Patent ID: 11915901
Assignee: ULVAC-PHI, INCORPORATED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A surface imaging method based on detection of secondary electrons or secondary ions using the surface imaging apparatus of claim 8, the method comprising:
using the spatially scanned and pulsed primary excitation source resulting in secondary electrons or secondary ions;
detecting the secondary electrons or secondary ions;
providing a modulated signal of the detected secondary electrons or secondary ions for imaging of a sample; and
using the dual polarity flood beams to effect neutralization of surface charge and surface potential variation, wherein the dual polarity flood beams are interleaved with the pulsed primary excitation source, and
wherein the dual polarity flood beams comprise a pulsed electron beam and the pulsed positively charged ion beam.