XUNDL status report (Oct. 15, 2003 to May 20, 2005)

The XUNDL database provides prompt internet access to current publications or preprints in experimental nuclear structure data (level-schemes) that are not yet available in ENSDF database. Since 2003, the database is no longer limited to high-spin papers; current low-spin papers are also being compiled. It provides convenient access to different viewers (LBNL's Isotope Explorer, Oak Ridge's RADWARE, BNL's on-line retrieval), and to the published article on journal webpages (if the user has valid internet access to the journal). The database is indexed by mass number, nuclide and reference key number. Since the start of this project in December 1998, 1520 datasets have been added to XUNDL, mostly from papers published in 1995-2005. About 420 datasets have been added since the November 2003 NSDD meeting. In addition 30 previous datasets in XUNDL have been updated for newer papers. It is estimated that almost all the high-spin papers published from1998-2005; and about 50% of the high-spin papers published from 1995-97 are included. Presently XUNDL has 1520 datasets from about 1250 primary papers covering data for about 1020 nuclides from 13N to 288115, amongst 228 A-chains (A=13 to 288). ∼90% content is high spin level schemes. As we understand, the compiled datasets in XUNDL are being used by mass-chain evaluators, which should potentially speed up the evaluation process for ENSDF. The current retrieval rate, as monitored by NNDC, is about 400/month from the NNDC website alone. There are probably other retrievals made through RADWARE and LBNL websites