NSR Query Results

Output year order : Descending
Format : Normal

NSR database version of April 26, 2024.

Search: Author = H.P.Hellmeister

Found 13 matches.

Back to query form

1982BR05      Z.Phys. A304, 335 (1982)

S.Brussermann, J.Keinonen, H.P.Hellmeister, K.P.Lieb

Recoil Distance Lifetime Measurements in ⁸²Kr

NUCLEAR REACTIONS ⁷⁶Ge(¹²C, 2nα), E=42-52 MeV; measured Eγ, Iγ, recoil. ⁸²Kr levels deduced T_1/2, configurations. Enriched targets. Two-quasiparticle plus rotor model, interacting boson approximation, cranked shell model.

1982KE01      Nucl.Phys. A376, 246 (1982)

J.Keinonen, K.P.Lieb, H.P.Hellmeister, A.Bockisch, H.Emling

Coulomb Excitation and Lifetime Measurements of the 2₁⁺ States in ^76,82,84Kr

NUCLEAR REACTIONS ⁶³Cu(¹⁹F, 2nα), E=58 MeV; measured recoil. ²⁷Al, ^64,66Zn, ^70,72,74,76Ge(⁸²Kr, ⁸²Kr'), (⁸⁴Kr, ⁸⁴Kr'), E=115, 118 MeV; measured Coulomb excitation, σ(E), DSA; deduced stopping power for Kr in Al, Zn, Ge, Ge in Ge, Zn in Zn. ^76,82,84Kr level deduced B(E2), T_1/2.

doi: 10.1016/0375-9474(82)90063-X
Citations: PlumX Metrics

1982KE07      Phys.Rev. C26, 716 (1982)

C.Keveloh, K.P.Lieb, H.P.Hellmeister

Lifetime Measurements of High Spin States in ⁵⁵Fe

NUCLEAR REACTIONS ⁴⁸Ti(¹²C, nα), (¹²C, 2np), E=39 MeV; measured γ-spectra, recoil. ⁵⁵Fe levels deduced T_1/2, B(λ). ⁵⁷Co levels deduced E2, M1 transition strength. Natural target, Ge(Li) detectors.

doi: 10.1103/PhysRevC.26.716
Citations: PlumX Metrics

1982PA06      Nucl.Phys. A376, 367 (1982)

J.Panqueva, H.P.Hellmeister, L.Luhmann, K.P.Lieb, F.J.Bergmeister, P.Von Brentano, R.Richter

Study of Electromagnetic Transition Strengths in ⁸¹Rb

NUCLEAR REACTIONS ⁶⁵Cu(¹⁹F, 2np), E=50, 55, 58 MeV; measured Eγ, recoil distance, DSA. ⁸¹Rb levels deduced T_1/2, B(λ). Enriched target. Asymmetric rotor plus particle model.

doi: 10.1016/0375-9474(82)90070-7
Citations: PlumX Metrics

1982PA20      Nucl.Phys. A389, 424 (1982)

J.Panqueva, H.P.Hellmeister, L.Luhmann, F.J.Bergmeister, K.P.Lieb, T.Otsuka

Nuclear Structure Studies of High-Spin States in ⁷⁹Rb and ⁷⁹Kr

NUCLEAR REACTIONS ⁶³Cu(¹⁹F, 2np), (¹⁹F, n2p), E=46-62 MeV; ⁷⁰Ge(¹²C, 2np), E=33-48 MeV; measured E(γ), I(E(γ)), γ(θ), recoil, Doppler shift, DSA. ⁷⁹Rb, ⁷⁹Kr deduced levels, J, π, T_1/2. Enriched targets. Asymmetric rotor plus particle, interacting boson fermion models.

doi: 10.1016/0375-9474(82)90527-9
Citations: PlumX Metrics

1981KE05      J.Phys.(London) G7, L117 (1981)

C.Keveloh, H.P.Hellmeister, K.P.Lieb, J.B.McGrory, I.P.Johnstone

Weak E2 Transitions in ⁵⁶Fe and ⁵⁷Co

NUCLEAR REACTIONS ⁴⁸Ti(¹²C, 2np), (¹²C, 2n2p), E=39 MeV; measured Eγ, Iγ, recoil. ⁵⁶Fe, ⁵⁷Co levels deduced T_1/2. Shell model interpretation.

