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The
-approach to approximate inverse scattering at fixed energy in three dimensions
We develop the
-approach to inverse scattering at fixed energy in dimensions d
3 of Beals and Coifman (1984) and Henkin and Novikov (1987). As a result, we propose a stable method for nonlinear approximate finding a potential
from its scattering amplitude f at fixed energy E > 0 in dimension d = 3. In particular, in three dimensions, we stably reconstruct n-times smooth potential v with sufficient decay at infinity, n > 3, from its scattering amplitude f at fixed energy E up to
in the uniform norm as E
+
for any fixed arbitrary small
> 0 (i.e., with almost the same decay rate of the error for E
+
as in the linearized case near zero potential).