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NSR database version of April 26, 2024.

Search: Author = G.Jakob

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2003KU11      Phys.Lett. B 562, 193 (2003)

G.Kumbartzki, N.Benczer-Koller, J.Holden, G.Jakob, T.J.Mertzimekis, M.J.Taylor, K.-H.Speidel, R.Ernst, A.E.Stuchbery, C.W.Beausang, R.Krucken

Competition between proton and neutron excitations in ⁹⁶Zr

NUCLEAR REACTIONS C, ²⁴Mg, Cu, Gd, Ta(⁹⁶Zr, ⁹⁶Zr'), E=265-274 MeV; measured Eγ, Iγ(θ, H, t), DSA following projectile Coulomb excitation. ⁹⁶Zr levels deduced T_1/2, g factors, configurations, transition B(E3). Transient field technique, comparison with shell model results.

doi: 10.1016/S0370-2693(03)00608-7
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2002JA02      Phys.Rev. C65, 024316 (2002)

G.Jakob, N.Benczer-Koller, G.Kumbartzki, J.Holden, T.J.Mertzimekis, K.-H.Speidel, R.Ernst, A.E.Stuchbery, A.Pakou, P.Maier-Komor, A.Macchiavelli, M.McMahan, L.Phair, I.Y.Lee

Evidence for Proton Excitations in ^{130, 132, 134, 136}Xe Isotopes from Measurements of g Factors of 2₁⁺ and 4₁⁺ States

NUCLEAR REACTIONS Ti(¹³⁰Xe, ¹³⁰Xe'), (¹³²Xe, ¹³²Xe'), (¹³⁴Xe, ¹³⁴Xe'), (¹³⁶Xe, ¹³⁶Xe'), E=485-508 MeV; measured Eγ, Iγ(θ, H, t), (particle)γ-coin, DSA following projectile Coulomb excitation. ^{130,132,134,136}Xe levels deduced g factors, T_1/2. Transient field technique, Gd-backed target. Comparison with IBA-II model predictions.

NUCLEAR STRUCTURE ^130,132,134Te, ^132,134,136Xe; calculated g factors. Shell model, comparison with data.

doi: 10.1103/PhysRevC.65.024316
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2001HO02      Phys.Rev. C63, 024315 (2001)

J.Holden, N.Benczer-Koller, G.Jakob, G.Kumbartzki, T.J.Mertzimekis, K.-H.Speidel, C.W.Beausang, R.Krucken, A.Macchiavelli, M.McMahan, L.Phair, A.E.Stuchbery, P.Maier-Komor, W.Rogers, A.D.Davies

Single Particle Degrees of Freedom in the Transition from Deformed to Spherical Nd Nuclei

NUCLEAR REACTIONS Si, Ni(¹⁴⁴Nd, ¹⁴⁴Nd'), (¹⁴⁶Nd, ¹⁴⁶Nd'), (¹⁴⁸Nd, ¹⁴⁸Nd'), (¹⁵⁰Nd, ¹⁵⁰Nd'), E=285, 584-608 MeV; measured Eγ, Iγ(θ, H, t), (particle)γ-coin following projectile Coulomb excitation. ^{144,146,148,150}Nd levels deduced g factors, configurations. Transient field technique.

doi: 10.1103/PhysRevC.63.024315
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2001ME20      Phys.Rev. C64, 024314 (2001)

T.J.Mertzimekis, N.Benczer-Koller, J.Holden, G.Jakob, G.Kumbartzki, K.-H.Speidel, R.Ernst, A.Macchiavelli, M.McMahan, L.Phair, P.Maier-Komor, A.Pakou, S.Vincent, W.Korten

First Measurements of g Factors in the Even Kr Isotopes

NUCLEAR REACTIONS ²⁶Mg(⁷⁸Kr, ⁷⁸Kr'), (⁸⁰Kr, ⁸⁰Kr'), (⁸²Kr, ⁸²Kr'), (⁸⁴Kr, ⁸⁴Kr'), (⁸⁶Kr, ⁸⁶Kr'), E=220-261 MeV; measured Eγ, Iγ(θ, H, t), (particle)γ-coin following projectile Coulomb excitation. ^{78,80,82,84,86}Kr levels deduced T_1/2, B(E2), g factors. Transient field technique, Gd-backed target, IBA-2 calculation.

