Search found 10784 matches

by Richard Hull
Sun Jun 17, 2018 5:03 am
Forum: FAQs: Neutron - Radiation Detection
Topic: FAQ - Extensive paper on neutron activation
Replies: 12
Views: 840

Re: FAQ - Extensive paper on neutron activation

Internet content, websites and data can disappear, websites die or be re-named, data that might prove dual use, get pulled off. Assume the internet is a place loaded with material that may or may not be there again, once found long ago. Whatever is in a book is there for as long as the book exists. ...
by Richard Hull
Sun Jun 17, 2018 4:49 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Atlas of Neutron Capture Cross Sections
Replies: 3
Views: 283

Re: Atlas of Neutron Capture Cross Sections

I recently got a soft cover version for $4.00 off ABE postpaid!! There appears to be a number of more recent compilations all in paper back/soft cover. Tons of 'em!!! You can learn a lot about nuclear physics just by roaming around in these tables, assuming you have a bit of background in nuclear ph...
by Richard Hull
Sat Jun 16, 2018 5:01 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Atlas of Neutron Capture Cross Sections
Replies: 3
Views: 283

Re: Atlas of Neutron Capture Cross Sections

I tend to use the book.....

"Table of Isotopes" Lederer, Hollander, Perlman

This can be found on ABE in both hardback and paper back, large size. Contains both easy to use tables and another section with the more complex decay path diagrams and energy levels.

Richard Hull
by Richard Hull
Sat Jun 16, 2018 4:41 am
Forum: FAQs: Neutron - Radiation Detection
Topic: FAQ - Extensive paper on neutron activation
Replies: 12
Views: 840

Re: FAQ - Extensive paper on neutron activation

The physical book I referred to is "Table of Isotopes" Lederer, Hollander, Perlman. I mentioned it twice in my PDF above. There are several to chose from.

Richard Hull
by Richard Hull
Fri Jun 15, 2018 6:42 pm
Forum: FAQs: Neutron - Radiation Detection
Topic: FAQ - Extensive paper on neutron activation
Replies: 12
Views: 840

Re: FAQ - Extensive paper on neutron activation

Yes, there is something about the handiness of a real book that this old guy appreciates. Got used to getting on the bus and going downtown or to a nearby college to get data from books and books alone until the 90's. Those old tomes are now available to own for little money to make up my own techni...
by Richard Hull
Thu Jun 14, 2018 9:35 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: What about "Liquid Scintillation vs. Pancake GM"?
Replies: 5
Views: 307

Re: What about "Liquid Scintillation vs. Pancake GM"?

I actually bought the little corrigator tool listed and shown in the Dec 6 posting back then. I have used it several times in other work. However, I just never got around to working with the scintillation system George noted. Sometimes stuff that seems cool just gets dropped in the push through life...
by Richard Hull
Thu Jun 14, 2018 12:15 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: What about "Liquid Scintillation vs. Pancake GM"?
Replies: 5
Views: 307

Re: What about "Liquid Scintillation vs. Pancake GM"?

Liquid scintillation is very rare in the amateur community. Most scintillation work tends to be gamma related, although liquid scintillators tend to have a full sphere counting ability. For really weak sources, this is just perfect, provided you have little issue with dipping the radioactive source ...
by Richard Hull
Tue Jun 12, 2018 6:06 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Dysprosium activation runs planned
Replies: 6
Views: 385

Re: Dysprosium activation runs planned

One thing about all the books, they don't often go into how various impurities in the rare earth metals affect working the metal. They paint with a broad brush. It is very rare to find a rare earth metal better than 99% pure. Therein, lies the rub that gives the lie to the first sentence, "the pure ...
by Richard Hull
Tue Jun 12, 2018 5:08 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Dysprosium activation runs planned
Replies: 6
Views: 385

Re: Dysprosium activation runs planned

I received the dysprosium coins today and lashed my myself to the mast of fusor IV for 4 hours. Results below. Regarding Frank's discussions on annealing....(Solution for work hardening). Having earned good money as a custom jewelry maker working mostly in silver, gold and platinum in the 70's as a ...
by Richard Hull
Mon Jun 11, 2018 9:13 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Dysprosium activation runs planned
Replies: 6
Views: 385

Dysprosium activation runs planned

I have spent the last three days getting fusor IV up to operating levels that will allow my activation of dysprosium. I will need at least a million neuts per second isotropic, I figure. I got it up to 800,000 n/s today. I ordered two of Metallium's Dy coins and hope they will arrive soon as they sh...