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Search: Author = E.Spamer

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2000VO04      Nucl.Phys. A669, 3 (2000)

P.von Neumann-Cosel, H.-D.Graf, U.Kramer, A.Richter, E.Spamer

Electroexcitation of Isoscalar and Isovector Magnetic Dipole Transitions in 12C and Isospin Mixing

NUCLEAR REACTIONS 12C(e, e'), E=30-60 MeV; measured σ(E, θ). 12C deduced magnetic dipole transitions widths, B(M1), isospin mixing, Coulomb matrix element.

doi: 10.1016/S0375-9474(99)00564-3
Citations: PlumX Metrics


1996LU01      Phys.Rev. C53, 127 (1996)

C.Luttge, P.von Neumann-Cosel, F.Neumeyer, C.Rangacharyulu, A.Richter, G.Schrieder, E.Spamer, D.I.Sober, S.K.Matthews, B.A.Brown

Isovector M1 Transitions in 28Si and the Role of Meson Exchange Currents

NUCLEAR REACTIONS 28Si(e, e'), E=42.7, 50.3, 62.1 MeV; measured σ(E, θ=180°). 28Si levels deduced B(M1). Shell model.

NUCLEAR STRUCTURE 28Si, 28P; calculated B(M1), Gamow-Teller transition strengths; deduced meson exchange current contributions. Shell model.

doi: 10.1103/PhysRevC.53.127
Citations: PlumX Metrics


1995CA14      Phys.Lett. 349B, 433 (1995)

M.C.A.Campos, P.von Neumann-Cosel, F.Neumeyer, A.Richter, G.Schrieder, E.Spamer, B.A.Brown, R.J.Peterson

Isospin Mixing in the Electroexcitation of the E(x) = 10.84 MeV, J(π); T = 1-; 0 State in 12C at Low Momentum Transfers

NUCLEAR REACTIONS 12C(e, e'), E=60 MeV; measured σ(θ) vs excitation. 12C level deduced longitudinal form factor, isospin breaking Coulomb matrix element. Shell model comparison.

doi: 10.1016/0370-2693(95)00252-G
Citations: PlumX Metrics


1995LU25      Nucl.Instrum.Methods Phys.Res. A366, 325 (1995)

C.Luttge, C.Hofmann, J.Horn, F.Neumeyer, A.Richter, G.Schrieder, E.Spamer, A.Stiller, D.I.Sober, S.K.Matthews, L.W.Fagg

Large-Aperture System for High-Resolution 180° Electron Scattering

NUCLEAR REACTIONS 12C(e, e), (e, e'), E=62 MeV; measured σ(θ). 28Si(e, e), E=62 MeV; measured spectra, θ=180°. High resolution 180° scattering large aperture system.

doi: 10.1016/0168-9002(95)00497-1
Citations: PlumX Metrics


1994FO03      Phys.Rev. C49, 1359 (1994)

C.W.Foltz, D.I.Sober, L.W.Fagg, H.D.Graf, A.Richter, E.Spamer, B.A.Brown

Electroexcitation of Low-Multipolarity Magnetic Transitions in 36Ar and 38Ar

NUCLEAR REACTIONS 36,38Ar(e, e'), E=35-65 MeV; measured σ(E, θ). 36,38Ar deduced transition multipolarities, B(λ). Pressurized gas target. Shell-model calculations.

doi: 10.1103/PhysRevC.49.1359
Citations: PlumX Metrics


1989HA12      Phys.Lett. 221B, 109 (1989)

G.Hartung, A.Richter, E.Spamer, H.Woertche, C.Rangacharyulu, C.W.de Jager, H.de Vries

Inelastic Electron Scattering Off Mixed Symmetry J(π) = 2+ States in 56Fe

NUCLEAR REACTIONS 56Fe(e, e'), E=40, 68 MeV; measured σ(E(e')), E2 form factors.

doi: 10.1016/0370-2693(89)91481-0
Citations: PlumX Metrics


1987RA26      Astrophys.J. 320, 405 (1987)

