  We study the dynamics of a particle moving in one-dimensional Lorentz
lattice-gas where particle performs mainly three different kinds of motion {\it
viz} ballistic motion, diffusion and confinement. There are two different types
of scatterers, {\it viz} reflector and transmitters, randomly placed in the
lattice. Reflectors are such that they reverse the particle's velocity
direction and transmitters let it pass through. Scatterers also change their
character with flipping probability $1-\alpha$, once the particle interacts
with a scatterer. Hence the system is defined by two sets of parameters, $r$,
which is the initial density of reflector/transmitter and $\alpha$. For
$\alpha=0$ and $\alpha=1$ dynamics of the particle is purely deterministic else
it is probabilistic. In the pure deterministic case dynamics of the particle is
either propagation in one direction or confined between two near-by reflectors
present. For the probabilistic case $\alpha \ne 1$ and $\ne 0$, although the
dynamics of particle shows anomalous diffusion where dynamics is faster, slower
and comparable to normal diffusion on the variation of system parameters
$(\alpha, r)$, but the asymptotic behaviour of the particle is normal
diffusion. We plot the phase diagram for the asymptotic behaviour, in the plane
of $\alpha$ and $r$.
