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NSR database version of April 27, 2024.

Search: Author = O.Schwentker

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1995HI14      J.Phys.(London) G21, 639 (1995)

K.-H.Hiddemann, H.Daniel, O.Schwentker

Limits on Neutrino Masses from the Tritium β Spectrum

RADIOACTIVITY ³H(β^-); measured β spectra; deduced electron antineutrino mass. ³H, ³He deduced mass difference. Tritium in atomic form embedded in a metal dioxide lattice, π square root (13/2) spectrometer calibrated using ¹⁶⁹Yb source.

doi: 10.1088/0954-3899/21/5/008
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1987PA14      Phys.Rev.Lett. 58, 2296 (1987)

C.N.Papanicolas, L.S.Cardman, J.H.Heisenberg, O.Schwentker, T.E.Milliman, F.W.Hersman, R.S.Hicks, G.A.Peterson, J.S.McCarthy, J.Wise, B.Frois

Magnetic Form Factors of ²⁰⁵Tl and ²⁰⁷Pb: Establishing the limits of mean-field theory

NUCLEAR REACTIONS ²⁰⁵Tl, ²⁰⁷Pb(e, e), E not given; measured magnetic form factors, σ. ²⁰⁵Tl, ²⁰⁷Pb deduced quenching mechanism, ground state magnetization densities. Independent particle model calculations.

doi: 10.1103/PhysRevLett.58.2296
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1985WI06      Phys.Rev. C31, 1699 (1985)

J.E.Wise, J.S.McCarthy, R.Altemus, B.E.Norum, R.R.Whitney, J.Heisenberg, J.Dawson, O.Schwentker

Inelastic Electron Scattering from ⁴⁸Ca

NUCLEAR REACTIONS ⁴⁸Ca(e, e'), E=149.6-288.8 MeV; measured form factor, σ(E(e')); deduced σ(θ). ⁴⁸Ca levels deduced transition charge, current densities. RPA calculation.

doi: 10.1103/PhysRevC.31.1699
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1984HE02      Phys.Rev. C29, 97 (1984)

J.Heisenberg, J.Dawson, T.Milliman, O.Schwentker, J.Lichtenstadt, C.N.Papanicolas, J.Wise, J.S.McCarthy, N.Hintz, H.P.Blok

Excitation of Positive-Parity States in Electron Scattering from ⁹⁰Zr

NUCLEAR REACTIONS ⁹⁰Zr(e, e'), E=70-368 MeV; measured σ(θ), σ(E(e')); deduced g_9/2 proton orbit radius. ⁹⁰Zr levels deduced charge distribution, transition charge densities, M7 transition current density. DWBA analysis.

doi: 10.1103/PhysRevC.29.97
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1984VA16      J.Phys.(Paris), Colloq.C4, 465 (1984); See 1984Va42

L.T.van der Bijl, H.Blok, H.P.Blok, R.Ent, J.Heisenberg, O.Schwentker, A.Richter, P.K.A.de Witt Huberts

Electro-Excitation of the 1⁺ State at 3.486 MeV in ⁸⁸Sr

1984VA21      Nucl.Phys. A423, 365 (1984)

L.T.Van Der Bijl, H.Blok, H.P.Blok, R.Ent, J.Heisenberg, O.Schwentker, A.Richter, P.K.A.De Witt Huberts

Electro-Excitation of the 1⁺ State at E(x) = 3.486 MeV in ⁸⁸Sr

NUCLEAR REACTIONS ⁸⁸Sr(e, e'), E=23.7-261.6 MeV; measured σ(θ), σ(E(e')); deduced form factor, core, isobar-hole polarization effects.

doi: 10.1016/0375-9474(84)90029-0
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1984VA42      J.Phys.(Paris), Colloq.C-4, 465 (1984)

L.T.van der Bijl, H.Blok, H.P.Blok, R.Ent, J.Heisenberg, O.Schwentker, A.Richter, P.K.A.de Witt Huberts

Electro-Excitation of the 1⁺ State at 3, 486 MeV in ⁸⁸Sr

NUCLEAR REACTIONS ⁸⁸Sr(e, e'), E=81.4, 209.5 MeV; measured σ(Ee', θe'), form factor. ⁸⁸Sr transition deduced B(M1) reduction. Enriched target. Theoretical analyses.

1983SC01      Phys.Rev.Lett. 50, 15 (1983)

O.Schwentker, J.Dawson, J.Robb, J.Heisenberg, J.Lichtenstadt, C.N.Papanicolas, J.Wise, J.S.McCarthy, L.T.van der Bijl, H.P.Blok

E2 Transition Densities and Proton Shell Structure in ⁸⁸Sr, ⁸⁹Y, and ⁹⁰Zr

NUCLEAR REACTIONS ⁸⁸Sr, ⁸⁹Y, ⁹⁰Zr(e, e'), E not given; measured σ(θ). ⁸⁹Y, ⁹⁰Zr levels deduced E2 transition charge densities. ⁸⁸Sr levels deduced spectroscopic amplitudes, E2 transition charge densities. Fourier-Bessel expansion, RPA, broken pair calculations.

doi: 10.1103/PhysRevLett.50.15
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1982SC08      Phys.Lett. 112B, 40 (1982)

O.Schwentker, J.Dawson, S.McCaffrey, J.Robb, J.Heisenberg, J.Lichtenstadt, C.N.Papanicolas, J.Wise, J.S.McCarthy, N.Hintz, H.P.Blok

Measurement of the Effective E5 Single-Particle Transition Densities in ⁸⁹Y and ⁹⁰Zr

NUCLEAR REACTIONS ⁸⁹Y, ⁹⁰Zr(e, e'), E not given; measured σ(θ) vs momentum transfer. ⁸⁹Y, ⁹⁰Zr level deduced effective E5 transition charge, current densities, configuration.

doi: 10.1016/0370-2693(82)90901-7
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1980WO02      Phys.Rev. C22, 264 (1980)

H.D.Wohlfahrt, O.Schwentker, G.Fricke, H.G.Andresen, E.B.Shera

Systematics of Nuclear Charge Distributions in the Mass 60 Region from Elastic Electron Scattering and Muonic X-Ray Measurements

NUCLEAR REACTIONS ^54,56,58Fe, ^58,60,62,64Ni, ^64,66,68,70Zn(e, e), E=100, 150, 275 MeV; measured σ(θ); deduced model-independent isotone, isotope charge distribution differences. Hartree-Fock calculations.

ATOMIC PHYSICS ^54,56,58Fe, ^58,60,62,64Ni, ^64,66,68,70Zn; analyzed muonic X-ray, electron scattering data; deduced model-independent rms radii differences.

doi: 10.1103/PhysRevC.22.264
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1977EU02      Phys.Rev. C16, 1703 (1977)

H.Euteneuer, H.Rothhaas, O.Schwentker, J.R.Moreira, C.W.de Jager, L.Lapikas, H.de Vries, J.Flanz, K.Itoh, G.A.Peterson, D.V.Webb, W.C.Barber, S.Kowalski

Elastic Electron Scattering from the Multipole Moment Distributions of ²⁵Mg

NUCLEAR REACTIONS ²⁵Mg(e, e), E=40-260 MeV; measured σ(E, θ). ²⁵Mg deduced multipole moments.

doi: 10.1103/PhysRevC.16.1703
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