产品详情
  • 产品名称:EDS / WDS校准标准

  • 产品型号:6065
  • 产品厂商:其它品牌
  • 产品文档:
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简单介绍:
Ultra High Vacuum Compatible Micro and Macro Analysis Standard for Surface and X-ray Analysis UHV (ultrahigh vacuum) compatible (10-10 torr) Suitable for spectral and intensity references for EDS, WD
详情介绍:

Analysis accuracies of 1-2% (relative) are possible only when appropriate standards are used. UHV systems cannot accept commonly available standard sets because of outgassing of mount materials and degradation from electron beam heating. The use of bakelite, plastic or epoxy embedded standards under UHV conditions have prevented accurate analysis. These inaccuracies are caused by compromised vacuum levels and contaminated reference standards. Also, standardless techniques give no indication that some elements may not be accounted for or are present in an oxide phase.

Reference standards supplied with the UHV-EL, which contain only UHV compatible materials, can be used to characterize the transmission of the electron energy analyzer, determine peak shapes, resolution, energies and sensitivity factors.

Since generalized sensitivity factors cannot be used with a reasonable degree of accuracy, even for the same instrument model, it is necessary for these factors to be determined for each unique instrument, on a continuing basis. Conditions will change over time because of peak shift, amplifier settings and spectrometer tolerances.
 

Design
The retainer is precision machined by numerically controlled tools from stainless steel 304. The round UHV-EL-37 is laser engraved to assist in locating the desired reference standard using electron or optical imaging. All reference standards are precisely referenced within 0.13mm of the top surface. This recess protects the reference standard surfaces from contamination and scratching and also minimizes the possibility of X-ray fluorescence from the retainer. The reference standards, which are of various thicknesses, are retained by SS304 clips which are inserted from the bottom of the mount.

Reference standards are individually sized and polished according to the properties of the material. Cross contamination and smearing is avoided.
 

If a reference standard surface gets roughened from excessive ion beam sputtering or is too highly oxidized, it can be easily removed and replaced in your laboratory. Tools and clips are provided. If bulk materials are not available for some reference standards, powders are used. They are consolidated with silver flake and the powder grains metallographically polished. Many insulators prepared this way are sufficiently conductive for X-ray and Auger analysis without carbon coating. The silver can be used for reference when determining sensitivity factors.

Custom Preparation
Your materials may be inserted into one of the retainers described using careful techniques. Electron beam X-ray techniques and reference standards - which are charge sensitive - can be carbon coated.

Shipping
UHV-EL-37 circular retainer reference standards are shipped in a VACU-STORR container. It is optional for other configurations or custom orders.

Certification
The purity or composition of each reference standard is certified by the manufacturer. The SRM classes and certified alloys are NIST traceable, please see information on Reference Standards and Alloys below.

Prod # Description Unit
UHV-EL Retainers Without Standards
6065
UHV-EL Rectangular Retainer, 9 x 12mm, 6 spaces
each
6066
UHV-EL Square Retainer, 13 x 12mm, 9 spaces
each
6067
UHV-EL Rectangular Retainer, 17 x 12mm, 12 spaces
each
6068
UHV-EL Rectangular Retainer, 21 x 12mm, 15 spaces
each
6069
UHV-EL Rectangular Retainer, 25 x 12mm, 18 spaces
each
6070
UHV-EL Round Retainer, 25mm diameter, 37 spaces
each
UHV-EL Single Reference Standards (3mm dia.) for Retainers
6060
UHV-EL - Any Single Reference Standard other than Diamond, Cu/Au, Ag/Au or Al/Cu (specify number from list)
each
6061
Diamond UHV-EL Single Reference Standard, (No. 21 and No. 168 on list)
each
6062
Cu/Au UHV-EL Single Reference Standard, SRM482, 5 wires (No. 197 on list)
each
6063
Al/Cu UHV-EL Single Reference Standard (No. 230 on list)
each
6091
Ag/Au UHV-EL Single Reference Standard, SRM481, 6 wires (No. 197A on list)
each
6064
Faraday Cup for UHV-EL to measure beam current
each
UHV-EL Retainers Complete With Reference Standards
6075
UHV-EL Rectangular Retainer, 8.5 x 12.5mm, with 6 reference standards (select from list)
each
6076
UHV-EL Square Retainer, 12.5 x 12.5mm, with 9 reference standards (select from list)
each
6077
UHV-EL Rectangular Retainer, 16.5 x 12.5mm, with 12 reference standards (select from list)
each
6078
UHV-EL Rectangular Retainer, 19.5 x 12.5mm, with 15 reference standards (select from list)
each
6079
UHV-EL Rectangular Retainer, 24 x 12.5mm, with 18 reference standards (select from list)
each
6080
UHV-EL Round Retainer, 25mm diameter, with 37 reference standards (select from list)
each
6081
UHV-EL Round Retainer, 25mm diameter, Standard Configuration with 37 reference standards
each

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