Bremsstrahlung emission from interactions between two dressed dust grains in dusty plasmas

Bremsstrahlung emission from interactions between two dressed grains charge d with the same sign in dusty plasmas are investigated using the classical trajectory method. An interaction potential model taking into account the c ross terms of shield effects is applied to describe the interaction potenti al between dressed dust grains in dusty plasmas. The classical straight-lin e trajectory method is applied to represent the bremsstrahlung cross sectio n as a function of the scaled impact parameter, collision energy, and photo n energy. The result shows that the potential well in the interaction poten tial plays an important role in the bremsstrahlung spectrum. It is also fou nd that there exists a nonradiation position in the bremsstrahlung radiatio n due to the balance between the repulsive and attractive interactions. (C) 2001 American Institute of Physics.