Program - Brookhaven National Laboratory

More documents

Recommendations

Info

gamma-ray spectra will be theoretically analyzed simultaneously. Finally, theoretical calculation will be performed for the LLNWs. This contribution presents the outline of the project, and individual results are presented by other contributions. This work was supported by JSPS KAKENHI Grant Number 22226016. QA 2 9:15 AM MANREAD - Minor Actinide Nuclear Reaction Data T. Belgya, CER-IKI HAS, Budapest, Hungary. N. Colonna, INFN, Bari, Italy. B. Fursov, V. Pronyaev, IPPE, Obninsk Russian Federation. F. Gunsing, CEA Saclay, Irfu, Gif-sur-Yvette, France. Y. Han, CIAE, Beijing, China. H. Harada, O. Iwamoto, Y. Nagai, JAEA, Tokai-mura, Japan. F. Käppeler, KIT, Karlsruhe, Germany. V. Maslov, JIENR, Minsk, Belarus. A. Mengoni, Italian Embassy, Tokyo, Japan. N. Otuka, V. Semkova, S. Simakov, IAEA, Vienna, Austria. A. Plompen, EC-JRC-IRMM, Geel, Belgium. R. Reifarth, Goethe University Frankfurt, Germany. R. Vlastou, NTUA, Athens, Greece. A. Wallner, VERA laboratory, University of Vienna, Vienna, Austria. MANREAD is a co-ordinated research project of the IAEA Nuclear Data Section. It brought together experts in measurements of minor actinide nuclear data to assess the current status of the available experimental data, to summarize recent and stimulate ongoing and new measurements. Using key feedback from major recent minor actinide nuclear data evaluations from CIAE, IPPE, JAEA and Minsk, this comprehensive review allowed to identify major deficiencies in the experimental database, and areas where the accuracy of data is insufficient for applications. Prospects for improvement of nuclear data measurements were identified showing that important progress may be made with new facilities and with new experimental and measurement techniques. Alongside with this are new developments in nuclear modelling that will allow better predictions especially when benchmarked against new good quality measurements. It is expected that the final report will provide important guidance for new measurements and evaluations of minor actinide nuclear data. An overview will be presented of the contents of the project and the achievements of the various parts. Corresponding author: Arjan Plompen Session RA Fission Friday March 8, 2013 Room: Met East at 10:30 AM RA 1 10:30 AM Fission Fragment Yield, Cross Section and Prompt Neutron and Gamma Emission Data from Actinide Isotopes F.-J. Hambsch, S. Oberstedt, A. Al-Adili, T. Brys, R. Billnert, C. Matei, P. Salvador, M. Vidali EC-JRC-IRMM, Retieseweg 111, B-2440 Geel, Belgium A. Oberstedt CEA/DAM Ile-de-France, Bruyeres-le-Chatel, 91297 Arpajon Cedex, France The Institute for Reference Materials and Measurements (IRMM) has a long-standing tradition in fission fragment (FF) yield measurements. In recent years fission-fragment distributions of isotopes with vibrational resonances in the sub-threshold fission cross section have been investigated like 234,238 U [1,2]. Implementation of multi-modality in fission cross-section models may explain the connection between resonance structures and the observed FF yield fluctuations. For 234 U, the impact of the experimentally observed 248
[3] and theoretically predicted [4,5] relative increased neutron multiplicity for the heavy fragments with higher incident neutron energies has been studied. The impact is found to be noticeable on post-neutron mass yields, which are the relevant quantities for a-priori waste assessments. The fission cross sections for 240,242 Pu at threshold and in the plateau region are being investigated within the ANDES project [6]. The results show some discrepancies (up to 12 %) to the ENDF/B-VII evaluation mainly for 242 Pu around 1 MeV, where the evaluation exhibits a resonance-like structure not observed in the present work. The requested target accuracy in design studies of innovative reactor concepts like Gen-IV is in the range of a few percent. In order to be able to respond to requests for measurements of prompt neutron and gamma-ray emission [7,8] in fission IRMM has also invested in setting up a neutron and gamma-ray detector array. The neutron array is called SCINTIA and has so far been tested with 252 Cf(SF). For gamma-ray multiplicity and spectrum measurements lanthanum- and cerium-halide detectors are being used, and first quantitative results for 252 Cf(SF)and 235 U(nth, f) will be reported. [1] E. Birgersson et al., Nucl. Phys. A817, 1 (2008). [2] A. Al-Adili et al., Nucl. Instr. Meth. A624, 684 (2010). [3] A. Naqvi et al., Phys. Rev. C34, 21 (1986). [4] K.