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:
-
- San Francisco, CA
- Oakland, CA
- Diablo Grande, CA
- Livermore, CA
- Kensington, CA
- Albany, CA
- Brentwood, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (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}
}