A chromatographer, fed up with waiting 36 min to accomplish a separation requiring 8000 plates, packs a new column to reduce separation time. He boldly slashes particle diameter by a factor of three. He adjusts the flow velocity to work at the same reduced velocity as before (the h versus v curves of the two columns are the same) and chooses a column length to get the same number of plates. Comparing the new column to the old, by what