Shapes and Symmetries in Nuclei: from Experiment to Theory <br> (SSNET Workshop)

7 nov. 2016, 08:30 → 11 nov. 2016, 15:30 Europe/Paris

Costel Petrache (CSNSM, Université Paris Sud and CNRS/IN2P3), Jerzy Dudek (IPHC and Universite de Strasbourg)

The SSNET'16 Workshop, hosted by the Centre de Sciences Nucléaires et Sciences de la Matière (CSNSM) in Orsay, was held at the I2BC auditorium on the CNRS campus in Gif-sur-Yvette, France, from November 7^th to the 11^th, 2016.

The workshop aims at strengthening the international collaboration between the nuclear structure physicists from France, Europe and other laboratories all around the world. It has allowed fruitful discussions on recent experimental and theoretical aspects of nuclear structure related to the manifestation and description of the various shapes and geometrical symmetries of the nucleus as well as other symmetries and symmetry breaking.

Recent results obtained from various detection systems like AGATA, JUROGAM, EAGLE, GALILEO, GAMMASPHERE, GRETINA, GRIFFIN, TIGRESS, EURICA, INGA, AFRODITE have been presented, as well as the most recent theoretical advances and their applications. The intention of the workshop is to give an impulse to the studies of exotic modes of excitation in nuclei using new detector setups for gamma-rays and associated ancillaries.

The program consisted of plenary presentations by invited speakers and contributions selected from submitted abstracts, as well as a poster session, on the following topics:

•    Experimental studies of spherical and deformed ground and excited states
•    New facilities
•    Methods and instrumentation
•    Theoretical models for exotic collective excitations
•    Theoretical models for exotic symmetries and uncertainties of modelling methods

 

Organizing committee: Alain Astier, Isabelle Deloncle, Karl Hauschild, Amel Korichi, Araceli Lopez-Martens, Costel Petrache (chair), Jerzy Dudek (co-chair)

Conference secretary: Émilie Bonnardel

 

Book of Abstracts SSNET_Booklet.pdf

Circular-1 SSNET-circular-1.pdf

Circular-2 SSNET-circular_2.pdf

Map_Access_Gif-campus plan_campus_Gif_1.pdf

Poster SSNET16_poster.jpg

lundi 7 novembre

08:30 → 09:00 Registration

09:00 → 09:30 Opening session

Président de session: Prof. Costel Petrache (CSNSM, Université Paris-Saclay)

09:00 Welcome

Orateurs: M. Bertrand Minault (DR4 CNRS, Gif-sur-Yvette), Dr Jean-Antoine Scarpaci (CSNSM Orsay), Prof. Étienne Augé (Université Paris-Saclay)

09:20 Welcome

Orateur: Prof. Jerzy Dudek (IPHC and Université de Strasbourg)

09:30 → 10:45 Experiment 1

Président de session: Prof. Costel Petrache (CSNSM, Université Paris-Saclay)

09:30 High-K isomers in exotic nuclei

Orateur: Prof. Philip Walker (University of Surrey)

Transparents 108_K_isomers_SSNET_7nov16.pdf

09:55 The evolution of shapes and collectivity with increasing angular momentum

Orateur: Prof. Mark Riley (Florida State University)

Slides Riley_SSNET_Nov_2016_10_posted_opt.pdf

10:20 Transition rate measurements at extremes of shape coexistence

Orateur: Dr Tuomas Grahn (University of Jyväskylä)

Transparents Grahn_SSNET2016.pdf

10:45 → 11:00 Coffee break

11:00 → 12:30 Experiment 2

Président de session: Dr Augusto Macchiavelli (Lawrence Berkeley National Laboratory)

11:00 Structure of neutron-rich nuclei in the vicinity of 78Ni: The case of N=51 nuclei and of Ge and Zn isotopes

Orateur: Dr Gilbert Duchêne (IPHC Strasbourg)

11:25 Shape coexistence at the 40 sub-shell closures

Orateur: Dr Emmanuel Clément (GANIL)

Transparents clement-SSNET2016.pdf

11:50 Shapes and Symmetries in Nuclei studied with GRETINA

Orateur: Dr Heather Crawford (Lawrence Berkeley National Laboratory)

Transparents Talk-Crawford.pdf

12:15 Spectroscopy of neutron-rich 96Y isotope produced in fission induced by cold neutrons

Orateur: Dr Lukasz Iskra (Institute of Nuclear Physics PAN, Krakow)

