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Search: Author = J.Keinonen

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2013MI01      Nucl.Instrum.Methods Phys.Res. B300, 1 (2013)

K.Mizohata, J.Raisanen, J.Keinonen, E.Harkonen, J.Palmans, M.Ritala

Stopping cross sections of atomic layer deposited Al2O3 and Ta2O5 and of Si3N4 for 12C, 16O, 35Cl, 79Br and 127I ions

NUCLEAR REACTIONS Al, Ta, Si(12C, X), (16O, X), (35Cl, X), (79Br, X), (127I, X), E=0.03-1 Mev/nucleon; measured reaction products, TOF, ion energy spectra; deduced stopping σ. Comparison with available data.

doi: 10.1016/j.nimb.2013.02.010
Citations: PlumX Metrics


1998KA31      Phys.Rev. C58, 699 (1998)

A.Kangasmaki, P.Tikkanen, J.Keinonen, W.E.Ormand, S.Raman, Zs.Fulop, A.Z.Kiss, E.Somorjai

Lifetimes of 32S Levels

NUCLEAR REACTIONS 2H(31P, n), E=24, 29 MeV; 28Si(6Li, np), E=8, 12 MeV; 31P(p, γ), E=1.0-1.6 MeV; measured Doppler-broadened Eγ, Iγ. 32S levels deduced T1/2, branching ratios, δ, B(E2), B(M1). DSA analysis, Monte Carlo simulations.

NUCLEAR STRUCTURE 32S; calculated levels, T1/2, δ. Shell model.

doi: 10.1103/PhysRevC.58.699
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1997KA15      Phys.Rev. C55, 1697 (1997)

A.Kangasmaki, P.Tikkanen, J.Keinonen, W.E.Ormand, S.Raman

Lifetimes of 32P Levels

NUCLEAR REACTIONS 2H(31P, p), E ≈ 24, 29 MeV; measured Eγ, Iγ, DSA. 32P deduced levels, J, π, γ-multipolarity, δ(E2/M1), γ-branching ratio, B(λ). Shell model.

doi: 10.1103/PhysRevC.55.1697
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1996FU07      Nucl.Phys. A604, 286 (1996)

Zs.Fulop, G.Levai, E.Somorjai, A.Z.Kiss, J.Cseh, P.Tikkanen, J.Keinonen

A Comprehensive Study of the 34S + α System

NUCLEAR REACTIONS, ICPND 34S(α, γ), E=3.4-4.4 MeV; measured γ yield vs E. 38Ar deduced levels, J, π, B(λ). Implanted target. Semimicroscopic algebraic cluster model, dynamic symmetry.

doi: 10.1016/0375-9474(96)00173-X
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1996RA04      Phys.Rev. C53, 616 (1996)

S.Raman, E.K.Warburton, J.W.Starner, E.T.Jurney, J.E.Lynn, P.Tikkanen, J.Keinonen

Spectroscopy of 20F Levels

NUCLEAR REACTIONS 19F(n, γ), E=thermal; measured Eγ, Iγ. 20F deduced levels, J, π, γ-branching ratios, spectroscopic strengths, γ multipolarity. Other reaction data input.

doi: 10.1103/PhysRevC.53.616
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13745.


1994KA26      Phys.Rev. C50, 1370 (1994)

A.Kangasmaki, P.Tikkanen, J.Keinonen

Short Lifetimes in 28Al

NUCLEAR REACTIONS 2H(27Al, p), E=15, 16, 29 MeV; measured Eγ, DSA. 28Al levels deduced T1/2. Implanted, enriched 2H targets.

doi: 10.1103/PhysRevC.50.1370
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1994PE26      Nucl.Instrum.Methods Phys.Res. B89, 346 (1994)

L.Persson, H.J.Whitlow, J.Keinonen, P.Torri, I.Maximov, L.Samuelsson, J.Knox, K.G.Malmqvist

1H(15N, αγ)12C Nuclear Resonance Broadening Measurements of Hydrogen Incorporation During Plasma Etching of GaAs and Ga(x)In(1-x)As Quantum Wells

NUCLEAR REACTIONS 1H(15N, αγ), E=6.385 MeV; measured photoluminescene spectra, hydrogen incorporation during plasma etching of GaAs, Ga(x)In(1-x) quantum wells.

doi: 10.1016/0168-583X(94)95197-7
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1994RA17      Phys.Rev. C50, 682 (1994)

S.Raman, E.T.Jurney, J.W.Starner, A.Kuronen, J.Keinonen, K.Nordlund, D.J.Millener

Lifetimes in 15N from Gamma-Ray Line Shapes Produced in the 2H(14N, pγ) and 14N(thermal n, γ) Reactions

NUCLEAR REACTIONS 2H(14N, p), E=10 MeV; 14N(n, γ), E=thermal; measured Eγ, Iγ, DSA; deduced 15N, 15O mirror symmetry features. 15N levels deduced T1/2.

doi: 10.1103/PhysRevC.50.682
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1994TO03      Nucl.Instrum.Methods Phys.Res. B84, 105 (1994)

P.Torri, J.Keinonen, K.Nordlund

A Low-Level Detection System for Hydrogen Analysis with the Reaction 1H(15N, αγ)12C

NUCLEAR REACTIONS, ICPND 1H(15N, α), E=6.39 MeV; measured γ-spectra, γ yield; deduced spectrometer efficiency. Low level detection system.

doi: 10.1016/0168-583X(94)95710-X
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1993TI02      Phys.Rev. C47, 145 (1993)

P.Tikkanen, J.Keinonen, A.Kangasmaki, Zs.Fulop, A.Z.Kiss, E.Somorjai

Short Lifetimes in 28Si

NUCLEAR REACTIONS 14N(16O, np), E=20-28 MeV; 27Al(p, γ), E=0.66-1.32 MeV; measured DSA, Eγ, Iγ. 28Si levels deduced T1/2, B(λ), transition matrix elements. Hyperpure Ge detectors, enriched, implanted targets. Monte Carlo analysis, sd-shells, universal shell model.

