Changing Facets Of Nuclear Structure: Proceedings of the 9th International Spring Seminar on Nuclear Physics, Vico Equense, Italy, 20-24 May 2007

CONTENTS......Page 16
Organizing Committees......Page 6
Foreword......Page 8
Program......Page 10
Section 1 EXOTIC NUCLEAR STRUCTURE......Page 24
2. ISOL Technical challenges......Page 26
3. ISAC Accelerator Complex......Page 30
References......Page 35
1. Introduction......Page 36
3.1. Superconducting in-flight RIB separator BigRIPS......Page 37
3.2. BigRIPS commissioning......Page 38
3.3. Physics Programs in Phase I......Page 39
4.1. Prototypes of SLOWRI and SCRIT......Page 40
4.3. GARIS and New LINAC......Page 41
4.5. Upgrade program of RIPS......Page 42
References......Page 43
Population of Neutron Unbound States via Two-Proton Knockout Reactions N. Frank, T. Baumann, D. Bazin, A. Gade, J.-L. Lecouey, W. A. Peters, H. Scheit, A. Schiller, M. Thoennessen, J. Brown, P. A. DeYoung, J . E. Finck, J . Hinnefeld, R. Howes, and B .......Page 46
3. Results......Page 47
Acknowledgments......Page 50
References......Page 51
1. Introduction......Page 52
2.1. JYFLTRAP facility......Page 53
2.2. Mass measurements across the N=50 shell gap......Page 55
2.3. REX-ISOLDE facility......Page 57
2.4. Recentresults of experiments on neutron-rich Cu and Zn isotopes......Page 58
References......Page 60
1. Introduction......Page 62
2. The evolution of the Z=28 shell effect in nuclei with neutron numbers beyond N=40......Page 63
3. The effectiveness of the N=28 shell effect in silicon nuclei......Page 66
4. The difference between the A=36 Ca and S mirror isotopes......Page 68
References......Page 70
1. Introduction......Page 72
3. The N = 38 isotones: 70Ge and 68Zn......Page 73
4. Magnetic moments and the wave function of the mixed-symmetry states in 92994Zr.......Page 74
5. Magnetic moment measurements in a radioactive beam environment: 132Te.......Page 75
6. From ISOL to fragmentation beams: Ar and S isotopes and the sd shell.......Page 77
References......Page 78
Technique for Measuring Angular Correlations and g-Factors of Excited States with Large Multi-Detector Arrays: An Application to Neutron Rich Nuclei Produced in Spontaneous Fission A. V. Ramayya, C. Goodin, K. Li, J. K. Hwang, J . H. Hamilton, Y. X . L......Page 80
2. Theory......Page 81
3. Experiment and Analysis......Page 83
4. Summary......Page 86
References......Page 87
Isospin Symmetry and Proton Decay: Identification of the 10+ Isomer in 54Ni C. Fahlander, R. Hoischen, D. Rudolph, M. Hellstrom, S. Pietri, Zs. Podolycik, P. H. Regan, A. B. Garnsworthy, S. J. Steer, F . Becker, P. Bednarczyk, L. Caceres, P. Doornenbal......Page 88
2. Experiments......Page 89
3. Resi;ts......Page 90
4. Discussion......Page 93
5. Summary......Page 94
References......Page 95
Exploring the Evolution of the Shell Structure by Means of Deep Inelastic Reactions G. de Angelis......Page 96
2. Shell structure evolution far from stability......Page 97
3. Experiment......Page 99
5. Conclusion and Perspectives......Page 102
References......Page 103
1. Introduction......Page 104
2. Experiment......Page 105
3. Discussion......Page 107
4. Conclusion......Page 110
References......Page 111
1. Introduction......Page 112
2. The S2 correlated Hamiltonian......Page 113
3. Results......Page 116
4. Conclusion and Outlook......Page 118
1. Introduction......Page 120
2.1. The Dipole Response of Neutron-Rich Nuclei - Evidence for the Pygmy Dipole Excitation......Page 122
2.2. Investigation of Nuclear Matter Distributions of Halo Nuclei from Intermediate Energy Elastic Proton Scattering......Page 124
2.3. Gamma Spectroscopy with Fast and Stopped Radioactive Beams - Recent Results from RISING at GSI......Page 126
3. Nuclear Physics with Radioactive Beams at the Future International Facility FAIR......Page 127
References......Page 131
The SPES Direct Target Project at the Laboratori Nazionali di Legnaro G. Prete, A. Andrighetto, C. Antonucci, M. Barbui, L. Biasetto, G. Bisofi, S. Carturan, L. Celona, F. Cervellera, S. Ceuolani, F. Chines, M. Cinausero, P. Colombo, M. Comunian, G. Cu......Page 134
