  Resonant spontaneous bremsstrahlung of an electron scattered by a nucleus in
the field of two moderately strong pulsed laser waves is studied theoretically.
The process is studied in detail within the interference kinematic region. This
region is determined by scattering of particles in the same plane at
predetermined angles, at that stimulated absorption and emission of photons of
external pulsed waves by an electron occurs in correlated manner. The
correspondence between the emission angle and the final-electron energy is
established in the kinematic region where the resonant parametric interference
effect is manifested. The resonant differential cross section of ENSB process
with simultaneous registration of both emission angles of the spontaneous
photon and the scattered electron, can exceed by 4-5 orders of magnitude the
corresponding cross section in the absence of an external field. It was shown
for nonrelativistic electrons that the resonant cross section of ENSB in the
field of two pulsed laser waves within the interference region in two order of
magnitude may exceed corresponding cross section in the Bunkin-Fedorov
kinematic region. The obtained results may be experimentally verified, for
example, by scientific facilities at sources of pulsed laser radiation (SLAC,
FAIR, XFEL, ELI).
