Re: pinhole helium

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From: NFetter@aol.com
Date: Tue Sep 28 1999 - 22:02:18 PDT 

From: NFetter@aol.com
Message-ID: <9952e3db.2522f75a@aol.com>
Date: Wed, 29 Sep 1999 01:02:18 EDT
Subject: Re:  pinhole helium

Hi David,
Helium occurs in natural gas deposits as a result of alpha particle formation
from radioactive decay. Heliun boils at a much lower temperature than the
constituents of natural gas, so it is separated by fractional distillation of
the mixture. If you freeze the natural gas, only helium is left as a gas.
Neil Fetter

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