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- since 1996 -
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Technical Discussions
Jörg Neubert
Jörg Neubert
07:15 Oct-01-2002
sound velocity of Tritium

For a level measuring in a vessel I need the sound velocity of Tritium in advance of deploying such an equipment. Does anyone know about it? Kindest regards
Joerg Neubert


 
 Reply 
 
CuriousMan
CuriousMan
03:48 Oct-01-2002
Re: sound velocity of Tritium
Tritium?! Are you making a watch, or a nuclear bomb? :)

: For a level measuring in a vessel I need the sound velocity of Tritium in advance of deploying such an equipment. Does anyone know about it? Kindest regards
: Joerg Neubert
.



 
 Reply 
 
Kris Smestad
Kris Smestad
08:56 Oct-02-2002
Re: sound velocity of Tritium
You can determine the velocity of any material if you have a known thickness of it.


: For a level measuring in a vessel I need the sound velocity of Tritium in advance of deploying such an equipment. Does anyone know about it? Kindest regards
: Joerg Neubert
.



 
 Reply 
 
fredy ornath
Manager
Materials System, Israel, Joined Nov 1998, 2

fredy ornath

Manager
Materials System,
Israel,
Joined Nov 1998
2
02:22 Oct-02-2002
Re: sound velocity of Tritium
Joerg,

Tritium is the heaviest isotope of hydrogen. You could expect its sound speed to be between those of hydrogen and helium. Do you have it in liquid or gas form?


 
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Joerg Neubert
Joerg Neubert
05:12 Oct-16-2002
Re: sound velocity of Tritium
: Tritium?! Are you making a watch, or a nuclear bomb? :)
.
: : For a level measuring in a vessel I need the sound velocity of Tritium in advance of deploying such an equipment. Does anyone know about it? Kindest regards
: : Joerg Neubert
: .
.Hi Joe,
I was not very exact about my question because I am not that familiar with these
processes despite of working in the nuclear branch. I am really looking for the sound
velocity of D2O (Deuterium) which is transformed if the plant is working into Tritium.
No one so far can tell my the speed. D2O`s density is 10% higher than water.
So I hope they will not look for me as a terrorist...

Joerg



 
 Reply 
 
Robert Paynter
R & D,
U of Oxford, United Kingdom, Joined Jun 2001, 14

Robert Paynter

R & D,
U of Oxford,
United Kingdom,
Joined Jun 2001
14
07:08 Oct-16-2002
Re: sound velocity of Tritium
: : Tritium?! Are you making a watch, or a nuclear bomb? :)
: .
: : : For a level measuring in a vessel I need the sound velocity of Tritium in advance of deploying such an equipment. Does anyone know about it? Kindest regards
: : : Joerg Neubert
: : .
: .Hi Joe,
: I was not very exact about my question because I am not that familiar with these
: processes despite of working in the nuclear branch. I am really looking for the sound
: velocity of D2O (Deuterium) which is transformed if the plant is working into Tritium.
: No one so far can tell my the speed. D2O`s density is 10% higher than water.
: So I hope they will not look for me as a terrorist...
.
: Joerg
.

Velocity of sound is related to density and compressibility (or elastic modulus) as in most substances. As a first guess I would assume that the compressibility of D20 will be much the same as water; you say D20 is 10% more dense then velocity then the velocity will be 5% less:

c=1/sqrt(rho*beta), rho=density, beta=compressibility

I found a page on the web:
http://w3.ualg.pt/~jarod/geral/bibliote/phywe/1_5_12.pdf
which reminds me of the peculiar behaviour of water and, I assume, deuterium - it's very temperature dependent and over the range 20-80 celsius varies greater than 5%. My predictions based on this:
c(D20)=1400,1450,1475,1475 m/s at: 20,40,60,80 celsius
(there's a peak between 60 & 80)

There's a start - further accuracy will require you to "research"

Good luck,

Robert


 
 Reply 
 
IceClampers
IceClampers
00:37 Oct-19-2002
Re: sound velocity of Tritium
Set up an immersion probe. Measure the distance of D20 between the probe and reflecting surface. Adjust your screen so you have at least two back reflections and set up the actual distance of probe to backwall on screen. Eg; if 4" then set up a 10" screen and position one backwall @ 4" and the second @ 8".

Now your sceeen display is set up for D20 velocity. If you measure the tickness of a sample of known velocity you can set a ratio btween the velocities and determine the D20 velocity from this.

Hope this helps.


 
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