doi: 10.1103/PhysRevC.64.024314
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2000ER01      Phys.Rev.Lett. 84, 416 (2000)

R.Ernst, K.-H.Speidel, O.Kenn, U.Nachum, J.Gerber, P.Maier-Komor, N.Benczer-Koller, G.Jakob, G.Kumbartzki, L.Zamick, F.Nowacki

Stringent Test of Shell Model Calculations in fp Shell Nuclei ^{46, 48}Ti and ^{50, 52}Cr from Measurements of g Factors and B(E2) Values

NUCLEAR REACTIONS C(⁴⁶Ti, ⁴⁶Ti'), (⁴⁸Ti, ⁴⁸Ti'), (⁵⁰Cr, ⁵⁰Cr'), (⁵²Cr, ⁵²Cr'), E=110-120 MeV; measured Eγ, Iγ(θ, H, t), DSA following projectile Coulomb excitation. ^46,48Ti, ^50,52Cr levels deduced T_1/2, B(E2), g-factors. Transient field technique. Comparison with shell model predictions.

doi: 10.1103/PhysRevLett.84.416
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2000ER06      Phys.Rev. C62, 024305 (2000); Comment Phys.Rev. C64, 069801 (2001)

R.Ernst, K.-H.Speidel, O.Kenn, A.Gohla, U.Nachum, J.Gerber, P.Maier-Komor, N.Benczer-Koller, G.Kumbartzki, G.Jakob, L.Zamick, F.Nowacki

Shell Structure of Ti and Cr Nuclei from Measurements of g Factors and Lifetimes

NUCLEAR REACTIONS C, Cu, Gd(⁴⁶Ti, ⁴⁶Ti'), (⁴⁸Ti, ⁴⁸Ti'), (⁵⁰Cr, ⁵⁰Cr'), (⁵²Cr, ⁵²Cr'), E=110-120 MeV; measured Eγ, Iγ(θ, H, t) following projectile Coulomb excitation. ^46,48Ti, ^50,52Cr deduced transitions g factors, B(E2). Transient field technique. Comparison with large scale shell model calculations.

doi: 10.1103/PhysRevC.62.024305
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2000HO25      Phys.Lett. 493B, 7 (2000)

J.Holden, N.Benczer-Koller, G.Jakob, G.Kumbartzki, T.J.Mertzimekis, K.-H.Speidel, A.Macchiavelli, M.McMahan, L.Phair, P.Maier-Komor, A.E.Stuchbery, W.F.Rogers, A.D.Davies

Evidence for 2f_7/2 Neutron Strength in the Low Energy Structure of ^{144, 146, 148, 150}Nd Isotopes

NUCLEAR REACTIONS Ni(¹⁴⁴Nd, ¹⁴⁴Nd'), (¹⁴⁶Nd, ¹⁴⁶Nd'), (¹⁴⁸Nd, ¹⁴⁸Nd'), (¹⁵⁰Nd, ¹⁵⁰Nd'), E=584-608 MeV; measured Eγ, Iγ(θ), precession angles following projectile Coulomb excitation. ^{144,146,148,150}Nd levels deduced g factors, configurations. Deformation effects discussed. Gammasphere array, transient field technique.

doi: 10.1016/S0370-2693(00)01136-9
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2000JA11      Phys.Lett. 494B, 187 (2000)

G.Jakob, N.Benczer-Koller, J.Holden, G.Kumbartzki, T.J.Mertzimekis, K.-H.Speidel, R.Ernst, P.Maier-Komor, C.W.Beausang, R.Krucken

First Measurements of the g Factors of the 2₁⁺ and 3₁⁺ States of Semi-Magic ₄₀⁹⁰Zr

NUCLEAR REACTIONS ^24,26Mg(⁹⁰Zr, ⁹⁰Zr'), E=270, 300 MeV; measured Eγ, Iγ(θ, H, t), (recoil)γ-coin, DSA following projectile Coulomb excitation. ⁹⁰Zr levels deduced g factors, T_1/2, configurations. Transient field technique, target backed with Gd, Ta, Cu.

doi: 10.1016/S0370-2693(00)01197-7
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1999JA13      Phys.Lett. 468B, 13 (1999)

