Search found 1339 matches

by Jon Rosenstiel
Thu Nov 23, 2017 7:44 pm
Forum: Images du Jour
Topic: Daniel Klasing Neutron Club Application
Replies: 13
Views: 710

Re: Daniel Klasing Neutron Club Application

Daniel,
Below is what I normally see when using a bubble detector. Compared to the images of your BTI's note that the bubbles are smaller in size and are fairly evenly distributed throughout the detector's volume.
BTI.jpg
Jon Rosenstiel
by Jon Rosenstiel
Tue Nov 14, 2017 11:42 pm
Forum: New User Chat Area
Topic: CANBERRA SERIES 35 MCA STARTUP PROBLEM 2017
Replies: 5
Views: 510

Re: CANBERRA SERIES 35 MCA STARTUP PROBLEM 2017

Dropbox link to Canberra Series 35 Plus schematics.

https://www.dropbox.com/sh/fw75vox8xnoy ... _Ds-a?dl=0

Jon Rosenstiel
by Jon Rosenstiel
Mon Nov 06, 2017 2:06 am
Forum: Images du Jour
Topic: HEAS 2017 - post all images here!
Replies: 34
Views: 2150

Re: HEAS 2017 - post all images here!

As a 15-year old in the mid 1950's I remember my dad asking me: "Do you know what LSMFT means"? My answer was: "Lucky Strike Means Fine Tobacco"? Dad answered: "No, it means Lord, Save Me From Truman".

Jon Rosenstiel
by Jon Rosenstiel
Fri Aug 25, 2017 7:20 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: High purity Germanium detector design related clarifications
Replies: 17
Views: 1269

Re: High purity Germanium detector design related clarificat

I believe the purpose of the holes are to reduce leakage current. Below is a pic of an Ortec item. Ortec also uses a triangular support bracket similar to the plastic one in Ashish's detector, but it appears to be made from G10 or maybe G11 fiberglass laminate material, but without the holes. 2017-0...
by Jon Rosenstiel
Thu Mar 23, 2017 5:40 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Dysprosium Activation?
Replies: 19
Views: 1736

Re: Dysprosium Activation?

Garrett, The chunk I used was 123 grams. Dy 005a.jpg Don't know about beta emission as I didn't try facing it up to a GM counter. How long do you have to wait between runs? If it's not too long just keep hitting it as hard and as fast as you can. Dy-165's 2.3-hour half-life does give you a little wi...
by Jon Rosenstiel
Thu Mar 23, 2017 2:53 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Dysprosium Activation?
Replies: 19
Views: 1736

Re: Dysprosium Activation?

Garrett,

Yes, 20 minutes in the neutron oven at 4.0E+06 TIER.
Dysprosium.jpg
Jon Rosenstiel
by Jon Rosenstiel
Thu Mar 09, 2017 12:11 am
Forum: Announcements and Site Administration Topics
Topic: Unconfirmed Record Neutron Production
Replies: 6
Views: 980

Re: Unconfirmed Record Neutron Production

Richard, check out Garrett's spreadsheet, I just finished posting a bunch of runs... even managed to break my old record.

Jon Rosenstiel
by Jon Rosenstiel
Thu Mar 09, 2017 12:01 am
Forum: Announcements and Site Administration Topics
Topic: Fusion Results Data Collection
Replies: 9
Views: 1374

Re: Fusion Results Data Collection

I just unleashed a whole slew of fusor runs on Garrett's spreadsheet. 40 thru 80 kV in 10 kV increments with 10, 15, and 20 mA grid current at each increment. Don't know why, but my fusor really fell flat at 80 kV, 10 mA. Anyway, it was a lot of fun putting the ol' fusor (first neutrons in 2002) thr...
by Jon Rosenstiel
Sat Feb 18, 2017 9:47 pm
Forum: Fusion --- Past, Present, and Future
Topic: Shine - a real use for fusion, now!
Replies: 21
Views: 3293

Re: Shine - a real use for fusion, now!

I had a go at this back in 2007. (Note that images are now in reverse order)

viewtopic.php?f=13&t=5817

Jon Rosenstiel
by Jon Rosenstiel
Mon Jan 23, 2017 9:05 pm
Forum: Vacuum Technology (& FAQs)
Topic: MKS connector
Replies: 7
Views: 1023

Re: MKS connector

Roberto,

Binder? (HQ in Germany)
https://www.binder-usa.com/

Jon Rosenstiel