Search found 130 matches

by ChrisSmolinski
Mon Aug 18, 2003 4:34 pm
Forum: FAQs: Neutron - Radiation Detection
Topic: FAQ - Geiger counter tips and techniques.
Replies: 3
Views: 6568

Re: FAQ - Geiger counter tips and techniques.

<t>An excellent article, thanks Richard.<br/> <br/> One question - wouldn't a pancake GM tube be fairly efficient for betas, even higher energy? As I recall, it just takes one interaction in the gas for a pulse to be produced, and I would think that even a high energy beta will make a few interactio...
by ChrisSmolinski
Sun Jun 29, 2003 9:56 pm
Forum: Fusion --- Past, Present, and Future
Topic: Fusion will NOT save America
Replies: 21
Views: 7382

Re: Fusion will NOT save America

<t>Anonymous Guy wrote:<br/> > Have you ever thought about the way the universe has been set up <br/> to prevent us humans from creating the ideal world and civilization? <br/> The universe seems engineered to support a complex and interesting <br/> enviroment, from stars and galaxies to complex lif...
by ChrisSmolinski
Thu Jun 26, 2003 6:08 pm
Forum: Fusion --- Past, Present, and Future
Topic: Fusion will NOT save America
Replies: 21
Views: 7382

Re: Fusion will NOT save America

<t>Richard Hull wrote:<br/> > Chris is sort of getting that old feeling like I have for the last 4 years regarding fusion. Especially miming my post "Onto every parade a little rain must fall"<br/> > <br/> > PRACTICAL, POWER READY FUSION JUST LOOKS BAD! The problems boarder on insurmountable and the...
by ChrisSmolinski
Thu Jun 26, 2003 12:29 pm
Forum: Fusion --- Past, Present, and Future
Topic: Fusion will NOT save America
Replies: 21
Views: 7382

Re: Fusion will NOT save America

<t>Richard Hull wrote:<br/> > The important aspect of oil has already been stated. Oil is doomed, long term, and cripplingly hobbled in the immediate, short term future. <br/> <br/> There is a researcher (I forget his name) who I heard on NPR several months ago. He has a somewhat bizzare theory that...
by ChrisSmolinski
Tue Jun 24, 2003 7:40 pm
Forum: Fusion --- Past, Present, and Future
Topic: Fusion will NOT save America
Replies: 21
Views: 7382

Re: Fusion will NOT save America

<t>What happened to the folks who made buggywhips when cars replaced horse drawn carriages? People have always been displaced from one line of when, when technology obsoleted it. The nimble adapted and found new work. <br/> <br/> When 100% of the people had to work to produce food (think tens of tho...
by ChrisSmolinski
Thu Jun 19, 2003 2:04 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: THORIUM (IV) OXIDE Harzard Sheet
Replies: 7
Views: 2354

Re: THORIUM (IV) OXIDE Harzard Sheet

Want some very cheap thorium mantles? This company has a bunch (25,000 at last count) they are trying to get rid of. $25 got me around a hundred.

American Mantle Co.
410 Bedford Rd.
Morris, Ill 60450
Attn: Bonnie
by ChrisSmolinski
Wed Jun 18, 2003 6:12 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Canberra 35+ MCA Help Needed
Replies: 24
Views: 5282

Re: Canberra 35+ MCA Help Needed

<t>Canberra has a service manual for the 35+ available for (gulp) $65. Does anyone have experience with these? Will it be worthwhile in addition to the operators manual and schematics that I already have? I have an email into OETech to see if he has one, no reply yet. I still want to see if I can gr...
by ChrisSmolinski
Wed Jun 18, 2003 12:04 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Canberra 35+ MCA Help Needed
Replies: 24
Views: 5282

Re: Canberra 35+ MCA Help Needed

<t>I'm going to try a new angle with the 35+ I'm pouring over the <br/> schematics to see if I can extract the ADC ouputs from that <br/> card. It looks like the important front panel controls go directly <br/> to the ADC card. If the uP is needed to control it, I hope I can <br/> tap off it, and fe...
by ChrisSmolinski
Tue Jun 17, 2003 2:13 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: BF3 detector on ebay
Replies: 2
Views: 1617

Re: BF3 detector on ebay

LND sells a variety of BF3 tubes. If the pricing of their BF3 tubes is similar to their other tubes, buying in qty 10 substantially cuts the price from qty 1. Would there be any interest in doing a group buy of some BF3 tubes from folks who want to try their hand at building a neutron detector?
by ChrisSmolinski
Sat Jun 14, 2003 1:03 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Canberra 35+ MCA Help Needed
Replies: 24
Views: 5282

Re: Canberra 35+ MCA Help Needed

<t>I've not started to look through the circuits yet, but did they <br/> use improperly rated tantalums? I've used these caps myself <br/> (in real production jobs not just at home) without problem. <br/> Well, except for when someone decided to install them <br/> backwards. They will blow up, the b...