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Re: moisture versus oxygen ?
- To: Bernhard Lauss <lauss@berkeley.edu>
- Subject: Re: moisture versus oxygen ?
- From: Malte Hildebrandt <malte.hildebrandt@psi.ch>
- Date: Fri, 5 May 2006 08:26:13 +0200 (CEST)
- Cc: Peter Kammel <kammel@npl.uiuc.edu>, run10 -- Tom Banks <tbanks@socrates.Berkeley.EDU>, Steve Clayton <smclayto@uiuc.edu>, Tim Gorringe <gorringe@pa.uky.edu>, Fred Gray <fegray@socrates.Berkeley.EDU>, David Hertzog <hertzog@uiuc.edu>, Brendan Kiburg <kiburg@npl.uiuc.edu>, Sara Knaack <sknaack@uiuc.edu>, Berhard Lauss <lauss@socrates.Berkeley.EDU>, Marat Vznuzdaev <marat@mail.pnpi.spb.ru>, Francoise Mulhauser <Francoise.Mulhauser@psi.ch>, Claude Petitjean <Claude.Petitjean@psi.ch>, "R. Prieels" <prieels@fynu.ucl.ac.be>, Peter Winter <peter.winter@psi.ch>
- In-reply-to: <Pine.SOL.4.56.0605031833250.24306@socrates.Berkeley.EDU>
- References: <Pine.LNX.4.63.0603221517230.28410@one.npl.uiuc.edu><Pine.SOL.4.56.0605031833250.24306@socrates.Berkeley.EDU>
Dear Bernhard,
> Our TPC-hydrogen vessel has cathodes and anodes on high
> voltages, which is the typical model of a highly sophisticated
> electrolysis cell (sorry Malte).
You are right - I already applied for a patent... ;-)
But all jokes apart - I spoke to a chemist from the fuel cell group and he
was not really convinced by this explanation - but they are more working
on bringing hydrogen and oxygen together instead of separating them...
Anyway we can check this as you proposed.
Best regards, Malte
On Wed, 3 May 2006, Bernhard Lauss wrote:
>
>
> Dear friends,
>
> here is one thought which might help in the solution of our
> humidity versus oxygen interpretation problem.
> It is rather vague, please feel free to dispose it
> right away, if there is an argument I am not aware of.
>
>
> Our TPC-hydrogen vessel has cathodes and anodes on high
> voltages, which is the typical model of a highly sophisticated
> electrolysis cell (sorry Malte).
> So an H2O molecule which gets close to the anodes will dissociate
> leaving a free oxygen atom (or an O-H molecule).
> Now at room temperature oxygen atoms need a catalyzer to recombine
> with hydrogen, meaning the recombination is at least very slow,
> even in a pure hydrogen atmosphere.
>
> Our Pura moisture detector / dew point transmitter
> is only sensitive to moisture and not to dissociated oxygen.
>
> Hence, we see more oxygen events in the impurity finder
> than expected from the moisture measurement.
>
>
> Can we test this hypothesis by running (after the data run)
> with the high voltages on and off and check if there is
> a change in the humidity reading ?
>
>
> Thanks for your comments
>
> Bernhard
>
>
>
> *******************************************************************
> Bernhard Lauss E-Mail: lauss@socrates.berkeley.edu
> Physics Department
> 366 LeConte Hall
> University of California @ Berkeley
> Berkeley, CA 94720 Tel: (510)-642 4057
> United States Fax: (510)-642 9811
> *******************************************************************
>
>
--
======================================================================
Malte Hildebrandt
Paul Scherrer Institut
OLGA / 019
CH - 5232 Villigen PSI
Switzerland
Telefon: +41 56 310 2145
e-mail: malte.hildebrandt@psi.ch
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