C.Rangacharyulu, G.Kuechler, A.Richter, E.Spamer

Radiative Transitions in 27Al and Their Relevance to the 26Al(p, γ)27Si Reaction Under Stellar Conditions

NUCLEAR REACTIONS, ICPND 27Al(e, e'), E=25, 35, 40 MeV; measured electron scattering spectra. 27Al deduced γ-transition strengths. 26Al(p, γ), E=0.05-0.15 MeV; calculated reaction rate, σ.

doi: 10.1086/165553
Citations: PlumX Metrics


1985OB02      Phys.Rev. C32, 2158 (1985)

A.Oberstedt, D.Bohle, G.Kuchler, A.Richter, E.Spamer, C.Rangacharyulu

Ground State M1 Transition Strength of the 1.115 MeV Level in 65Cu

NUCLEAR REACTIONS 65Cu(e, e'), E=24.6-140 MeV; measured σ(E(e')), form factors. 65Cu transitions deduced B(λ), Γγ(M1).

doi: 10.1103/PhysRevC.32.2158
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1985SO05      Phys.Rev. C31, 2054 (1985)

D.I.Sober, B.C.Metsch, W.Knupfer, G.Eulenberg, G.Kuchler, A.Richter, E.Spamer, W.Steffen

Magnetic Dipole Excitations in the N = 28 Isotones 50Ti, 52Cr, and 54Fe

NUCLEAR REACTIONS 50Ti, 52Cr, 54Fe(e, e'), E=30-57 MeV; measured σ(θ), σ(E(e')). 50Ti, 52Cr, 54Fe levels deduced B(λ), transition radius, M1 total strength, fragmentation. Shell model calculations.

doi: 10.1103/PhysRevC.31.2054
Citations: PlumX Metrics


1984RA04      Phys.Lett. 135B, 29 (1984)

C.Rangacharyulu, W.Steffen, A.Richter, E.Spamer, O.Titze

Isovector M2 Transitions in 42,44Ca and Comparison with the Analogous Unique First-Forbidden β- Decays of 42,44K

NUCLEAR REACTIONS 42,44Ca(e, e'), E=50 MeV; measured σ(E(e')). 42,44Ca deduced IAS state isovector M2 transition strength, spin magnetization role.

doi: 10.1016/0370-2693(84)90447-7
Citations: PlumX Metrics


1983BE11      Nucl.Phys. A398, 408 (1983)

D.Bender, G.Eulenberg, A.Richter, E.Spamer, B.C.Metsch, W.Knupfer

Search for M1 Strength in 51V and the Difference in 51V(e, e') and 51V(p, p') Spectra

NUCLEAR REACTIONS 51V(e, e'), E=38-57 MeV; measured σ(E, θ). 51V deduced B(M1).

doi: 10.1016/0375-9474(83)90292-0
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1983BE36      Nucl.Phys. A406, 504 (1983)

D.Bender, A.Richter, E.Spamer, E.J.Ansaldo, C.Rangacharyulu, W.Knupfer

High-Resolution (e, e') Study of Isovector M1 and M2 Transitions in the Oxygen Isotopes (III). 18O

NUCLEAR REACTIONS 18O(e, e'), E=30-60 MeV; measured σ(E, θ). 18O levels deduced tentative J, π, B(M1), B(M2) at photon point. Shell-model calculations. Enriched isotope gas target.

doi: 10.1016/0375-9474(83)90373-1
Citations: PlumX Metrics


1983KU14      Nucl.Phys. A406, 473 (1983)

G.Kuchler, A.Richter, E.Spamer, W.Steffen, W.Knupfer

High-Resolution (e, e') Study of Isovector M1 and M2 Transitions in the Oxygen Isotopes (I). 16O

NUCLEAR REACTIONS 16O(e, e'), E=30-60 MeV; measured σ(E, θ). 16O levels deduced B(λ) at photon point. Shell-model, RPA calculations. Solid BeO, Be targets.

