[ RadSafe ] Light water neutron absorption

[John R Johnson]

I agree. We called this the "Dombra Effect" when I worked at CRNL (now CRL)


----- Original Message ----- 
From: "Christopher W. Becker" <cwbecker at umich.edu>
To: <radsafe at radlab.nl>
Sent: Sunday, August 17, 2008 10:53 AM
Subject: RE: [ RadSafe ] Light water neutron absorption


> Also, heavy water has a gamma-neutron reaction from high energy gammas 
> which
> releases neutrons making heavy water act as a source of neutrons also.
>
> -----Original Message-----
> From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] On 
> Behalf
> Of Jaro
> Sent: Sunday, August 17, 2008 8:53 AM
> To: radsafe at radlab.nl
> Subject: RE: [ RadSafe ] Light water neutron absorption
>
>
> Because the deuterons (heavy hydrogen) in heavy water already have 
> neutrons,
> whereas ordinary (light) water hydrogen (proton) doesn't. The difference 
> is
> enormous: 0.00053 b for deuterons vs. 0.332 b for protons (thermal neutron
> abs. x-section)
>
> Jaro
> ^^^^^^^^^^^^^^^^^^^^^
>
>
>
> -----Original Message-----
> From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl]On
> Behalf Of Steven Dapra
> Sent: Saturday, August 16, 2008 11:47 PM
> To: radsafe at radlab.nl
> Subject: [ RadSafe ] Light water neutron absorption
>
>
> Aug. 16
>
> Why does light water absorb more neutrons than heavy water?
>
> Steven Dapra
>
>
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