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NSR database version of May 24, 2024.

Search: Author = O.Schwentker

Found 11 matches.

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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 g9/2 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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