doi: 10.1103/PhysRevC.47.145
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1992KU17      Nucl.Phys. A549, 59 (1992)

A.Kuronen, J.Keinonen, H.G.Borner, J.Jolie, S.Ulbig

Molecular Dynamics Simulations Applied to the Determination of Nuclear Lifetimes from Dopler-Broadened γ-Ray Line Shapes Produced in Thermal Neutron Capture Reactions

NUCLEAR REACTIONS 35Cl, 48Ti, 53Cr, 56Fe, 60,58Ni(n, γ), E=thermal; analyzed Doppler broadened γ-ray line shapes. 36Cl levels deduced T1/2, M1, E2 transition matrix elements, branching ratio. 49Ti, 54Cr, 57Fe, 61,59Ni levels deduced T1/2. Molecular dynamics simulations.

doi: 10.1016/0375-9474(92)90067-T
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1991TI02      Phys.Rev. C43, 2162 (1991)

P.Tikkanen, J.Keinonen, A.Kangasmaki, Zs.Fulop, A.Z.Kiss, E.Somorjai

Short Lifetimes in Mirror Nuclei 25Mg-25Al

NUCLEAR REACTIONS 12C(15N, np), E=17-27 MeV; 24Mg(p, γ), E=1.2-1.8 MeV; measured DSA. 25Mg, 25Al levels deduced T1/2. Implanted, enriched 12C, 24Mg targets.

doi: 10.1103/PhysRevC.43.2162
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1990KE05      Nucl.Instrum.Methods Phys.Res. B50, 39 (1990)

J.Keinonen, J.Raisanen

Analysis of Cu and O in High-T(c) Superconductors by 7-9 MeV Protons

NUCLEAR REACTIONS Cu, O(p, γ), E=7-9 MeV; measured Eγ, Iγ; deduced relevance to Cu, O analysis in high-T(c) superconductors.

doi: 10.1016/0168-583X(90)90326-P
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1990TI02      Phys.Rev. C42, 581 (1990)

P.Tikkanen, J.Keinonen, K.Arstila, A.Kuronen, B.H.Wildenthal

Lifetimes of the Lowest (5/2)+ and (9/2)+ States in the Mirror Nuclei 23Na-23Mg

NUCLEAR REACTIONS 12C(12C, p), (15N, α), (12C, n), E=15-27 MeV; measured DSA, nγ-coin, Eγ. 23Na, 23Mg levels deduced T1/2. Implanted enriched 12C targets.

doi: 10.1103/PhysRevC.42.581
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1990TI07      Nucl.Phys. A517, 176 (1990)

P.Tikkanen, J.Keinonen, A.Kuronen, A.Z.Kiss, E.Koltay, E.Pintye, B.H.Wildenthal

Short Lifetimes in 29Si-29P for the Test of Shell-Model Wave Functions

NUCLEAR REACTIONS 15N(16O, np), E=17, 20, 22 MeV; 28Si(p, γ), E=1.38, 1.65, 2.08, 2.29 MeV; measured DSA. 29Si, 29P levels deduced T1/2, δ, γ-branching. Implanted, enriched 15N, 28Si targets. Shell model comparison.

doi: 10.1016/0375-9474(90)90267-P
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1990TI08      Phys.Rev. C42, 2431 (1990)

P.Tikkanen, J.Keinonen, A.Lampinen, R.Julin, A.Pakkanen, P.Ahonen, J.Hattula, S.Juutinen, S.Tormanen, P.J.Nolan, P.von Brentano, A.Dewald, A.Gelberg, G.Siems, R.Wirowski

Lifetimes of Yrast J(π) = 16+-26+ States in 130Ce

NUCLEAR REACTIONS 98Mo(36S, 4n), E=143-150 MeV; measured DSA, γ-lineshapes. 130Ce levels deduced T1/2. Enriched targets.

doi: 10.1103/PhysRevC.42.2431
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1989KE04      Nucl.Phys. A493, 124 (1989)

J.Keinonen, P.Tikkanen, A.Kuronen, A.Z.Kiss, E.Somorjai, B.H.Wildenthal

Short Lifetimes in 24Mg for Test of Rotational Collectivity in Shell-Model Wave Functions

NUCLEAR REACTIONS 23Na(p, γ), E=0.7, 1.7 MeV; 12C(14N, pn), E=20, 24 MeV; measured γ-spectra, DSA. 24Mg levels deduced T1/2. Implanted, enriched 23Na, 12C targets.

doi: 10.1016/0375-9474(89)90536-8
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1989SM06      S.Afr.J.Phys. 12, 74 (1989)

J.J.A.Smit, Z.H.J.Pretorius, F.B.Waanders, J.P.L.Reinecke, J.Keinonen

The 40Ar(p, γ)41K Reaction

NUCLEAR REACTIONS, ICPND 40Ar(p, γ), E=0.9-1.6 MeV; measured γ-yield curve, γ(θ); deduced Q. 41K deduced resonances, J, π, B(λ).


1988CS02      Nucl.Phys. A489, 225 (1988)

J.Cseh, M.Jozsa, A.Z.Kiss, E.Koltay, E.Somorjai, J.Keinonen, P.Tikkanen

The Reaction 36S(α, γ)40Ar: γ-transition properties of resonance and bound states in 40Ar

NUCLEAR REACTIONS 36S(α, γ), E=2.35-3.50 MeV; measured γ(θ), γ yield, DSA. 40Ar levels deduced J, π, T1/2. Implanted, enriched 36S targets.

doi: 10.1016/0375-9474(88)90150-9
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1988ET01      Phys.Rev. C38, 1382 (1988)

M.C.Etchegoyen, A.Etchegoyen, B.H.Wildenthal, B.A.Brown, J.Keinonen

Analysis of Magnetic Dipole Transitions between sd-Shell States

NUCLEAR STRUCTURE A=18-38; calculated B(M1); deduced effective magnetic dipole operator. Shell model.