NUCLEAR STRUCTURE ⁵⁷Co; analyzed B(E2), γ-branching ratios. Shell model.

doi: 10.1088/0305-4616/7/6/003
Citations: PlumX Metrics

1981PA02      Phys.Lett. 98B, 248 (1981)

J.Panqueva, H.P.Hellmeister, F.J.Bergmeister, K.P.Lieb

Evidence of Boson Cut-Off in the Aligned g_9/2 Band in ⁷⁹Rb

NUCLEAR REACTIONS ⁷⁰Ge(¹²C, 2np), E=35-45 MeV; ⁶³Cu(¹⁹F, 2np), E=42-58 MeV; measured σ(Eγ), γ(θ), γγ-coin, DSA, recoil, Eγ. ⁷⁹Rb deduced levels, T_1/2, J, π, B(E2). Rotation-aligned model, interacting boson fermion model.

doi: 10.1016/0370-2693(81)90007-1
Citations: PlumX Metrics

1979HE07      Phys.Lett. 85B, 34 (1979)

H.P.Hellmeister, U.Kaup, J.Keinonen, K.P.Lieb, R.Rascher, R.Ballini, J.Delaunay, H.Dumont

Band Structure of ⁷⁸Kr

NUCLEAR REACTIONS ⁶⁵Cu(¹⁶O, 2np), E=42-58 MeV; measured Eγ, Iγ, γ(θ), γγ-coin, DSA. ⁷⁸Kr deduced levels, J, π, T_1/2, γ branching, B(E2). Neutron-proton boson model.

doi: 10.1016/0370-2693(79)90771-8
Citations: PlumX Metrics

1979HE18      Nucl.Phys. A332, 241 (1979)

H.P.Hellmeister, J.Keinonen, K.P.Lieb, U.Kaup, R.Rascher, R.Ballini, J.Delaunay, H.Dumont

Study of High Spin States in ⁷⁸Kr

NUCLEAR REACTIONS ⁶⁵Cu(¹⁶O, 2np), E=42-58 MeV; ⁶⁵Cu(¹⁹F, 2nα), E=55 MeV; ⁶⁴Ni(¹⁶O, 2n), E=47 MeV; ⁶⁸Zn(¹²C, 2n), E=30-36 MeV; ⁶⁵Cu(¹⁶O, 3n), E=54 MeV; measured Eγ, Iγ(θ), DSA, RDM. ⁷⁸Kr deduced levels, J, π, T_1/2. Enriched target.

doi: 10.1016/0375-9474(79)90107-6
Citations: PlumX Metrics

1978HE13      Phys.Rev. C17, 2113 (1978)

H.P.Hellmeister, E.Schmidt, M.Uhrmacher, R.Rascher, K.P.Lieb, D.Pantelica

Recoil Distance Lifetime Measurements in ⁶⁹As and ⁷²Se

NUCLEAR REACTIONS ⁵⁴Fe(¹⁸O, 2npγ), E=45, 50, 55 MeV; measured σ(E). ⁵⁵Mn(¹⁶O, 2nγ), E=46 MeV; measured γγ-coin. ⁵⁶Fe(¹⁶O, 2npγ), E=59 MeV; measured recoil distance. ⁵⁸Ni(¹⁶O, pα), E=47, 52.5, 58 MeV; measured γ(θ), γγ-coin, recoil distance, DSA. ⁶⁹As, ⁷²Se deduced levels, T_1/2, J, π, δ.

doi: 10.1103/PhysRevC.17.2113
Citations: PlumX Metrics

1978HE17      Nucl.Phys. A307, 515 (1978)

H.P.Hellmeister, K.P.Lieb, W.Muller

Statistical Model Calculations of Continuum Feeding Times in Heavy-Ion Fusion Reactions

NUCLEAR REACTIONS ²⁷Al, ⁵⁸Ni(¹⁶O, X), E=30-70 MeV; calculated time development reactions. ⁷²Se deduced radiative width.

doi: 10.1016/0375-9474(78)90462-1
Citations: PlumX Metrics

1978HE22      Fizika, Suppl. 10, 13 (1978)

H.P.Hellmeister, J.Keinonen, K.P.Lieb, R.Rascher, R.Ballini, J.Delaunay, H.Dumont

Band Structure of ⁷⁸Kr

NUCLEAR REACTIONS ⁶⁵Cu(¹⁶O, 2np), E=42, 53, 54, 58 MeV; measured γγ-coin, γ(θ), σ(Eγ), DSA. ⁷⁸Kr deduced levels, T_1/2, J, π, band structure.

1977KE13      Z.Phys. A282, 227 (1977)

J.Keinonen, K.P.Lieb, H.P.Hellmeister, F.J.Bergmeister

Lifetimes of High-Spin Levels in ³⁹Ar

NUCLEAR REACTIONS ²⁵Mg(¹⁶O, 2pγ), ²⁶Mg(¹⁸O, nαγ), E ≈ 45, 55 MeV; measured recoil distance DSA. ³⁹Ar levels deduced T_1/2, B(λ).

doi: 10.1007/BF01408167
Citations: PlumX Metrics