Search found 51 matches

by Brian_Gage
Tue Dec 20, 2011 10:44 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Freeware Detector Program, Digital Geiger Counter
Replies: 6
Views: 3680

Re: Freeware Detector Program, Digital Geiger Counter

<t>Hi and thanks for the response. Yes, I've also gotten and tried PRA 4.0, and had the same problem, plus a couple more. PRA worked after fiddling with the line-in levels, and PRA also gave me quite a spread in CPM between X1 and X100 attenuation. About 200 CPM on each setting as I recall. Doug Cou...
by Brian_Gage
Mon Dec 19, 2011 1:00 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Freeware Detector Program, Digital Geiger Counter
Replies: 6
Views: 3680

Freeware Detector Program, Digital Geiger Counter

<t>Please excuse the newbie intrusion if this isn't exactly the correct place for this matter. I recently downloaded a program called "Digital Gieger Counter" from Instructables, but it has zip for instructions. I can't appreciate the graphics or graphing functions, but it does allow me to switch fr...
by Brian_Gage
Mon Dec 19, 2011 12:08 am
Forum: Vacuum Technology (& FAQs)
Topic: Diffusion Pump Model
Replies: 20
Views: 5238

Re: Diffusion Pump Model

<t>Carl, I'm fairly new here, so pardon my asking, but have you read the FAQ's on vacuum systems and operating a fusor? I'm still sifting through all that information, but it seems pretty clear that to achieve serious deuterium fusion, you will need a high vacuum system, with a diffusion pump or tur...
by Brian_Gage
Sat Dec 17, 2011 4:36 pm
Forum: Vacuum Technology (& FAQs)
Topic: Diffusion Pump Model
Replies: 20
Views: 5238

Re: Diffusion Pump Model

I'm not set up to use Ebay, but if I was, I'd bid $1.50 to to better the $.99 bid as there's only 3 days left. If successful, I'd suck up the cost of shipping just for the experience of examining, cleaning and fixing it, or tearing down a broken pump to see what's inside.

Brian
by Brian_Gage
Wed Nov 30, 2011 5:57 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: PRA Gamma detection
Replies: 5
Views: 2477

Re: PRA Gamma detection

<t>This may be simplistic, (since I didn't understand a fraction of what you fellows wrote). I downloaded PRA 4.0 out of curiosity. Hooked a direct cable from my Monitor 4 to the PC's mic input jack. Ran some tests. Used a bit of thorium ash with a low (800 CPM) rate at X1, X10 and X100 attenuation....
by Brian_Gage
Wed Nov 23, 2011 12:29 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Is there an optimum voltage?
Replies: 33
Views: 8490

Re: Is there an optimum voltage?

<t>This sounds like the kind of question I might ask, not being able to see the diagrams and photographs!<br/> There are a lot of good descriptions written here that I've read about feed-throughs and techniques. I'd be interested to read an answer. Like, using a diamond drill to make a hole in the g...
by Brian_Gage
Sat Nov 19, 2011 12:20 am
Forum: Vacuum Technology (& FAQs)
Topic: Refrigerator compressors in series as vacuum pumps
Replies: 5
Views: 2807

Re: Refrigerator compressors in series as vacuum pumps

<t>Thanks for the addendum Dave. I won't be attempting improvisations on the high vacuum end of anything. Was just asking, as mentioned in an earlier post, because a recommended page on "Vacuum Pump Basics" suggested two air conditioner pumps in series. I immediately started thinking the existing ga...
by Brian_Gage
Fri Nov 18, 2011 10:32 pm
Forum: Vacuum Technology (& FAQs)
Topic: Refrigerator compressors in series as vacuum pumps
Replies: 5
Views: 2807

Re: Refrigerator compressors in series as vacuum pumps

<t>Thanks Richard. I'd just read a recommended article, Vacuum Pump Basics, which suggested using two air conditioner pumps in series. Scrub that. At this stage, I'm just reading and considering options, and I am looking at vacuum pumps first, though today I did make a couple of inquiries about obta...
by Brian_Gage
Fri Nov 18, 2011 8:28 pm
Forum: Vacuum Technology (& FAQs)
Topic: Refrigerator compressors in series as vacuum pumps
Replies: 5
Views: 2807

Refrigerator compressors in series as vacuum pumps

<t>Fridge compressors are fairly easy to obtain used, but as I recall they have welded 1/4" input and output pipes. Years ago, I saw one of these hooked up and used as a simple vacuum pump, but eventually it started cooking and venting burned oil. Can larger fittings be bored into these standard com...
by Brian_Gage
Mon Nov 14, 2011 2:58 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Liquid Scintillation vs. Pancake GM
Replies: 24
Views: 9484

Re: Liquid Scintillation vs. Pancake GM

<t>Being new, I had a time deciphering the acronyms. Okay, PET is a polyethylene plastic, the container was 2 inches. Was that diameter? And how tall? Did you improvise with a recycled food or medicine container? What is the liquid inside this container? Why was the scintillation counter placed so m...