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base for small bell jar.?
ok so i need s base for a small bell jar. I want the jar to be seven inches internal, under eight outside. i have 10 mm mild steel plate. I have edwards pump to use. The base plate is 8*8 inch. The surface is a little warn. What should i place between the jar and plate.. I plan on putting a metal cage round it for safety. The project is a small home fusion reactor. People say they wnt work. But my physics teacher has checked my maths and thinks it could. I will use a high pd to accelerate deuterium towards inner grid. Anyways basically its going to have high vacuum. What is the best way to attach the jar t base plate, would a cushion of silicon sealant do? I will machine holes into base. I plan on having a central inlet for electrode and outer one. As well as a 10mm hole for vacuum outlet. What should i use for the protective mesh around it? thanks.
high pd? do you mean a high pulse diode or high amperage? Either way, you may want to do some research on Maglev.
Magnetic induction of particles is the basis on which the LHC works, and one of the means the US used to refine U238 at oak ridge.
for shielding:
The materials used should be dependent on the type of energy you are trying to shield.
for heat containment, (i.e. IR radiation,) silicon works best--that's why the space shuttle has ceramic tiles for a heat shield. Ceramics absorb heat quickly and release the energy slowly.
by placing a metal cage around the glass jar, you may be creating an electrical condenser, so you may want to consider electrical shielding as well.
as for alpha and beta particles, few things beat lead as a shield.
for magnetic containment, consider aluminum- it has the highest anisomagnetic value of all the metals. alternatively, you could use use hard magnets to create a hilbert field to interfere and therefore reduce pulse from the diode. (remember that magnetic pulses are omnidirectional unless you shield the pulse in directions you don't want the field to go.)
Regarding the vacuum:
Nequaquam Vacuum. Even the ancient romans knew that there is no such thing as a true vacuum.
vacuum containment always has a portion of air in it, even if you've got a 10 million dollar vacuum pump. what they really do is simply reduce the number of air molecules (and therefore pressure) within the containment device. If the pressure difference is too great between the interior and exterior of the device, it will implode. a glass device will usually crack first and you'll lose your 'vacuum'.
Consider using helium as a means to both evacuate your container and as a neutral medium in which to work. normal air can be displaced by Helium, and as it is highly reactive to heat, the majority of those molecules can be quickly evacuated from the container simply by applying heat then resealing the container. Furthermore, as a noble gas, helium is chemically inert.
Finally, remember that if you succeed, a fusion reaction releases a LOT of energy. (about a hundred times more than a fission reaction.) You should probably consider setting up your experiment in an abandoned granite quarry and trigger it from several miles away by remote control. if you use a video feed to watch and control the experiment, expect to lose the feed when fusion does occur, as the emp will disable any electronic devices in the area that are not consumed by the explosion.
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