Transparents SSNET_Iskra.pdf

12:30 → 14:00 Lunch

14:00 → 16:55 Theory 1: Nuclear Structure from Microscopic Perspective

Président de session: Prof. Dario Vretenar (University of Zagreb)

14:00 A symmetry-conserving configuration mixing description of odd and even exotic nuclei with the Gogny force

Orateur: Prof. J. Luis Egido (Universidad Autónoma de Madrid)

Transparents SSNET_Egido_Web.pdf

14:25 Beyond-mean-field calculations based on time-reversal-invariance-breaking HFB states - prospects and perspectives

Orateur: Dr Michael Bender (CENBG)

Transparents bender_ssnet_161107.pdf

14:50 Exotic shapes and exotic symmetries

Orateur: Prof. Jozsef Cseh (MTA ATOMKI)

Transparents cseh_orsay.pdf

15:15 Octupole deformation in the nuclear chart based on the 3D Skyrme-Hartree-Fock plus BCS model

Orateur: Dr Shuichiro Ebata (Nuclear Reaction Data Centre, Hokkaido University)

Transparents SSNET_SEbata161107.pdf

15:40 When odd nuclei break symmetry of the mean field

Orateur: Dr Sophie Péru (CEA/DAM/DIF)

Transparents SSNET2016_peru_online.pdf

16:05 Stability for the wobbling motion in the tri-axially deformed odd-A nucleus

Orateur: Prof. Kosai Tanabe (Saitama University)

Transparents Tanabe_Stability.pdf

16:30 Isoscalar pairing and pairs in nuclei

Orateur: Dr Piet Van Isacker (GANIL)

Transparents isacker_ssnet16.pdf

16:55 → 17:15 Coffee break

17:15 → 19:20 Theory 2: Fields, Symmetries and Related

Président de session: Prof. J. Luis Egido (Universidad Autónoma de Madrid)

17:15 Coexistence of nuclear shapes: self-consistent mean-field and beyond

Orateur: Prof. Dario Vretenar (University of Zagreb)

Transparents DV_SSNET.pdf

17:40 Nuclear shapes in covariant density functional theory: recent results

Orateur: Prof. Anatoli Afanasjev (Mississippi State University)

Transparents Afanasjev-SSNET-16-webpage.pdf

18:05 Isospin symmetry and its breaking in atomic nuclei

Orateur: Prof. Wojciech Satula (University of Warsaw)

Transparents SSNET_Satula_16.pdf

18:30 Geometric symmetries in light nuclei

Orateur: Dr Roelof Bijker (ICN-UNAM, Mexico)

Transparents Bijker_SSNET.pdf

18:55 Periodic-orbit bifurcations and dynamical symmetry restorations in exotic-shape nuclear mean fields

Orateur: Dr Ken-ichiro Arita (Nagoya Institute of Technology)

Transparents SSNET_arita.pdf

19:20 → 21:30 Welcome cocktail

mardi 8 novembre

09:00 → 10:45 Experiment 3

Président de session: Prof. Mark Riley (Florida State University)

09:00 Studies of shape coexistence at TRIUMF-ISAC

Orateur: Dr Adam Garnsworthy (TRIUMF)

Slides Garnsworthy.pdf

09:25 MINIBALL - Status and perspectives of the nuclear structure experiments at ISOLDE

Orateur: Prof. Peter Reiter (University of Cologne)

Slides Reiter_PR_2016_final.pdf

09:50 The study of neutron-rich nuclei at HRIBF – lessons learned

Orateur: Dr Alfredo Galindo-Uribarri (ORNL)

Slides ORSAY_110816_v1_public.pdf

10:15 Studies of super-deformed states in atomic nuclei using the Coulomb excitation method

Orateur: Dr Katarzyna Hadynska-Klek (LNL - INFN)

Slides Hadynska.pdf

10:30 Back-bending in the pear shaped 223Th nucleus

Orateur: M. Guillaume Maquart (IPNL, Lyon)

Slides Maquart.pdf

10:45 → 11:00 Coffee break

11:00 → 12:40 Experiment 4

Président de session: Prof. Gerda Neyens (KU Leuven - IKS)

11:00 Simple nuclear systems around the doubly magic 132Sn studied via fast-timing measurements

Orateur: Prof. Luis Fraile (University Complutense Madrid)

Slides Fraile.pdf

11:25 Beta-NMR/NQR studies of the neutron-rich Al isotopes at the border of the island of inversion

