  Detection of a material particle is accompanied by emission of
bremsstrahlung. Thus the dynamics of the energy loss of the particle is
determined by radiation reaction force. The description of radiation reaction
is a difficult problem still being subject of ongoing debates. There are
problems of runaway solutions, preacceleration already in classical description
of radiation reaction. Additional complications in quantum mechanical
description arise because of the infinite source field energy term in
hamiltonian for a point charge. There is still no general consensus on an
appropriate quantum mechanical description. Neither the achievements of the
radiation theory on the subject nor the problems associated with it are
sufficiently taken into account in context with measurement problem. Radiation
reaction doesn't effect free particle wave packets, but it favors stationary
states of the `wave function of the measured particle" in presence of a
potential gradient. We suggest therefore that radiation reaction may play a
significant role in the dynamics of the wave function collapse. keywords: wave
function collapse,interpretation,randomness, Jaynes Cummings dynamics,
spontaneous emission, source field effects, radiation reaction, quantum
measurement,decoherence
