Patent · US Expired

Source of spin polarized electrons

US3968376A · kind A · utility

11Cited by

1References

9Claims

0Family size

Inventors

Daniel T. Pierce · Gaithersburg, US
Felix Meier · Schweinhub, DE
Hans-Christoph Siegmann · Zürich, CH

Key dates

Filing date	Jun 3, 1975
Grant date	Jul 6, 1976
Priority date	—
Expiry date	Jun 3, 1995

Classification

Technology area (CPC H)Electricity
CPC primaryH01J1/34
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention concerns a method of producing intense beams of polarized free electrons in which a semiconductor with a spin orbit split valence band and negative electron affinity is used as a photocathode and irradiated with circularly polarized light.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.