Nuclear Data Center Network Who are we? What can we do for you?

  • Published on
    11-Jan-2016

  • View
    41

  • Download
    1

Embed Size (px)

DESCRIPTION

Nuclear Data Center Network Who are we? What can we do for you?. Victoria McLane 1,3 Naohiko Otuka 2,3 1 National Nuclear Data Center Brookhaven National Laboratory 2 Nuclear Data Center Japan Atomic Energy Research Institute 3 Nuclear Theory Group Hokkaido University. - PowerPoint PPT Presentation

Transcript

  • Nuclear Data Center NetworkWho are we?What can we do for you?Victoria McLane1,3Naohiko Otuka2,31National Nuclear Data Center Brookhaven National Laboratory2Nuclear Data Center Japan Atomic Energy Research Institute3Nuclear Theory GroupHokkaido UniversityRecent Advances in Astrophysics and Planetary Science, March 1-2, 2005, Sapporo, Japan

  • Nuclear Data for AstrophysicsNuclear data required for studies of:Early universe Big Bang,Stellar physics:novae, supernovae, Red giants,Interstellar medium.

  • Nuclear Data for AstrophysicsCodes for modeling these systems require massive amounts of nuclear dataReaction rates.Energy released in nuclear reactions.Structural properties of relevant nuclei.

  • Nuclear Data for AstrophysicsReaction rate: vCross section times ion velocity averaged over Maxwell-Bolzmann distribution of relative ion velocity.Basic data are cross sections and resonance parameters.

  • Nuclear Data for AstrophysicsFor many unstable nuclear no cross section data exist!Calculations rely on data from theoretical models.Experimental reaction data are used for refinement of theoretical models.

  • Nuclear Data for AstrophysicsReaction ratesCoughlin and Fowler - 1967 [1]NACRE [2]T. Raucher and F.-K. Thielemann [3]Goriely et al.Many othershttp://www.nucastrodata.org

  • Nuclear Data for AstrophysicsEnergy released in nuclear reactionsReaction Q-valuesAudi, Wapstra, Thibault [4]

    http://www.nndc.bnl.gov/amdc/

  • Nuclear Data for AstrophysicsStructural properties of nucleiDecay lifetime,Branching ratios,Separation energies: 1- and 2-particle,Level densities,Resonance parameters.http://www.nndc.bnl.gov/nudat2/

  • Nuclear Data for Astrophysics

  • Nuclear Data for AstrophysicsG.R. Coughlin and W.A. Fowler, At. Data & Nucl. Data Tables, 40 (1988) 283C. Angulo et al., Nucl. Phys. A 656 (1999) 3.T. Raucher and F.-K. Thielemann, At. Data & Nucl. Data Tables 79 (2001) 47-64.A.H. Wapstra, G. Audi, and C. Thibault, Nucl. Phys. A 729 (2003): part I, page 129; part II, page 337.

  • Nuclear Data for AstrophysicsStellar nucleosynthesis:Hydrogen burning.Helium burning.Silicon burning.Each involve the need for data on many nuclear reactions.

  • Alpha-Induced ReactionsReactions involving alpha particles are important in the helium burning stage of stars, novae, and supernovae.They involve light to medium weight nuclei, up to Z=32, and center-of-mass energies up to about 20 MeV.

  • Alpha-Induced ReactionsBuildup of 56Ni in supernovae depends critically on the (,) and (,p) reactions on -nuclei, the heaviest stable nuclide of them being 40Ca. For more massive radioactive - nuclei, 44Ti, 48Cr, 52Fe, and 56Ni, we must rely heavily on calculations, since there are few measurements.

  • Alpha-Induced ReactionsA key element in our understanding of -induced reactions is the -nucleus potential.Most wide used potentials are McFadden-Satchler [1] and Arthur-Young [2].Both are global potentials, i.e., expected to perform for a large number of nuclei, but perhaps not suitable for accurate calculations.

