Re[2]: H/D separation project

[Alexander Vasilyev <vassilie@mail.pnpi.spb.ru>]

Dear Claude,

Tuesday, February 21, 2006, 6:43:09 PM, you wrote:

CP> Dear Sasha,

CP> thanks for your update. It's great that action is near!

CP> Conc. your inquiry of a 10 bar pressure sensor: Malte and I remember 
CP> that there is
CP> one somewhere in our boxes, but probably with larger range than 10 bar 
CP> and no
CP> pressure display unit. So we need to know more precisely, what you need.
CP> To order a new 10 bar transmitter (0.5% precision) would be CHF 221.-, and a
CP> display unit costs an additional CHF 284.-

If the sensor is not more than for 20 bar it is OK.
We can read sensor ourselves. So, DO NOT buy display unit.
Precision is OK.

CP> Conc. our protium reserves: we have approx. 1.2 m3 in CHUPS and in the
CP> hydride storage (I believe). That's the gas which we used in 2005. In 
CP> addition,
CP> I havem a 10 liter volume filled with 55 bar protium produced freshly 
CP> last year.
CP> This seems just barely to fulfill your approximate needs. During first 
CP> half of
CP> March, we can consider to produce more protium from water by electrolysis -
CP> if necessary. But I cannot start the production right now.

CP> Conc. Shapkin & Co: What are they analysing? We cannot guess.

Shapkin & Co made the measurements of ratio ortho-/para- hydrogen by
the chromatography.  The separation column separate NOT ONLY
hydrogen/deuterium but ortho- and para- to. It is possible to
recalculate separation coefficient ortho/para to hydrogen/deuterium.
Separation coefficient ortho/para is SMALLER than for
hydrogen/deuterium. About 10% of separation ortho/para means 200 times
for hydrogen/deuterium. So, we can adjust separator on base of these
measurements. Relaxation of ortho/para in the probe volume is about
0.1% per hour. So, the relaxation is negligible. Probe volume is 0.1
cm^3.
It means we can START to work with our own  analyses. Now I push this
team to make metrology...
The idea of this analyses has been proposed by Alekseev & Co. It is
not something completely new.
I repeat, this analyses ONLY for the separator adjustment.

With best regards
Sasha.