Generation of charged particle vortex waves

A device (100) for imparting an orbital angular momentum to a charged particle wave propagating along an axis (105) in a charged particle beam generating apparatus, the device comprising a first conductive element (110) comprising a plurality of angularly spaced electrical conductors (112) arranged around the axis (105), a second conductive element (120), in which said first conductive element (110) and said second conductive element (120) are spaced apart along the direction of said axis (105), and in which said first conductive element (110) and said second conductive element (120) are adapted for transmitting a charged particle wave propagating along said axis (105), and a connecting means (130) for supplying an electrical potential difference over said first conductive element (110) and said second conductive element (120). The connecting means (130) is adapted for supplying an electrical potential to said plurality of angularly spaced electrical conductors (112) for inducing an angular gradient of the phase of the charged particle wave when transmitted along said axis (105), in which the projection along the axis (105) of the electrical potential varies as function of an angular position with respect to the axis (105).

Octrooi-publicatienummer: EP2795655

Jaar aanvraag: 2012

Jaar toekenning: 2015

Jaar van publicatie: 2015

Status: Toegewezen

Technologiedomeinen: Elektrische machines, apparaten, energie, Meting

Gevalideerd voor IOF-sleutel: Ja

Toegewezen aan: Associatie Universiteit & Hogescholen Antwerpen