  • Alpha-Induced ReactionsNNDC and CNPD, Sarov, along with ORNL, have been involved in a project to compile and evaluate alpha-induced nuclear reaction data.Objective: to derive alpha-nucleus potentials for use in model calculations.

  • Alpha-Induced ReactionsCompilation of data completed.Evaluation of data.Calculations using the code Empire [3] for both potentials and the code NON-SMOKER [4].

  • Alpha-Induced Reactions1st phase of project is nearing completion [5].All data will be made available to the community.

  • Alpha-Induced ReactionsL. McFadden and G.R. Satchler, Nucl. Phys. 84,177 (1966).E.D. Arthur and P.G. Young, LA-8626 [ENDF-304], Los Alamos National Laboratory (1980).M. Herman, paper presented at Nuclear Data for Science & Technology, Sep. 26 Oct. 1, 2004, Santa Fe, NM, USA, to be published.T. Rauscher, F.K. Thielemann, At. Data & Nucl. Data Tables 75, 1 (2000).

  • Alpha-Induced ReactionsPapers presented at Nuclear Data for Science & Technology, Sep. 26 Oct. 1, 2004, Santa Fe, NM, USA, to be published.S.A.Dunaeva et al., paper 459.A.G. Zvenigorodski et al., paper 460.

  • Nuclear Data for AstrophysicsTo explain occurrence of heavy elementsEvolving from existing Fe group:s-processr-processrp-process

  • Nuclear Data for Astrophysicss-process: slow sequence of neutron absorption(Red giant)

    Z,A Z,A+1 Z,A+2 - Z+1,A+1 Z+1,A+2 Knowledge of (n,) cross sections 1 to 100 keV.

  • Nuclear Data for Astrophysicsr-process: rapid sequence of neutron absorption(supernova explosion)?Z,A Z,A+1 Z,A+2 Z,A+3 neutron drip line -

    rp-process: rapid sequence of proton absorptionZ,A Z+1,A+1 Z+2,A+2 Z+3,A+3 proton drip line +

  • Nuclear Data for AstrophysicsThese involve very many nuclear reactions.Needed from nuclear data community:Basic measured data where possible.Calculations where measurements not feasible.Evaluations of cross section data.

  • Who Are We?Nuclear Reaction Data CentersCoordinated by IAEA NDS.Cooperate on compilation, exchange, and dissemination of nuclear reaction data.All data are available on the World Wide Web, free of charge.

  • Who Are We?Member centers:Provide higher quality service at lower cost by:avoiding duplication of compilation effort,adopting common formats and procedures,sharing programming resources. Provide customer services covering wide range of nuclear data.

  • Who Are We?More than 50 years experience in nuclear data! 1952: BNL Neutron Cross Section Compilation Group 1st edition of BNL-325 published in 19551961: Sigma Center founded in U.S. at BNL. SCISRS: 1st computerized database of experimental nuclear reaction data established in 1964.

  • Who Are We?1966: 4-Center Network created.Coordinated compilation of neutron reaction data on an international scale.EXFOR adopted as official exchange format of 4-Center Network. 1975: Charged-Particle and Photonuclear Data Center Network formed.

  • Who Are We?1979: Nuclear Reaction Data Center Network created. Merger of 4-Center Network and Charged-Particle and Photonuclear Data Network.

  • Who Are We?Currently, 13 members centers.Core centers: provide complete servicesNNDC: US National Nuclear Data CenterNDS: IAEA Nuclear Data SectionNEADB: NEA Data Bank.

