Coaxing a British physicist to ditch uranium during uproar (8)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

A + JO [u] LE (the physicist James Prescott Joule, whose surname is used for the scientific unit of energy) without U (chemical symbol for uranium), inserted into CRY (as in “hue and cry” = uproar).