-H. Schmidt and B. Jurado, Phys. Rev. C83, 061601 (2011). [5] C. Manailescu et al., Nucl. Phys. A867, 12 (2011). [6] ANDES project, http://www.andes-nd.eu/. [7] G.Rimpault in P.Rullhusen (Ed.), Proceedings of the Workshop on Nuclear Data Needs for GenerationIV, Antwerp, Belgium, WorldScientific, ISBN981- 256-830-1, 2006, April 2005, p.46. [8] G.Rimpault, A.Courcelle, D.Blanchet, Comment to the HPRL:ID H.3 and H.4, /http://www.oecdnea.org/html/dbdata/hprl/tmp/HPRLgammafission.pdf. RA 2 11:00 AM Dynamical Scission Model N. Carjan, M. Rizea <strong>National</strong> Institute of Physics and Nuclear Engineering ”Horia Hulubei”, PO Box MG-6, 077125, Bucharest-Magurele, Romania The sudden approximation has been recently used to calculate microscopic scission-properties during the low-energy fission of 236 U [1,3]. The purpose of the present paper is to go beyond this mathematical approximation and consider the real physical situation in which the scission process, i.e., the transition from two fragments connected by a thin neck (αi) to two separated fragments (αf ) takes place in a short but finite time interval ∆T . For this we follow the evolution from αi to αf of all occupied neutron states by solving numerically the two-dimensional time-dependent Schrödinger equation with time-dependent potential. Calculations are performed for mass divisions from AL = 70 to AL = 118 (AL being the light fragment mass). The exact duration of the neck rupture is unknown. ∆T is therefore taken as parameter having values from 0.25 × 10 −22 to 9 × 10 −22 sec. The resulting scission neutron multiplicities νsc and primary fragments’ excitation energies E ∗ sc are compared with those obtained in the frame of the sudden approximation (that corresponds to ∆T = 0). As expected, shorter is the transition time more excited are the fragments and more neutrons are emitted, the sudden approximation being an upper limit. For ∆T = 10 −22 sec, which is a realistic value, the time dependent results are 20% below this limit. For transition times longer than 6 × 10 −22 sec the adiabatic limit is reached. The spatial distribution of the neutron emission points at scission is also calculated as function of the transition time ∆T . Together with the current density, it provides a detailed picture of the emission mechanism and a hint for the angular distribution of the scission neutrons with respect to the fission axis. Finally, the contributions of the light and of the heavy fragments to νsc and to E ∗ sc are estimated. [1] N. Carjan, P. Talou, O. Serot, Nucl. Phys. A 792(2007) 102 [2] N. Carjan, M. Rizea, Phys. Rev. C 82 (2010) 014617 [3] N. Carjan, F.-J. Hambsch, M. Rizea, O. Serot, Phys. Rev. C 85 (2012) 044601 249
Page 1 and 2:
ND2013 2013 International Nuclear D
Page 3 and 4:
Session BF Evaluated Nuclear Data L
Page 5 and 6:
Session DD Nuclear Structure and De
Page 7 and 8:
Hale, G. n+ 12 C Cross Sections fro
Page 9 and 10:
Domula, A. New Nuclear Structure an
Page 11 and 12:
Session KC Evaluated Nuclear Data L
Page 13 and 14:
MacCormick, M. Survey and Evaluatio
Page 15 and 16:
ments. Ivanova, T. Uncertainty Asse
Page 17 and 18:
Arnold, C. Precision Velocity Measu
Page 19 and 20:
19 Abridged Agenda Sunday March 4,
Page 21 and 22:
21 Tuesday March 5, 2013 Time Met E
Page 23 and 24:
23 Thursday March 7, 2013 Time Met
Page 26 and 27:
Book of Abstracts Session AA ND2013
Page 28 and 29:
multi-foil Parallel Plate Avalanche
Page 30 and 31:
A Regional Coupled-channel Dispersi
Page 32 and 33:
show the versatility of the code in
Page 34 and 35:
[h] Table 1: Comparison of all the
Page 36 and 37:
step was to determine which detecto
Page 38 and 39:
In an effort to maintain the qualit
Page 40 and 41:
Advances in Reactor Physics Linking
Page 42 and 43:
