RE: Decay properties change at temperature extremes?

["Langenegger, Armin" <alang@allsaintshealthcare.org>]

Hello Bob,

There was a physics today article a few years back that showed polarization
of beta decay at ultra low temps, that is the directions of the ejected beta
was in preferential directions as I recall.

Try going to the www.aip.org <http://www.aip.org>  web site and searching
the archives of physics today for the article.

Armin Langenegger MS DABMP


		-----Original Message-----
		From:	Zoon, Robert (OD) [mailto:razoon@exchange.nih.gov]
		Sent:	Monday, November 15, 1999 9:53 AM
		To:	Multiple recipients of list
		Subject:	Decay properties change at temperature
extremes?

		Dear Radsafer's:

		One of our scientists has posed the question below and I
said that, although I
		believe the answer is no from everything I have been taught
about radioactive
		decay, I would try to see if any research has been done in
this area:

		The question is:  Is there any change in the decay
properties of alpha or beta
		emitters at extremes of temperature, either high or low?
His specific range of
		interest was 0 - 500 degrees Kelvin.  I wouldn't expect any
change at 500 K,
		which is only about 227 degrees C.  However, a lot of
strange things happen as
		materials approach absolute zero.

		Any help would be greatly appreciated, even a contact at a
university or
		research laboratory.

		Bob Zoon
		Radiation Safety Officer, NIH
		301-496-2254

	
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