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Electron Microprobe Lab, University of Minnesota

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*

The TXE spectrometer was developed 25 years ago to improve the carbon
count rate. It is a spectrometer that features a lead stearate film
deposited on a large doubly-curved glass substrate. It did in fact
improve the carbon count rate by a factor of 3 over the standard size
crystal. Since then the multilayered crystals provided by Osmic far out
perform this old design. The singular advantage of this TXE spectrometer
is that the lead stearate crystal has much better energy resolution than
the new multilayers. Therefore, it's only advertised as a spectrometer
for looking at very light energy line shifts usually caused by differing
valence states.

FYI, this TXE spectrometer uses a crystal flip mechanism that is
head-over-heels like the old ARL probes. It is a service nightmare and
has been banned in North America.

Charlie

Charles H. Nielsen
JEOL USA Inc.
Vice President
Product Manager
(978)536-2261


-----Original Message-----
From: JEOL-Focused Probe Users List [mailto:[log in to unmask]] On
Behalf Of John Fournelle
Sent: Friday, April 20, 2007 12:00 PM
To: [log in to unmask]
Subject: Re: [PROBE-USERS] JEOL light element spectrometer

JEOL Probe Users Listserver

Moderator: Ellery Frahm, [log in to unmask],
Electron Microprobe Lab, University of Minnesota

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*

Alfred

I assume you are referring to an extended range TAP spectrometer. The 
only one that I know of is the SX50 at Princeton University, if this 
is of any help.

John
-- 
========================================================
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