2. The SPES project overview......Page 135
3. Rear beam production......Page 137
4. Direct Target prototype......Page 139
5. Proton driver......Page 141
7. Conclusion......Page 142
References......Page 143
Section II NUCLEAR STRUCTURE AND NUCLEAR FORCES......Page 144
1. Introduction......Page 146
2. Quantum Chromodynamics......Page 147
3. Nuclear Effective Field Theory......Page 148
3.2. Results for the Two-Body System......Page 149
3.3. Three- and Four-body Nuclei......Page 151
4.1. Construction of Vucom......Page 152
4.2. Hartree-Foclc and Many-Body Perturbation Theory......Page 154
5. Summary and Conclusions......Page 155
References......Page 156
1. Introduction......Page 158
2. Two-nucleon density distributions in nuclei......Page 159
3. Experimental evidence for tensor correlations in nuclei......Page 161
4. Tensor forces and two-nucleon momentum distributions......Page 162
References......Page 164
1. Introduction......Page 166
3. Correlated strength in r-space......Page 172
References......Page 174
1. Introduction......Page 175
2. All-order core polarization diagrams......Page 178
3. Brown-Rho scaling and nuclear effective interactions......Page 181
References......Page 184
Ab initio and ab exitu No Core Shell Model J. P. Vary, P. Navra'til, V. G. Gueorguiev, W. E. Omnand, A . Nogga, P. Maris, and A . Shirokov......Page 185
1. Introduction......Page 186
3. Ab initio NCSM with interactions from ChPT......Page 187
2. JLab (e,e’p) experiment......Page 189
4. Ab exitu NCSM with interaction from inverse scattering......Page 191
5. Concluding remarks......Page 192
References......Page 195
1. Introduction......Page 196
2. Coupled Cluster Theory......Page 199
3. Ab-initio description of open quantum systems......Page 200
3.1. 66 results for Helium chain......Page 201
Acknowledgments......Page 204
References......Page 205
1. Introduction......Page 206
2. Symplectic Sp(3,R) Basis......Page 207
3.1. Reproduction of NCSM results in a Sp(3, W) subspace......Page 208
3.2. Large reduction of model space dimension......Page 210
4. Conclusions......Page 211
References......Page 213
1. Introduction......Page 214
2. Construction of a translationally invariant symplectic basis space......Page 215
3. Results and Discussions......Page 218
4. Conclusion......Page 220
References......Page 221
1. Physics beyond the Standard Model and the Double Beta Decay......Page 222
2.1. Problems to be solved:......Page 229
References......Page 230
1. Introduction......Page 232
2. A projected spherical single particle basis......Page 234
3. Description of the states involved in the process......Page 236
4. The Boson Expansion (BE) procedure......Page 237
5. The Gamow-Teller transition amplitude......Page 238
6. Numerical application......Page 239
7. Conclusions......Page 242
References......Page 243
1. Introduction......Page 244
2. Density-dependent effective Hamiltonians......Page 245
3. Single-particle spectra......Page 246
References......Page 250
Section III SHELL MODEL AND NUCLEAR STRUCTURE......Page 252
1. Introduction......Page 254
2. Intruder states in pshell nuclei......Page 256
3. Gamow-Teller transitions......Page 261
4. Summary......Page 263
References......Page 264
1. CI Hamiltonians for the sd-Shell......Page 266
References......Page 275
1. Introduction......Page 276
2. Outline of theoretical framework......Page 277
3. Calculations and results......Page 278
References......Page 283
Surprising Features of Simple Nuclear Systems just above 132Sn H. Mach, R. Navarro-Pe'rez. L. M. Fraile, U. Koster, B . A. Brown, A. Covello, A . Gargano, 0. Arndt, A . Blazhev, N . Boelaert, M. J. G. Borge, R. Boutami, H. Bradley, N. Braun, Z. Dlouhy,......Page 286
1. Introduction......Page 287
2. Production of molecular SnS+ ions......Page 288
4. Results for 134Sb......Page 289
5. Results for 135Sb......Page 292
References......Page 293
1. Introduction......Page 296
2.1. Potential model Vlow–k......Page 298
2.2. Potential model N3LOW......Page 299
3. Outline of calculations and Results......Page 300
References......Page 303
