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Lagrange C, Bersillon O, Madland DG. Coupled-Channel Optical-Model Calculations for Evaluating Neutron Cross Sections of Odd-Mass Actinides. NUCL SCI ENG 2017. [DOI: 10.13182/nse83-a17575] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ch. Lagrange
- Service de Physique Neutronique et Nucléaire Centre d’Etudes de Bruyères-le-Châtel B.P. n° 561 92542 Montrouge Cedex, France
| | - O. Bersillon
- Service de Physique Neutronique et Nucléaire Centre d’Etudes de Bruyères-le-Châtel B.P. n° 561 92542 Montrouge Cedex, France
| | - D. G. Madland
- Service de Physique Neutronique et Nucléaire Centre d’Etudes de Bruyères-le-Châtel B.P. n° 561 92542 Montrouge Cedex, France
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2
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Affiliation(s)
- E. D. Arthur
- Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545
| | - P. G. Young
- Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545
| | - D. G. Madland
- Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545
| | - R. E. MacFarlane
- Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545
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Talou P, Kawano T, Madland DG, Kahler AC, Parsons DK, White MC, Little RC, Chadwick MB. Uncertainty Quantification of Prompt Fission Neutron Spectrum forn(0.5 MeV) +239Pu. NUCL SCI ENG 2017. [DOI: 10.13182/nse09-10] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- P. Talou
- Los Alamos National Laboratory, T-2 Group, Nuclear and Particle Physics Astrophysics and Cosmology, Theoretical Division, Los Alamos, New Mexico
| | - T. Kawano
- Los Alamos National Laboratory, T-2 Group, Nuclear and Particle Physics Astrophysics and Cosmology, Theoretical Division, Los Alamos, New Mexico
| | - D. G. Madland
- Los Alamos National Laboratory, T-2 Group, Nuclear and Particle Physics Astrophysics and Cosmology, Theoretical Division, Los Alamos, New Mexico
| | - A. C. Kahler
- Los Alamos National Laboratory, T-2 Group, Nuclear and Particle Physics Astrophysics and Cosmology, Theoretical Division, Los Alamos, New Mexico
| | - D. K. Parsons
- Los Alamos National Laboratory, X-1 Group, Los Alamos, New Mexico
| | - M. C. White
- Los Alamos National Laboratory, X-1 Group, Los Alamos, New Mexico
| | - R. C. Little
- Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico
| | - M. B. Chadwick
- Los Alamos National Laboratory, X-CP, Computational Physics, Los Alamos, New Mexico
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Litvinov YA, Bürvenich TJ, Geissel H, Novikov YN, Patyk Z, Scheidenberger C, Attallah F, Audi G, Beckert K, Bosch F, Falch M, Franzke B, Hausmann M, Kerscher T, Klepper O, Kluge HJ, Kozhuharov C, Löbner KEG, Madland DG, Maruhn JA, Münzenberg G, Nolden F, Radon T, Steck M, Typel S, Wollnik H. Isospin dependence in the odd-even staggering of nuclear binding energies. Phys Rev Lett 2005; 95:042501. [PMID: 16090802 DOI: 10.1103/physrevlett.95.042501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2005] [Indexed: 05/03/2023]
Abstract
The FRS-ESR facility at GSI provides unique conditions for precision measurements of large areas on the nuclear mass surface in a single experiment. Values for masses of 604 neutron-deficient nuclides (30 < or = Z < or = 92) were obtained with a typical uncertainty of 30 microu. The masses of 114 nuclides were determined for the first time. The odd-even staggering (OES) of nuclear masses was systematically investigated for isotopic chains between the proton shell closures at Z = 50 and Z = 82. The results were compared with predictions of modern nuclear models. The comparison revealed that the measured trend of OES is not reproduced by the theories fitted to masses only. The spectral pairing gaps extracted from models adjusted to both masses, and density related observables of nuclei agree better with the experimental data.
