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Ioannis Orfanopoulos

Emmanuel Raptakis

Dimitris Papanastasiou

Alexander Lekkas

Diamantis Kounadis

Ioannis K Nikolos

Techniques are provided for generating charged droplets of liquid entrained within a gas flow within a vacuum chamber and for controlling the gas flow. The gas flow with the entrained charged droplets of liquid is jetted into the vacuum chamber along a predetermined jetting axis. The gas jet is received within a gas conduit housed within the vacuum chamber and having a conduit bore coaxial with the predetermined jetting axis. The received gas jet is caused to be restrained to form a laminar gas flow entrained with charged droplets inside of the gas conduit for guiding the entrained charged droplets therealong.

Charged droplets generating apparatus including a gas conduit for laminarization of gas flows

A guide apparatus includes a vacuum compartment provided at a background pressure and having a gas inlet opening arranged for jetting a gas in the form of a free jet stream containing entrained ions into a vacuum chamber along a predetermined jetting axis. At least one duct housed within the vacuum chamber has a guide bore positioned coaxially with the jetting axis for receiving the free jet stream such that a supersonic free jet is formed in the duct with a jet pressure ratio P/Prestrained to a value that does not exceed (A/a)to form a subsonic laminar gas flow inside of the duct for guiding the entrained ions, where Pis the pressure at an exit end of the gas inlet opening, Pis the background pressure, A is the cross sectional area of the bore, and a is the cross sectional area of the gas inlet opening.

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Athens, Greece

Ioannis Orfanopoulos