sponsored the work presented in thi
Page 44 and 45:
A revolutionary nuclear data system
Page 46 and 47:
done in Ref. [1]. We demonstrate th
Page 48 and 49:
CD 4 2:40 PM Development of a Syste
Page 50 and 51:
with a central cavity where small s
Page 52 and 53:
C. Arnold, E. Bond, T. Bredeweg, M.
Page 54 and 55:
DA 3 4:20 PM Characterization and P
Page 56 and 57:
detectors at the newly constructed
Page 58 and 59:
Lead and lead-based alloys are - am
Page 60 and 61:
of the setup. One option explored i
Page 62 and 63:
DC 2 4:00 PM Improved Capture Gamma
Page 64 and 65:
DC 5 5:00 PM Thermal Neutron Cross
Page 66 and 67:
M.R. Gilbert, L.W. Packer, S. Lille
Page 68 and 69:
Correlations Between Nuclear Charge
Page 70 and 71:
Community’s 7th Framework Program
Page 72 and 73:
we achieve very good separation of
Page 74 and 75:
analysis of neutron leakage spectru
Page 76 and 77:
a lower nuclear temperature than th
Page 78 and 79:
Tungsten occurs naturally in five i
Page 80 and 81:
for the combined use of integral ex
Page 82 and 83:
in XUNDL and bibliographic informat
Page 84 and 85:
former case, more realistic covaria
Page 86 and 87:
WInfried Zwermann, Kiril Velkov, An
Page 88 and 89:
LA-UR-12-23712 The ENDF/B-VII.1 [1,
Page 90 and 91:
comparison of results C/E of fissio
Page 92 and 93:
Session GA Evaluated Nuclear Data L
Page 94 and 95:
Session GC accelerator applications
Page 96 and 97:
Session GD Antineutrinos Tuesday Ma
Page 98 and 99:
M. Fallot, S. Cormon, M.Estienne, V
Page 100 and 101:
for extraction of very rare isotope
Page 102 and 103:
and neutron multiplicity, informati
Page 104 and 105:
as Monte Carlo simulations, and inc
Page 106 and 107:
on its surface. The amplification t
Page 108 and 109:
direction was recently used at n TO
Page 110 and 111:
were chemically separated and the 2
Page 112 and 113:
Strontium-82 Production at ARRONAX
Page 114 and 115:
A. Guertin, C. Duchemin, F. Haddad,
Page 116 and 117:
expected via an (n,γ) reaction. Pr
Page 118 and 119:
Shinsuke Nakayama, Shouhei Araki, Y
Page 120 and 121:
specific feature of the procedure e
Page 122 and 123:
good timing characteristics.Example
Page 124 and 125:
Materials and Measurements, Retiese
Page 126 and 127:
derive reliable covariances from ta
Page 128 and 129:
Concerns about the limits of worldw
Page 130 and 131:
Accurate and reliable nuclear data
Page 132 and 133:
Facility (HRIBF) at Oak Ridge Natio
Page 134 and 135:
CALIFA, a Calorimeter for the R3B/F
Page 136 and 137:
a modified Lorentzian model (MLO) o
Page 138 and 139:
enchmark for existing atomic mass p
Page 140 and 141:
A significant breakthrough in our t
Page 142 and 143:
and the neutron and proton emission
Page 144 and 145:
horizontal plane, the measured posi
Page 146 and 147:
The high precision of recent measur
Page 148 and 149:
Session JF Neutron Cross Section Me
Page 150 and 151:
Alamos National Laboratory, Los Ala
Page 152 and 153:
During more than four decades since
Page 154 and 155:
KC 2 2:00 PM R-matrix Analysis for
Page 156 and 157:
new covariance contributions to the
Page 158 and 159:
importance in nuclear technology, a
Page 160 and 161:
source SINQ (Swiss Spallation Neutr
Page 162 and 163:
KF 2 2:00 PM MANTRA: An Integral Re
Page 164 and 165:
J. P. Lestone, E. F. Shores Los Ala
Page 166 and 167:
LA 5 5:00 PM Measurements relevant
Page 168 and 169:
elow the neutron separation energy
Page 170 and 171:
The A = 130 Solar-System r-process
Page 172 and 173:
espectively, and identified approxi
Page 174 and 175:
W. Zwermann Gesellschaft fuer Anlag
Page 176 and 177:
LC 5 5:00 PM Uncertainty Study of N
Page 178 and 179:
solving the quantum three-body prob
Page 180 and 181:
Session LE Evaluated Nuclear Data L
Page 182 and 183:
LE 5 5:00 PM Method of Best Represe
Page 184 and 185:
for 89 fission products (representi
Page 186 and 187:
Impact of the Energy Dependent DDXS
Page 188 and 189:
from non 1/v behavior of nuclei. Mo
Page 190 and 191:
evaluation (including covariances)
Page 192 and 193:
system without isotope separation.
Page 194 and 195:
NC 3 11:20 AM Propagation of Nuclea
Page 196 and 197:
Results of the first complete compi
Page 198 and 199: Arjan Koning and Dimitri Rochman Nu