doi: 10.1016/0375-9474(83)90371-8
Citations: PlumX Metrics


1983MU03      Phys.Lett. 120B, 305 (1983)

S.Muller, A.Richter, E.Spamer, W.Knupfer, B.C.Metsch

Experimental Study of Proton and Neutron Spin-Flip Contributions to the Electroexcitation of the J(π) = 1+ State at E(x) = 5.846 MeV in 208Pb

NUCLEAR REACTIONS 208Pb(e, e'), E=23.3, 36.4, 49.8, 61.2 MeV; measured σ(E(e')), σ(θ) vs E; deduced tensor correlation, neutron, proton contribution interference. 208Pb deduced M1 transition isovector character. RPA calculations.

doi: 10.1016/0370-2693(83)90450-1
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1983RA27      Nucl.Phys. A406, 493 (1983)

C.Rangacharyulu, E.J.Ansaldo, D.Bender, A.Richter, E.Spamer

High-Resolution (e, e') Study of Isovector M1 and M2 Transitions in the Oxygen Isotopes (II). 17O

NUCLEAR REACTIONS 17O(e, e'), E=39-59 MeV; measured σ(E, θ). 17O levels deduced possible J, π, B(M1), B(M2) at photon point. β- decay, mirror symmetry comparison. Enriched isotope gas target.

doi: 10.1016/0375-9474(83)90372-X
Citations: PlumX Metrics


1982EU01      Phys.Lett. 116B, 113 (1982)

G.Eulenberg, D.I.Sober, W.Steffen, H.-D.Graf, G.Kuchler, A.Richter, E.Spamer, B.C.Metsch, W.Knupfer

Inelastic Electron Scattering on the N = 28 Isotones 48Ca, 50Ti, 52Cr and 54Fe and the Shape and Magnitude of the M1 Strength Distributions

NUCLEAR REACTIONS 48Ca, 50Ti, 52Cr, 54Fe(e, e'), E=30-58 MeV; measured σ(E(e')), σ(θ). 50Ti, 52Cr, 54Fe deduced B(M1) strength distribution. 48Ca deduced total B(M1). Shell model.

doi: 10.1016/0370-2693(82)90987-X
Citations: PlumX Metrics


1981GR04      Nucl.Phys. A357, 269 (1981)

Th.Grundey, A.Richter, G.Schrieder, E.Spamer, W.Stock

Electroexcitation of the First Excited States in 39K and 41K

NUCLEAR REACTIONS 39,41K(e, e'), E=40-66 MeV; measured σ(E(e), θ). 39,41K levels deduced B(E2), B(M1).

doi: 10.1016/0375-9474(81)90221-9
Citations: PlumX Metrics


1981KU14      Phys.Lett. 104B, 189 (1981)

G.Kuhner, D.Meuer, S.Muller, A.Richter, E.Spamer, O.Titze, W.Knupfer

Electroexcitation of 208Pb, Distribution of Electric Dipole and Quadrupole Strength and Fragmentation of the Isoscalar Quadrupole Giant Resonance

NUCLEAR REACTIONS 208Pb(e, e'), E=30, 40, 50 MeV; measured σ(E(e')). 208Pb deduced B(E1), B(E2), electric dipole, T=0, GQR strength fragmentation, EWSR. Low momentum transfer, high resolution.

doi: 10.1016/0370-2693(81)90588-8
Citations: PlumX Metrics


1981ME12      Phys.Lett. 106B, 289 (1981)

D.Meuer, G.Kuhner, S.Muller, A.Richter, E.Spamer, O.Titze, W.Knupfer

Search for M1 and M2 Giant Resonances in 140Ce with High-Resolution Electron Scattering and Comments on a Recent Theoretical Prediction

NUCLEAR REACTIONS 140Ce(e, e'), E=40, 46, 50 MeV; measured σ(θ, E(e)). 140Ce deduced levels, 2- state fragmentation, B(M2), no evidence for M1 giant resonance. High resolution.

doi: 10.1016/0370-2693(81)90538-4
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1980AN18      Phys.Lett. B95, 31 (1980)

E.J.Ansaldo, C.Rangacharyulu, D.Bender, U.Kramer, A.Richter, E.Spamer, W.Knupfer

Electroexcitation of Isovector Magnetic Dipole and Quadrupole Transitions in 18O and Their Relation to Radiative Pion Capture.

