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Title: Photo ion spectrometer

Abstract

A charged particle spectrometer for performing ultrasensitive quantitative analysis of selected atomic components removed from a sample. Significant improvements in performing energy and angular refocusing spectroscopy are accomplished by means of a two dimensional structure for generating predetermined electromagnetic field boundary conditions. Both resonance and non-resonance ionization of selected neutral atomic components allow accumulation of increased chemical information. A multiplexed operation between a SIMS mode and a neutral atomic component ionization mode with EARTOF analysis enables comparison of chemical information from secondary ions and neutral atomic components removed from the sample. An electronic system is described for switching high level signals, such as SIMS signals, directly to a transient recorder and through a charge amplifier to the transient recorder for a low level signal pulse counting mode, such as for a neutral atomic component ionization mode.

Inventors:
 [1];  [2];  [3]
  1. (Downers Grove, IL)
  2. (Westmont, IL)
  3. (Naperville, IL)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
867227
Patent Number(s):
US 4889987
Assignee:
ARCH Development Corporation (Chicago, IL) ANL
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
photo; spectrometer; charged; particle; performing; ultrasensitive; quantitative; analysis; selected; atomic; components; removed; sample; significant; improvements; energy; angular; refocusing; spectroscopy; accomplished; means; dimensional; structure; generating; predetermined; electromagnetic; field; boundary; conditions; resonance; non-resonance; ionization; neutral; allow; accumulation; increased; chemical; information; multiplexed; operation; sims; mode; component; eartof; enables; comparison; secondary; electronic; described; switching; level; signals; directly; transient; recorder; charge; amplifier; signal; pulse; counting; charge amplifier; resonance ionization; selected atomic; level signal; quantitative analysis; electromagnetic field; magnetic field; charged particle; atomic components; pulse counting; atomic component; chemical information; significant improvement; signal pulse; field boundary; boundary conditions; ionization mode; neutral atom; dimensional structure; generating predetermined; selected atom; /250/

Citation Formats

Gruen, Dieter M., Young, Charles E., and Pellin, Michael J. Photo ion spectrometer. United States: N. p., 1989. Web.
Gruen, Dieter M., Young, Charles E., & Pellin, Michael J. Photo ion spectrometer. United States.
Gruen, Dieter M., Young, Charles E., and Pellin, Michael J. Sun . "Photo ion spectrometer". United States. https://www.osti.gov/servlets/purl/867227.
@article{osti_867227,
title = {Photo ion spectrometer},
author = {Gruen, Dieter M. and Young, Charles E. and Pellin, Michael J.},
abstractNote = {A charged particle spectrometer for performing ultrasensitive quantitative analysis of selected atomic components removed from a sample. Significant improvements in performing energy and angular refocusing spectroscopy are accomplished by means of a two dimensional structure for generating predetermined electromagnetic field boundary conditions. Both resonance and non-resonance ionization of selected neutral atomic components allow accumulation of increased chemical information. A multiplexed operation between a SIMS mode and a neutral atomic component ionization mode with EARTOF analysis enables comparison of chemical information from secondary ions and neutral atomic components removed from the sample. An electronic system is described for switching high level signals, such as SIMS signals, directly to a transient recorder and through a charge amplifier to the transient recorder for a low level signal pulse counting mode, such as for a neutral atomic component ionization mode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1989},
month = {Sun Jan 01 00:00:00 EST 1989}
}

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