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Affiliation(s)
- Yu A Litvinov
- Gesellschaft für Schwerionenforschung GSI, Darmstadt, Germany
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Deb PK, Amos K, Karataglidis S, Chadwick MB, Madland DG. Predicting total reaction cross sections for nucleon-nucleus scattering. Phys Rev Lett 2001; 86:3248-3251. [PMID: 11327942 DOI: 10.1103/physrevlett.86.3248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2001] [Indexed: 05/23/2023]
Abstract
Nucleon total reaction and neutron total cross sections to 300 MeV for 12C and 208Pb, and for 65 MeV scattering spanning the mass range, are predicted using coordinate space optical potentials formed by full folding of effective nucleon-nucleon interactions with realistic nuclear ground state densities. Good to excellent agreement is found with existing data.
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Affiliation(s)
- P K Deb
- School of Physics, University of Melbourne, Parkville, Victoria, Australia 3010
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Abstract
Nuclei undergoing fission can be described by a multi-dimensional potential-energy surface that guides the nuclear shape evolution--from the ground state, through intermediate saddle points and finally to the configurations of separated fission fragments. Until now, calculations have lacked adequate exploration of the shape parameterization of sufficient dimensionality to yield features in the potential-energy surface (such as multiple minima, valleys, saddle points and ridges) that correspond to characteristic observables of the fission process. Here we calculate and analyse five-dimensional potential-energy landscapes based on a grid of 2,610,885 deformation points. We find that observed fission features--such as the distributions of fission fragment mass and kinetic energy, and the different energy thresholds for symmetric and asymmetric fission--are very closely related to topological features in the calculated five-dimensional energy landscapes.
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Affiliation(s)
- P Möller
- Theoretical Division, Los Alamos National Laboratory, New Mexico 87545, USA.
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Friar JL, Madland DG, Lynn BW. QCD scales in finite nuclei. Phys Rev C Nucl Phys 1996; 53:3085-3087. [PMID: 9971296 DOI: 10.1103/physrevc.53.3085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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8
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Affiliation(s)
- B. R. Wienke
- Los Alamos National Laboratory, Applied Theoretical Physics Division MS-F664, Los Alamos, New Mexico 87545
| | - R. E. Seamon
- Los Alamos National Laboratory, Applied Theoretical Physics Division MS-F664, Los Alamos, New Mexico 87545
| | - D. G. Madland
- Los Alamos National Laboratory, Theoretical Physics Division Los Alamos, New Mexico 87545
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Nikolaus BA, Hoch T, Madland DG. Nuclear ground state properties in a relativistic point coupling model. Phys Rev C Nucl Phys 1992; 46:1757-1781. [PMID: 9968296 DOI: 10.1103/physrevc.46.1757] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Walsh RL, Chircu G, Madland DG. Calculation of Fission Neutron Spectra for Spontaneous Fission of 240Pu, 238Pu and 242Pu. NUCL SCI ENG 1991. [DOI: 10.13182/nse91-a23810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- R. L. Walsh
- Australian Nuclear Science and Technology Organisation Lucas Heights Research Laboratories Private Mailbag 1, Menai, NSW 2234, Australia
| | - G. Chircu
- University of New South Wales, P.O. Box 1 Kensington, NSW 2033, Australia
| | - D. G. Madland
- Los Alamos National Laboratory, Theoretical Division, P.O. Box 1663 Los Alamos, New Mexico 87545
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Madsen VA, Hansen LF, Brown VR, Madland DG. Correction for truncation in coupled-channels optical potentials. Phys Rev C Nucl Phys 1989; 40:1999-2009. [PMID: 9966196 DOI: 10.1103/physrevc.40.1999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Kozack R, Madland DG. Dirac optical potentials for nucleon scattering by 208Pb at intermediate energies. Phys Rev C Nucl Phys 1989; 39:1461-1474. [PMID: 9955353 DOI: 10.1103/physrevc.39.1461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Lagrange C, Madland DG, Girod M. Semimicroscopic calculations of elastic, inelastic, and total neutron scattering by 239Pu in the energy range 10 keV <= En <=. Phys Rev C Nucl Phys 1986; 33:1616-1623. [PMID: 9953323 DOI: 10.1103/physrevc.33.1616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Arthur ED, Young PG, Madland DG, MacFarlane RE. Response to “Limitations on the Use of the THOR Critical Assembly for Validation of n+ 239Pu Cross Sections”. NUCL SCI ENG 1986. [DOI: 10.13182/nse86-a18619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- E. D. Arthur
- Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545
| | - P. G. Young
- Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545
| | - D. G. Madland
- Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545
| | - R. E. MacFarlane
- Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545
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