doi: 10.1103/PhysRevC.38.1382
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1988KU33      Nucl.Instrum.Methods Phys.Res. B35, 1 (1988)

A.Kuronen, J.Raisanen, J.Keinonen, P.Tikkanen, E.Rauhala

Electronic Stopping Power for 7Li, 11B, 12C, 14N and 16O at Energies 0.4 to 2.1 MeV/Nucleon in Ta and Au, and for 12C at Energies 0.4, 0.8 and 1.4 MeV/Nucleon in 18 Elemental Solids

doi: 10.1016/0168-583X(88)90090-0
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1987KU02      Phys.Rev. C35, 591 (1987)

A.Kuronen, J.Keinonen, P.Tikkanen

Cross Section of 16O + 16O near the Coulomb Barrier

NUCLEAR REACTIONS, ICPND 16O(16O, X)28Si/30Si/30P/31P/31S/27Al/24Mg, E(cm)=8-13.8 MeV; measured Eγ, Iγ, σ(θ), DSA; deduced residuals production σ(E), astrophysical factors. Tantalum oxide target, Ge(Li) detector.

doi: 10.1103/PhysRevC.35.591
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0212.


1987RA23      Nucl.Instrum.Methods Phys.Res. B28, 199 (1987)

J.Raisanen, T.Witting, J.Keinonen

Absolute Thick-Target γ-Ray Yields for Elemental Analysis by 7 and 9 MeV Protons

NUCLEAR REACTIONS, ICPND 7Li, 9Be, 10,11B, 14N, 16O, 19F, 23Na, 24,26Mg, 27Al, 28,29,30Si, 31P, 32S, 35Cl, 39K, 40Ca, 46,47,48Ti, 52Cr, 55Mn, 54,56Fe, 59Co, 58,60Ni, 63Cu, 64Zn, 70,72Ge, 89Y, 90Zr, 93Nb, 92,95Mo, 96,104Ru, 107,109Ag, 111,114Cd, 113,115In, 116,119,118Sn, 121,123Sb, 127I, 147Sm, 156Gd, 178,179,180Hf, 181Ta, 183W, 194,195Pt, 197Au, 207,208Pb(p, γ), (p, n), E=7-9 MeV; measured absolute thick target γ yield, relative neutron yield. Ge(Li), BF3 detectors.

doi: 10.1016/0168-583X(87)90105-4
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO0901.


1987TI03      Phys.Rev. C36, 32 (1987)

P.Tikkanen, J.Keinonen, R.Lappalainen, B.H.Wildenthal

Short Lifetimes in 30P

NUCLEAR STRUCTURE 30P; calculated levels, B(λ). Shell model.

NUCLEAR REACTIONS 29Si(p, γ), E=1.4-2.1 MeV; measured DSA. 30P deduced levels, T1/2, γ-branching ratio, B(λ). Shell model.

doi: 10.1103/PhysRevC.36.32
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1986JO09      Nucl.Phys. A456, 365 (1986)

M.Jozsa, A.Z.Kiss, E.Koltay, B.Nyako, E.Somorjai, J.Keinonen

The Reaction 36S(α, γ)40Ar: Yield curve, excitation energies and decay of 40Ar resonance levels

NUCLEAR REACTIONS 36S(α, γ), E=2.3-3.55 MeV; measured σ(E(α)), γ-yields, E(γ). 40Ar deduced resonances, strengths, γ-branchings. Enriched targets.

doi: 10.1016/0375-9474(86)90399-4
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1986TI02      Nucl.Phys. A456, 337 (1986)

P.Tikkanen, J.Keinonen, V.Karttunen, A.Kuronen

Transition Strengths in the Mirror Nuclei 27Si-27Al

NUCLEAR REACTIONS 12C(16O, n), (16O, p), E=20 MeV; measured Eγ, Iγ, DSA. 27Si, 27Al levels deduced T1/2. Implanted, enriched 12C targets.

doi: 10.1016/0375-9474(86)90397-0
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1985HA03      Phys.Rev.Lett. 54, 398 (1985)

B.Haas, G.Duchene, F.A.Beck, T.Byrski, C.Gehringer, J.C.Merdinger, A.Nourredine, V.Rauch, J.P.Vivien, J.Barrette, S.Tobbeche, E.Bozek, J.Styczen, J.Keinonen, J.Dudek, W.Nazarewicz

Strong Angular Momentum Effects in Near-Barrier Fusion Reactions

NUCLEAR REACTIONS 144Nd(16O, xn), 123Sb(37Cl, xn), 96Zr(64Ni, xn), 80Se(80Se, xn), E=tandem; measured σ for x=2-5, evaporation residue σ, average γ-multiplicities. 160Er deduced near barrier angular momentum transfer entrance channel dependence. Ground state zero-point vibrations.

doi: 10.1103/PhysRevLett.54.398
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1581.


1985LA16      Nucl.Phys. A441, 1 (1985)

R.Lappalainen, J.Keinonen, A.Luukkainen

Short Lifetimes in 34Cl

NUCLEAR REACTIONS 33S(p, γ), E=1.06-1.98 MeV; measured Eγ, Iγ, DSA. 34Cl levels deduced T1/2. Implanted, enriched 33S targets.

doi: 10.1016/0375-9474(85)90164-2
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1985TI09      Soc.Sci.Fenn., Comment.Phys.-Math. 73, 4 (1985)

P.Tikkanen, J.Keinonen, A.Anttila, A.Pakkanen

Analogue Structure of 27Si-27Al; Transition strengths in 27Si

NUCLEAR REACTIONS 27Al(p, n), E=9-14 MeV; measured nγ-coin, DSA. 27Si levels deduced T1/2, transition strength, γ-multipolarity, δ.


