Local-field filters

The line-narrowing effect can be explained in simple terms by the action of an effective lock field of strength Bieff which changes the transverse relaxation to a relaxation effective in the rotating frame. This relaxation time is referred to as T2t. or effective relaxation time. Because Tie is longer than Ti, the signal is preserved for a longer time. 

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Fig. 7.2.19 Pulse sequences for local-field filters and schematic filter transfer functions.

FIGURE 9.7 Schematic of an in-line interferometer. The anti-Stokes local oscillator field is collinearly overlapped with the pnmp and Stokes beams on a dichroic mirror (DM). All fields are focused by a microscope objective (MO) into the sample (S), and the total signal at the anti-Stokes frequency is detected throngh a spectral bandpass filter (F) at the photodetector. 

R. W. Field Prof. Rabitz, I like the idea of sending out a scout to map a local region of the potential-energy surface. But I get the impression that the inversion scheme you are proposing would make no use of what is known from frequency-domain spectroscopy or even from nonstandard dynamical models based on multiresonance effective Hamiltonian models. Your inversion scheme may be mathematically rigorous, unbiased, and carefully filtered against a too detailed model of the local potential, but I think it is naive to think that a play-and-leam scheme could assemble a sufficient quantity of information to usefully control the dynamics of even a small polyatomic molecule. 

The disposal of pig manure poses problems comparable to those of the vegetable waste water. Pre-filtering is even more important here because of the very coarse nature of some of the manure components. As manure from pigs has solids contents as low as 5 to 11%, the main goal is the reduction of the amount to be transported from areas with a manure-surplus to regions with a fertiliser shortage. Very important too, but in the economical sense, is the possibility for disposal of the concentrate of the separation process. Local factors like fertilising limits and the nearby availability of fields that can be fertilised are decisive. 

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