NUCLEAR REACTIONS 18O(e, e'), E=45, 49, 54, 58, 59 MeV; measured σ(E(e')). 18O deduced levels, J, π, isospin, γ-multipolarity, B(λ). Enriched gas target.

doi: 10.1016/0370-2693(80)90392-5
Citations: PlumX Metrics


1980ME13      Nucl.Phys. A349, 309 (1980)

D.Meuer, R.Frey, D.H.H.Hoffmann, A.Richter, E.Spamer, O.Titze, W.Knupfer

High Resolution Inelastic Electron Scattering on 90Zr at Low Momentum Transfer and Strong Fragmentation of the Magnetic Quadrupole Strength

NUCLEAR REACTIONS 90Zr(e, e'), E=24-66 MeV; measured σ(E, θ). 90Zr deduced levels, transition strengths. Shell model calculations.

doi: 10.1016/0375-9474(80)90290-0
Citations: PlumX Metrics


1980ST17      Phys.Lett. B95, 23 (1980)

W.Steffen, H.-D.Graf, W.Gross, D.Meuer, A.Richter, E.Spamer, O.Titze, W.Knupfer

Backward-Angle High-Resolution Inelastic Electron Scattering on 40,42,44,48Ca and Observation of a Very Strong Magnetic Dipole Ground-State Transition in 48Ca

NUCLEAR REACTIONS 40,42,44,48Ca(e, e'), E=39 MeV; 48Ca(e, e'), E=30, 50 MeV; measured σ(E(e')). 40,42,48Ca deduced 1+ state, B(M1). Enriched targets.

doi: 10.1016/0370-2693(80)90390-1
Citations: PlumX Metrics


1979GR09      Phys.Lett. 84B, 296 (1979)

W.Gross, D.Meuer, A.Richter, E.Spamer, O.Titze, W.Knupfer

A Strong Magnetic Dipole Excitation in 40Ca Observed in High-Resolution Inelastic Electron Scattering and Coherent Spin-Flip Transitions Due To Ground-State Correlations

NUCLEAR REACTIONS 40Ca(e, e'), E=44, 50 MeV; measured σ(Ee'). 40Ca level deduced strong M1 transition. Coherent spin-flip transitions, ground state correlation interpretation.

doi: 10.1016/0370-2693(79)90043-1
Citations: PlumX Metrics


1979SC14      Nucl.Phys. A323, 13 (1979)

R.Schneider, A.Richter, A.Schwierczinski, E.Spamer, O.Titze, W.Knupfer

High Resolution Inelastic Electron Scattering on 28Si at Low Momentum Transfer and Isovector M1 Strength in 28Si

NUCLEAR REACTIONS 28Si(e, e'), E=38.7-57.5 MeV; measured σ(E, θ). 28Si deduced levels, transition probability. Shell-model calculations.

doi: 10.1016/0375-9474(79)90413-5
Citations: PlumX Metrics


1978FR03      Nucl.Phys. A294, 129 (1978)

A.Friebel, P.Manakos, A.Richter, E.Spamer, W.Stock, O.Titze

Inelastic Electron Scattering, Radiative Width and Magnetization Density on the 2+, T = 1 State at 16.11 MeV in 12C

NUCLEAR REACTIONS 12C(e, e'), E=32.8-62.2 MeV; measured σ(E, θ). 12C level deduced Γγ, magnetization density. Shell model.

doi: 10.1016/0375-9474(78)90399-8
Citations: PlumX Metrics


1978FR06      Phys.Lett. 74B, 45 (1978)

