TY - CONF AU - Till Rosenband AU - Wayne Itano AU - P. Schmidt AU - David Hume AU - Jeroen Koelemeij AU - James Bergquist AU - David Wineland C2 - 20^uth^ European Frequency and Time Forum (EFTF) , Braunschweig, GE DA - 2006-01-01 LA - en PB - 20^uth^ European Frequency and Time Forum (EFTF) , Braunschweig, GE PY - 2006 TI - Blackbody radiation shift of the 27Al+ 1S0 - 3P00 transition ER -