Rotary turret and reusable specimen holder for mass spectrometer
Abstract
A sample holder for use in a mass spectrometer is provided for heating a sample to discharge ions through an electrostatic field which focuses and accelerates the ions for analysis. Individual specimen holders form a plurality of filaments for heating the sample materials for ion emission. Mounting devices hold the plurality of filaments at regular spaced apart angles in a closed configuration adjacent the electrostatic field elements. A substantially solid ceramic turret is provided with a plurality of electrical contacts which engage the individual holder means for energizing the filaments and forming a corresponding plurality of radially facing, axially extending first conductive surfaces. A substantially solid stationary turret bearing member is mounted about the rotating turret with a plurality of radially biased second electrical conductive surfaces, mounted to electrically contact facing ones of the plurality of radially facing first conductive surfaces. The assembly provides a large thermal mass for thermal stability and large electrical contact areas for repeatable, stable power input for heating the sample materials. An improved sample holder is also provided having a ceramic body portion for removably engaging conductive wires. The conductive wires are compatible with a selected filament element and the sample material to be analyzed.
- Inventors:
-
- Los Alamos, NM
- Jemez Springs, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 866593
- Patent Number(s):
- 4745277
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- rotary; turret; reusable; specimen; holder; mass; spectrometer; sample; provided; heating; discharge; electrostatic; field; focuses; accelerates; analysis; individual; holders; form; plurality; filaments; materials; emission; mounting; devices; hold; regular; spaced; apart; angles; closed; configuration; adjacent; elements; substantially; solid; ceramic; electrical; contacts; engage; means; energizing; forming; corresponding; radially; facing; axially; extending; conductive; surfaces; stationary; bearing; mounted; rotating; biased; electrically; contact; ones; assembly; provides; thermal; stability; repeatable; stable; power; input; improved; portion; removably; engaging; wires; compatible; selected; filament; element; material; analyzed; sample materials; conductive surfaces; mounting device; substantially solid; thermal stability; power input; electrical contacts; assembly provides; sample holder; mass spectrometer; electrical contact; spaced apart; electrostatic field; sample material; axially extending; thermal mass; solid ceramic; specimen holder; electrical conductive; conductive wires; corresponding plurality; conductive surface; improved sample; /250/
Citation Formats
Banar, Joseph C, Perrin, Richard E, and Ostrenga, Raymond A. Rotary turret and reusable specimen holder for mass spectrometer. United States: N. p., 1988.
Web.
Banar, Joseph C, Perrin, Richard E, & Ostrenga, Raymond A. Rotary turret and reusable specimen holder for mass spectrometer. United States.
Banar, Joseph C, Perrin, Richard E, and Ostrenga, Raymond A. Fri .
"Rotary turret and reusable specimen holder for mass spectrometer". United States. https://www.osti.gov/servlets/purl/866593.
@article{osti_866593,
title = {Rotary turret and reusable specimen holder for mass spectrometer},
author = {Banar, Joseph C and Perrin, Richard E and Ostrenga, Raymond A},
abstractNote = {A sample holder for use in a mass spectrometer is provided for heating a sample to discharge ions through an electrostatic field which focuses and accelerates the ions for analysis. Individual specimen holders form a plurality of filaments for heating the sample materials for ion emission. Mounting devices hold the plurality of filaments at regular spaced apart angles in a closed configuration adjacent the electrostatic field elements. A substantially solid ceramic turret is provided with a plurality of electrical contacts which engage the individual holder means for energizing the filaments and forming a corresponding plurality of radially facing, axially extending first conductive surfaces. A substantially solid stationary turret bearing member is mounted about the rotating turret with a plurality of radially biased second electrical conductive surfaces, mounted to electrically contact facing ones of the plurality of radially facing first conductive surfaces. The assembly provides a large thermal mass for thermal stability and large electrical contact areas for repeatable, stable power input for heating the sample materials. An improved sample holder is also provided having a ceramic body portion for removably engaging conductive wires. The conductive wires are compatible with a selected filament element and the sample material to be analyzed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1988},
month = {Fri Jan 01 00:00:00 EST 1988}
}