  • Who Are We?CHINAChina Nuclear Data Center, China Institute of Atomic Energy, BeijingHUNGARY Cyclotron Applications Department, ATOMKI, DebrecenJAPANJapan Atomic Energy Research Institute, TokaiJapan Charged Particle Reaction Data Group, HokkaidoKOREANuclear Data Evaluation Laboratory, Korea Atomic Energy Research Institute, Taejon

  • Who Are We?RUSSIACenter for Nuclear Data (CJD), ObninskCenter for Atomic & Nuclear Data, Kurchatov Institute, MoscowCenter for Photonuclear Experiments Data, Moscow State University Nuclear Physics Data CenterCenter for Nuclear Physics Data, Russia Federal Nuclear Center VNIIEF, SarovUKRAINEUkrainian Nuclear Data Center, SC Institute for Nuclear Research, Kiev

  • What Can We Do for You?Core centers provide easy access to:Neutron, charged-particle, and photonuclear reaction data.Nuclear structure and decay data. Both experimental and evaluated.

  • What Can We Do for You?EXFOR/CSISRSExperimental Nuclear Reaction DataData for incident projectiles 1 GeV.New: Data for incident projectiles >1 GeV.Fundamental particles reactions.

  • What Can We Do for You?EXFOR/CSISRSReferences linked to abstracts for several journals.Links to evaluated data.3 levels of retrieval: Basic, Extended, ExpertComplete set of help file (dictionaries)

  • What Can We Do for You?EXFOR/CSISRSData output:EXFOR or CFOR formats.Additional output formats will be developed for users as needs arise. Plots.

  • What Can We Do for You?ENDFEvaluated Nuclear Reaction DataData output:as ENDF- formatted files, plots:for multiple libraries;with experimental data;user has some control over format.

  • 6Li(n,t)4He experimental cross section data plotted with ENDF/B-VI curve using ZVView.

  • What Can We Do for You?NUDATNuclear Structure and Decay DataLevel properties,Decay modes,Radiations. Output:Tables Plots.

  • What Can We Do for You?Bibliographic DatabaseNuclear Science References (NSR)Publications in low and intermediate energy nuclear physics (includes nuclear astrophysics).Data may be retrieved by author, nuclide, reaction,particle, subject, and other criteria.Links provided to experimental and evaluated nuclear structure and decay data.Links are provided to abstracts for several journals.

  • Additional ServicesNational Nuclear Data CenterNuclear Structure and Decay DataPublication of Nuclear Data Sheets.Nuclear Wallet Cards.

    EMPIRE Code maintenance.

  • Additional ServicesNuclear Energy Agency Data BankComputer Program ServicesCollection and distribution of computer programs relevant to nuclear applications.CD-Rom distributionJANIS: evaluated and experimental data

  • Additional ServicesIAEA Nuclear Data SectionFENDL library for fusion applications.IAEA Photonuclear Data Library.Reference Input Parameter Library (RIPL)for theoretical calculations of nuclear reaction cross sections.Atomic and Molecular DataEvaluation and dissemination of atomic and molecular data for fusion and other plasma science & technology applications.

  • Core centers

    US National Nuclear Data CenterBrookhaven National Laboratory http://www.nndc.bnl.govservices@bnl.gov

    OECD-NEA Data BankIssy-les-Moulineaux, France http://www.nea.frnea@nea.fr

    IAEA Nuclear Data SectionVienna, Austriahttp://www-nds.iaea.orgservices@iaeand.iaea.org

  • US National Nuclear Data Center

  • Japanese CentersJapan Atomic Energy Research Institute Nuclear Data Center, Tokai-murahttp://wwwndc.tokai.jaeri.go.jp/katakura@ndc.tokai.jaeri.go.jp

    Japan Charged-Particle Nuclear Reaction Data Group Hokkaido University, Sapporohttp://www.jcprg.org/kato@nucl.sci.hokudai.ac.jp

  • Japan Charged-Particle Reaction Group

  • Nuclear Reaction Data CentersPlease contact usandlet us knowwhat we can do for you!

  • AcknowledgementsThank you to:Michael Smith of Oak Ridge National Laboratory for contributing information on uses of nuclear data in astrophysics.http://www.phy.ornl.gov/astrophysics/

    Goddard Space Flight Center, NASA for supernova clip.http://legacy.gsfc.nasa.gov/docs/snr.html