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NSR database version of May 30, 2024.

Search: Author = T.J.Ketel

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2016KR01      Phys.Rev.Lett. 116, 042501 (2016)

A.J.Krasznahorkay, M.Csatlos, L.Csige, Z.Gacsi, J.Gulyas, M.Hunyadi, I.Kuti, B.M.Nyako, L.Stuhl, J.Timar, T.G.Tornyi, Zs.Vajta, T.J.Ketel, A.Krasznahorkay

Observation of Anomalous Internal Pair Creation in 8Be: A Possible Indication of a Light, Neutral Boson

NUCLEAR REACTIONS 7Li(p, γ), E=0.441, 1.03 MeV; measured reaction products, Eβ, Iβ, Eγ, Iγ; deduced total energy spectrum and angular correlation of the electron-positron pairs for the isovector magnetic dipole to the ground state transitions, invariant mass distribution, neutral isoscalar particle mass. Comparison with available data.

doi: 10.1103/PhysRevLett.116.042501
Citations: PlumX Metrics

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2008VI02      Acta Phys.Pol. B39, 483 (2008)

A.Vitez, A.Krasznahorkay, J.Gulyas, M.Csatlos, L.Csige, Z.Gacsi, A.Krasznahorkay, Jr., B.M.Nyako, F.W.N.de Boer, T.J.Ketel, J.van Klinken

Anomalous Internal Pair Creation in 8Be as a Signature of the Decay of a New Particle

RADIOACTIVITY 8Be [from 7Li(p, γ), E=441 keV]; measured angular distribution of the e+e- pairs from the M1 decay of the 17.64 MeV state. Compared results to model calculations and previous measurement.


2005ST30      Phys.Rev.Lett. 95, 172501 (2005)

M.F.M.Steenbakkers, M.F.van Batenburg, Th.S.Bauer, H.P.Blok, T.Botto, G.E.Dodge, D.L.Groep, P.Heimberg, W.H.A.Hesselink, D.W.Higinbotham, E.Jans, Y.Jun, T.J.Ketel, L.Lapikas, D.J.J.de Lange, B.E.Norum, I.Passchier, R.Starink, L.Todor, H.de Vries

Quasifree π0 and π- Electroproduction on 4He in the Δ-Resonance Region

NUCLEAR REACTIONS 4He(e, e'pπ-), (e, e'pπ0), E=672 MeV; measured Ep, recoil spectra, σ(θ). Comparison with model predictions.

doi: 10.1103/PhysRevLett.95.172501
Citations: PlumX Metrics


2003HA46      Phys.Rev.Lett. 91, 014801 (2003)

H.D.Hansen, U.I.Uggerhoj, C.Biino, S.Ballestrero, A.Mangiarotti, P.Sona, T.J.Ketel, Z.Z.Vilakazi

Is the Electron Radiation Length Constant at High Energies?

NUCLEAR REACTIONS Ir(e, e'γ), E=149, 207, 287 GeV; measured bremsstrahlung spectra; deduced effective radiation length.

doi: 10.1103/PhysRevLett.91.014801
Citations: PlumX Metrics


1998KE04      Acta Phys.Pol. B29, 1265 (1998)

T.J.Ketel, for the Spin Muon Collaboration at CERN

Experimental Results on Polarized Nucleon Structure Functions

NUCLEAR REACTIONS 1n, 1,2H(e, X), (e+, X), 1,2H(μ+, X), E=high; reviewed, analyzed structure function data. Polarized targets.


1998VA05      Nucl.Phys. A631, 545c (1998)

M.J.M.van Sambeek, T.Botto, T.Bauer, H.P.Blok, D.Boersma, G.E.Dodge, D.Groep, P.Heimberg, W.H.A.Hesselink, D.W.Higinbotham, C.W.de Jager, E.Jans, T.J.Ketel, D.J.J.de Lange, L.Lapikas, B.E.Norum, I.Passchier, V.M.Pugatch, M.F.M.Steenbakkers, J.J.M.Steijger, L.Todor, P.Ulmer, H.de Vries, K.Wang

Coherent π0 Electroproduction on 4He in the Δ Region

NUCLEAR REACTIONS 4He(e, e'π0), E=676 MeV; measured missing energy distribution, σ(θ(pion)).

doi: 10.1016/S0375-9474(98)00065-7
Citations: PlumX Metrics


1997VA01      Nucl.Phys. A612, 391 (1997)

