[ RadSafe ] how the "Snoopy" responds to neutrons

Riel, Gordon K CIV NSWCCD W. Bethesda, 6301 gordon.riel at navy.mil
Mon Jan 22 12:58:37 CST 2007


One word answer: Yes

Short answer:  A cylindrical polyethylene moderator of about 22 lb, or
about 10 kg, slows fast neutrons so that a thermal neutron detector in
the center will count in proportion to the dose equivalent (within a
factor of four or so) for neutrons of any energy from thermal to 14 MeV.
A partial thermal neutron shield around a three inch central cylinder
helps to shape the response.

If you want more, just ask gordon.riel at navy.mil

Dr. Gordon Riel, PE, CHP
(301) 261-7735, FAX 2252
NSWCCD 6301
Bethesda, MD 20817-5700

Message: 4
Date: Mon, 22 Jan 2007 10:38:28 -0500
From: "ROMANOWICH Larry\(L\) - BRUCE POWER"
	<larry.romanowich at brucepower.com>
Subject: [ RadSafe ] The theory of a Snoopy
To: <radsafe at radlab.nl>
Message-ID:
	
<275A6966B435FD4496C52C5AFE17AF3901613BD7 at BNPDML05.corp.brucepower.com>
	
Content-Type: text/plain;	charset="us-ascii"

Hi:
	Does anyone have a good working description of how the "Snoopy"
responds to neutrons?  Thanks.

Larry Romanowich
Bruce Power
(519) 361-2673 ext 1565



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