Archived - First Fusion for Bob Reite

Current images of fusor efforts, components, etc. Try to continuously update from your name, a current photo using edit function. Title post with your name once only. Change image and text as needed. See first posting for details.
User avatar
Dennis P Brown
Posts: 1714
Joined: Sun May 20, 2012 2:46 pm
Real name: Dennis P Brown
Location: Glen Arm, MD

Re: First Fusion for Bob Reite

Post by Dennis P Brown » Wed Oct 22, 2014 12:56 pm

Impressive! That is a very high neutron flux.

User avatar
Richard Hull
Moderator
Posts: 11548
Joined: Fri Jun 15, 2001 1:44 pm
Real name: Richard Hull

Re: First Fusion for Bob Reite

Post by Richard Hull » Wed Oct 22, 2014 6:57 pm

Actually the word flux is not correct here. Flux is reserved for its true scientific meaning and that is the number of neutrons traversing a square centimeter of area in one second. All the numbers quoted by we fusioneers are the total isotropic (EMISSION), not flux, from the device and it fusion process per second. The total number of fusions per second is double the isotropic emission of neutrons per second.

Just trying to keep the verbage straight lest we appear a bit in the dark to more learned scientific minds reading our results. Scientific reporting needs to be precise and specific in the manner in which it is stated.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

User avatar
Rich Feldman
Posts: 1138
Joined: Mon Dec 21, 2009 11:59 pm
Real name: Rich Feldman
Location: Santa Clara County, CA, USA

Re: First Fusion for Bob Reite

Post by Rich Feldman » Wed Oct 22, 2014 9:19 pm

Hooray for Bob Reite!

Regarding Richard's most recent post, I am not one to shy away from arguments about semantic minutiae. So had to look up "neutron flux".

It would appear that Richard is right.
Yup, when the subject is free neutrons, they use the word "flux"
where most other disciplines say "flux density".
http://www.nrc.gov/reading-rm/basic-ref ... -flux.html

So flux of neutrons is contrary to flux of, say, a magnetic field. Magnetic flux (in webers or maxwells) is the total amount of lines of force emerging from a pole, or passing through an aperture. When divided by the transverse area, you get magnetic flux density, measurable (in teslas or gausses) with a sensor at some point in space.

Another example is in photometry.
Luminous flux, measured in lumens, can be the total output of a light bulb. A detector at a distance can measure luminous flux density, in candelas (lm/m^2). Also known as illuminance.

Uh oh, maybe it's not so clear cut after all.
Heat flux seems to usually be a per-unit-area quantity, with units like Btu/h/ft^2, and watts/m^2. Wikipedia is unsurprisingly sloppy and inconsistent about it.

Lesson to take home: sometimes flux is a per-area term and sometimes not. (I think more often not.)
Last edited by Rich Feldman on Thu Oct 23, 2014 5:03 pm, edited 1 time in total.
Mike echo oscar whisky! I repeat! Mike echo oscar whisky, how do you copy? Over.

User avatar
Bob Reite
Posts: 350
Joined: Mon Aug 26, 2013 1:03 am
Real name: Bob Reite
Location: Wilkes Barre/Scranton area

Re: First Fusion for Bob Reite

Post by Bob Reite » Thu Oct 23, 2014 12:12 am

I was able to edit my last post to change "flux" to "emission", which does make more sense.
The more reactive the materials, the more spectacular the failures.
The testing isn't over until the prototype is destroyed.

User avatar
Rich Feldman
Posts: 1138
Joined: Mon Dec 21, 2009 11:59 pm
Real name: Rich Feldman
Location: Santa Clara County, CA, USA

Re: First Fusion for Bob Reite

Post by Rich Feldman » Thu Oct 23, 2014 12:43 am

The presumably isotropic neutron emission from Bob's fusor is sort of like the emission from a radioactive source.
How about claiming an emission rate in Run #3 of 577 kilobecquerels (15 microcuries) of electrically stimulated activity? :-)
Mike echo oscar whisky! I repeat! Mike echo oscar whisky, how do you copy? Over.

nicolas leboucher
Posts: 14
Joined: Mon Aug 20, 2012 5:04 pm
Real name: leboucher nicolas
Location: france
Contact:

Re: Archived - First Fusion for Bob Reite

Post by nicolas leboucher » Fri Aug 25, 2017 9:11 am

hello,

I m on the way to build a fusion reactor, and i will post very soon a complete description of my project. For the time being I m still designing the key components, beginning with the deutérium générator. In france, you cannot buy deuterium, so i need to générate it.
I ve seen on an other post a picture of your generator. Can you please tell me what voltage and current you apply to the cell and which is the model of your mass flow controller ?
thanks

Post Reply