Physical Review D, 81(5). American Physical Society Thomsen, H D, Esberg, J, Andersen, K, Lund, M D, Knudsen, H, Uggerhøj, U I, Sona, P, Mangiarotti, A, Ketel, T J, Dizdar, A, Ballestrero, S & Connell, S H 2010, ' Distorted Coulomb field of the scattered electron ', Physical Review D, vol. 81, no. 5, pp. 052003 . https://doi.org/10.1103/PhysRevD.81.052003 Thomsen, H D, Esberg, J, Andersen, K K, Lund, M D, Knudsen, H, Uggerhøj, U I, Sona, P, Mangiarotti, A, Ketel, T J, Ditzdar, A, Ballestrero, S & Connell, S H 2010, ' Distorted Coulomb field of the scattered electron ', Physical Review D, vol. 81, no. 5, pp. 052003 . https://doi.org/10.1103/PhysRevD.81.052003