If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #1221
Joined: Wed Jan 09 2008, 06:17PM
Location: Odense, Denmark
Posts: 196
heres the blog
Acording to this danish (sorry) article (that is also where I found the link to the blog), the swedish say that he did not have enough material to endanger anybody, and that they failed to measure any signs of activity outside his building.
So why arrest him if he does not cause danger to anybody
From what I gather the 96% sulfuric acid was much nastier than the radioactive stuff.
Registered Member #3781
Joined: Sat Mar 26 2011, 02:25AM
Location:
Posts: 701
GluD wrote ...
heres the blog
Acording to this danish (sorry) article (that is also where I found the link to the blog), the swedish say that he did not have enough material to endanger anybody, and that they failed to measure any signs of activity outside his building.
So why arrest him if he does not cause danger to anybody
From what I gather the 96% sulfuric acid was much nastier than the radioactive stuff.
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
Yeah, doesen't bode well for us amateur fusioneers.
"OMG its RADIOACTIVE"... Yes, so is potassium. You don't go putting bananas in lead boxes do you.
In fact, even a well built fusor running in a moderately good (i.e. refrigerator + ebay turbopump) vacuum isn't likely to put out more than maybe 10 neutrons a minute. Yes X-rays can be a concern which is why if you know what you are doing, you have a dosimeter, Geiger AND a wearable dosimeter and send it off every month to get its accumulated readings documented. If nothing else it makes interesting research, as people's radiation exposure can change with altitude and location. Case in point, A place over here has approx 2* normal background as measured by my Bull Electrical meter.
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
Conundrum wrote ...
In fact, even a well built fusor running in a moderately good (i.e. refrigerator + ebay turbopump) vacuum isn't likely to put out more than maybe 10 neutrons a minute.
I'm pretty certain some amateurs have got up to ~10^8 neutrons/second, and 10^6 isn't uncommon. These are still pretty low dose rates, when you take into account the inverse square law and the fact that most fusor runs are only a few minutes long, due to grid heating, etc., though.
EDIT: And these tend to have some sheilding as well, but this is mainly required for the X-rays.
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.