Dynamical aspects of nuclear fission: proceedings of the 6th International Conference, Smolenice Castle, Slovak Republic : 2-6 October 2006

FUSION·FISSION......Page 10
DANF 2006 Conference Committee......Page 6
Preface......Page 8
1. Introduction......Page 14
2. Sudden-approximation formula for the multiplicity of scission neutrons......Page 15
3. The eigenvalue problem of the single-particle hamiltonian for arbitrary-shape nuclei solved on a grid of cylindrical coordinates......Page 16
4. Results and conclusions......Page 18
References......Page 20
New Clues on Fission Dynamics from Systems ofIntermediate Fissility E. Vardaci et al.......Page 21
1. Introduction......Page 22
2. Dissipation in systems of intermediate fissility......Page 24
3. The 87rLP apparatus......Page 25
4.1. Fission Channel......Page 26
4.2. Evaporation Residues Channel......Page 30
5. Discussion and Conclusions......Page 31
References......Page 33
Dynamics of Capture Quasifission and Fusion-Fission Competition L. Stuttge et al.......Page 35
1. Introduction......Page 36
2.1. The scission fragments......Page 37
2.2. The scission times......Page 38
2.3. The neutron information......Page 40
3.1. Entrance channel effects......Page 45
3.2. Y information......Page 47
References......Page 48
The Processes of Fusion-Fission and Quasi-Fission of Superheavy Nuclei M.G. Itkis et al.......Page 49
1. Introduction......Page 50
2.1. Reactions with 48Ca-projectiles......Page 51
2.2. Reactions with 208Pb target......Page 53
2.4. Shell effects manifestation......Page 55
2.5. Transition/rom 48Ca to s8Fe_ions......Page 57
2.6. Reactions with 58 Fe and MNi-Ions......Page 59
3. Capture and fusion-fission cross section......Page 60
4.1. Bimodalfission Of256No and 250No......Page 62
5. Conclusions......Page 64
References......Page 65
1. Introduction......Page 67
2. Experiment......Page 68
3.1. Mass-energy distributions of the binary reaction productsfor the 44Ca+206Pb and 64Ni+186W......Page 69
3.2. Mass-angular distributions......Page 72
3.4. Fusion probability for the 44Ca+206Pb and 64Ni+186W......Page 74
4. Summary......Page 75
References......Page 76
1. Introduction......Page 77
2. Experiment......Page 79
3.1. Mass-energy distributions of the binary reaction products for the 58Fe+208Pb and 26Mg+248Cm......Page 82
3.2. Bimodalfission Of166Hs and 174Hs......Page 86
3.3. Neutron and gamma-ray emission......Page 89
References......Page 93
1. Introduction......Page 95
2. Coupled-Channels Approach......Page 97
References......Page 106
1. Introduction......Page 107
2. Adiabatic potential energy......Page 108
2.1. Two-core model......Page 109
2.2. Clusterization and shape-isomeric states......Page 111
2.3. Orientations effects......Page 112
3.1. Equations of motion......Page 114
3.2. Friction forces and nuclear viscosity......Page 116
3.3. Decay of primary fragments and cross sections......Page 117
4. Deep inelastic scattering......Page 118
5. Quasi-fission and SHE formation......Page 120
References......Page 124
1. Introduction......Page 125
2.1. Diabatic potential energy......Page 126
2.2. Adiabatic potential energy......Page 129
3. Collective dynamics of fusion-fission......Page 132
4. Conclusions......Page 134
References......Page 136
EXOTIC MODES......Page 11
1.Introduction......Page 137
2. Nuclear shells......Page 140
3. Adiabatic dynamics of heavy nuclear system......Page 142
4. Deep inelastic scattering of heavy nuclei......Page 144
5. Low-energy collisions of transactinide nuclei......Page 148
References......Page 154
1. Introduction......Page 156
2. Theoretical model......Page 157
3.1. Axially symmetric shapes......Page 159
3.2. Axially asymmetric shapes......Page 162
References......Page 166
1. Introduction......Page 168
2. Fusion process......Page 169
2.1. Model......Page 170
2.2. Neutron emission during fusion-fission process......Page 171
3. Survival process......Page 174
References......Page 179
1. Introduction......Page 180
3. Experimental results and discussion......Page 182
Acknowledgments......Page 190
