Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hole-Burning Diffusion Measurements in High Magnetic Field Gradients   We describe methods for the measurement of translational diffusion in very
large static magnetic field gradients by NMR. The techniques use a
"hole-burning" sequence that, with the use of fringe field gradients of 42 T/m,
can image diffusion along one dimension on a submicron scale. Two varieties of
this method are demonstrated, including a particularly efficient mode called
the "hole-comb," in which multiple diffusion times comprising an entire
diffusive evolution can be measured within the span of a single detected slice.
The advantages and disadvantages of these methods are discussed, as well as
their potential for addressing non-Fickian diffusion, diffusion in restricted
media, and spatially inhomogeneous diffusion.

31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph