TY - JOUR AU - Lim, M AU - Killian, T AU - Kulin, S AU - Dumke, R AU - Bergeson, S AU - Rolston, S C2 - Physical Review Letters DA - 2001-04-01 LA - en M1 - 86 PB - Physical Review Letters PY - 2001 TI - Formation of Rydberg Atoms in an Expanding Ultracold Neutral Plasma ER -