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Title: Pressure-flow reducer for aerosol focusing devices

Abstract

A pressure-flow reducer, and an aerosol focusing system incorporating such a pressure-flow reducer, for performing high-flow, atmosphere-pressure sampling while delivering a tightly focused particle beam in vacuum via an aerodynamic focusing lens stack. The pressure-flow reducer has an inlet nozzle for adjusting the sampling flow rate, a pressure-flow reduction region with a skimmer and pumping ports for reducing the pressure and flow to enable interfacing with low pressure, low flow aerosol focusing devices, and a relaxation chamber for slowing or stopping aerosol particles. In this manner, the pressure-flow reducer decouples pressure from flow, and enables aerosol sampling at atmospheric pressure and at rates greater than 1 liter per minute.

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:
985548
Patent Number(s):
7361891
Application Number:
11/471,093
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:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Gard, Eric, Riot, Vincent, Coffee, Keith, Woods, Bruce, Tobias, Herbert, Birch, Jim, and Weisgraber, Todd. Pressure-flow reducer for aerosol focusing devices. United States: N. p., 2008. Web.
Gard, Eric, Riot, Vincent, Coffee, Keith, Woods, Bruce, Tobias, Herbert, Birch, Jim, & Weisgraber, Todd. Pressure-flow reducer for aerosol focusing devices. United States.
Gard, Eric, Riot, Vincent, Coffee, Keith, Woods, Bruce, Tobias, Herbert, Birch, Jim, and Weisgraber, Todd. Tue . "Pressure-flow reducer for aerosol focusing devices". United States. https://www.osti.gov/servlets/purl/985548.
@article{osti_985548,
title = {Pressure-flow reducer for aerosol focusing devices},
author = {Gard, Eric and Riot, Vincent and Coffee, Keith and Woods, Bruce and Tobias, Herbert and Birch, Jim and Weisgraber, Todd},
abstractNote = {A pressure-flow reducer, and an aerosol focusing system incorporating such a pressure-flow reducer, for performing high-flow, atmosphere-pressure sampling while delivering a tightly focused particle beam in vacuum via an aerodynamic focusing lens stack. The pressure-flow reducer has an inlet nozzle for adjusting the sampling flow rate, a pressure-flow reduction region with a skimmer and pumping ports for reducing the pressure and flow to enable interfacing with low pressure, low flow aerosol focusing devices, and a relaxation chamber for slowing or stopping aerosol particles. In this manner, the pressure-flow reducer decouples pressure from flow, and enables aerosol sampling at atmospheric pressure and at rates greater than 1 liter per minute.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {4}
}

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