Dear Vratislav,
>does somebody know of a manufacturer of a small
>high-frequency generator, which could be used for high-T (1200-1300
>deg C) inductive heating of minerals ?
A big word of CAUTION from my unpleasant experience!
Although you don't say, you will probably be thinking of using the
induction heater for D/H work, am I right?
If so, you should make very sure of the working frequency of the heater; if
the working frequency is any near the resonance frequency of any of the
melting products of the mineral (water, H2, CO2, ... etc), you will
generate a plasma in your vacuum chamber. I do not know if anybody has
worked this out recently, but at the time I had just such a problem, no
experimental work was available on the isotopic fractionation produced. The
results were useless.
At the time we were using a STANELCO (address as indicated by Rafael) 2
MHz, 0.8 KW generator. Once we determined the problem was resonance, I
contacted STANELCO to try to solve the problem, but they were "not very
helpful" (to be polite!).
As a result, we had to buy a new induction heater, this time a CIH model
TR1-1kW with remote workhead. This is a variable frequency (50 kHz to 200
KHz; please note: kilohertz rather than megahertz!), 1kW maximum continuous
output power.
It costed us over 8,000 pounds sterling, but at least, we are quite
satisfied with performance and results.
If you are interested in further details, please contact me directly.
CHELTENHAM INDUCTION HEATING,Ltd.
Phoenix Works, Saxon Way
Battledown Industrial State
Cheltenham, Glos. GL52 6RU
England
Phone: +44 1242 514042
Fax: 1242 22 41 46
Cheers,
Clemente
P.S.: By the way, our old Stanelco is in perfect condition (nearly never
used). Anybody interested in purchasing it?
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Dr. Clemente Recio
Stable Isotope Laboratory
Fac. de Ciencias
Univ. de Salamanca
E 37008 - Salamanca
Spain
Phone: (+34) 23 29 44 00 Ext. 1540
Fax: (+34) 23 29 45 14
E-mail: [log in to unmask]
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