Figure 2
The experimental setup for imaging rotating superfluid helium nanodroplets. (A) Rotating droplets are formed by expanding helium fluid into vacuum. (B) The nanodroplets become superfluid after evaporative cooling. (C) Droplets are optionally doped with Xe atoms in a gas cell. (D) and (E) X-ray diffraction images from single nanodroplets are recorded with the pnCCD. Figure reprinted with permission from Gomez et al. (2014). |