H.B.van den Brink, H.P.Blok, I.Bobeldijk, G.E.Dodge, C.W.de Jager, W.-J.Kasdorp, T.J.Ketel, L.Lapikas, B.E.Norum, M.van Sambeek, G.van der Steenhoven, M.A.van Uden, H.de Vries

Electroproduction of Neutral Pions on the Proton

NUCLEAR REACTIONS 1H(e, e'π0), E=525 MeV; measured σ(θ(π0)) 1-14 MeV above threshold; deduced s-wave multipoles E(0+) and L(0+). Chiral perturbation theory, Lagrangian models.

doi: 10.1016/S0375-9474(96)00397-1
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1995VA10      Phys.Rev.Lett. 74, 3561 (1995)

H.B.van den Brink, H.P.Blok, I.Bobeldijk, M.Bouwhuis, G.E.Dodge, M.N.Harakeh, W.H.A.Hesselink, D.G.Ireland, C.W.de Jager, E.Jans, N.de Jonge, N.Kalantar-Nayestanaki, W.-J.Kasdorp, T.J.Ketel, J.Konijn, L.Lapikas, J.J.van Leeuwe, R.L.J.van der Meer, G.J.L.Nooren, B.E.Norum, E.Passchier, A.R.Pellegrino, C.M.Spaltro, G.van der Steenhoven, J.J.M.Steijger, J.A.Templon, J.A.P.Theunissen, M.A.van Uden, H.de Vries, R.de Vries, P.K.A.de Witt Huberts

Neutral-Pion Electroproduction on the Proton Near Threshold

NUCLEAR REACTIONS 1H(e, e'π0), E=525 MeV; measured σ(θ(e'), E(e'), θ(π)); deduced s-wave multipoles. Modes comparison.

doi: 10.1103/PhysRevLett.74.3561
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1985BE31      Phys.Lett. 158B, 19 (1985)

R.Bertini, P.Birien, K.Braune, W.Bruckner, G.Bruge, H.Catz, A.Chaumeaux, J.Ciborowski, H.Dobbeling, J.M.Durand, R.W.Frey, D.Garreta, S.Janouin, T.J.Ketel, K.Kilian, H.Kneis, S.Majewski, B.Mayer, J.C.Peng, B.Povh, R.D.Ransome, R.Szwed, T.-A.Shibata, A.Thiessen, M.Treichel, M.Uhrmacher, Th.Walcher, and the Heidelberg-Saclay Collaboration

The (K-, π+) Strangeness Exchange Reaction on 16O

NUCLEAR REACTIONS 12C, 16O(K-, π+), E at 450 MeV/c; measured σ(E(π)); deduced Σ hypernuclear states.

doi: 10.1016/0370-2693(85)90730-0
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1985TA10      Phys.Lett. 156B, 296 (1985)

A.Taal, J.F.M.D'Achard van Enschut, J.B.R.Berkhout, W.Duinker, C.W.E.Van Eijk, W.H.A.Hesselink, P.J.van den Hoek, T.J.Ketel, J.H.Koch, J.Konijn, C.T.A.M.de Laat, W.Lourens, G.van Middelkoop, W.Poeser, T.Prins, A.H.Wapstra

Anomalous Strong Interaction in Pionic Mg

NUCLEAR REACTIONS Mg(π-, X), E at rest; measured pionic E X-ray, I X-ray; deduced strong interaction shifts, widths, anomalies.

ATOMIC PHYSICS, Mesic-Atoms Mg; measured pionic X-rays; deduced strong interaction shifts, widths, anomalies.

doi: 10.1016/0370-2693(85)91612-0
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1984BE07      Phys.Lett. 136B, 29 (1984)

R.Bertini, P.Birien, K.Braune, W.Bruckner, G.Bruge, H.Catz, A.Chaumeaux, J.Ciborowski, H.Dobbeling, J.M.Durand, R.W.Frey, D.Garreta, S.Janouin, T.J.Ketel, K.Kilian, H.Kneis, S.Majewski, B.Mayer, J.C.Peng, B.Povh, R.D.Ransome, R.Szwed, T.-A.Shibata, A.Thiessen, M.Treichel, M.Uhrmacher, Th.Walcher

Sigma Hypernuclear States in (K-, π(±)) Reactions on 12C

NUCLEAR REACTIONS 12C(K-, π+), (K-, π-), E at 400, 450 MeV/c; measured hypernuclear mass spectra; deduced Sigma hypernuclear states in 12C.

doi: 10.1016/0370-2693(84)92049-5
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1984DA02      Phys.Lett. 136B, 24 (1984)