Shell-Model States in Neutron-Rich Ca and Ar Nuclei B. Fornal, R. Broda, W. Krdas, T. Pawlat, J . Wrzesiriski, R . V . F. Janssens, M. P. Carpenter, T. Lauritsen, D. Seweryniak, S. Zhu, N. Mcirginean, L. Corradi, G. de Angelis, F. Della Vedova, E. Fior......Page 306
1. Introduction......Page 307
2.1. 51Ca......Page 309
2.2. 46348Ar......Page 311
3. Discussion......Page 312
3.1. 51Ca......Page 313
4. Conclusion......Page 314
References......Page 315
Nuclear Structure Information from 208Pb(p, p') via Isobaric Analog Resonances in 209Bi A . Heusler, P. von Brentano, T . Faestermann, G. Graw, R. Hertenberger, J. Jolie, R. Kriicken, K. H. Maier, D. Mucher, N . Pietralla, F. Riess, V. Werner, and H.-F......Page 316
References......Page 323
2. Quark Shell Model with Diquark Pairing......Page 324
3. Additional Pairing......Page 326
5. The Quark Shell Model and Nucleon Clustering......Page 327
References......Page 328
Lifetime Measurements in 67Se and 67As Mirror Pair: A Test of Isospin Symmetry Breaking R. Orlandi, G. de Angelis, F. Della Vedova, A . Gadea, N. MGrginean, D. R. Napoli, F. Recchia, J. J. Valiente-Dobdn, F. Brandolini, E. Farnea, S. Lenzi, S. Lunardi,......Page 330
1. Introduction......Page 331
3. Results and Discussion......Page 334
References......Page 337
The 120Sn(p,t)118Sn Reaction: Level Structure of 118Sn and Microscopic DWBA Calculations P. Guazzoni, L. Zetta, A. Covello, A. Gargano, B. F. Bayman, G. Graw, R. Hertenberger, T. Faestermann, H.-F. Wirth, and M. Jaskdla......Page 338
2. Experimental Procedure and Results......Page 339
3. Cluster DWBA Calculation......Page 340
4.1. Shell model calculation......Page 341
4.2. Microscopic D WBA calculations......Page 343
5 . Summary......Page 344
References......Page 345
Section IV COLLECTIVE MODES OF NUCLEAR EXCITATION......Page 346
1. Introduction......Page 348
2.1. Electron scattering......Page 350
2.2. Coulomb excitation......Page 353
3. Discussion......Page 355
References......Page 356
1. Introduction......Page 358
2.1. Proton scattering as an experimental tool......Page 359
2.2. A high-resolution 208Pb(p, p) experiment under 0’......Page 360
3.1. Experiments......Page 361
3.2. B(E1) strength......Page 362
3.3. Systematics......Page 363
3.4. Fluctuation analysis......Page 364
4. Concluding remarks......Page 365
References......Page 366
1. Introduction: El Strength in Atomic Nuclei......Page 368
2. Results from photon scattering experiments......Page 369
3. Results from a scattering experiments......Page 371
4. The high resolution photon tagzer facility NEPTUN......Page 373
References......Page 375
Dipole-Strength Distributions up to the Giant Dipole Resonance R. Schwengner, G. Rusev, N. Benouaret, R. Beyer, F. Donau, M. Erhard, E. Grosse, A . R. Junghans, K. Kosev, J. Khg, C. Nair, N. Nankov, K. D. Schilling, and A . Wagner Deduced from Photon S......Page 378
2. Photon-scattering experiments......Page 379
3. QRPA calculations in a deformed basis......Page 382
4. Summary......Page 384
References......Page 385
1. Introduction......Page 386
2. The model for quadrupole-octupole deformation......Page 389
3. Results and comparison with experimental data......Page 390
References......Page 393
Study of the 118Sb via the 121Sb(p,t)119Sb Reaction P. Guazzoni, L. Zetta, V. Yu. Ponomarev, G. Graw, R. Hertenberger, T. Faestermann, H.-F. Wirth, and M. Jasko'la......Page 394
2. Experimental Results......Page 395
3. Theoretical analysis......Page 397
4. Summary......Page 400
References......Page 401
1. Introduction......Page 402
2. Model, Analysis of Data, and Discussions3......Page 404
References......Page 408
Even- and Odd-Parity Bands in 108,110,112Ru and Odd-Parity Doublets in losMo J. H. Hamilton, S. J. Zhu, Y. X . Luo, J. 0. Rasrnussen, A . V. Ramayya, J. K . Hwang, X . L. Che, Z. Jang, C. Goodin, P. M. Gore, E. F. Jones, K. Li, S. Frauendorf, V. Dimitr......Page 410
2. Even parity bands in 108,110,112Ru......Page 411
3. Negative parity doublet bar.xz- - Chiral doublets......Page 412
4. Acknowledgments......Page 416
References......Page 417
1. Introduction......Page 418
