NSR Query Results

Output year order : Descending
Format : Normal

NSR database version of April 11, 2024.

Search: Author = U.Helm

Found 6 matches.

Back to query form

2001CA56      Nucl.Phys. A696, 317 (2001)

J.Carter, H.Diesener, U.Helm, G.Herbert, P.von Neumann-Cosel, A.Richter, G.Schrieder, S.Strauch

Giant Resonance Spectroscopy of ⁴⁰Ca with the (e, e'x) Reaction (III): Direct versus statistical decay

NUCLEAR REACTIONS ⁴⁰Ca(e, e'p), (e, e'α), E=78, 183.5 MeV; analyzed proton and α branching ratios; deduced direct contributions, emitter size, related reaction mechanism features. Statistical model calculations, fluctuation analysis.

doi: 10.1016/S0375-9474(01)01208-8
Citations: PlumX Metrics

2001DI23      Nucl.Phys. A696, 272 (2001)

H.Diesener, U.Helm, P.von Neumann-Cosel, A.Richter, G.Schrieder, A.Stascheck, A.Stiller, J.Carter

Giant Resonance Spectroscopy of ⁴⁰Ca with the (e, e'x) Reaction (I): Experiments and overview of results

NUCLEAR REACTIONS ⁴⁰Ca(e, e'), (e, e'p), (e, e'α), E=78, 183.5 MeV; measured σ(E, θ). ⁴⁰Ca deduced p, α decay from giant resonance into low-lying states of ³⁹K and ³⁶Ar.

doi: 10.1016/S0375-9474(01)01206-4
Citations: PlumX Metrics

2001DI24      Nucl.Phys. A696, 293 (2001)

H.Diesener, U.Helm, V.Huck, P.von Neumann-Cosel, C.Rangacharyulu, A.Richter, G.Schrieder, A.Stascheck, S.Strauch, J.Ryckebusch, J.Carter

Giant Resonance Spectroscopy of ⁴⁰Ca with the (e, e'x) Reaction (II): Multipole decomposition of 4π-integrated spectra and angular correlations

NUCLEAR REACTIONS ⁴⁰Ca(e, e'p), (e, e'α), E=78, 183.5 MeV; measured angular correlations of p, α decay into low-lying states of ³⁹K and ³⁶Ar. ⁴⁰Ca deduced E0, E1, E2 strength distributions. Continuum RPA calculations.

doi: 10.1016/S0375-9474(01)01209-X
Citations: PlumX Metrics

1995DI03      Phys.Lett. 352B, 201 (1995)

H.Diesener, U.Helm, P.von Neumann-Cosel, A.Richter, G.Schrieder, S.Strauch

Isoscalar Multipole Strength Decomposition in ⁴⁰Ca with the (e, e'α₀) Reaction

NUCLEAR REACTIONS ⁴⁰Ca(e, e'α), E=183.5 MeV; measured σ(θ, Eα) vs excitation. ⁴⁰Ca deduced E2, E0 transition strength distribution related features.

doi: 10.1016/0370-2693(95)00500-K
Citations: PlumX Metrics

1994DI03      Phys.Rev.Lett. 72, 1994 (1994)

H.Diesener, U.Helm, G.Herbert, V.Huck, P.von Neumann-Cosel, C.Rangacharyulu, A.Richter, G.Schrieder, A.Stascheck, A.Stiller, J.Ryckebusch, J.Carter

Excitation and Decay of Giant Resonances in the ⁴⁰Ca(e, e'X) Reaction

NUCLEAR REACTIONS ⁴⁰Ca(e, e'X), E=183.5 MeV; measured σ(θ)/σ(Mott) ratio vs momentum transfer σ(θp, θ(e), Ep); deduced E1, (E2+E0) strength functions, reaction mechanism. Continuum RPA.

doi: 10.1103/PhysRevLett.72.1994
Citations: PlumX Metrics

1994VO05      Nucl.Phys. A569, 373c (1994)

P.von Neumann-Cosel, H.Diesener, U.Helm, G.Herbert, V.Huck, A.Richter, G.Schrieder, A.Stascheck, A.Stiller, J.Ryckebusch, J.Carter, A.A.Cowley, R.W.Fearick, J.J.Lawrie, S.J.Mills, R.T.Newman, J.V.Pilcher, F.D.Smit, Z.Z.Vilakazi, D.M.Whittal

Excitation and Decay of Electric Giant Resonances in the ⁴⁰Ca(e, e'X) and ⁴⁰Ca(p, p'X) Reactions

NUCLEAR REACTIONS ⁴⁰Ca(e, e'p), E=57, 78, 183.5 MeV; measured σ(θ(e), Ep). ⁴⁰Ca(p, p'α), E=99.1 MeV; ⁴⁰Ca(e, e'α), E=183.5 MeV; measured proton, α-channel decay. ⁴⁰Ca deduced electric giant resonance decay features.

doi: 10.1016/0375-9474(94)90128-7
Citations: PlumX Metrics