  Weak interactions within a nucleus generate a nuclear spin dependent parity
violating electromagnetic moment; the anapole moment. In heavy nuclei, the
anapole moment is the dominant contribution to spin-dependent atomic parity
violation. We analyze a method to measure the nuclear anapole moment through
the electric dipole transition it induces between hyperfine states of the
ground level. The method requires tight confinement of the atoms to position
them at the anti-node of a standing wave driving the anapole-induced E1
transiton. We explore the necessary limits in the number of atoms, excitation
fields, trap type, interrogation method, and systematic tests necessary for
such measurements in francium, the heaviest alkali.
