HT MAS

Doty High-Temperature CPMAS Probes

in a class by itself

Simple, safe operation up to 700^οC
6.5 kHz MAS from 250 ^οC to 600 ^οC.
5.0 kHz from 600 ^οC to 700 ^οC.

Spinning up to 6 kHz

Double-balanced, multi-X, high-efficiency RF

Ultra-low (<1%) thermal gradients
Silicon-nitride stator, rotor and turbine

45 kHz ¹H decoupling at 600 ^οC, 500 MHz 
(Double-tuned available up to 500 MHz)

Efficient heat exchanger for maximum safety

⁷⁰Pt – ³⁰Rh heater element for long life

The bell-dewar construction includes alumina-dispersion-strengthened copper, a superalloy, a custom Cu-Ni alloy, Sn-bronze, and three braze alloys. A 30-hour vacuum bake-out at 620°C ensures long-term  reliability.

Click here, to see spectra taken with Doty High-Temperature CPMAS probes

• Highly optimized, high temperature Si₃N₄ rotor/turbines have laser-machined blades with an integral shroud.
• The Radial-inflow Si₃N₄ turbines minimize N₂ gas consumption
• Low-cost, boron-nitride sample cell inserts( inside Si₃N₄ rotor) for melting, reacting and outgassing situations.
• A screw plug (with a central hole for outgasing) holds the boron nitride insert in place in the rotor while plugging the hole.

Part number	Item description	Price (US$)
43648	Silicon- nitride high-temp rotor. Rotor (requires a screw and insert) ——————————————————————————- Early HT spinners have different inserts and rotors.  Reference the High Temperature Accessories Page.	$ 2000
43965	Boron nitride high-temp. rotor insert	$ 90
07830	Zirconia high-temp. rotor screw	$ 300
08140	Macor high-temp. rotor screw	$ 80