ENSDF Status and Discussion
Libby McCutchan
National Nuclear Data Center
Brookhaven National Laboratory, NY USA
ENSDF Status
18765 datasets
(18261 in 2015)
3325 nuclides
(3261 in 2015)
ENSDF FY15 statistics
Center
Nuclides
ANL
BNL
Contractors
5
46
7
LBNL
McMaster
MSU
9
109
16
ORNL
TAMU
7
17
CNDC
13
Romania
India
5
22
Evaluated 250 nuclides,
including 13 mass chains
ENSDF FY16 statistics
Evaluated 220 nuclides, including 12 mass chains
Center
Nuclides
Adopted Levels
XUNDL
ANL
BNL
Contractor
LBNL
16
39
7
18
890
2114
515
1230
30
65
7
48
McMaster
MSU
ORNL
83.5
16
9.5
2260
1130
390
41
35
5
TAMU
TUNL
UCB
CNDC
18
7
5
12
1288
18
500
700
10
11
30
16
Mass chain Responsibility
NDS Statistics
http://journalinsights.elsevier.com/journals/0090-3752
NDS Downloads
NDS Impact Factor
New Developments
The old …
I come to this page to search,
why isn’t it the first thing I see??
Some web changes
Depending on mass region, evaluation is not good
enough and we would appreciate if there is some
way to post feedback.
Community input to evaluation schedule
ENSDF Archiving
• ENSDF now updated only once a month
• Archives available from NNDC website
• Citation guidelines discussion … later
Goodbye to Webtrend
PDF’s using JAVA-NDS
• NDS starting publishing in this format Feb 2017
• Web followed in March 2017
• Many thanks to Balraj Singh and Jun Chen
Much improved level drawings
ENSDF Supplemental
A place for data that doesn’t qualify as primary or
secondary reference
• XUNDL author correspondences
• Supplemental info from user’s
Inelastic neutron scattering
partial gamma data
Jπ=(3) in ENSDF
ENSDF Supplemental
• Folder in NNDC Dropbox account
• Updated with new supplemental information
• About ½ way through adding Balraj’s database
ENSDF Priority List
(not new but a reminder)
• Distributed Dec 2016
• Sorted by XUNDL and
by cut-off date
• Yellow=being worked on
• Green = submitted
• Yearly distribution
• Please let NNDC know
prior to selecting A chain
Topics for Discussion
Submission Guidelines
Email [email protected] the following
• ENSDF File
• PDF output from JAVA-NDS
(Note that we have eliminated the pre-review stage,
evaluations will be sent directly to reviewer)
A new submission checklist
• Per request, we have generated a submission checklist
• Please ensure evaluation conforms to all points
• Those that do not will be returned prior to sending for
review
Some things to keep in mind
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This is not an exhaustive list of everything that should be checked
in an evaluation
Simple enough that NNDC can check compliance in short time
Requires elements which are necessary to the review process
Hopefully will then allow the review process to focus on physics,
data selection, justifications, etc
NSDD center requirements
Requirement for recognition and creation of an NSDD Data Center
The individual(s) at the proposed new NSDD center are required to
demonstrate a significant understanding of the ENSDF format and
policies and have made substantial contributions to the ENSDF/XUNDL
database(s). Contributions can be in the form of a minimum of 2 mass
chain evaluations, 30 individual nuclide evaluations, or 40 compiled
papers for XUNDL. Contributions can also be demonstrated by the
development of an essential ENSDF analysis or utility code. A
presentation for the new center should be made at the NSDD meeting
when the above requirements have been fulfilled. Official recognition
of the center will follow a majority consensus among the current NSDD
centers.
NSDD center requirements
• indication/declaration that the data center activity
will be supported (not necessarily financially) by
home institute
• a commitment (in terms of FTE for example) above
a threshold
These could define not only creation of a center,
but also continued existence of a center…
ENSDF Quality Control
We have received a lot of feedback/concern of the
quality of ENSDF
Alejandro has parsed ENSDF to find obvious errors in
•
•
•
•
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Jπ assignments
Multipolarity assignments
Bands
Transition strengths
Inconsistencies in decay datasets
I send emails … you need to respond
NNDC is correcting mass chains from non-active evaluators
An ENSDF “Big Paper”
• No recent easily citable paper for
ENSDF
• ENDF has great success with their
“big papers”
• Propose we draft an ENSDF paper
• NDS obvious place for publication
An ENSDF “Big Paper” (the details)
Take guidance from ENDF big paper organization
• Potential Authors need to demonstrate understanding of
evaluation process and ENSDF policies and procedures
• 2 mass chain evaluations or essential ENSDF code development
• NNDC will begin process with draft outline
• Each author will be responsible for drafting text on a topic
• Deadlines will be very strict
ENSDF evaluators
What defines expert ?
In my opinion, we are selling ENSDF short by allowing
anyone who’s willing to work on ENSDF to do so
We should define requirements for mass chain evaluation
ENSDF evaluators
Mass chain evaluation requirements
Either
• Work one-on-one in collaboration with
experienced ENSDF evaluator (extended visit)
Or
• Begin with XUNDL compilation until expertise has
been sufficiently demonstrated
ENSDF citation guidelines
If data is taken from X or less nuclides, citation should be
to individual mass chain (or nuclide evaluations)
What should X be?
I propose 10
ENSDF citation guidelines
If greater than X
From ENSDF database as of Sept 3, 2016,
Version available at
http://www.nndc.bnl.gov/ensarchivals/
ENSDF citation guidelines
If less than X
Cite data sheets
Cite ENSDF archive