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(Color online) Experimental FID and magic echoes measured in calcium uoride. To overlay the data, we have time-shifted and normalized each echo decay. Even though the initial decays vary significantly, they all approach the same long-time decays. In this figure the points represented are: the FID (▪i/black) and magic echoes at different τ, τ =50 µs (⋆/red), τ = 100 µs (▴/blue), and τ=130 µs (▾/green).