Page 200 and 201: calculating their mathematical mome
Page 202 and 203: The 33 S(n,α) cross section is of
Page 204 and 205: OA 2 2:00 PM Event-by-Event Fission
Page 206 and 207: available for ENDF/B-VII. The obser
Page 208 and 209: egions: the resolved resonances ran
Page 210 and 211: y the screening potential predicted
Page 212 and 213: [1] Y. Kojima et al., Nucl. Instr.
Page 214 and 215: y the emitted neutron. The Versatil
Page 216 and 217: enchmarking, the excitation functio
Page 218 and 219: PA 1 3:30 PM Investigation of Neutr
Page 220 and 221: as well as for a variety of Minor A
Page 222 and 223: Society, Vol. 59, No. 2, August 201
Page 224 and 225: A. Hermanne, R. Adam-Rebeles Cyclot
Page 226 and 227: We measured the isomeric yield rati
Page 228 and 229: the trends in the experimental data
Page 230 and 231: However, experiments often measure
Page 232 and 233: Statistical description of the gamm
Page 234 and 235: fragments formed are highly neutron
Page 236 and 237: F. Farget, J. Pancin GANIL, Caen, F
Page 238 and 239: ZPR-6/10 cores were applied as comp
Page 240 and 241: each nucleus in agreement with unce
Page 242 and 243: atios) is performed. In relation to
Page 244 and 245: school in science or engineering. I
Page 246 and 247: programs demanding only one compuls
Page 250 and 251: RA 3 11:20 AM A Microscopic Theory
Page 252 and 253: Laboratory, Oak Ridge, Tenn., Novem
Page 254 and 255: Session RD Safeguards and Security
Page 256 and 257: Seeking Reproducibility in Fast Cri
Page 258 and 259: RE 4 11:40 AM Verification of Curre
Page 260 and 261: that a lot of them generally descri
Page 262 and 263: R. Hirschi, A. Hungerford, G. Magko
Page 264 and 265: - a density of levels too low for w
Page 266 and 267: the MONTEBURNS(1.0)-MCNP5-ORIGEN(2.
Page 268 and 269: The Nuclear Science References (NSR
Page 270 and 271: and applications using statistical
Page 272 and 273: Shielding objects are assembled fro
Page 274 and 275: The knowledge of neutron-induced re
Page 276 and 277: thus for the second time after the
Page 278 and 279: the global children health and cons
Page 280 and 281: Lawrence Livermore National Laborat
Page 282 and 283: The Russian Nuclear Data Library fo
Page 284 and 285: OECD Nuclear Energy Agency consider
Page 286 and 287: For experimental determination of t
Page 288 and 289: The European Activation SYstem has
Page 290 and 291: Neutron capture measurements of dys
Page 292 and 293: [1] H. Penttilä, P. Karvonen, T. E
Page 294 and 295: Measurement of Activation Cross Sec
Page 296 and 297: PR 66 Processing and Validation of
Page 298 and 299:
law of the temperature ratio (RT =
Page 300 and 301:
PR 74 Resonance Analysis of the 233
Page 302 and 303:
Study of Various Potentials in Heav
Page 304 and 305:
experimental data and for the produ
Page 306 and 307:
fuel cycle impose tight requirement
Page 308 and 309:
they do not satisfy (for example, b
Page 310 and 311:
Differential Cross Sections for the
Page 312 and 313:
extends the previous evaluation and
Page 314 and 315:
various benchmark tests. The mainly
Page 316 and 317:
PR 104 Evaluations for n+ 54,56,57,
Page 318 and 319:
PR 109 Recent LAQGSM Developments a
Page 320 and 321:
PR 113 Modelling of Spallation Sour
Page 322 and 323:
Jagiellonian University, Reymonta 4
Page 324 and 325:
PR 120 Coupled-Channel Models of Di
Page 326 and 327:
PR 124 Nuclear Data Evaluation and
Page 328 and 329:
physicist. - There is no perfect se
Page 330 and 331:
Manturov, M.N. Nikolaev, A.M. Tsibo
Page 332 and 333:
Vasiliev, W. Wieselquist and H. Fer
Page 334 and 335:
Author Index 1, Vojtěch Rypar, PR
Page 336 and 337:
HF 5, KD 4, LA 3, LA 6, LA 7, LA 8,
Page 338 and 339:
Dunn, M. E., BF 4, RC 3 Dupont, Emm
Page 340 and 341:
Gulliford, Jim, CE 1 Gunsing, Frank
Page 342 and 343:
Kahl, David, HD 7 Kahler, A. C., CA
Page 344 and 345:
Lehaut, G., PD 6 Leinweber, Greg, L
Page 346 and 347:
Munkhsaikhan, J., HC 7 Mura, Luis F
Page 348 and 349:
Prael, Richard E., PE 5 Praena, Jav
Page 350 and 351:
Sheets, S., CF 2 Shen, Qingbiao, PC
Page 352 and 353:
Typel, S., JA 3 Tyutyunnikov, S., L
show all

Program - Brookhaven National Laboratory

Create successful ePaper yourself

Delete template?

Save as template?