2. Results and Analysis......Page 421
3. Summary......Page 422
4. Acknowledgements......Page 423
References......Page 424
1. Introduction......Page 426
1.1. The order-to-chaos transition in the warm rotating nucleus......Page 427
1.2. Quantum tunneling of the excited superdeformed band......Page 430
References......Page 433
1. Introduction......Page 434
2. Formalism......Page 435
3. The Selection Rule of E2 Transition Rates and the Variable Moments of Inertia......Page 437
4. Conclusion......Page 440
References......Page 441
1. Introduction......Page 442
2. RPA in the rotating frame......Page 443
3. Calculations and results......Page 444
Acknowledgments......Page 448
References......Page 449
1. Introduction......Page 450
2. The correlation entropy as a measure of the complexity of high-lying single particle mode......Page 451
3. Microscopic Description of mixed-symmetry states in nearly spherical nuclei......Page 454
4. Pygmy Resonances......Page 455
References......Page 457
1. Introduction......Page 460
2. Calculation scheme and Skyrme forces......Page 461
3. Results and discussion......Page 463
References......Page 466
1. Introduction......Page 468
2. Themethod......Page 469
4. Conclusions......Page 472
References......Page 474
1. Introduction......Page 476
2. The QPM study......Page 477
2.1. Numerical results......Page 478
3. Conclusion......Page 482
References......Page 483
1. Introduction......Page 484
2. Brief outline of the method......Page 485
3. A numerical illustrative application of the method for l60......Page 487
4. Conclusions......Page 489
References......Page 491
1. Introduction......Page 492
2. Application of Thermofield Dynamics to Quantum Number-Projected Free Energy......Page 493
3. Approximation of Entropy and Peierls Inequality......Page 495
4. Particle Number-Projected BCS-Type Equation and Superfluid-to-Normal Phase Transition......Page 496
5. Conclusion......Page 498
References......Page 499
1. Introduction......Page 500
2. Outline of MBCS theory......Page 501
4. PAV-MBCS theory......Page 503
5. Numerical analysis......Page 504
References......Page 507
2. Outline of the approach......Page 508
3. Physical interpretation......Page 511
4. The effective action of composite bosons......Page 512
5. The effective action of composite bosons plus quasipart icles......Page 514
References......Page 516
1. Introduction......Page 518
2. Basic equations......Page 519
3. Constant-A approximation and static limit......Page 520
4. Dynamics......Page 521
5. One-dimensional systems......Page 522
6. Conclusions......Page 524
References......Page 525
1. Introduction......Page 526
2.2. Renormalized Lipkin-Nogami gap equations......Page 528
2.3. SCQRPA equations......Page 530
3.1. Ground-state energy......Page 531
3.2. Energies of excited state......Page 532
References......Page 533
Section V SPECIAL TOPICS......Page 534
1. Introduction......Page 536
2. Finite size effects and the complement correction......Page 537
3. Coulomb correction......Page 541
4. Physical picture......Page 542
5. Infinite nuclear matter......Page 543
References......Page 544
1. Introduction......Page 546
2. Experimental Procedure......Page 548
3. Results and Discussion......Page 551
References......Page 553
The Coulomb Dissociation of 8B in the Coulomb Field and the Validity of the CD Method M. Gai......Page 554
1. Introduction......Page 555
2. The Slope of SIT Above 300 keV......Page 556
3. S17(0) Extracted From CD Data......Page 558
4. Extrapolating Slv(0) From World Data......Page 559
References......Page 560
1. Introduction......Page 562
2. Reactions with a composite object: a model study......Page 563
3.1. Structure......Page 566
3.2. Reactions and Unitarity......Page 567
3.3. The He example......Page 568
References......Page 569
1. Introduction......Page 570
2. Atomic nuclei in the pf-shell......Page 572
3. Spectral statistics of baryons......Page 574
4. Time series approach to quantum chaos......Page 575
5 . Conclusions......Page 579
References......Page 580
List of Participants......Page 582
Author Index......Page 592