skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Ultra-bright pulsed electron beam with low longitudinal emittance

Abstract

A high-brightness pulsed electron source, which has the potential for many useful applications in electron microscopy, inverse photo-emission, low energy electron scattering experiments, and electron holography has been described. The source makes use of Cs atoms in an atomic beam. The source is cycled beginning with a laser pulse that excites a single Cs atom on average to a band of high-lying Rydberg nP states. The resulting valence electron Rydberg wave packet evolves in a nearly classical Kepler orbit. When the electron reaches apogee, an electric field pulse is applied that ionizes the atom and accelerates the electron away from its parent ion. The collection of electron wave packets thus generated in a series of cycles can occupy a phase volume near the quantum limit and it can possess very high brightness. Each wave packet can exhibit a considerable degree of coherence.

Inventors:
 [1]
  1. (Oakland, CA)
Issue Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1013002
Patent Number(s):
7,755,069
Application Number:
11/749,747
Assignee:
The Regents of the University of California (Oakland, CA) LBNL
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Zolotorev, Max. Ultra-bright pulsed electron beam with low longitudinal emittance. United States: N. p., 2010. Web.
Zolotorev, Max. Ultra-bright pulsed electron beam with low longitudinal emittance. United States.
Zolotorev, Max. Tue . "Ultra-bright pulsed electron beam with low longitudinal emittance". United States. https://www.osti.gov/servlets/purl/1013002.
@article{osti_1013002,
title = {Ultra-bright pulsed electron beam with low longitudinal emittance},
author = {Zolotorev, Max},
abstractNote = {A high-brightness pulsed electron source, which has the potential for many useful applications in electron microscopy, inverse photo-emission, low energy electron scattering experiments, and electron holography has been described. The source makes use of Cs atoms in an atomic beam. The source is cycled beginning with a laser pulse that excites a single Cs atom on average to a band of high-lying Rydberg nP states. The resulting valence electron Rydberg wave packet evolves in a nearly classical Kepler orbit. When the electron reaches apogee, an electric field pulse is applied that ionizes the atom and accelerates the electron away from its parent ion. The collection of electron wave packets thus generated in a series of cycles can occupy a phase volume near the quantum limit and it can possess very high brightness. Each wave packet can exhibit a considerable degree of coherence.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {7}
}

Patent:

Save / Share: