Bremsstrahlung Regge‐Type Representation

Uskov, D.B.; Pratt, R.H.

doi:10.1063/1.1619676

Bremsstrahlung Regge‐Type Representation

Oct 13, 2003

Part of Application of accelerators in research and industry. Proceedings, 17th International Conference, CAARI 2002, Denton, USA, November 12-16, 2002, 106

Published in:

AIP Conf.Proc. 680 (2003) 1, 106

Contribution to:

17th International Conference on the Application of Accelerators in Research and Industry (CAARI 2002), 106

Published: Oct 13, 2003

DOI:

10.1063/1.1619676

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Abstract: (AIP)

We report a new approach to describe the features of the bremsstrahlung process in electron‐atom interaction. The method employs a modification of the Watson transform. We rewrite the partial wave sum in the form of a contour integral in the complex l‐plane and we identify contributions due to particular singularities of the elastic scattering S‐matrix considered as a function of complex angular momenta. The behavior of the trajectories of these poles, known as Regge poles, as a function of electron energy, exhibits common features for a broad class of potentials, making the representation useful for description of the general features of the bremsstrahlung cross section. We demonstrate that the extent of classical‐quantum correspondence for free‐free radiative transitions can be assessed using this representation.

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