DC Stark effect on cold Rydberg atom nD + nD pair collision - Cabral, J. S.; Gonçalves, L. F.; Booth, D. W.; Schwettmann, A.; Tallant, J. E.; Shaffer, J.; Marcassa, Luís Gustavo (International Conference on Photonic, Electronic and Atomic Collisions - ICPEAC, 2009)