GTrax said:
Hee Hee
About $800 would buy you the non-evaporating oil for the booster vacuum pump. Its not too hard to price up all the little bits and pieces and get over $10000 without getting around to any main fusor bits at all!
You have to have a good picture in your mind of just how vastly empty is the space between and inside of those atoms, and how truly difficult it is to force some nuclei near each other, given they fiercely resist most of the way. Nuclear engineers have been determinedly trying every trick they can dream up for decades.
...
The sub $10000 route is just not feasible. Just spent on paying you for your efforts toward this endeavour, how long would you work for that much, let alone put to purchasing hardware?
The vacuum/diffusion pump is indeed usually the highest cost component. However, please re-read the OP and let's not go off topic, the OP is clearly about the possibility of amateur experimentation. For materials cost alone a D-D IEC device with measurable neutron output (10^5/sec) can indeed be made for very little, <<$10000.
Physicsweb link:
www.fusor.net/board/getfile.php?bn=fusor_announce&att_id=3320[/URL]
[QUOTE]But this device, known as a “fusor”, [B]cost about £3000[/B] and was put together by two secondary-school students in the garage of one of their parents’ houses in Torquay. One, Henry Hallam, is now a second-year engineering undergraduate at Cambridge and the other, Fergus Noble, will start a natural sciences degree later this year.[/QUOTE]
Matl list for another plasma only (and likely to implode) amateur effort:
[QUOTE]Surplus Microwave oven transformer and diode $ 0
Jar (after pickles eaten) $ 0
Used Variac core $ 27 plus $13 shipping
Used rotary vacuum pump $ 21 plus $30 shipping
(makes some noise buit appears to be working well (?) )
Hand vacuum pump $ 20
Automotive vacuum gauge $ 25
Spark plug wire $ 15
Varoius hardware supplies ~$ 60
(PVC pipe, fittings, glue, on hand supplies,
wasted/aborted materials,etc)
_______
Material Cost Total ~$200 [/QUOTE]
The pump was an old Scientific Instruments unit, user estimated he got down to 200-400mTorr.
[PLAIN]http://www.fusor.net/board/getfile.php?bn=fusor_construction&att_id=4732
Edit: Here's another way to go round about to getting a high vacuum.
http://www.lesker.com/newweb/traps/forelinetraps_absorbentplate_micromaze.cfm?pgid=0
"These traps will effectively absorb oil vapor backstreaming from the pump, protecting the vacuum system from oil contamination"; used w/ a rotary vane vacuum pump and ordinary hydrocarbon oil one can get down to 1e-5 Torr, low enough to see ample D-D fusion at 10-15KV.
$350.