1984KE01      Nucl.Phys. A412, 101 (1984)

J.Keinonen, A.Luukkainen, M.Bister

Isoscalar E2 Strengths in the A = 34 Mass Triplet

NUCLEAR REACTIONS 33S(p, γ), E=0.82, 1.43 MeV; measured σ(E, Eγ, θ), DSA. 34Cl levels deduced γ-ray branching ratios, T1/2. Implanted, enriched 33S targets.

doi: 10.1016/0375-9474(84)90387-7
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1984LA24      Nucl.Phys. A426, 287 (1984)

R.Lappalainen, J.Keinonen, A.Anttila, A.Kiss, E.Somorjai

Short Lifetimes in 38Ar

NUCLEAR REACTIONS 37Cl(p, γ), E=0.94-1.73 MeV; measured DSA. 38Ar levels deduced T1/2. Implanted, enriched 37Cl targets.

doi: 10.1016/0375-9474(84)90109-X
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1984WO10      Nucl.Phys. A431, 170 (1984)

B.Wormann, K.P.Lieb, R.Diller, L.Luhmann, J.Keinonen, L.Cleemann, J.Eberth

The Yrast Bands In 77Kr and 76Kr

NUCLEAR REACTIONS 63Cu(16O, 2np), (16O, pn), E=49-58 MeV; measured Eγ, I(Eγ), γ(θ), recoil distance Droppler shift, DSA, γγ-coin. 77Kr deduced levels, J, π, T1/2, (E2/M1) mixing ratio, B(E2), B(M1). 76Kr deduced T1/2, B(E2). Enriched target. Triaxial rotor plus quasiparticle model.

doi: 10.1016/0375-9474(84)90060-5
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1983HA24      Nucl.Phys. A406, 339 (1983)

O.Hausser, H.R.Andrews, D.Ward, N.Rud, P.Taras, R.Nicole, J.Keinonen, P.Skensved, C.V.Stager

Large Transient Magnetic Fields for Rare-Earth Ions Recoiling in Gadolinium and γ-Factors of High-Spin States in 156,158,160Gd

NUCLEAR REACTIONS 169Tm, Gd(34S, 34S'γ), E=58, 70, 80, 90, 100, 108, 115, 125, 130 MeV; 169Tm, Gd(63Cu, 63Cu'γ), E=230 MeV; measured (34S'γ)-, (63Cu'γ)-coin, Iγ(θ, H); deduced velocity dependence of transient magnetic field in Gd at 80 K. 156,158,160Gd levels deduced g. Ge(Li) detectors, natural targets, transient field IMPAC technique.

doi: 10.1016/0375-9474(83)90466-9
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1983KE05      Nucl.Phys. A403, 45 (1983)

J.Keinonen, B.Nyako, A.Luukkainen, A.Anttila

Short Lifetimes in 26Al

NUCLEAR REACTIONS 25Mg(p, γ), E=0.69-1.72 MeV; measured DSA. 26Al levels deduced T1/2. Implanted, enriched 25Mg targets.

doi: 10.1016/0375-9474(83)90186-0
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1983KE12      Nucl.Instrum.Methods 216, 249 (1983)

J.Keinonen, A.Luukkainen, A.Anttila, M.Erola

Local Density Change of a Metal Backing Due to Implanted Ions: Effect of nuclear lifetimes obtained with the DSA method

NUCLEAR REACTIONS 22Ne(p, γ), E=1.005 MeV; 27Al(p, γ), E=2.49 MeV; measured Eγ, Iγ, DSA; deduced bcc Mo, Ta metal changes in Ne, Al implanted regions. 23Na, 28Si level deduced local density change on T1/2.

doi: 10.1016/0167-5087(83)90357-5
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1982AN10      Nucl.Phys. A383, 509 (1982)

H.R.Andrews, O.Hausser, D.Ward, P.Taras, R.Nicole, J.Keinonen, P.Skensved, B.Haas

Calibration of the Transient Magnetic Field for Rare-Earth Nuclei in Iron: Application to g-factors of high spin states in 152,154Sm

NUCLEAR REACTIONS 152,154Sm, Gd, 156Gd, Dy, 169Tm, 174Yb(63Cu, 63Cu'), E=154, 230 MeV; 152,154Sm, Gd, 156Gd, Dy, 169Tm, 174Yb(79Br, 79Br'), (81Br, 81Br'), E=200, 240 MeV; measured (63Cu)γ-, (79Br)γ-coin, γ(θ, H); deduced transient field calibration, Z, velocity dependence. 152,154Sm levels deduced g. Natural, enriched targets, Ge(Li) detectors, transient field IMPAC technique.

doi: 10.1016/0375-9474(82)90088-4
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1982BA40      Nucl.Phys. A386, 333 (1982)

G.C.Ball, T.K.Alexander, W.G.Davies, J.S.Forster, I.V.Mitchell, J.Keinonen, H.B.Mak

Lifetimes of Low-Lying Levels in 18F

NUCLEAR REACTIONS 3He(16O, p), E=19.4 MeV; measured DSA, pγ-coin. 18F levels deduced T1/2.

doi: 10.1016/0375-9474(82)90116-6
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1982BR05      Z.Phys. A304, 335 (1982)

S.Brussermann, J.Keinonen, H.P.Hellmeister, K.P.Lieb

Recoil Distance Lifetime Measurements in 82Kr

NUCLEAR REACTIONS 76Ge(12C, 2nα), E=42-52 MeV; measured Eγ, Iγ, recoil. 82Kr levels deduced T1/2, configurations. Enriched targets. Two-quasiparticle plus rotor model, interacting boson approximation, cranked shell model.