References......Page 191
1. Introduction......Page 192
2. Effect of nuclear periphery on nucleon transfer in peripheral collisions......Page 193
3. Production of cold fragments in nucleus-nucleus collisions in the Fermi-energy domain......Page 194
4. EURISOL......Page 195
5. Production of neutron-rich nuclei around N=82......Page 196
6. Isoscaling......Page 198
References......Page 203
Signals of Enlarged Core in 23 Al YG. Ma et al.......Page 204
References......Page 214
1. Introduction......Page 216
2. Experimental results on multi modal fission in the light actinides......Page 217
3. Experimental results on nuclide production in spallation- and fragmentation-fission reactions with 238U......Page 218
4. Semiempirical macroscopic-microscopic fission model......Page 221
References......Page 227
New Results for the Intensity of Bimodal Fission in Binary and Ternary Spontaneous Fission of 252Cf C. Goodin et al.......Page 229
2. Experimental Details......Page 230
3. Data Analysis......Page 231
4. Results......Page 235
5. Conclusion......Page 238
References......Page 239
1. Experiment at the modified FOBOS setup......Page 240
2. Comparative study of the effect at different spectrometers......Page 245
References......Page 249
Energy Distribution of Ternary a-Particles in 252Cf(sf) M. Mutterer et al.......Page 251
1. Introduction......Page 252
2. Layout of Experiment......Page 253
3. Data Analysis......Page 255
4. Results and Discussion......Page 256
References......Page 260
1. Experiment......Page 261
2. Experimental results......Page 264
4. Conclusions......Page 270
References......Page 271
1. Introduction......Page 272
2.1. Sample characteristics......Page 273
2.2. Detection system......Page 274
3.1. Particle identification......Page 276
3.2. Results for the 243 Cm(nthf) measurement......Page 277
3.3. Results for the 244 Cm(SF) measurement......Page 279
4. Discussion......Page 280
4.2. Emission probabilities......Page 281
5. Conclusions and outlook......Page 282
References......Page 283
STRUCTURE OF FISSION FRAGMENTS AND NEURTON RICH NUCLEI......Page 12
1 Introduction......Page 284
3 Method of the Analysis......Page 285
4 Results and Discussion......Page 286
5 Discussion......Page 292
References......Page 293
1. Introduction......Page 294
2. Experimental setup......Page 295
3. Data analysis method.......Page 296
4.1 Fission fragment yields and neutron multiplicities......Page 297
4.2 Average spin and average energy per one gamma quantum distributions......Page 299
4.3 Fission modes......Page 300
5. Summary......Page 301
Acknowledgements......Page 302
References......Page 306
Recent Experiments at Gammasphere Intended to the Study of 252Cf Spontaneous Fission A. V. Daniel et al.......Page 308
2. Experiments......Page 309
3. Results of the first experiment......Page 310
4. Results of the second experiment......Page 314
5. Conclusion......Page 317
References......Page 319
1. INTRODUCTION......Page 320
2. Experimental techniques......Page 321
3.1. 95 Kr......Page 322
3.2. 96 Rb......Page 324
3.3. 98 Zr......Page 325
4. The N=62-66 region: 105Mo and l07Mo......Page 327
5. Conclusion......Page 329
References......Page 330
1. Introduction......Page 332
2. The RHB model with density dependent coupling constants......Page 334
3. Numerical results......Page 337
4. Conclusions......Page 341
References......Page 342
2. The relativistic mean-field theory......Page 344
3. Results and discussion......Page 347
5. Acknowledgments......Page 348
References......Page 349
1. Introduction......Page 350
2. Monte Carlo simulation of multiparticle preequilibrium emission......Page 351
3. Results......Page 352
References......Page 355
DEVELOPMENTS IN EXPERIMENTAL TECHNIQUES......Page 13
2. Basic features and capabilities of the DaqProVis system......Page 356
3. Event sorting......Page 358
4. Storing and compression of multidimensional histograms......Page 360
7. Peak identification......Page 361
8. Fitting......Page 362
References......Page 363
List of participants......Page 366
Author index......Page 372