Orateur: Mlle Hanne Heylen (Max-Plank-Institut fur Kernphysik, Heidelberg)

Slides Heylen.pdf

11:50 Resonance ionization spectroscopy of actinium isotopes in a supersonic gas jet

Orateur: Dr Rafael Ferrer (KU Leuven - IKS)

12:15 Shapes and collectivity in neutron-deficient Pb nuclei

Orateur: Dr Janne Pakarinen (University of Jyväskylä)

Slides SSNET2016_Pakarinen_public.pdf

12:40 → 14:00 Lunch

14:00 → 16:45 Theory 3: Nuclear Structure from Various Perspectives

Président de session: Dr Piet Van Isacker (GANIL)

14:00 The dangers of statistical tests of nuclear structure models

Orateur: Prof. Richard Casten (Yale University)

Slides CASTEN_SSNET.pdf

14:25 Reliability of information in nuclear databases through comprehensive tests: The example of beta decay

Orateur: Dr Xavier Mougeot (CEA / LIST / LNHB)

Slides Mougeot.pdf

14:50 Theoretical description of E0, E1, E2 and M1 giant resonances

Orateur: Prof. Jan Kvasil (Charles University, Prague)

Transparents kvasil_Paris-16m.pdf

15:15 Partial dynamical symmetries and prolate-oblate coexistence in nuclei

Orateur: Prof. Amiram Leviatan (Hebrew University, Jerusalem)

Transparents Leviatan.pdf

15:40 Multipole modes within the finite amplitude method and application to the nuclear photo absorption cross section

Orateur: Dr Markus Kortelainen (University of Jyväskylä)

Slides Kortelainen.pdf

16:05 Dynamical description of the Poincaré and Jacobi shape transitions in nuclei: Rotation induced symmetry breaking phenomena

Orateur: Dr Katarzyna Mazurek (Institute of Nuclear Physics PAN, Krakow)

Slides Mazurek.pdf

16:30 Mathematical modeling of the nuclear mean-field: The Woods-Saxon potential as a test case

Orateur: Mlle Irene Dedes (IPHC Strasbourg)

Slides Dedes.pdf

16:45 → 17:05 Coffee break

17:05 → 19:25 Theory 4: Microscopic, Shell Model, and Collective Model Approaches

Président de session: Prof. Wojciech Satula (University of Warsaw)

17:05 Shell evolution, shape transition and shape coexistence with realistic nuclear forces

Orateur: Prof. Takaharu Otsuka (University of Tokyo)

Slides Otsuka.pdf

17:30 Model Stability From Shell Far

Orateur: Dr Frederic Nowacki (IPHC Strasbourg)

Slides ssnet-Nowacki.pdf

17:55 Effectively truncated large-scale shell model calculations and nuclei around 100Sn

Orateur: Dr Angela Gargano (INFN-Napoli)

Slides Gargano.pdf

18:20 Description of nuclear phenomena associated with the emergence of broken symmetries from an ab initio perspective

Orateur: Dr Thomas Duguet (CEA/Saclay/SPhN)

Slides duguet_csnsm.pptx

18:45 Shape coexistence, isospin symmetry, and stellar weak processes within beyond-mean-field approach

Orateur: Prof. Alexandrina Petrovici (NIPNE-HH, Bucharest)

Slides Petrovici-web.pdf

19:10 Multipole modes of deformed superfluid nuclei with the finite amplitude method in three-dimensional coordinate space

Orateur: Dr Kouhei Washiyama (University of Tsukuba)

Slides washiyama-web.pdf

19:25 → 21:30 Poster session - Cocktail

mercredi 9 novembre

09:00 → 10:40 Experiment 5

Président de session: Prof. Bo Cederwall (KTH Stockholm)

09:00 Laser spectroscopy as a tool to study shapes and symmetries

Orateur: Prof. Gerda Neyens (KU Leuven - IKS)

Slides GN-2016-SSNET-2016.pdf

09:25 The GRIFFIN facility for decay spectroscopy experiments at TRIUMF

Orateur: Prof. Corina Andreoiu (Simon Fraser University)

Slides Andreoiu-Talk-Paris-SSNET_short.pdf

09:50 Recent highlights and future projects at RIBF

Orateur: Prof. Hiroyoshi Sakurai (RIKEN, University of Tokyo)

Slides Sakurai-public.pdf

10:15 Nuclear structure with NUSTAR at GSI and FAIR

Orateur: Dr Jürgen Gerl (GSI Darmstadt)

