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NSR database version of April 24, 2024.

Search: Author = K.J.Roche

Found 7 matches.

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2019BU20      Phys.Rev. C 100, 034615 (2019)

A.Bulgac, S.Jin, K.J.Roche, N.Schunck, I.Stetcu

Fission dynamics of ²⁴⁰Pu from saddle to scission and beyond

NUCLEAR REACTIONS ²³⁹Pu(n, F), E=thermal, 2, 4, 5.5 MeV; calculated fission pathway for ²⁴⁰Pu along the mass quadrupole moment Q₂₀ using SeaLL1, SkM*, and UNEDF1 energy density functionals (EDFs), contours of neutron and proton densities, magnitudes and phases of neutron and proton pairing fields, snapshots of the induced fission of ²⁴⁰Pu with enhanced pairing strength, fission trajectories using SeaLL1 and SkM* EDFs, initial excitation energy, TKE, neutron and proton numbers, excitation energies of the heavy and light fission fragments (FFs), total excitation energy of FFs, average saddle-to-scission times, internal temperatures for the light and heavy FFs, average neutron multiplicity emitted by FFs as a function of incident neutron energy, time evolution of quadrupole Q₂₀ and octupole Q₃₀ moments of the light and heavy FFs before and after scission, number of neutrons emitted predominantly after scission; deduced minor effect of pairing strength on the fission dynamics. Calculations based on time-dependent superfluid local density approximation (TDSLDA), with no limit on pairing . Comparison with experimental data for average neutron multiplicities.

doi: 10.1103/PhysRevC.100.034615
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2017JI01      Phys.Rev. C 95, 044302 (2017)

S.Jin, A.Bulgac, K.Roche, G.Wlazlowski

Coordinate-space solver for superfluid many-fermion systems with the shifted conjugate-orthogonal conjugate-gradient method

NUCLEAR STRUCTURE ⁴⁰Ca, ⁶²Ni, ¹⁰²Zr, ²⁰⁸Pb, ²⁴⁰Pu; calculated ground states and various densities such as particle number, spin, current, kinetic energy for a nuclear system, and saddle point constrained fission path for ²⁴⁰Pu; nuclei served as benchmarks for calculations using shifted conjugate orthogonal conjugate-gradient (COCG) Krylov method.

doi: 10.1103/PhysRevC.95.044302
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2016BU04      Phys.Rev.Lett. 116, 122504 (2016)

A.Bulgac, P.Magierski, K.J.Roche, I.Stetcu

Induced Fission of ²⁴⁰Pu within a Real-Time Microscopic Framework

RADIOACTIVITY ²⁴⁰Pu(SF) [from ²³⁹Pu(n, X)²⁴⁰Pu, E low]; calculated fissioning dynamics parameters, fission fragments properties, negligible role the collective inertia in the fully nonadiabatic treatment of nuclear dynamics, where all collective degrees of freedom (CDOF) are included.

doi: 10.1103/PhysRevLett.116.122504
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2015ST01      Phys.Rev.Lett. 114, 012701 (2015)

I.Stetcu, C.A.Bertulani, A.Bulgac, P.Magierski, K.J.Roche

Relativistic Coulomb Excitation within the Time Dependent Superfluid Local Density Approximation

NUCLEAR REACTIONS ²³⁸U(²³⁸U, ²³⁸U'), E not given; calculated the total energy spectrum of emitted electromagnetic radiation, damping resonance width. Goldhaber-Teller model.

doi: 10.1103/PhysRevLett.114.012701
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2014WL01      Phys.Rev.Lett. 113, 182503 (2014)

G.Wlazlowski, J.W.Holt, S.Moroz, A.Bulgac, K.J.Roche

Auxiliary-Field Quantum Monte Carlo Simulations of Neutron Matter in Chiral Effective Field Theory

doi: 10.1103/PhysRevLett.113.182503
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2013BO19      Comput.Phys.Commun. 184, 085101 (2013)

S.Bogner, A.Bulgac, J.Carlson, J.Engel, G.Fann, R.J.Furnstahl, S.Gandolfi, G.Hagen, M.Horoi, C.Johnson, M.Kortelainen, E.Lusk, P.Maris, H.Nam, P.Navratil, W.Nazarewicz, E.Ng, G.P.A.Nobre, E.Ormand, T.Papenbrock, J.Pei, S.C.Pieper, S.Quaglioni, K.J.Roche, J.Sarich, N.Schunck, M.Sosonkina, J.Terasaki, I.Thompson, J.P.Vary, S.M.Wild

Computational nuclear quantum many-body problem: The UNEDF project

NUCLEAR REACTIONS ³He(d, p), ⁷Be(p, γ), E<1MeV; ¹⁷²Yb, ¹⁸⁸Os, ²³⁸U(γ, X), E<24 MeV; calculated σ. Comparison with experimental data.

NUCLEAR STRUCTURE ¹⁰⁰Zr; calculated quadrupole deformation parameter, radii, neutron separation energy.

doi: 10.1016/j.cpc.2013.05.020
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2011ST24      Phys.Rev. C 84, 051309 (2011)

I.Stetcu, A.Bulgac, P.Magierski, K.J.Roche

Isovector giant dipole resonance from the 3D time-dependent density functional theory for superfluid nuclei

NUCLEAR REACTIONS ¹⁷²Yb, ¹⁸⁸Os, ²³⁸U(γ, n); calculated time-dependent proton and neutron occupation probabilities, photo-absorption cross sections for isovector giant dipole resonances. Fully symmetry-unrestricted time-dependent density functional theory for two Skyrme force parametrizations SkP and SLy4. Comparison with experimental data.

doi: 10.1103/PhysRevC.84.051309
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Note: The following list of authors and aliases matches the search parameter K.J.Roche: , K.J.ROCHE