1982GO11      Nucl.Phys. A385, 57 (1982)

J.Gorres, C.Rolfs, P.Schmalbrock, H.P.Trautvetter, J.Keinonen

Search for Low-Energy Resonances in 21Ne(p, γ)22Na and 22Ne(p, γ)23Na

NUCLEAR REACTIONS, ICPND 21,22Ne(p, γ), E=70-355 keV; measured γ yields, σ(Eγ, E), Eγ, Iγ(E, θ); deduced astrophysical reaction rate. 22Na deduced resonances, Γγ, J, π, resonance strengths. 23Na deduced resonance strength upper limits. Enriched gas targets, Ge(Li) detectors.

doi: 10.1016/0375-9474(82)90489-4
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1982HA03      Phys.Rev.Lett. 48, 383 (1982)

O.Hausser, H.Graf, L.Grodzins, E.Jaeschke, V.Metag, D.Habs, D.Pelte, H.Emling, E.Grosse, R.Kulessa, D.Schwalm, R.S.Simon, J.Keinonen

g Factors of High-Spin Yrast States in 232Th and 238U

NUCLEAR REACTIONS 232Th, 238U(127I, 127I'), E=4.1 MeV/nucleon; 232Th, 238U(142Nd, 142Nd'), E=5.1 MeV/nucleon; measured Eγ, Iγ, multiple Coulomb excitation, recoil in ferromagnetic Gd, γ(127I)-, γ(142Nd)-coin. 232Th, 238U deduced high-spin yrast state g, high-j nucleon aligment.

doi: 10.1103/PhysRevLett.48.383
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1982HA22      Nucl.Phys. A379, 287 (1982)

O.Hausser, H.E.Mahnke, T.K.Alexander, H.R.Andrews, J.F.Sharpey-Schafer, M.L.Swanson, D.Ward, P.Taras, J.Keinonen

Quadrupole Moments of Yrast Isomers in 144, 147, 148Gd

NUCLEAR REACTIONS 120,124Sn(28Si, xn), E=108-144 MeV; measured Iγ(θ, H, t) vs T. 144,147,148Gd levels deduced quadrupole moment, tentative J, deformation. Pulsed beam, Ge(Li) detectors, recoil implantation into Gd.

doi: 10.1016/0375-9474(82)90394-3
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1982KE01      Nucl.Phys. A376, 246 (1982)

J.Keinonen, K.P.Lieb, H.P.Hellmeister, A.Bockisch, H.Emling

Coulomb Excitation and Lifetime Measurements of the 21+ States in 76,82,84Kr

NUCLEAR REACTIONS 63Cu(19F, 2nα), E=58 MeV; measured recoil. 27Al, 64,66Zn, 70,72,74,76Ge(82Kr, 82Kr'), (84Kr, 84Kr'), E=115, 118 MeV; measured Coulomb excitation, σ(E), DSA; deduced stopping power for Kr in Al, Zn, Ge, Ge in Ge, Zn in Zn. 76,82,84Kr level deduced B(E2), T1/2.

doi: 10.1016/0375-9474(82)90063-X
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1982KE08      Nucl.Phys. A385, 461 (1982)

J.Keinonen, A.Anttila, A.Luukkainen

Analogue E2 Transitions in the A = 26 Nuclei

NUCLEAR REACTIONS 25Mg(p, γ), E=1.2 MeV; measured σ(E, Eγ, θ), DSA. 26Al levels deduced γ-ray branching ratios, T1/2, E2 transition strengths. Implanted, enriched 25Mg targets.

doi: 10.1016/0375-9474(82)90097-5
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1981CH04      Can.J.Phys. 59, 238 (1981)

C.-W.Cheng, S.K.Saha, J.Keinonen, H.-B.Mak, W.McLatchie

Hydrogen Burning of 39K in Explosive Oxygen Burning

NUCLEAR REACTIONS 39K(p, γ), E=0.7-2.9 MeV; measured Iγ(θ), branching ratios; deduced astrophysical reaction rates of 39K hydrogen burning. 40Ca resonance deduced relative, absolute γ transition strengths.

doi: 10.1139/p81-030
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1981KE04      Phys.Rev. C23, 2073 (1981)

J.Keinonen, H.-B.Mak, T.K.Alexander, G.C.Ball, W.G.Davies, J.S.Forster, I.V.Mitchell

Lifetime of the 1.04 MeV State in 18F, Measured through the Inverse Reaction 3He(16O, p)18F

NUCLEAR REACTIONS 3He(16O, p), E=15.9 MeV; measured DSA, pγ-coin. 18F level deduced T1/2. He-ion implanted in thin Al, Nb, Zr foils, Ge(Li) detectors.

doi: 10.1103/PhysRevC.23.2073
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1981RU02      Phys.Lett. 100B, 17 (1981)

N.Rud, D.Ward, H.R.Andrews, P.Taras, J.Keinonen

Evidence for Enhanced transition Rates in the Feeding of High Spin States in 147Gd

NUCLEAR REACTIONS 124Sn(28Si, 5n), E=130, 145 MeV; measured γ-multiplicity, σ(Eγ), γ(θ). 147Gd deduced strectched E2 transition to quasiparticle yrast states, average B(E2), average entry spin J.

doi: 10.1016/0370-2693(81)90276-8
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1981RU05      Phys.Lett. 101B, 35 (1981)

N.Rud, D.Ward, H.R.Andrews, O.Hausser, P.Taras, J.Keinonen, M.Neiman, R.M.Diamond, F.S.Stephens

Average g-Factors for High Spin States in 156Dy

NUCLEAR REACTIONS 24Mg(136Xe, 4n), E=544, 570, 650 MeV; measured γ-multiplicities, γγ(θ, H) in Fe. 156Dy deduced average g in high-spin region.

doi: 10.1016/0370-2693(81)90483-4
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1981WA04      Phys.Lett. 99B, 378 (1981)

D.Ward, J.F.Sharpey-Schafer, T.K.Alexander, H.R.Andrews, O.Hausser, J.Keinonen

Remeasurement of Lifetimes for High Spin States in 154Er

NUCLEAR REACTIONS 126Te(32S, 4n), E=130-150, 155 MeV; measured Eγ, Iγ, recoil, σ(Eγ). 154Er deduced levels, γ-branching, T1/2, B(E2), yrast state configuration. Ge(Li), NaI(Tl)detectors.

