Search found 130 matches

by ChrisSmolinski
Tue Sep 16, 2003 12:04 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Nice Radiation monitor for sale
Replies: 8
Views: 3232

Re: Nice Radiation monitor for sale

<t>Richard Hull wrote:<br/> > I just ordered one of these items which came highly recommended by a fellow specialist as an interesting item to have on hand.<br/> > <br/> > It is a Russian made pocket gieger meter/dosimeter. Complete with little LCD readout. Nice.<br/> > <br/> > It is avaialble from ...
by ChrisSmolinski
Tue Sep 16, 2003 11:56 am
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: The theoretical musings continue.
Replies: 60
Views: 12341

Re: The theoretical musings continue.

<r>Richard Hull wrote:<br/> > <br/> > CAN ANYONE NAME ONE FORM OF ENERGY THAT IS NOT TRACEABLE TO STELLAR FUSION (gravity at work) OR COULOMBIC ACTION (electrons at work)?<br/> > <br/> > Richard Hull<br/> <br/> If, as some theories suggest, [nearly] equal amounts of matter and anti-matter were produ...
by ChrisSmolinski
Mon Sep 15, 2003 11:57 am
Forum: Fusion --- Past, Present, and Future
Topic: If energy producing fusion occured tomorrow, what would happen?
Replies: 20
Views: 6842

Re: If energy producing fusion occured tomorrow, what would happen?

<t>mtrusty wrote:<br/> > Am I the only one who has noticed the defacto inflation in the last 5-8 years? Gas prices now considered normal at $1.50 a gallon, takes $6 for a fast-food meal and you almost cannot sit down in a chain for less than $12 a head? Am pretty sure people aren't getting paid more...
by ChrisSmolinski
Tue Sep 09, 2003 4:45 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Canberra 35+ MCA Help Needed
Replies: 24
Views: 5281

Re: Canberra 35+ MCA Help Needed

<t>Thanks for the ebay heads up Richard, I've checked several times in the past and nothing came up. Of course it's there when I don't look!<br/> <br/> Mike: I get one click when I press a button, then that's it. So it's possible the CPU board is flaking out, that might explain the odd CRT display. ...
by ChrisSmolinski
Mon Sep 08, 2003 12:04 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Canberra 35+ MCA Help Needed
Replies: 24
Views: 5281

Re: Canberra 35+ MCA Help Needed

<t>I've given the PCB edge connectors a good cleaning, and checked the PCBs for any obvious track damage - none found. Some evidence of re-work on the CPU board (bottom center near the edge connector), as well as some very slight corrosion on the PCB itself from a leaking battery? Cleaned that up, a...
by ChrisSmolinski
Mon Sep 08, 2003 11:58 am
Forum: Fusion --- Past, Present, and Future
Topic: OPEC Blues
Replies: 23
Views: 7563

Re: OPEC Blues #2

<t>Anonymous Guy wrote:<br/> > <br/> > As far as oil, While it will become more expensive to extract oil there is vast supplies. For instance Canada has the most oil reserves in the world, except its in heavy oil. New technology has been discovered using steam to extract it instead of the current op...
by ChrisSmolinski
Thu Sep 04, 2003 12:27 pm
Forum: Fusion --- Past, Present, and Future
Topic: OPEC Blues
Replies: 23
Views: 7563

Re: OPEC Blues #2

<t>Richard Hull wrote:<br/> > Where's fusion? Way, way back yonder......where its always been....... but not even a "real soon now" to be heard.....It doesn't have that same old ring that Lyman Spitzer gave it back in 1950.<br/> <br/> I did some quick googling, but was unable to find an answer to a ...
by ChrisSmolinski
Wed Sep 03, 2003 1:21 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Canberra 35+ MCA Help Needed
Replies: 24
Views: 5281

Re: Canberra 35+ MCA Help Needed

<t>Jon,<br/> <br/> Glad to hear you got it up and running! My 35+ doesn't get even as far as yours initially did. Cleaning board contacts is on the to-do this.<br/> <br/> My CPU board has no batteries on it, looking at the [poor copy quality] schematics I have, it looks like a jumper is installed by...
by ChrisSmolinski
Tue Aug 26, 2003 1:37 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Efficiency of solid state detectors for beta detection?
Replies: 3
Views: 1966

Re: Efficiency of solid state detectors for beta detection?

<t>It's certainly not a professional detector, it's one producted in quantity (by us) for industrial control applications (measurements of material by beta attenuation). Just an off the shelf PIN photodiode with a charge amplifier, and a thin aluminumized mylar window to block light and offer some p...
by ChrisSmolinski
Tue Aug 19, 2003 3:55 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Efficiency of solid state detectors for beta detection?
Replies: 3
Views: 1966

Efficiency of solid state detectors for beta detection?

<t>Here's a question for anyone familiar with solid state detectors. Any guesstimates of the efficiency for beta detection? <br/> <br/> Using a Pm147 source and a 1 cm^2 PIN photodiode as the detector, and roughly taking into account attenuation due to materials in the beam and the beta spectrum and...