R.Frey, A.Richter, A.Schwierczinski, E.Spamer, O.Titze, W.Knupfer

High-Resolution Inelastic Electron Scattering on 208Pb at 50 and 63.5 MeV and Fragmentation of the Magnetic Quadrupole Strength

NUCLEAR REACTIONS 208Pb(e, e'), E=50, 63.5 MeV; measured σ(θ). 208Pb deduced levels, B(M2).

doi: 10.1016/0370-2693(78)90055-2
Citations: PlumX Metrics


1978GR02      Nucl.Phys. A295, 319 (1978)

H.D.Graf, H.Feldmeier, P.Manakos, A.Richter, E.Spamer, D.Strottman

Study of Electic Monopole Transitions between the Ground State and the First Excited 0+ State in 40,42,44,48Ca with High Resolution Inelastic Electron Scattering

NUCLEAR REACTIONS 40,42,44,48Ca(e, e'), E=31-67 MeV; measured σ(E;Ee';θ). 40,42,44,48Ca 0+ level deduced E0 matrix elements. Shell model calculation.

doi: 10.1016/0375-9474(78)90120-3
Citations: PlumX Metrics


1978GR03      Phys.Lett. 72B, 179 (1978); see also 77Gr26

H.D.Graf, V.Heil, A.Richter, E.Spamer, W.Stock, O.Titze

Isospin Forbidden Electroexcitation of the 1-, T = 0 State at 6.95 MeV in 40Ca, Continuum Shell-Model and Effective Charge of the Convection Current

NUCLEAR REACTIONS 40Ca(e, e'), E=31-67 MeV; measured σ(E, θ). 40Ca level deduced form factor.

doi: 10.1016/0370-2693(77)90696-7
Citations: PlumX Metrics


1978KN03      Phys.Lett. 77B, 367 (1978)

W.Knupfer, R.Frey, A.Friebel, W.Mettner, D.Meuer, A.Richter, E.Spamer, O.Titze

Electroexcitation of M2 Giant Resonances, Mass Dependent Quenching of The Spin-Magnetism and the Reduction of M1 Strength in Heavy Nuclei

NUCLEAR STRUCTURE 28Si, 90Zr, 208Pb; calculated M2 giant resonance.

doi: 10.1016/0370-2693(78)90579-8
Citations: PlumX Metrics


1977GR26      Phys.Lett. 72B, 179 (1977)

H.D.Graf, V.Heil, A.Richter, E.Spamer, W.Stock, O.Titze

Isospin Forbidden Electroexcitation of the 1-, T=0 State at 6.95 MeV in 40Ca, Continuum Shell-Model and Effective Charge of the Convection Current

NUCLEAR REACTIONS 40Ca(e, e'), E=31-67 MeV; measured σ(E, θ). 40Ca level deduced form factor.

doi: 10.1016/0370-2693(77)90696-7
Citations: PlumX Metrics


1975MI08      Phys.Lett. 58B, 155 (1975)

H.Miska, H.D.Graf, A.Richter, R.Schneider, D.Schull, E.Spamer, H.Theissen, O.Titze, T.Walcher

High Resolution Inelastic Electron Scattering and Radiation Widths of Levels in 16O

NUCLEAR REACTIONS 16O(e, e'), E=38-60 MeV; measured σ(E, Ee', θ). 16O levels deduced γ-width.

doi: 10.1016/0370-2693(75)90626-7
Citations: PlumX Metrics


1975MI13      Phys.Lett. 59B, 441 (1975)

H.Miska, H.D.Graf, A.Richter, D.Schull, E.Spamer, O.Titze

Isospin-Forbidden Electroexcitation of the 1-, T=0 State at 7.12 MeV in 16O at Low Momentum Transfers

NUCLEAR REACTIONS 16O(e, e'), E=38-60 MeV; measured σ(E, θ); deduced form factor.

doi: 10.1016/0370-2693(75)90341-X
Citations: PlumX Metrics


1975SC03      Phys.Lett. 55B, 171 (1975)