doi: 10.1016/0370-2693(81)90552-9
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1981WA16      Nucl.Phys. A365, 173 (1981)

D.Ward, H.R.Andrews, A.J.Ferguson, O.Hausser, N.Rud, P.Skensved, J.Keinonen, P.Taras

Average g-Factors for High-Spin States in 78Kr

NUCLEAR REACTIONS 16,18O(65Cu, 2np), (63Cu, 2np), E=190-210 MeV; measured γ(θ, B) in polarized Fe. 78Kr levels deduced g. Enriched targets, transient field perturbed angular correlation technique.

doi: 10.1016/0375-9474(81)90394-8
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1980AN02      Nucl.Phys. A334, 205 (1980)

A.Anttila, S.Brandenburg, J.Keinonen, M.Bister

Lifetimes of Low-Lying States in 19F

NUCLEAR REACTIONS 15N(α, γ), E=1.68, 1.79, 1.84 MeV; measured Eγ, DSA. 19F levels deduced T1/2. Ge(Li) detector. Enriched, implanted targets.

doi: 10.1016/0375-9474(80)90064-0
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1980AN07      Phys.Rev. C21, 1196 (1980)

A.Anttila, J.Keinonen

Analog E2 Transition in the A = 30 Nuclei; Lifetime and Branching Ratio Measurements of Levels in 30P

NUCLEAR REACTIONS 29Si(p, γ), E=0.73, 1.75 MeV; measured σ(E; Eγ, θ), DSA. 30P levels deduced γ-branching ratios, T1/2. Implanted, enriched target. Shell model.

doi: 10.1103/PhysRevC.21.1196
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1980KE03      Nucl.Phys. A341, 345 (1980)

J.Keinonen, S.Brandenburg

Hydrogen Burning of 24,25,26Mg in Explosive Carbon Burning

NUCLEAR REACTIONS 24Mg(p, γ), E=0.82 MeV; 25Mg(p, γ), E=0.3-1.7 MeV; 26Mg(p, γ), E=0.3-2.1 MeV; measured σ(Ep), Ep, Iγ(θ). 25,26,27Al levels deduced γ-ray branching ratios, resonance strengths, Γ, astrophysical reaction rates. Ge(Li) detector. Natural, enriched targets.

doi: 10.1016/0375-9474(80)90317-6
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD5035.


1980KE05      Phys.Rev. C22, 351 (1980)

J.Keinonen, H.-B.Mak, P.Skensved, J.R.Leslie, W.M.McLatchie

Lifetime of the 1.04 MeV State in 18F

NUCLEAR REACTIONS 18O(p, n), E=3.75 MeV; measured DSA. 18F level deduced T1/2. Implanted target.

doi: 10.1103/PhysRevC.22.351
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1979AN16      Phys.Rev. C20, 920 (1979)

A.Anttila, J.Keinonen, R.Hentela

Lifetimes of Negative Parity States in 11C

NUCLEAR REACTIONS 10B(p, γ), E=1.11 MeV; 7Li(α, γ), E=0.96 MeV; measured Eγ, Iγ(θ), DSA. 11C levels deduced T1/2, γ-branching. 11B levels deduced T1/2. Ge(Li) detector, enriched targets.

doi: 10.1103/PhysRevC.20.920
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1979HE07      Phys.Lett. 85B, 34 (1979)

H.P.Hellmeister, U.Kaup, J.Keinonen, K.P.Lieb, R.Rascher, R.Ballini, J.Delaunay, H.Dumont

Band Structure of 78Kr

NUCLEAR REACTIONS 65Cu(16O, 2np), E=42-58 MeV; measured Eγ, Iγ, γ(θ), γγ-coin, DSA. 78Kr deduced levels, J, π, T1/2, γ branching, B(E2). Neutron-proton boson model.

doi: 10.1016/0370-2693(79)90771-8
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1979HE18      Nucl.Phys. A332, 241 (1979)

H.P.Hellmeister, J.Keinonen, K.P.Lieb, U.Kaup, R.Rascher, R.Ballini, J.Delaunay, H.Dumont

Study of High Spin States in 78Kr

NUCLEAR REACTIONS 65Cu(16O, 2np), E=42-58 MeV; 65Cu(19F, 2nα), E=55 MeV; 64Ni(16O, 2n), E=47 MeV; 68Zn(12C, 2n), E=30-36 MeV; 65Cu(16O, 3n), E=54 MeV; measured Eγ, Iγ(θ), DSA, RDM. 78Kr deduced levels, J, π, T1/2. Enriched target.

doi: 10.1016/0375-9474(79)90107-6
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1979KE08      Nucl.Phys. A330, 397 (1979)

J.Keinonen, A.Anttila

Gamma-Transition Strengths of T = 1 States in 10B

NUCLEAR REACTIONS 6Li(α, γ), E=1.02, 1.09, 1.18 MeV; measured Eγ, Iγ(θ), Doppler shift attenuation. 10B levels deduced γ-ray branching ratios, δ(E2/M1), T1/2. Ge(Li) detector, enriched targets.

doi: 10.1016/0375-9474(79)90062-9
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1979RI01      Nucl.Phys. A313, 251 (1979)

M.Riihonen, J.Keinonen, A.Anttila

Hydrogen Burning of 29,30Si in Explosive Carbon Burning

NUCLEAR REACTIONS 28Si(p, γ), E=0.37, 1.38, 1.65, 2.09 MeV; 29,30Si(p, γ), E=0.50, 0.62, 0.78, 0.94, 0.98 MeV; measured σ(E), Iγ(θ). 29,30,31P resonances deduced γ-branchings, resonance strengths. Ge(Li) detector. Natural, enriched targets.

doi: 10.1016/0375-9474(79)90579-7
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD5033.


