Alberto

Specific database queries should be addressed to Vladimir Pronyaev.

pronyaev@ippe.ru

and

sepack@obninsk.com

Alan

-----Original Message-----
From: Vladimir Pronyaev [mailto:pronyaev@ippe.ru]
Sent: Thursday, 20 October 2005 05:51
To: jean-christophe.sublet@cea.fr
Cc: TRKOV, Andrej; NICHOLS, Alan
Subject: FW: evaluations resulting from the standards evaluation process

Dear Jean Christophe,

The latest version of the standards files is attached. There can be some changes after reviewing of them by CSEWG members. We welcome also any comments from you. I think the files can be widely distributed by the IAEA after this (possibly at the November of this year).

With best regards,
Vladimir

-----Original Message-----
From: Vladimir Pronyaev [mailto:pronyaev@ippe.ru]
Sent: Friday, October 14, 2005 1:37 PM
To: A.Trkov@iaea.org
Cc: A.Nichols@iaea.org
Subject: FW: evaluations resulting from the standards evaluation process

Dear Andrej,

I  have asked Allan Carlson, as CSEWG member submit oficially the standards to the NNDC. He did this.

I think NNDC will check them and ask CSEWG members to review it. As result, some corrections could be incorporeted in the files. Then files can be disseminated more broadly.

If you (and NDS) have the possibility to look in the files and comment on the form and content it will contribute in the improving of the files before their distribution by the NDS.

Best regards,
Vladimir

-----Original Message-----
From: Allan D. Carlson [mailto:carlson@nist.gov]
Sent: Friday, October 14, 2005 2:30 AM
To: Oblozinsky, Pavel
Cc: carlson@nist.gov; larsonnm@ornl.gov; zhpchen@tsinghua.edu.cn; gai@ippe.ru; ghale@lanl.gov; HMH@theorie3.physik.uni-erlangen.de;
vonach@ap.univie.ac.at; Franz-Josef.Hambsch@cec.eu.int; badikov@ippe.obninsk.ru; tagesen@ap.univie.ac.at; syoh@kaeri.re.kr; Donald.L.Smith@anl.gov; Vladimir Pronyaev
Subject: evaluations resulting from the standards evaluation process

Pavel,
Attached are what we expect are the final results we have obtained from the combination of the R-matrix and simultaneous evaluations.  They include the 6Li (n,t), 10B(n,б), 10B(n,б1g), Au(n,g), 235U(n,f), and 238U(n,f) standards.
Also
the 238U(n,g) and 239Pu(n,f) cross sections were evaluated as a result of the evaluation process and those data are included.  Note that the thermal constants are also given (in both the 235U(n,f) and 239Pu(n,f)  files).
Vladimir checked the files with CHECKER, FIZCON and PSYCHE.  Warnings were given resulting from the incompleteness of the evaluation since we are not supplying a full evaluation.  We suggest independent checking by NNDC personnel.

Gerry is nearly finished with the new hydrogen evaluation below 20 MeV.  He will be providing an increased number of significant digits from EDA.  He expects to have the final hydrogen data within a week.

You will note that the 235U(n,f), 238U(n,f) and 239Pu(n,f) data extend to 200 MeV even though we do not have an evaluation of the hydrogen cross section above 20 MeV.  In our evaluation, we have used the experimental data on those high energy fission cross sections that were measured relative to the hydrogen standard.  We used the data as provided by the authors who converted them using different hydrogen evaluations.  The differences between those hydrogen evaluations are smaller than the uncertainties in the experimental fission data so we are providing needed high energy evaluated fission data.  As we discussed some time ago, we will convert the fission data using the new high energy (above 20 MeV) hydrogen evaluation when Gerry has finished it.  But this will be part of the nuclear data development project, "maintenance of the neutron cross section standards".  Also the 3He(n,p) evaluation work will fall into that category.

Allan

--
DR. ALLAN D. CARLSON
NAT'L INST OF STDS AND TECH
100 BUREAU DR STOP 8463
GAITHERSBURG, MD 20899-8463

Building 245, Room C308
Work phone: (301) 975-5570
FAX: (301) 975-4766 or (301) 869-7682 (FOR LARGER JOBS) Home Phone: (301) 682-4486
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