Search Results - "Sparenberg, J"
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The Jost function and Siegert pseudostates from R-matrix calculations at complex wavenumbers
Published in The European physical journal. A, Hadrons and nuclei (06-05-2024)“…The single-channel Jost function is calculated with the computational R -matrix on a Lagrange-Jacobi mesh, in order to study its behaviour at complex…”
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CDCC calculations with the Lagrange-mesh technique
Published in Nuclear physics. A (01-11-2010)“…We apply the Lagrange-mesh technique to the Continuum Discretized Coupled Channel (CDCC) theory. The CDCC equations are solved with the R-matrix method, using…”
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Target volume coverage and dose to organs at risk in prostate cancer patients: Dose calculation on daily cone-beam CT data sets
Published in Strahlentherapie und Onkologie (01-03-2014)“…Purpose On the basis of correct Hounsfield unit to electron density calibration, cone-beam computed tomography (CBCT) data provide the opportunity for…”
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Survey of the mathematical theory of fish locomotion
Published in Journal of engineering mathematics (01-12-2002)Get full text
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Note on the glide of a bird with wings bent downwards
Published in Journal of mathematical biology (01-09-2006)“…This note considers the influence of the bending down of the wings of a bird on the performance of its glide. The induced drag of bent wings is compared with…”
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Supersymmetry between Phase-Equivalent Coupled-Channel Potentials
Published in Physical review letters (01-11-1997)Get full text
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Resolution of the Gross-Pitaevskii equation with the imaginary-time method on a Lagrange mesh
Published in Physical review. E, Statistical, nonlinear, and soft matter physics (01-11-2010)“…The Lagrange-mesh method is an approximate variational calculation which has the simplicity of a mesh calculation. Combined with the imaginary-time method, it…”
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Coupled-channel R-matrix method on a Lagrange mesh
Published in Nuclear physics. A (07-09-1998)“…The coupled-channel R-matrix method on a Lagrange mesh is a very simple approximation of the R-matrix method with a basis. The mesh points are zeros of shifted…”
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Inverse scattering with singular potentials: A supersymmetric approach
Published in Physical review. C, Nuclear physics (01-05-1997)Get full text
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Deep l-independent potentials from supersymmetric inversion
Published in Physical review letters (25-09-2000)“…Central potentials, independent of both the energy and the angular momentum l, are constructed from elastic phase shifts. The ambiguities of a fixed- l…”
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Phase-equivalent complex potentials
Published in Nuclear physics. A (25-03-1996)“…Potentials providing the same complex phase shifts as a given complex potential but with a shallower real part are constructed with supersymmetric…”
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A consistent 3 α and 2 αΛ Faddeev calculation using the 2 α RGM kernel
Published in Nuclear physics. A (28-06-2004)Get full text
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Most general form of phase-equivalent radial potentials for arbitrary modifications of the bound spectrum
Published in Physical review letters (21-11-1994)“…The most general form for radial potentials with the same phase shifts as a given real potential but arbitrarily different bound spectra is derived with a…”
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Precise determination of the effective-range parameters up to an arbitrary order
Published in Physical review. C, Nuclear physics (01-07-2013)Get full text
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Neutron–electron scattering length deduced from Pendellösung interferometry in neutron Bragg reflections on silicon
Published in Journal of electron spectroscopy and related phenomena (01-06-2003)“…A new method to deduce the neutron–electron scattering length from high-precision thermal-neutron measurements of the nuclear scattering length and of the…”
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Supersymmetric transformations in coupled-channel systems
Published in Physical review. C, Nuclear physics (2000)Get full text
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Supersymmetry in a three-body model of halo nuclei
Published in Physics letters. B (1999)“…Supersymmetric transformations allow eliminating forbidden bound states from a potential without affecting its scattering properties. They are applied to the…”
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Note on the existence and uniqueness of optimum lifting surfaces with reduced tip vorticity
Published in Mathematical methods in the applied sciences (10-07-2002)“…In linearized optimization theory, lifting surfaces shed tip vorticity of which the strength has in general infinite square root singularities. Here we impose,…”
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On the mechanics of the arrow : Archer's Paradox
Published in Journal of engineering mathematics (01-05-1997)Get full text
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Concentrated force acting in an inviscid and incompressible parallel flow
Published in Mathematical methods in the applied sciences (01-12-2000)“…The paper discusses the steady disturbance velocity field induced by a concentrated force acting at a fixed point of space in a parallel flow of an inviscid…”
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