1978BI11      Nucl.Phys. A306, 189 (1978)

M.Bister, A.Anttila, J.Keinonen

Lifetime of Bound States in 22Na

NUCLEAR REACTIONS 21Ne(p, γ), E=0.50, 0.70, 0.77, 0.81, 0.85, 1.09, 1.13, 1.28, 1.78 MeV; measured Eγ, Iγ, Doppler-shift attenuation. 22Na levels deduced γ-ray branching ratios, T1/2. Ge(Li) detectors, enriched targets.

doi: 10.1016/0375-9474(78)90322-6
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1978HA53      Nucl.Instrum.Methods 150, 599 (1978)

M.Hautala, A.Anttila, J.Keinonen

Relative intensities of gamma-rays from 56Co standard source

RADIOACTIVITY 56Co(EC) [from 56Fe(p, n)]; measured Eγ, Iγ. Comparison with previous results, use as standard discussed.

NUCLEAR REACTIONS 14N(p, γ), E=278 keV; 32S(p, γ), E=588 keV; measured Eγ, Iγ. 15O, 33Cl deduced levels, branching ratios.

doi: 10.1016/0029-554X(78)90137-4
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1978HE12      Phys.Scr. 17, 421 (1978)

R.Hentela, J.Keinonen

Angular Distribution Measurements of Gamma-Rays from Unbound T=1 States in 22Na

NUCLEAR REACTIONS 21Ne(p, γ), E=0.70-1.84 MeV; measured Iγ(E, θ). 22Na levels, analog resonances deduced J, π, δ.


1978HE22      Fizika, Suppl. 10, 13 (1978)

H.P.Hellmeister, J.Keinonen, K.P.Lieb, R.Rascher, R.Ballini, J.Delaunay, H.Dumont

Band Structure of 78Kr

NUCLEAR REACTIONS 65Cu(16O, 2np), E=42, 53, 54, 58 MeV; measured γγ-coin, γ(θ), σ(Eγ), DSA. 78Kr deduced levels, T1/2, J, π, band structure.


1978KE01      Phys.Rev. C17, 414 (1978)

J.Keinonen, A.Anttila, R.Hentela

13C(p, γ)14N Study of the 9.13-MeV State in 14N

NUCLEAR REACTIONS 13C(p, γ), E=1.70 MeV; measured σ(Eγ, θ). 14N deduced levels, J, π, γ-branching, δ.

doi: 10.1103/PhysRevC.17.414
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1978KE03      Nucl.Phys. A294, 1 (1978)

J.Keinonen, A.Anttila, M.Bister

Lifetimes of the Unbound 41-, 51+ and 32+ States in 14N

NUCLEAR REACTIONS 13C(p, γ), E=1.01, 1.52, 1.70 MeV; measured Eγ, Iγ, Doppler-shift attenuation. 14N levels deduced γ-ray branching ratios, T1/2. Ge(Li) detector, enriched targets.

doi: 10.1016/0375-9474(78)90390-1
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1977AN17      J.Phys.(London) G3, 1241 (1977)

A.Anttila, J.Keinonen, M.Bister

The DSA Lifetime of the 2425 keV State in 21Na

NUCLEAR REACTIONS 20Ne(p, γ), E ≈ 1.7 MeV; measured DSA. 21Na level deduced T1/2. Enriched targets, Ge(Li) detector.

doi: 10.1088/0305-4616/3/9/014
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1977AN29      Nucl.Instrum.Methods 147, 501 (1977)

A.Anttila, J.Keinonen, M.Hautala, I.Forsblom

Use of the 27Al(p, γ)28Si, E = 992 keV Resonance as a Gamma-Ray Intensity Standard

NUCLEAR REACTIONS 27Al(p, γ), E=760, 992, 1800 keV; measured σ(Eγ). 28Si deduced resonances, γ-branching.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0387.


1977BI07      Phys.Rev. C16, 1303 (1977)

M.Bister, A.Anttila, J.Keinonen

Doppler-Shift Attenuation Lifetimes in 14N Derived from Experimental Stopping Parameters

NUCLEAR REACTIONS 13C(p, γ), E=1.15 MeV; measured Eγ, DSA. 14N levels deduced T1/2, γ-branching, Γγ.

doi: 10.1103/PhysRevC.16.1303
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1977KE04      Phys.Rev. C15, 579 (1977)

J.Keinonen, M.Riihonen, A.Anttila

Absolute Resonance Strengths in the 20,21,22Ne(p, γ)21,22,23Na and 21Ne(p, p1γ)21Ne Reactions

NUCLEAR REACTIONS 21Ne(p, γ), (p, p'γ), E=0.5-2.0 MeV; measured σ(E, Eγ, θ). 20Ne(p, γ), E=1.2 MeV; 22Ne(p, γ), E=1.3 MeV; measured σ(Eγ). 21,22,23Na deduced resonances, strengths, Γ. Enriched targets.

doi: 10.1103/PhysRevC.15.579
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD5032.


1977KE13      Z.Phys. A282, 227 (1977)

J.Keinonen, K.P.Lieb, H.P.Hellmeister, F.J.Bergmeister

Lifetimes of High-Spin Levels in 39Ar

NUCLEAR REACTIONS 25Mg(16O, 2pγ), 26Mg(18O, nαγ), E ≈ 45, 55 MeV; measured recoil distance DSA. 39Ar levels deduced T1/2, B(λ).

doi: 10.1007/BF01408167
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1977KE15      Nucl.Phys. A286, 505 (1977)

J.Keinonen, M.Bister, A.Antilla

Lifetimes of Bound States in 15O

NUCLEAR REACTIONS 14N(p, γ), E=1.74, 2.35 MeV; measured Eγ, Doppler-shift attenuation. 15O levels deduced T1/2. Ge(Li) detector, enriched targets.

doi: 10.1016/0375-9474(77)90599-1
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1977RI14      Nucl.Instrum.Methods 144, 323 (1977)

M.Riihonen, J.Keinonen

Measurements of Absolute Resonance Strengths in (p, γ) Reactions on Rare or Gaseous Nuclei

NUCLEAR REACTIONS 20,21,22Ne, 54,56,57,58Fe(n, γ); measured yields. 55,57,58,59Co deduced resonance strength.

