  The elementary excitations of a fractional quantum Hall liquid are
quasiparticles or quasiholes which are neither bosons nor fermions, but
so-called anyons. Here we study impurity particles immersed in a quantum Hall
liquid which bind to the quasiholes via repulsive interactions with the liquid.
We show that the angular momentum of an impurity is given by the multiple of a
fractional "quantum" of angular momentum, and can directly be observed from the
impurity density. In a system with several impurities bound to quasiholes,
their total angular momentum interpolates between the values for free fermions
and for free bosons. This interpolation is characterized by the fractional
statistical parameter of the anyons which is typically defined via their
braiding behavior.