Slides Gerl.pdf

10:40 → 11:00 Coffee break

11:00 → 12:40 Experiment 6

Président de session: Prof. Peter Reiter (University of Cologne)

11:00 Low-lying nuclear shape evolution from the dysprosium valence maximum to gamma-soft neutron-rich Osmium isotopes

Orateur: Prof. Patrick Regan (University of Surrey &amp; NPL)

11:25 Shape evolution of hot rotating nuclei observed via the GDR gamma-decay

Orateur: Prof. Adam Maj (IFJ PAN, Krakow)

Slides Maj_SSNET_2016.pdf

11:50 Measuring entry distributions with and unfolding spectra from tracking detector arrays

Orateur: Dr Torben Lauritsen (ANL)

Slides Lauritsen-2016_SSNET.pdf

12:15 Fission product prompt gamma-ray spectrometer, a new instrument for the ILL

Orateur: Dr Caterina Michelagnoli (ILL Grenoble)

Slides Michelagnoli_FIPPS_SSNET2016.pdf

12:40 → 14:00 Lunch

14:00 → 22:00 Social program

Transfer to Paris (by bus);
"Bateau mouche" excursion;
Social dinner;
Bus to Gif-sur-Yvette

jeudi 10 novembre

09:00 → 10:40 Experiment 7

Président de session: Prof. Ashok Kumar Jain (Indian Institute of Technology Roorkee)

09:00 Detail studies of Holstein-Primakoff boson representation applied to the particle-rotor model

Orateur: Dr Kazuko Sugawara-Tanabe (RIKEN)

Slides Kazuko.pdf

09:25 Lifetime measurements with GRETINA at NSCL - magnetic response of halo nuclei

Orateur: Dr Hiro Iwasaki (NSCL/MSU)

Slides Iwasaki.pdf

09:50 Lifetimes of nuclear states in proton-emitting nuclei from Differential Plunger measurements

Orateur: Dr David Cullen (University of Manchester)

Slides Cullen.pdf

10:15 Neutron-proton correlation phenomena in the heaviest Tz=0 nuclei

Orateur: Prof. Bo Cederwall (KTH Stockholm)

Slides Cederwall.pdf

10:40 → 11:00 Coffee break

11:00 → 12:30 Experiment 8

Président de session: Dr Julian Srebrny (University of Warsaw)

11:00 Recent results in the 100Sn region

Orateur: Dr Magdalena Gorska (GSI Darmstadt)

Transparents SSNET_gorska_2016_2.pdf

11:25 On the structure of 32Mg*

Orateur: Dr Augusto Macchiavelli (Lawrence Berkeley National Laboratory)

Slides SSNET16-Macchiavelli.pdf

11:50 Measurement of prompt gamma-rays from neutron induced fission of 235U

Orateur: Dr Hiroyuki Makii (JAEA, Tokai)

Slides Makii-SSNET_HM_JAEA2.pdf

12:15 The role of non-axial shapes in neutron-rich Ba isotopes

Orateur: Dr AJ Mitchell (Australian National University)

Slides Mitchell.pdf

12:30 → 14:00 Lunch

14:00 → 16:40 Theory 5: Extremes - Fission and Particle-Emission, High-Spins...

Président de session: Dr Richard Casten (Yale University)

14:00 Fourier description of exotic shapes of deformed and fissioning nuclei

Orateur: Prof. Krzysztof Pomorski (Maria Curie Sklodowska University, Lublin)

Slides Pomorski.pdf

14:25 Pre-scission shapes of fissioning nuclei

Orateur: Dr Michal Warda (Maria Curie Sklodowska University, Lublin)

Slides Warda.pdf

14:50 Microscopic neutron emission and fission rates in compound nuclei

Orateur: Dr Junchen Pei (Peking University)

Slides Pei1.pdf

15:15 Shape coexistence and band terminations in the I~60 spin range

Orateur: Prof. Ingemar Ragnarsson (Lund University)

Slides Ragnarsson_ssnet.pdf

15:40 Proton and heavier charged particles emission half-lives within a Gamow-like model

Orateur: Mlle Anna Zdeb (Maria Curie Sklodowska University, Lublin)

Slides Zdeb.pdf

15:55 Nuclear shapes and excitations in the microscopically-guided algebraic theory

Orateur: Dr Kosuke Nomura (University of Zagreb)

