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Title: Method and apparatus for confinement of ions in the presence of a neutral gas

Abstract

The present invention is an apparatus and method for combining ions with a neutral gas and flowing the mixture with a radial flow component through a magnetic field so that the weakly ionized gas is confined by the neutral gas. When the weakly ionized gas is present in sufficient density, a weakly ionized non-neutral plasma is formed that may be trapped in accordance with the present invention. Applications for a weakly ionized non-neutral plasma exploit the trap's ability to store and manipulate ionic species in the presence of neutral gas. The trap may be connected to a mass spectrometer thereby permitting species identification after a fixed period of time. Delicate and/or heavy particles such as clusters may be held and studied in a "gentle" environment. In addition, the trap can provide a relatively intense, low-energy source of a particular ion species for surface implantation or molecular chemistry. Finally, a long trap may permit spectroscopy of unprecedented accuracy to be performed on ionic species.

Inventors:
 [1];  [1]
  1. Richland, WA
Publication Date:
Research Org.:
Battelle Memorial Institute, Columbus, OH (United States)
OSTI Identifier:
872420
Patent Number(s):
US 5931986
Assignee:
Battelle Memorial Institute (Richland, WA)
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; confinement; presence; neutral; gas; combining; flowing; mixture; radial; flow; component; magnetic; field; weakly; ionized; confined; sufficient; density; non-neutral; plasma; formed; trapped; accordance; applications; exploit; trap; ability; store; manipulate; ionic; species; connected; mass; spectrometer; permitting; identification; fixed; period; time; delicate; heavy; particles; clusters; held; studied; gentle; environment; addition; provide; relatively; intense; low-energy; source; particular; surface; implantation; molecular; chemistry; finally; permit; spectroscopy; unprecedented; accuracy; performed; neutral gas; ionized gas; sufficient density; mass spectrometer; magnetic field; energy source; radial flow; ionic species; flow component; /95/96/

Citation Formats

Peurrung, Anthony J, and Barlow, Stephan E. Method and apparatus for confinement of ions in the presence of a neutral gas. United States: N. p., 1999. Web.
Peurrung, Anthony J, & Barlow, Stephan E. Method and apparatus for confinement of ions in the presence of a neutral gas. United States.
Peurrung, Anthony J, and Barlow, Stephan E. Fri . "Method and apparatus for confinement of ions in the presence of a neutral gas". United States. https://www.osti.gov/servlets/purl/872420.
@article{osti_872420,
title = {Method and apparatus for confinement of ions in the presence of a neutral gas},
author = {Peurrung, Anthony J and Barlow, Stephan E},
abstractNote = {The present invention is an apparatus and method for combining ions with a neutral gas and flowing the mixture with a radial flow component through a magnetic field so that the weakly ionized gas is confined by the neutral gas. When the weakly ionized gas is present in sufficient density, a weakly ionized non-neutral plasma is formed that may be trapped in accordance with the present invention. Applications for a weakly ionized non-neutral plasma exploit the trap's ability to store and manipulate ionic species in the presence of neutral gas. The trap may be connected to a mass spectrometer thereby permitting species identification after a fixed period of time. Delicate and/or heavy particles such as clusters may be held and studied in a "gentle" environment. In addition, the trap can provide a relatively intense, low-energy source of a particular ion species for surface implantation or molecular chemistry. Finally, a long trap may permit spectroscopy of unprecedented accuracy to be performed on ionic species.},
doi = {},
url = {https://www.osti.gov/biblio/872420}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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Works referenced in this record:

The non-neutral plasma: an introduction to physics with relevance to cyclotron resonance mass spectrometry
journal, December 1996


Transport to thermal equilibrium of a pure electron plasma
journal, January 1979