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Title: Computerized method and system for designing an aerodynamic focusing lens stack

Abstract

A computerized method and system for designing an aerodynamic focusing lens stack, using input from a designer related to, for example, particle size range to be considered, characteristics of the gas to be flowed through the system, the upstream temperature and pressure at the top of a first focusing lens, the flow rate through the aerodynamic focusing lens stack equivalent at atmosphere pressure; and a Stokes number range. Based on the design parameters, the method and system determines the total number of focusing lenses and their respective orifice diameters required to focus the particle size range to be considered, by first calculating for the orifice diameter of the first focusing lens in the Stokes formula, and then using that value to determine, in iterative fashion, intermediate flow values which are themselves used to determine the orifice diameters of each succeeding focusing lens in the stack design, with the results being output to a designer. In addition, the Reynolds numbers associated with each focusing lens as well as exit nozzle size may also be determined to enhance the stack design.

Inventors:
 [1];  [2];  [3];  [4];  [5];  [6];  [7]
  1. San Francisco, CA
  2. Oakland, CA
  3. Diablo Grande, CA
  4. Livermore, CA
  5. Kensington, CA
  6. Albany, CA
  7. Brentwood, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1032644
Patent Number(s):
8065119
Application Number:
12/052,597
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 97 MATHEMATICS AND COMPUTING

Citation Formats

Gard, Eric, Riot, Vincent, Coffee, Keith, Woods, Bruce, Tobias, Herbert, Birch, Jim, and Weisgraber, Todd. Computerized method and system for designing an aerodynamic focusing lens stack. United States: N. p., 2011. Web.
Gard, Eric, Riot, Vincent, Coffee, Keith, Woods, Bruce, Tobias, Herbert, Birch, Jim, & Weisgraber, Todd. Computerized method and system for designing an aerodynamic focusing lens stack. United States.
Gard, Eric, Riot, Vincent, Coffee, Keith, Woods, Bruce, Tobias, Herbert, Birch, Jim, and Weisgraber, Todd. Tue . "Computerized method and system for designing an aerodynamic focusing lens stack". United States. https://www.osti.gov/servlets/purl/1032644.
@article{osti_1032644,
title = {Computerized method and system for designing an aerodynamic focusing lens stack},
author = {Gard, Eric and Riot, Vincent and Coffee, Keith and Woods, Bruce and Tobias, Herbert and Birch, Jim and Weisgraber, Todd},
abstractNote = {A computerized method and system for designing an aerodynamic focusing lens stack, using input from a designer related to, for example, particle size range to be considered, characteristics of the gas to be flowed through the system, the upstream temperature and pressure at the top of a first focusing lens, the flow rate through the aerodynamic focusing lens stack equivalent at atmosphere pressure; and a Stokes number range. Based on the design parameters, the method and system determines the total number of focusing lenses and their respective orifice diameters required to focus the particle size range to be considered, by first calculating for the orifice diameter of the first focusing lens in the Stokes formula, and then using that value to determine, in iterative fashion, intermediate flow values which are themselves used to determine the orifice diameters of each succeeding focusing lens in the stack design, with the results being output to a designer. In addition, the Reynolds numbers associated with each focusing lens as well as exit nozzle size may also be determined to enhance the stack design.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {11}
}

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Works referenced in this record:

A Design Tool for Aerodynamic Lens Systems
journal, June 2006


Numerical Characterization of Particle Beam Collimation: Part II Integrated Aerodynamic-Lens–Nozzle System
journal, June 2004


Focusing of Aerosols into a Particle Beam at Pressures from 10 to 150 Torr
journal, November 1999


Generating Particle Beams of Controlled Dimensions and Divergence: I. Theory of Particle Motion in Aerodynamic Lenses and Nozzle Expansions
journal, January 1995


A Numerical Characterization of Particle Beam Collimation by an Aerodynamic Lens-Nozzle System: Part I. An Individual Lens or Nozzle
journal, May 2002