Slides Nomura.pdf

16:10 A self-consistent equation of motion multi-phonon method for even mass nuclei

Orateur: Dr Frantisek Knapp (Charles University, Prague)

Slides Knapp.pdf

16:25 A new self-consistent multi-phonon approach to odd nuclei and its application to the A=17 isobars

Orateur: Dr Giovanni De Gregorio (University of Naples "Federico II")

Slides DeGregorio.pdf

16:40 → 17:00 Coffee break

17:00 → 18:30 Theory 6: Shapes, Symmetries, Symmetry Breaking - Various View-Points

Président de session: Prof. Ingemar Ragnarsson (Lund University)

17:00 Chiral basis for particle-rotor model for odd-odd triaxial nuclei

Orateur: Prof. Krzysztof Starosta (Simon Fraser University)

Slides Starosta.pdf

17:25 Collective Hamiltonian based on density functional for chiral mode

Orateur: Prof. Jie Meng (Peking University)

Transparents Paris_MENG.pdf

17:50 Pushing high-spin calculation to the extreme: Application of the Pfaffian algorithm in angular momentum projection

Orateur: Prof. Yang Sun (Shanghai Jiaotong University)

Transparents SSNET_YSun.pdf

18:15 Parameter-free solutions of the Bohr model with modified shape phase space

Orateur: Dr Radu Budaca (NIPNE-HH, Magurele)

Slides Budaca.pdf

vendredi 11 novembre

09:00 → 10:40 Experiment 9

Président de session: Prof. Jie Meng (Peking University)

09:00 Magnetic dipole moment of chiral band-head in 128Cs

Orateur: Dr Ernest Grodner (University of Warsaw)

Slides GRODNER_gfactor2PDF.pdf

09:25 Chiral symmetry in the Tl isotopes

Orateur: Dr Elena Lawrie (iThemba LABS)

Slides Lawrie-Chirality190_EAL_web.pdf

09:50 Rotational features of triaxial nuclei

Orateur: Prof. Rudrajyoti Palit (TIFR, Mumbai)

Slides ssnet_rpalit_2016_web.pdf

10:15 Description of triaxial band structures in 133La

Orateur: Dr Qibo Chen (Peking University)

Slides Chen.pdf

10:40 → 11:00 Coffee break

11:00 → 12:40 Experiment 10

Président de session: Prof. Philip Walker (University of Surrey)

11:00 Recent results from EURICA at RIBF: Decay spectroscopy of 172Dy and 70Co

Orateur: Dr Hiroshi Watanabe (Beihang University / RIKEN)

Transparents SSNET_Watanabe.pdf

11:25 Nuclear isomers: What we learn from Tin to Tin

Orateur: Prof. Ashok Kumar Jain (Indian Institute of Technology Roorkee)

Slides AKJAIN_SSNET_11112016.pdf

11:50 Variety of shapes and a complex shape coexistence in 187Tl

Orateur: Dr Gregory Lane (Australian National University)

Slides Lane.pdf

12:15 First Coulomb excitation measurement with SPIDER and GALILEO at LNL

Orateur: M. Marco Rocchini (Università degli Studi di Firenze)

Slides Rocchini.pdf

12:40 → 14:00 Lunch

14:00 → 15:15 Experiment 11

Président de session: Prof. Costel Petrache (CSNSM, Université Paris-Saclay)

14:00 Experimental study of the excited bands in 160Yb: Theoretical context of exotic shape-coexistence

Orateur: M. Arunabha Saha (VECC Kolkata)

Transparents SSNET-talk_Yb160_ARUNABHA.pdf

14:15 Breaking of axial symmetry in excited heavy nuclei as identified by experimental data

Orateur: Prof. Eckart Grosse (TU Dresden)

Slides GrosseSSNET16.pdf

14:30 Lifetime measurement in the even-even neutron-rich molybdenum isotopes with the PresPEC-AGATA setup

Orateur: Dr Damian Ralet (CSNSM Orsay)

Slides Ralet.pdf

14:45 Lifetimes of the first 2+ and the first 4+ states of 148Ce and its B4/2 ratio from EXILL&FATIMA experiment

Orateur: M. Pavlos Koseoglou (IKP TU-Darmstadt, GSI)

Slides Koseoglou.pdf

15:00 Collectivity in neutron rich nuclei above 132Sn core

Orateur: Dr Houda Naïdja (Constantine 1 University)

15:15 → 15:20 Closing