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Title: Method and apparatus for efficient photodetachment and purification of negative ion beams

Abstract

Methods and apparatus are described for efficient photodetachment and purification of negative ion beams. A method of purifying an ion beam includes: inputting the ion beam into a gas-filled multipole ion guide, the ion beam including a plurality of ions; increasing a laser-ion interaction time by collisional cooling the plurality of ions using the gas-filled multipole ion guide, the plurality of ions including at least one contaminant; and suppressing the at least one contaminant by selectively removing the at least one contaminant from the ion beam by electron photodetaching at least a portion of the at least one contaminant using a laser beam.

Inventors:
 [1];  [2];  [2]
  1. Oak Ridge, TN
  2. Knoxville, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
983889
Patent Number(s):
7,335,878
Application Number:
11/251,710
Assignee:
UT-Battelle LLC (Oak Ridge, TN)
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Beene, James R, Liu, Yuan, and Havener, Charles C. Method and apparatus for efficient photodetachment and purification of negative ion beams. United States: N. p., 2008. Web.
Beene, James R, Liu, Yuan, & Havener, Charles C. Method and apparatus for efficient photodetachment and purification of negative ion beams. United States.
Beene, James R, Liu, Yuan, and Havener, Charles C. Tue . "Method and apparatus for efficient photodetachment and purification of negative ion beams". United States. https://www.osti.gov/servlets/purl/983889.
@article{osti_983889,
title = {Method and apparatus for efficient photodetachment and purification of negative ion beams},
author = {Beene, James R and Liu, Yuan and Havener, Charles C},
abstractNote = {Methods and apparatus are described for efficient photodetachment and purification of negative ion beams. A method of purifying an ion beam includes: inputting the ion beam into a gas-filled multipole ion guide, the ion beam including a plurality of ions; increasing a laser-ion interaction time by collisional cooling the plurality of ions using the gas-filled multipole ion guide, the plurality of ions including at least one contaminant; and suppressing the at least one contaminant by selectively removing the at least one contaminant from the ion beam by electron photodetaching at least a portion of the at least one contaminant using a laser beam.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {2}
}

Patent:

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Works referenced in this record:

Selective suppression of negative ions by lasers
journal, September 1989

  • Berkovits, D.; Boaretto, E.; Hollos, G.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 281, Issue 3
  • DOI: 10.1016/0168-9002(89)91507-6

Collisional cooling of negative-ion beams
journal, January 2002

  • Liu, Y.; Liang, J. F.; Alton, G. D.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 187, Issue 1
  • DOI: 10.1016/S0168-583X(01)00844-8

Study of laser interaction with negative ions
journal, December 1990

  • Berkovits, D.; Boaretto, E.; Hollos, G.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 52, Issue 3-4
  • DOI: 10.1016/0168-583X(90)90441-V