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Electron Microscopy Sciences

Scanning Electron Microscope Supplies

arrow14Scintillators for Scanning Electron Microscopes

arrow12P47 Scintillators

They are coated with a thin layer of well selected P47 phosphor (Y1Si2O7:Ce3+; yttrium silicate activated with cerium), and have a high signal output and a good working life. They need not be coated with aluminum prior to use unless cathodoluminescence studies are required.

arrow12YAG Single Crystal Scintillator Discs

Advantages:

  • Low Phosphor Noise.
  • High Resistance to Radiation Damage.
  • Long Working Life.
  • Possible Application in Ultrahigh Vacuum Conditions.

YAG (Yttrium Aluminum Garnet activated by Ce3+) has a very fast response time of 50-60ns and they do withstand well to the bombardment by electrons or ions far better than plastic or phosphor scintillators. Light emission peaks at about 560nm which means that S20 photocathodes are most suitable for detecting the emission. YAG is suited for high current operations. The response is better then for the P47 discs below 5kV and again at higher accelerating voltages, where the performance of powder scintillators fall off while the response of the YAG continues to increase linearly.

The crystal should be coated with 50nm of aluminum prior to use. If the layer becomes damaged it can be removed with sodium hydroxide. The crystals are mounted with the matt surface in contact with the light pipe as this has shown to increase the efficiency.

YAP Single Crystal Scintillator Discs arrow12YAP Single Crystal Scintillator Discs

YAP (Yttrium Aluminum Perovskite activated by Ce3+) shares the same advantages as YAG but is more efficient in terms of light output than YAG crystals. As well, the emission spectrum peaks at about 378nm, and this corresponds closely to the maximum sensitivity of the S11 photocathode which in general is used in most scanning electron microscopes. (There would be more improvement in signal by using a YAP crystal rather than YAG in these microscopes). The decay time of YAP (40ns) is faster than YAG (80ns) so its overall performance is superior to YAG. YAP crystals should be coated with 50nm of aluminum prior to use.

Dia.(mm)x Thick(mm) Instrument P-47 Price Buy P-47 YAG* YAP*
6.2 x 1 Phillip Quad Detector 82010 108.00 Add to Cart Quote Quote
7.5 x 1 ISI Mini-SEM 82012 108.00 Add to Cart Quote Quote
8.5 x 2 JEOL JSM T20, T200 T300, 340 82013 108.00 Add to Cart Quote Quote
9.0 x 3 ETEC 82014 108.00 Add to Cart Quote Quote
10.0 x 1 Cambridge except S600 AMRAY 1200 82016 108.00 Add to Cart Quote Quote
12.0 x 1 Cambridge S600 82017 108.00 Add to Cart Quote Quote
12.0 x .17 Zeiss SEM 82018 108.00 Add to Cart Quote Quote
12.4 x 3.2 Cameca 82020 108.00 Add to Cart Quote Quote
13.7x1 ISI Mini-SEM, JEOL 82021 108.00 Add to Cart Quote Quote
16.4 x .17 Novascan, SEMCO/Zeiss 82022 108.00 Add to Cart Quote Quote
18.0 x 1 Camscan, Balscan Cambridge S-4 82024 108.00 Add to Cart Quote Quote
19.0 x 1 JEOL U3, JSM2 82026 108.00 Add to Cart Quote Quote
19.0 x 7.3 ARL SEMQ 82028 160.00 Add to Cart Quote Quote
19.8 x 1 Hitachi w/metal ring. 82029 160.00 Add to Cart Quote Quote
20.0 x 1 AMRAY except1200 JEOL 50A, 35, Hitachi 82030 108.00 Add to Cart Quote Quote
20.0 x 2 Philips SEM 82032 160.00 Add to Cart Quote Quote

Note: P-47 is usually in-stock. YAG and YAP delivery time is 6-8 weeks.

*Please email to request a price for YAG and YAP scintillators.

Light Pipe Scintillatorsarrow12Light Pipe Scintillators

The light pipe is the connection between the scintillator and the phosphomultiplier tube (PMT). It transfers the photons produced by the scintillator for detection by the PMT. We coat the scintillator material directly on the light pipe which improves the signal. Light Pipes are available in optical quality quartz and optical grade acrylic. Cambridge reduced-tip models are only available in acrylic. High voltage wire and corona ring are included. JEOL pipes include a flange. Price includes one Re-coating Certificate. Re-coating is typically needed twice per year.

P47P Light Pipes
Microscope
Substrate Style Length Cat. No. Price Add to Cart
Cambridge Quartz Angled —— 82000-10 495.00 Add to Cart
Cambridge Quartz Straight 74 mm 82000-74 495.00 Add to Cart
Cambridge Quartz Straight 89mm 82000-89 495.00 Add to Cart
Cambridge Quartz Straight 104mm 82000-104 495.00 Add to Cart
Cambridge Quartz Straight Up to 200mm 82000-X * 495.00 Add to Cart
Cambridge Acrylic Reduced Tip 88mm 82001-88 575.00 Add to Cart
Cambridge Acrylic Reduced Tip 100mm 82001-100 575.00 Add to Cart
Cambridge Acrylic Reduced Tip 120mm 82001-120 575.00 Add to Cart
Cambridge Acrylic Reduced Tip Any 82001-X* 575.00 Add to Cart
JEOL U-2, U-3 Quartz 1/4" Collar 60mm 82004-60 575.00 Add to Cart
JEOL JSM-35 Quartz 1/2" Collar 60mm 82005-60 575.00 Add to Cart
Re-coating Service Various ————- 82008-RS 225.00 Add to Cart

 

SEM Specimen Mounts arrow12arrow12