Can KNO3 and bentonite clay increase rocket engine performance?

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novamarine
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Question,

If I make a rocket engine using KNO3 fuel and bentonite clay for the nozzle, shouldn't the ISP of the engine be slightly higher due to the radiation?
It would be nearly Immeasurable but nevertheless there.

Kind of like the way a NERVA engine works.
 
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Bentonite clay has compounds of uranium or thorium in it.
 
I have heard it can be used to absorb some radioactive elements, but I have never heard about bentonite to be radioactive on its own.
 
It's what makes cat litter slightly radioactive.
 
Have you ever heard about background radiation? Everything is to some extent radioactive, including bananas and water we drink. If natural bentonite is radioactive, it is most likely because of the presence of K-40, not thorium or uranium.