Search found 1231 matches
- Wed Dec 08, 2010 11:12 am
- Forum: Interesting Links
- Topic: Other approaches
- Replies: 0
- Views: 2006
- Tue Dec 07, 2010 10:04 pm
- Forum: Fusor and/or General Fusion Theory (& FAQs)
- Topic: POPS
- Replies: 30
- Views: 14801
Re: POPS
<t>Nop - I suggested the sparkgap to keep the cost down and provide a good workable system that can be built on a small budget. It will not allow you much control of pulse width - more the other circuit components and layout. <br/> <br/> UHF or Microwave technics are required. Inductance will allow ...
- Tue Dec 07, 2010 1:16 pm
- Forum: Fusor and/or General Fusion Theory (& FAQs)
- Topic: POPS
- Replies: 30
- Views: 14801
Re: POPS
Thinking about it - you would be best using a triggered spark-gap ( you can make yourself ) and a cap - it would give you a usefull HV pulse and not cost much - don't try to use a sine - not efficient for energy transfer.
- Tue Dec 07, 2010 12:28 pm
- Forum: Fusor and/or General Fusion Theory (& FAQs)
- Topic: POPS
- Replies: 30
- Views: 14801
Re: POPS
<t>At high voltage a thyratron or a spark gap is the switch of choice - the problem with short pulses ( sub-nanosec pulse width ) is usual getting fast rise or fast fall time which can be difficult to get when using high energy. Keep the impedance as low as possible to achieve high energy fast trans...
- Mon Dec 06, 2010 12:07 am
- Forum: Fusor and/or General Fusion Theory (& FAQs)
- Topic: POPS
- Replies: 30
- Views: 14801
Re: POPS
<t>The great advantage of pulses is that you can use more power for a shorter time - beyond that which would distroy apparatus otherwise. <br/> <br/> Apparatus may withstand a short burst of power at a level which would distroy it, if continuously applied.<br/> <br/> Efficiency remains the same for ...
- Sun Dec 05, 2010 11:32 pm
- Forum: Vacuum Technology (& FAQs)
- Topic: Can a house hold copper pipe hold a vacuum?
- Replies: 8
- Views: 5076
Re: Can a house hold copper pipe hold a vacuum?
The maximum pressure differiental from a vacuum is one atmosphere - very large dia pipes of very thin wall may be a problem but standard domestic pipe must meet standards which require withstanding several atmosphere test pressure.
- Sat Nov 27, 2010 12:08 pm
- Forum: Neutrons, Radiation, and Detection (& FAQs)
- Topic: homemade neutron detector using ZnS(Ag) scintillator, is that possible ?
- Replies: 5
- Views: 5080
Re: homemade neutron detector using ZnS(Ag) scintillator, is that possible ?
<r>All this has been discussed before - read old posts ;-<br/> <br/> <URL url="http://www.fusor.net/board/viewtopic.php?f=13&t=5432#p36433"><LINK_TEXT text="viewtopic.php?f=13&t=5432#p36433">http://www.fusor.net/board/viewtopic.php?f=13&t=5432#p36433</LINK_TEXT></URL><br/> <br/> And if y...
- Thu Nov 25, 2010 2:06 pm
- Forum: Neutrons, Radiation, and Detection (& FAQs)
- Topic: Identify the isotopes
- Replies: 23
- Views: 9091
Re: Identify the isotopes
Richard the text books more or less explain the levels but not the reason an atom can remain stable for millions of years before decaying while its neighbour remains stable for another million and some decay in subnano sec
- Wed Nov 24, 2010 1:09 am
- Forum: Neutrons, Radiation, and Detection (& FAQs)
- Topic: Identify the isotopes
- Replies: 23
- Views: 9091
Re: Identify the isotopes
Steven
Still does not explain why particular isotopes emit with characteristic energy - isotopes from the same element emit at different energy levels.
Still does not explain why particular isotopes emit with characteristic energy - isotopes from the same element emit at different energy levels.
- Tue Nov 23, 2010 9:37 pm
- Forum: Books & References
- Topic: Talk on Gamma Spec
- Replies: 2
- Views: 3561
Re: Talk on Gamma Spec
All is learning Jon - but I much prefer your method