J.F.M.d'Achard van Enschut, J.B.R.Berkhout, W.Duinker, C.W.E.van Eijk, W.H.A.Hesselink, T.Johansson, T.J.Ketel, J.H.Koch, J.Konijn, C.T.A.M.de Laat, W.Lourens, G.van Middelkoop, W.Poeser

Anomalous Strong Interaction Shifts and Widths of the 3d State in Pionic Pt and Au

ATOMIC PHYSICS, Mesic-Atoms Pt, Au; measured pionic E X-ray, I X-ray; deduced strong interaction monopole shifts, widths.

doi: 10.1016/0370-2693(84)92048-3
Citations: PlumX Metrics


1981BE17      Nucl.Phys. A360, 315 (1981)

R.Bertini, O.Bing, P.Birien, K.Braune, W.Bruckner, H.Catz, A.Chaumeaux, M.A.Faessler, R.-W.Frey, D.Garreta, T.J.Ketel, K.Kilian, B.Mayer, J.Niewisch, B.Pietrzyk, B.Povh, H.G.Ritter, M.Uhrmacher

Hypernuclear Production in the (K-, π-) Reaction

NUCLEAR REACTIONS 6,7Li, 9Be, 40Ca(K-, π-), E at 790 MeV/c; 7Li, 9Be, 12C, 16O, 27Al, 32S, 51V, 89Y(K-, π-), E at 720 MeV/c; 209Bi(K-, π-), E at 640 MeV/c; measured σ(θ); deduced production σ for hypernuclei, effective neutron number in one-step strangeness exchange. DWIA.

doi: 10.1016/0375-9474(81)90149-4
Citations: PlumX Metrics


1981BE45      Nucl.Phys. A368, 365 (1981)

R.Bertini, O.Bing, P.Birien, K.Braune, W.Bruckner, A.Chaumeaux, M.A.Faessler, R.W.Frey, D.Garreta, T.J.Ketel, K.Kilian, B.Mayer, J.Niewisch, B.Pietrzyk, B.Povh, H.G.Ritter, M.Uhrmacher

Neutron Hole States in 6Li, 7Li, 9Be and 12C Hypernuclei

NUCLEAR REACTIONS 6,7Li, 9Be, 12C(K-, π-), E at 720-790 MeV/c; measured σ(lambda particle binding energy, θ); deduced neutron hole states in hypernuclei.

doi: 10.1016/0375-9474(81)90761-2
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1980BE12      Phys.Lett. 90B, 375 (1980)

R.Bertini, O.Bing, P.Birien, W.Bruckner, H.Catz, A.Chaumeaux, J.M.Durand, M.A.Faessler, T.J.Ketel, K.Kilian, B.Mayer, J.Niewisch, B.Pietrzyk, B.Povh, H.G.Ritter, M.Uhrmacher

Hypernuclei with Sigma Particles

NUCLEAR REACTIONS 9Be(K-, π-), E at 720 MeV/c; measured σ(λ particle binding energy), production σ for Σ particle; deduced λ-particle, Σ-particle shell spacing.

doi: 10.1016/0370-2693(80)90952-1
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1979BE17      Phys.Lett. 83B, 306 (1979)

R.Bertini, O.Bing, P.Birien, W.Bruckner, H.Catz, A.Chaumeaux, J.M.Durand, M.A.Faessler, T.J.Ketel, K.Kilian, B.Mayer, J.Niewisch, B.Pietrzyk, B.Povh, H.G.Ritter, M.Uhrmacher

A Full Set of Nuclear Shell Orbitals for the lambda Particle Observed in 32S and 40Ca

NUCLEAR REACTIONS 32S(K-, π-), E at 720 MeV/c; 40Ca(K-, π-), E at 790 MeV/c; measured σ(λ-particle binding energy, θ); deduced λ-particle shell spacing.

doi: 10.1016/0370-2693(79)91113-4
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1979KA05      Nucl.Phys. A315, 334 (1979)

A.W.B.Kalshoven, W.H.A.Hesselink, T.J.Ketel, J.Ludziejewski, L.K.Peker, J.J.van Ruyven, H.Verheul

High Spin States in 105Ag

NUCLEAR REACTIONS 103Rh(α, 2nγ), E=17-32 MeV; measured Eγ, Iγ, γ(θ), linear polarization, αγ(t), γγ(t), I(ce), μ. 105Ag deduced levels, J, π, T1/2, B(λ). Ge(Li), Si(Li) detectors.

doi: 10.1016/0375-9474(79)90615-8
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1979KE07      Z.Phys. A291, 319 (1979)