doi: 10.1016/0029-554X(77)90124-0
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1976KE02      Phys.Rev. C14, 160 (1976)

J.Keinonen, R.Rascher, M.Uhrmacher, N.Wust, K.P.Lieb

M2 Transitions between the 1f7/2 and the 1d3/2 Orbit

NUCLEAR REACTIONS 25Mg, 27Al(16O, X), E=30-50 MeV; measured Eγ, recoil distance DSA. 36Cl levels deduced γ-branching. 35,36Cl, 40K, 41Ca levels deduced T1/2. M2 transition systematics 33 ≤ A ≤ 47.

doi: 10.1103/PhysRevC.14.160
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1976KE08      Soc.Sci.Fenn., Comment.Phys.-Math. 46, 61 (1976)

J.Keinonen, A.Anttila

The Standard Resonance Strength in the 27Al(p, γ)28Si Reaction

NUCLEAR REACTIONS, ICPND 27Al(p, γ), E=633, 992 keV; measured thick target γ yield. 28Si levels deduced resonance strength.


1976RI11      J.Inorg.Nucl.Chem. 38, 1927 (1976)

R.Rieppo, J.K.Keinonen, M.Valkonen

Activation Cross-Sections for 14.7 MeV Neutrons on Natural Germanium

NUCLEAR REACTIONS 70Ge(n, 2n), 72,73,74Ge(n, p), E=14.7 MeV; measured activation σ. Natural target.

doi: 10.1016/0022-1902(76)80439-3
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset20770.


1975AN09      Nucl.Instr.Methods 124, 605 (1975)

A.Anttila, J.Keinonen, M.Bister

DSA Measurements with Two-Target Arrangement

NUCLEAR REACTIONS 27Al(p, γ), E=1364 keV; measured DSA. 28Si levels deduced T1/2.


1975AN14      Z.Phys. A274, 227 (1975)

A.Anttila, M.Bister, J.Keinonen

DSA Lifetimes in 21Na and 23Na Derived from Experimental Stopping Parameters

NUCLEAR REACTIONS 20,22Ne(p, γ), E < 2 MeV; measured DSA; deduced stopping parameters. 21,23Na levels deduced T1/2, transition strengths.

doi: 10.1007/BF01437734
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1975BI16      Phys.Lett. 53A, 471 (1975)

M.Bister, A.Anttila, J.Keinonen

A Method for Determination of Nuclear and Electronic Stopping Power Parameters

NUCLEAR REACTIONS 27Al(p, γ), E=2.49 MeV; measured γ-spectra, Doppler broadening; deduced nuclear, electronic stopping power. 28Si level deduced T1/2.

doi: 10.1016/0375-9601(75)90672-6
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1975KE01      J.Phys.(London) G1, 53 (1975)

J.Keinonen, M.Bister, A.Anttila

On the Configuration of the 10.22 MeV Analogue Level in 37Cl

NUCLEAR REACTIONS 36S(p, p), E approx 1.89 MeV; measured σ(E, θ). 37Cl resonance deduced J, π, T, p-width, γ-width.

doi: 10.1088/0305-4616/1/1/007
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1975KE11      Phys.Scr. 12, 280 (1975)

J.Keinonen, M.Riihonen, A.Anttila

Strengths of Analogue Resonances in (p, γ) Reactions on Sulphur Isotopes

NUCLEAR REACTIONS 32S(p, γ), E=588 keV; 34S(p, γ), E=1214 keV; 33S(p, γ), E=1542 keV; 36S(p, γ), E=1887 keV; measured σ(E, Eγ). 33,34,35,37Cl resonances deduced strengths, Γ.

doi: 10.1088/0031-8949/12/5/005
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1974BI16      Phys.Fenn. 9, 23 (1974)

M.Bister, A.Anttila, J.Keinonen, B.Fant

Isobaric Analog Resonances in 35Cl

NUCLEAR REACTIONS 34S(p, p), (p, γ), E=1.21, 1.51, 1.90, 2.07 MeV; measured σ(E, θ), σ(E, Eγ, θ). 35Cl deduced analog resonances, p-width, J, π.


1974HO10      J.Inorg.Nucl.Chem. 36, 715 (1974)

P.Holmberg, R.Rieppo, J.K.Keinonen, M.Valkonen

Activation Cross-Sections for 14.7 MeV Neutrons on Chromium

NUCLEAR REACTIONS 50Cr(n, 2n), 52,53,54Cr(n, p), 54Cr(n, α), E=14.7 MeV; measured yields, deduced σ.

doi: 10.1016/0022-1902(74)80798-0
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset20526.


1974KE10      Z.Phys. 268, 313 (1974)

J.Keinonen

Widths of the 7.74 MeV Analogue State in 39K

NUCLEAR REACTIONS 38Ar(p, p), (p, γ), E=1390, 1397 keV; measured σ(E, θ), Eγ, Iγ. 39K deduced levels, J, π, level-width, p-width, γ branching ratios.

doi: 10.1007/BF01669467
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1974KE14      Z.Phys. 270, 129 (1974)

J.Keinonen, A.Anttila, M.Bister

On the Gamma Decay of Analogue Resonances in the 58Fe(p, γ)59Co Reaction

NUCLEAR REACTIONS 58Fe(p, γ), E=2.20-2.25 MeV; measured Eγ, Iγ, DSA; deduced Q, ft. 59Co deduced levels, resonances, T1/2, γ-branching ratios.

doi: 10.1007/BF01677444
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1973FA07      Z.Phys. 260, 185 (1973)

B.Fant, J.Keinonen, A.Anttila, M.Bister

Investigation of Gamma Ray Transitions and Lifetimes in 35Cl

NUCLEAR REACTIONS 34S(p, γ), E=1-2 MeV; measured Eγ, Iγ, DSA. Deduced Q. 35Cl deduced levels, T1/2, resonances, γ-branching.

doi: 10.1007/BF01395979
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