[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Japan to switch to MOX?OX?X?X?OX?





Pu-240 and Pu-242 have neutron absorption cross-sections of >1000 barns as 
do 239 and 241. Pu-238 is in the 500 to 1000 range (540 if I'm reading my 
Chart of the Nuclides correctly).

Dwayne Gardner
dwayne.gardner@po.state.ct.us
 ----------
From: radsafe@romulus.ehs.uiuc.edu
Subject:   Re: Japan to switch to MOX?OX?
Date: Thursday, January 23, 1997 6:57PM


Received: from po.state.ct.us (po.state.ct.us [159.247.0.199]) by
aviion.dep.state.ct.us (8.8.4/8.7.3) with SMTP id SAA01406; Thu, 23 Jan 1997
18:55:10 GMT
Received: from postoffice.cso.uiuc.edu (postoffice.cso.uiuc.edu
[128.174.5.11]) by po.state.ct.us (8.6.12/8.6.9) with ESMTP id SAA17056; 
Thu,
23 Jan 1997 18:58:23 -0500
Received: from romulus.ehs.uiuc.edu (romulus.ehs.uiuc.edu [128.174.74.24]) 
by
postoffice.cso.uiuc.edu (8.6.12/8.6.12) with SMTP id RAA269064; Thu, 23 Jan
1997 17:57:11 -0600
Received: from localhost by romulus.ehs.uiuc.edu (NX5.67d/NeXT-2.0)
     id AA03016; Thu, 23 Jan 97 17:57:10 -0600
Date: Thu, 23 Jan 97 17:57:10 -0600
Message-Id: <9700248541.AA854132092@MGDESTMX01.ERIN.GOV.AU>
Errors-To: melissa@romulus.ehs.uiuc.edu
Reply-To: radsafe@romulus.ehs.uiuc.edu
Originator: radsafe@romulus.ehs.uiuc.edu
Sender: radsafe@romulus.ehs.uiuc.edu
Precedence: bulk
From: azapantis@mgdestmx01.erin.gov.au
To: Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
Subject: Re[2]: Japan to switch to MOX?
X-Listserver-Version: 6.0 -- UNIX ListServer by Anastasios Kotsikonas
X-Comment:  Radiation Safety Distribution List

Correct, ie that is NOT true. Pu-239 and 241 are fissile. Pu-238 is not. I'm
not
sure about the other Pu isotopes but I suspect that they are also not 
fissile.
Can anybody give a definitive answer?
____________________________________________________________________________  
___
_
Subject: Re: Japan to switch to MOX?
From:    radsafe@romulus.ehs.uiuc.edu at mgdestmx01
Date:    23/1/97  5:21 PM

Erik C. Nielsen wrote:
 For the full
> story, see http://www.merc.com/stories/cgi/story.cgi?id=1208803-116

Another statement in the full story is: "Japan had about 4.7 tonnes of
plutonium at the end of 1993, of which some 3.4 tonnes are likely to be
fissile, according to latest government figures available."

I was told that ALL isotopes of plutonium are fissile.  Is that not
true?  Al Tschaeche xat@inel.gov

Alex Zapantis
Environmental Radiation Officer
Office of the Supervising Scientist          
40 Blackall Street 
                                                                      
Barton ACT 2600 AUSTRALIA

Email: azapantis@mgdestmx01.erin.gov.au
Fax : (int+) 61 6 274 1519
Phone: (int+) 61 6 274 1642

The Office of the Supervising Scientist is a Branch of the
         Federal Environment Protection Group

..