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Title: 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:
 [1];  [2];  [1]
  1. (Los Alamos, NM)
  2. (Jemez Springs, NM)
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
866593
Patent Number(s):
4745277
Assignee:
United States of America as represented by United States (Washington, DC) LANL
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 = {1988},
month = {1}
}

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