), SF(6), Kr, Ar, and i-C(3)F(7)I.
RESUMO
A new method is described for the first few modes calculations in a interferometer that has several advantages over the Allmat subroutine, the Prony method, and the Fox and Li method. In the illustrative results shown for some cases it can be seen that the eigenvalue translation method is typically 100-fold times faster than the usual Fox and Li method and ten times faster than Allmat.