G.Jakob, N.Benczer-Koller, J.Holden, G.Kumbartzki, T.J.Mertzimekis, K.-H.Speidel, C.W.Beausang, R.Krucken

Spin Dependence of d_5/2 Neutron Configurations in the Wave Functions of ^{92, 94}Zr from g-Factor Measurements

NUCLEAR REACTIONS Si(⁹²Zr, ⁹²Zr'), (⁹⁴Zr, ⁹⁴Zr'), E=300 MeV; measured Eγ, Iγ(θ, H, t) following projectile Coulomb excitation. ^92,94Zr levels deduced g factors, configurations.

doi: 10.1016/S0370-2693(99)01203-4
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1998SP03      Phys.Rev. C57, 2181 (1998)

K.-H.Speidel, N.Benczer-Koller, G.Kumbartzki, C.Barton, A.Gelberg, J.Holden, G.Jakob, N.Matt, R.H.Mayer, M.Satteson, R.Tanczyn, L.Weissman

Shell Closure Effects in the Stable ^74-82Se Isotopes from Magnetic Moment Measurements using Projectile Excitation and the Transient Field Technique

NUCLEAR REACTIONS Ta(⁷⁴Se, ⁷⁴Se'), (⁷⁶Se, ⁷⁶Se'), (⁷⁸Se, ⁷⁸Se'), (⁸⁰Se, ⁸⁰Se'), (⁸²Se, ⁸²Se'), E=230-262 MeV; measured Eγ, Iγ(H, θ) in polarized Gd following projectile Coulomb excitation. ^{74,76,78,80,82}Se deduced g-factors. Multilayer target. Comparison with IBM calculations.

doi: 10.1103/PhysRevC.57.2181
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1997GR19      Phys.Rev.Lett. 79, 4538 (1997)

U.Grabowy, K.-H.Speidel, J.Cub, H.Busch, H.-J.Wollersheim, G.Jakob, A.Gohla, J.Gerber, M.Loewe

Evidence for Transient Electric Field Gradients in H-Like Ions Traversing Gd Targets at High Velocities

NUCLEAR REACTIONS Ag, Gd(²⁰Ne, ²⁰Ne'), Gd(³²S, ³²S'), (⁵²Cr, ⁵²Cr'), Pb, Gd(⁴⁰Ar, ⁴⁰Ar'), (⁵⁴Fe, ⁵⁴Fe'), Pb, Fe(⁶²Ni, ⁶²Ni'), E not given; analyzed (particle)γ(θ) in polarized target following Coulomb excitation; deduced transient electric field gradient.

doi: 10.1103/PhysRevLett.79.4538
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1997GR24      Z.Phys. A359, 377 (1997)

U.Grabowy, K.-H.Speidel, J.Cub, H.Busch, H.-J.Wollersheim, G.Jakob, A.Gohla, J.Gerber, M.Loewe

Transient Magnetic Field and Electric Field Gradient of Fast H-Like ⁵²Cr Ions Traversing Gd Targets

NUCLEAR REACTIONS Ta(⁵²Cr, ⁵²Cr'), E=14.5 MeV/nucleon; measured Eγ, Iγ, (particle)γ(θ) following projectile Coulomb excitation; deduced transient magnetic field, transient electric field gradient in Gd backing.

doi: 10.1007/s002180050417
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1997SP04      Z.Phys. A358, 389 (1997)

K.-H.Speidel, L.Kleinen, A.Gohla, R.Ernst, H.Busch, G.Jakob, U.Grabowy, V.Roth, J.Gerber

Transient Field Measurements on Light and Heavy Ions in Amorphous Iron-Boron Compounds

NUCLEAR REACTIONS ¹⁹⁷Au(²⁴Mg, ²⁴Mg'), E=100 MeV; ¹⁹⁷Au(²⁸Si, ²⁸Si'), E=150 MeV; Mg(⁴⁸Ti, ⁴⁸Ti'), E=130 MeV; Mg(⁵⁶Fe, ⁵⁶Fe'), E=150 MeV; measured γγ-coin, precession θ in Fe₈₀B₂₀, Fe₈₅B₁₅ hosts following Coulomb excitation; deduced transient, static field contributions, Fe-B strength parameters.

doi: 10.1007/s002180050346
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1996BU17      Z.Phys. A355, 9 (1996)