T.J.Ketel, E.A.Z.M.Vervaet, H.Verheul

Half-Life, g-Factor and Relaxation of the Nuclear Orientation of the Isomeric 11/2- State in 139Pr

NUCLEAR REACTIONS 140Ce(p, 2nγ), E=20 MeV; measured γ(θ, H, t). 139Pr level deduced T1/2, g-factor, relaxation time.

doi: 10.1007/BF01408380
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1979KO02      Z.Phys. A289, 287 (1979)

J.Konijn, T.J.Ketel, H.Verheul

The g-Factor of the 19/2- Isomeric State in 115Sb

NUCLEAR REACTIONS 113In(α, 2nγ), E=28 MeV; measured γ(θ, B, t). 115mSb level deduced J, π, g.

doi: 10.1007/BF01415790
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1978KE04      Z.Phys. A285, 177 (1978)

T.J.Ketel, E.A.Z.M.Vervaet, H.Verheul

Half-Life and g-Factor Ofthe 11/2- Isomeric States in 115Sb and 117Sb

NUCLEAR REACTIONS 116,118Sn(p, 2nγ), E=20 MeV; measured γ(θ, H, t). 115,117Sb levels deduced T1/2, g.

doi: 10.1007/BF01408744
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1976KA19      Nucl.Phys. A266, 346 (1976)

R.Kamermans, H.W.Jongsma, T.J.Ketel, R.van der Wey, H.Verheul

Level Properties of the Light Even Sb Nuclei 112,114,116Sb

NUCLEAR REACTIONS 112Sn(p, nγ), E=7.2-10.4, 15 MeV; 114Sn(p, nγ), E=6.3-8.4, 15 MeV; 116Sn(p, nγ), E=5.2-7.4, 15 MeV; measured Eγ, Iγ, γ(t), nγ-coin, γγ-coin, σ(E, Eγ); deduced Q. 115In(3He, xnγ), E=72 MeV; measured E(ce), I(ce). 112,114,116Sb deduced levels, J, π, T1/2. Hauser-Feshbach analysis, enriched targets, Ge(Li), Si(Li) detectors.

doi: 10.1016/0375-9474(76)90363-8
Citations: PlumX Metrics


1976KA25      Z.Phys. A279, 99 (1976)

R.Kamermans, T.J.Ketel, H.Verheul

Excited States of the Odd-A Sb Isotopes 115,113,111Sb

NUCLEAR REACTIONS 112Sn(p, 2nγ), E=16.6-20.2, 28 MeV; 114Sn(p, 2nγ), E=15.8-18.2, 20, 28 MeV; 116Sn(p, 2nγ), E=14.0-16.1, 20, 28 MeV; measured Eγ, Iγ, γ(t), nγ-, γγ-coin, σ(E, Eγ). 111,113,115Sb deduced levels, J, π, T1/2. Enriched targets. Ge(Li) detectors.

doi: 10.1007/BF01409096
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1976KE07      Hyperfine Interactions 2, 336 (1976)

T.J.Ketel, R.Kamermans, E.A.Z.M.Vervaet, H.Verheul

Half-Life and Magnetic Moment of the 8- States in 112Sb and 114Sb

NUCLEAR REACTIONS 112,114Sn(p, nγ), E=17 MeV; measured γ(θ, H, t), stroboscopic resonance. 112,114Sb levels deduced T1/2, g. 112Sb transition deduced δ.

doi: 10.1007/BF01021164
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1972DU03      Nucl.Phys. A182, 433 (1972)

G.H.Dulfer, T.J.Ketel, V.A.van Rooijen, M.E.J.Wigmans, H.Verheul

The Decay of 65Ga

RADIOACTIVITY 65Ga[from 64Zn(d, n)]; measured Eγ, Iγ, γ-γcoin. 65Zn deduced levels, J, π. Ge(Li), Si(Li) detectors, scintillators. Enriched, natural targets;mass-separated source.

doi: 10.1016/0375-9474(72)90290-4
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1972DU09      Z.Phys. 251, 416 (1972)

G.H.Dulfer, B.O.ten Brink, T.J.Ketel, A.W.B.Kalshoven, H.Verheul

On the Decay of 61Zn and 60Zn Using Mass Separated Sources

RADIOACTIVITY 60,61Zn; measured T1/2, Eγ, Iγ; deduced log ft. 60,61Cu; measured T1/2. 60,61Cu deduced levels, J, π, γ-branching.

doi: 10.1007/BF01391735
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