On 02/10/2014 10:15 PM, GastonP wrote:
> Did any of you try with good old Thorium?
> I have been playing with some gas lamp mantles, the retail item that
> contains more Thorium, and they emit a very happy dose of alpha and beta
> particles. Way more than what you get from uranium marbles.
Mig
Did any of you try with good old Thorium?
I have been playing with some gas lamp mantles, the retail item that
contains more Thorium, and they emit a very happy dose of alpha and beta
particles. Way more than what you get from uranium marbles.
On Monday, February 10, 2014 12:27:44 PM UTC-3, Neon
Just an idea, what about an old watch/clock face with glow-in-the-dark
paint on it?
I have an old (ww2 german aircraft) clock that I took to work to check on a
geiger counter.
My boss insisted I take it straight back home after seeing if showing 100
counts-per-second.
I think the radioactivity f
On 02/10/2014 09:32 AM, Tidak Ada wrote:
> But Ra228 will be more efficient in this case, for it is a ß-radiator.
> However, it only has an half life of 69 months.
Actually no. Ra-226 in equilibrium with its decay chain is an
"everything emitter". It was widely used in tubes such as radar T/R
On 02/10/2014 09:30 AM, Kent Stevens wrote:
> Could Americium-241 be used from an old smoke detector since it emits both
> Alpha and low level Gamma?
I haven't tried it but I would expect it to work fine. The alpha
particles should slam into the glass and generate enough Bremsstrahlung
X-rays
: [neonixie-l] Re: Interesting document on Krypton-doped
nixies,,,
> Some time ago I was playing with XC18s (bought a large number many years
ago when they were very cheap) - they have a similar problem so I
experimented with uranium marbles and UV LEDs...
>
> I wasn't very "
@googlegroups.com
Subject: Re: [neonixie-l] Re: Interesting document on Krypton-doped
nixies,,,
> Hivac used to add a little to some of their tubes - I learned this 40
years ago from one of their R&D engineers. Actually I wasn't sure if it was
Kr85 or Radon, but radon has a short
Could Americium-241 be used from an old smoke detector since it emits both
Alpha and low level Gamma?
Kent Stevens
> On Feb 10, 2014, at 6:45 AM, NeonJohn wrote:
>
> Those UV LEDs generate a LOT of UV. I use one as a color tester for my
> neon shop (most colors of neon tubing look white when
> Some time ago I was playing with XC18s (bought a large number many years ago
> when they were very cheap) - they have a similar problem so I experimented
> with uranium marbles and UV LEDs...
>
> I wasn't very "quantitative", but from a qualitative standpoint, the marbles
> made no difference
> Hivac used to add a little to some of their tubes - I learned this 40 years
> ago from one of their R&D engineers. Actually I wasn't sure if it was Kr85 or
> Radon, but radon has a shorter half life.
Somehow I doubt it was radon, which has a half-life on the order of 4 days.
Kr85 has a half
Those UV LEDs generate a LOT of UV. I use one as a color tester for my
neon shop (most colors of neon tubing look white when off). Glad you
didn't hurt your eyes. Problem is, the glass is opaque to UV.
If you don't mind spending the money you can reactivate the tubes. One
can buy a microcurie
neonixie-l@googlegroups.com
Subject: [neonixie-l] Re: Interesting document on Krypton-doped nixies,,,
Some time ago I was playing with XC18s (bought a large number many years ago
when they were very cheap) - they have a similar problem so I experimented
with uranium marbles and UV LEDs...
I w
Some time ago I was playing with XC18s (bought a large number many years
ago when they were very cheap) - they have a similar problem so I
experimented with uranium marbles and UV LEDs...
I wasn't very "quantitative", but from a qualitative standpoint, the
marbles made no difference and at that
Hivac used to add a little to some of their tubes - I learned this 40 years
ago from one of their R&D engineers. Actually I wasn't sure if it was Kr85
or Radon, but radon has a shorter half life.
As a practical matter, when I made my trigger clock with over a hundred
Hivac XC17 trigger tubes, s
Interesting... so if we happen to break about 750 nixie tubes in the same
normal size room, we should have absorbed the equivalent of one week
occupationally allowed radiation dose.
They don't say anything on how to feel or what to do if we happen to do
that now ;)
Gastón
On Thursday, February
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