X-Message-Number: 25498
From: 
Date: Sun, 9 Jan 2005 02:17:21 EST
Subject: Re: CryoNet #25485 NMR freeze

From RBR:

> I am sorry, I misspoke: of course, MRF operates on water molecules 
> (not hydrogen), which have dipole moments. By imparting rotational 
> energy to these tiny magnets, it is possible to prevent them from 
> forming lattices during freezing, which in turn prevents the 
> formation of ice crystals, and therefore substantially reduces 
> damage.
> 
> Best Regards,
> 
> Richard B. R.
> 

Here you assume that nearly each hydrogen atom is polarized, the requested 
magnetic field is near what can be found on a neutron star, 100 billions time 
what the best laboratory can do. MRI using hydrogen can polarize at best one 
atom out of one million. How that could have any effect on bulk freezing 
properties of water ? Whater is not helium 3.

Water polarization : 0. 000 1 percent
helium or xenon polarization: up to 80 percent.

Your system is hopless, sorry.

Yvan Bozzonetti.


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