Positron production by x rays emitted by betatron motion in a plasma wiggler.

Abstract

Positrons in the energy range of 3-30 MeV, produced by x rays emitted by betatron motion in a plasma wiggler of 28.5 GeV electrons from the SLAC accelerator, have been measured. The extremely high-strength plasma wiggler is an ion column induced by the electron beam as it propagates through and ionizes dense lithium vapor. X rays in the range of 1-50 MeV in… (More)

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@article{Johnson2006PositronPB, title={Positron production by x rays emitted by betatron motion in a plasma wiggler.}, author={D. K. Johnson and David Auerbach and Israel Blumenfeld and C. D. Barnes and C. E. Clayton and F. J. Decker and S. Deng and P. G. Emma and M. J. Hogan and C. Huang and Rasmus Ischebeck and Ronald Iverson and Charuta Narayan Joshi and T. C. Katsouleas and Nigel I. Kirby and Patrick Krejcik and Wei Lu and K. A. Marsh and W. B. Mori and P. Muggli and C. L. O'Connell and Emre Oz and R. H. Siemann and Daniel M. Walz and Ming Zhou}, journal={Physical review letters}, year={2006}, volume={97 17}, pages={175003} }