#05 September 23, 1997 _/ _/ _/ _/_/_/_/ _/_/_/_/ _/_/ _/_/ _/_/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/_/_/_/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/_/_/_/ _/_/_/_/ ATOMIC MASS DATA CENTER ------------------------------------------------------------ I - GENERAL INFORMATION Please see the general information given in bulletin #01. II - NEWS FROM EXPERIMENTS ON MASSES The MISTRAL Experiment / M. de Saint Simon Sep 97 In April 1997, the MISTRAL spectrometer was tested in Orsay. Several checks of the systematic errors have given encouraging results. A precision of 10^{-7} seems to be achievable when not limitated by statistics. The spectrometer was then transported to CERN and installed in the new extension of the ISOLDE Experiemental Area. The beam trajectory has been set up again using the internal ion source. In August, a first test with the ISOLDE stable beam allowed to inject the beam through the spectrometer with a transmission of 0.5%. An update of the acquisition software is under way and tests with stable and radioactive beams will continue. The first mass measurement run with radioactive beam is expected for November. Complementary information is given in two recent MISTRAL status reports, available from the AMDC as files mistral02.txt(ascii) and mistral03.txt(ascii). III - NUBASE The first version of the NUBASE evaluation of nuclear and decay properties has just been sent (August 31st) to Nuclear Physics. Due to an excellent co-operation with this journal, NUBASE is planned to appear in vol. 624, with cover date September 29, 1997! One of the four authors (J.B.) has already spent one month in Brookhaven to feedback some of the results of this evaluation into the ENSDF. NUBASE has been set up by G.Audi, O.Bersillon, J.Blachot and A.H.Wapstra. It contains experimentaly known nuclear properties, and some that have been estimated from extrapolation, for 3010 nuclides in ground-state, 669 of them in first and 58 in second isomeric states: mass, isomeric excitation energy, half-life, spin, parity, decay modes and intensities. The cut-off date for the data from literature used in the Nubase'97 evaluation was December 31, 1996. Some post cut-off date works, available before August 31, 1997, were also included, but only in remarks to the relevant data. To receive a reprint of the NUBASE paper, please send your exact postal address to: audi@csnsm.in2p3.fr An electronic (ascii) file for the NUBASE table, for use with computer programs, will soon be distributed by the AMDC. To allow stable reference data for calculations, this file will NOT be updated (for updates, see below). IV - DISPLAYS OF NUBASE Two programs have been written to display the contents of NUBASE in a user friendly environment. 1 - For PC computers, the program NUCLEUS has been further developed and integrates now an "Educational" display. The later has been written in collaboration with the Palais de la decouverte, Paris, to be used for the "Centenial of the Radioactivity" exhibition. NUCLEUS can be downloaded from the AMDC as explained in file nucleus.status (ascii). 2 - Directly from the AMDC Web: jvNubase is a JAVA applet that can be run from JAVA compatible browsers. Both display programs will be updated regularly to allow the AMDC user to check for the latest available information in NUBASE. V - LIST OF DOCUMENTS RECENTLY ADDED TO THE AMDC ** GENERAL document.list List of documents and files in AMDC amdc.news05 AMDC bulletin #5 (this bulletin) ** EXPERIMENTAL mistral02.txt MISTRAL status report #2 mistral03.txt MISTRAL status report #3 ** NUBASE AND NUCLEUS nuclimage Images from NUCLEUS (directory) nubase.status Status of the NUBASE evaluation nucleus.status Status of the NUCLEUS program VI - HOW TO RETRIEVE FILES FROM THE AMDC To retrieve one or more of the documents or files available on AMDC, connect to the AMDC by anonymous-ftp. Example: ftp csnftp.in2p3.fr user: anonymous password: your electronic address cd pub cd AMDC (please type AMDC in capitals) get document.list get mass_rmd.mas95 quit "document.list" is the comprehensive list of documents and files available from AMDC. World-Wide-Web access: http://csnwww.in2p3.fr/amdc/ The present bulletin is sent electronically to the AMDC mailing-list 2 to 4 times per year. If you wish to subscribe or unsubscribe, please send an email to: audi@csnsm.in2p3.fr VII - ADDRESS Address: Atomic Mass Data Center C.S.N.S.M. (IN2P3-CNRS) Batiment 108 91405 Orsay campus (France) Telephone: +33 1 6915 5223 Telefax: +33 1 6915 5268 E-mail: audi@csnsm.in2p3.fr WWW: http://csnwww.in2p3.fr/