At 4:55 PM 11/26/4, Jones Beene wrote:
>--- Horace Heffner wrote:
>
>> The good news is that *gaps* between superconductors
>can be used to generate radiation by imposing a
>potential across the gap.  Unfortunately, the gap must
>be small enough that electrons can tunnel back and
>forth...
>
>Thanks for that information. This is encouraging...
>especially for generation of terahertz radiation,
>which passes through just about anything (including
>presumably the HTSC itself),


Well, 1 THz corresponds to about 0.3 mm wavelength, which is far thermal
infrared.  I expect some would be absorbed and some reflected, depending on
the surface characteristics.  I don't think even ordinary conductors are
transparent to this frequency of radiation.  It takes x-rays to penetrate a
superconductor.



Regards,

Horace Heffner          


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