H.Busch, G.Jakob, K.-H.Speidel, J.Cub, S.Kremeyer, U.Grabowy, A.Gohla, J.Gerber, A.Meens, P.Maier-Komor, C.Rezny, M.Schulz, P.Padberg

Transient Field Measurements on ⁵⁶Fe- and ⁸⁰Se-Ions using Segmented Fe-Layers

NUCLEAR REACTIONS Mg(⁵⁶Fe, ⁵⁶Fe'), E=150 MeV; ⁸⁰Se(⁴⁸Ti, ⁴⁸Ti'), E=125 MeV; measured (particle)γ-coin following Coulomb excitation.

doi: 10.1007/s002180050071
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1996JA09      Nucl.Phys. A601, 117 (1996)

G.Jakob, K.-H.Speidel, S.Kremeyer, H.Busch, U.Grabowy, A.Gohla, J.Cub, J.Gerber, A.-M.Oros, K.Heyde, J.Rikovska

Spectroscopy of Low-Lying Levels in ⁸¹Br and Its Nuclear-Structure Interpretation

NUCLEAR REACTIONS ²⁸Si(⁸¹Br, ⁸¹Br'), E=210 MeV; measured γ(θ, H) in polarized Gd, (particle)γ-coin following Coulomb excitation, DSA. ⁸¹Br levels deduced g, T_1/2, δ. Multilayered targets. Models comparison.

doi: 10.1016/0375-9474(96)00085-1
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1995GR25      Nucl.Instrum.Methods Phys.Res. B101, 422 (1995)

U.Grabowy, H.Busch, A.Gohla, K.-H.Speidel, S.Kremeyer, G.Jakob, K.Freitag, J.Gerber, W.Assmann

Preparation and Analysis of Targets with Implanted Thick Ar Layers for In-Beam γ-Spectroscopy

NUCLEAR REACTIONS ⁴⁰Ar(⁶²Ni, ⁶²Ni'), E=150 MeV; measured Eγ, Iγ following target Coulomb excitation; deduced Ar content of target. Implantation of ⁴⁰Ar ions in thick Fe layers.

doi: 10.1016/0168-583X(95)00558-7
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1994KR04      Z.Phys. A348, 49 (1994)

S.Kremeyer, K.-H.Speidel, O.Jessensky, H.Busch, U.Grabowy, A.Gohla, J.Cub, G.Jakob, P.Maier-Komor, J.Gerber, A.Meens, F.Hagelberg, T.P.Das

Hyperfine Interaction Studies on Swift O-Ions Emerging with Polarized Electrons from Ferromagnetic Layers into Vacuum

NUCLEAR REACTIONS ⁴He(¹⁶O, ¹⁶O'), E=44 MeV; measured γα-coin, particle spectra, Iγ(θ) vs plunger distance for Gd-, Ni-layers; deduced electron polarization in highly stripped O-ions in Gd-, Ni-layers, transient field microscopic structure determining ionic state.

doi: 10.1007/BF01291652
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1994SP01      Phys.Lett. 324B, 130 (1994)

K.-H.Speidel, G.Jakob, U.Grabowy, J.Cub, S.Kremeyer, H.Busch, A.Gohla, O.Jessensky, J.Gerber, A.Meens

Large Transient Magnetic Fields of ²⁸Si Ions in Backscattering through Fe at High Velocities

NUCLEAR REACTIONS Fe(²⁸Si, ²⁸Si'), E=150 MeV; measured ²⁸Si transient field precessions following projectile Coulomb excitation.

doi: 10.1016/0370-2693(94)90398-0
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1994SP05      Nucl.Phys. A578, 300 (1994)

K.-H.Speidel, G.Jakob, J.Cub, S.Kremeyer, H.Busch, U.Grabowy, J.Gerber, J.Rikovska, K.Heyde

Magnetic-Moment and Lifetime Measurements of Coulomb-Excited Levels in ⁷⁹Br

NUCLEAR REACTIONS ²⁸Si(⁷⁹Br, ⁷⁹Br'), E=214 MeV; measured σ(θ, H) in polarized Gd, (particle)γ-coin, Coulomb excitation, DSA. ⁷⁹Br levels deduced g, T_1/2, δ. Multilayered targets. Model comparison.

doi: 10.1016/0375-9474(94)90981-4
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