Fig. 2. Two mass spectra of helium nanodroplets doped with adamantane, C10H16 (molecular weight = 136) and H2O (molecular weight = 18). Conditions: THe = 9.5 K, pHe = 2 MPa, average droplet size 106, adamantane pressure: 0.5 mPa, Eel = 90 eV, Iel = 28 μA, upper panel: water pressure in the second pickup chamber: 0.1 mPa, lower panel: 1.15 mPa.