A.Schwierczinski, R.Frey, E.Spamer, H.Theissen, T.Walcher

Inelastic Electron Scattering from the Giant Isoscalar E2-Resonance in 142Nd and 150Nd

NUCLEAR REACTIONS 142,150Nd(e, e'), E=50, 64.3 MeV; measured σ(Ee'). 142,150Nd deduced resonances, level-width.

doi: 10.1016/0370-2693(75)90435-9
Citations: PlumX Metrics


1975SC33      Phys.Rev.Lett. 35, 1244 (1975)

A.Schwierczinski, R.Frey, A.Richter, E.Spamer, H.Theissen, O.Titze, T.Walcher, S.Krewald, R.Rosenfelder

Multipole Assignment of the 8.9-MeV Resonance in 208Pb

NUCLEAR REACTIONS 208Pb(e, e'), E=50 MeV; measured σ(Ee', θ); analyzed previous data. 208Pb deduced resonances, B(λ), Γ.

doi: 10.1103/PhysRevLett.35.1244
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1970TI01      Phys.Lett. 31B, 565 (1970)

O.Titze, A.Goldmann, E.Spamer

Splitting of the Giant Resonance in 26Mg

NUCLEAR REACTIONS 26Mg(e, e') E=51, 52, 54 MeV; measured σ(Ee'). 26Mg deduced splitting of E1 giant resonance.

doi: 10.1016/0370-2693(70)90694-5
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1968CL08      Nucl.Phys. A120, 441 (1968)

H.-G.Clerc, K.J.Wetzel, E.Spamer

Inelastic Electron Scattering from 9Be: Levels below 10 MeV

NUCLEAR REACTIONS 9Be(e, e'), Ee=25-58 MeV, θ=105°-165°; measured σ(Ee, Ee', θ). 9Be deduced levels, π, level-width.

doi: 10.1016/0375-9474(68)90777-X
Citations: PlumX Metrics


1967SP02      Z.Physik 198, 445 (1967)

E.Spamer, H.Artus

Unelastische Elektronenstreuung am 4, 46 und 5, 04 Mev-Niveau des B11

NUCLEAR STRUCTURE 11B; measured not abstracted; deduced nuclear properties.

doi: 10.1007/BF01325973
Citations: PlumX Metrics


1967TI03      Phys.Letters 24B, 169 (1967)

O.Titze, E.Spamer, A.Goldmann

Structure of the Giant Resonance of 24Mg

NUCLEAR STRUCTURE 24Mg; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0370-2693(67)90481-9
Citations: PlumX Metrics


1966CL01      Phys.Letters 20, 667 (1966)

H.G.Clerc, K.J.Wetzel, E.Spamer

Excitation of New Electromagnetic Transitions in 9Be Inelastic Electron Scattering

NUCLEAR STRUCTURE 9Be; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0031-9163(66)91165-6
Citations: PlumX Metrics


1966SP02      Z.Physik 191, 24 (1966)

E.Spamer

Untersuchung Einiger Kernniveaus des B10 und B11 durch Unelastische Elektronenstreuung

NUCLEAR STRUCTURE 11B, 10B; measured not abstracted; deduced nuclear properties.

doi: 10.1007/BF01362466
Citations: PlumX Metrics


1966TI02      Z.Naturforsch. 21a, 1504 (1966)

O.Titze, E.Spamer

Inelastic Electron Scattering from Levels with 7 to 15 MeV Excitation Energy in 24Mg and 26Mg

NUCLEAR STRUCTURE 24Mg, 26Mg; measured not abstracted; deduced nuclear properties.


1965SP04      Phys.Letters 14, 210 (1965)

E.Spamer, F.Gudden

Excitation of an M1 Transition in B10 at 7.48 MeV by Inelastic Electron Scattering

NUCLEAR STRUCTURE 10B; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0031-9163(65)90593-7
Citations: PlumX Metrics


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