U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Physics

Electron physics

News and Updates

anyon teaser image

Anyone for Anyons?

Researchers have demonstrated that a strange type of quantum particle called the anyon, believed to exist in only two dimensions, can also be created in one

Projects and Programs

Quantum Physics Theory

Ongoing
The scope of the work ranges from calculations of QED effects in atoms to detailed studies of photon wave functions.

CODATA values of the fundamental physical constants

Ongoing
CODATA recommended values of the constants Database of references for data on the constants Publications: Reviews of Modern Physics ( 1998) ( 2002) ( 2006) ( 2010) ( 2014) Journal of Physical and Chemical Reference Data ( 1998) ( 2006) ( 2010) Resource Letter FC-1: The physics of fundamental
EUV Relectivity

Metrology for extreme ultraviolet lithography

Ongoing
Patterning with light 13 nm brings a host a new challenges Light at 13 nm is well within the vacuum ultraviolet, where radiation is strongly absorbed by all materials. This requires that the technology take place in vacuum and rely on mirrors rather than lenses. Moreover generating sufficient
EUV optics degradation in space

Degradation of extreme-ultraviolet optics

Ongoing
The primary degradation process in EUVL tools and satellite instruments begins by the adsorption of water or carbonaceous molecules from the vacuum environment onto the optic surface. The optic is damaged if the molecule undergoes photon-stimulated decomposition before it can (reversibly) thermally

Publications

Statistical study and parallelization of multiplexed single-electron sources

Author(s)
S Norimoto, P See, N Schoinas, I Rungger, Tommy Boykin, Michael Stewart, J. P. Griffiths, C. Chen, D. A. Ritchie, M. Kataoka
Increasing electric current from a single-electron source is a main challenge in an effort to establish the standard of the ampere defined by the fixed value of

Software

HolograFREE

An electron hologram is a fringe modulated image containing the amplitude and phase information of an electron transparent object. The HolograFREE routines

Tools and Instruments

Beamline 7

Beamline 7: EUV reflectometry

The NIST/DARPA EUV Reflectometry facility began in the late 1980's to make measurements of the reflectivity of EUV multilayer optics for lithography. Since then