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NSR database version of May 30, 2024.

Search: Author = A.Nieminen

Found 60 matches.

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2013JO02      Phys.Rev. C 87, 044318 (2013)

D.Jordan, A.Algora, J.L.Tain, B.Rubio, J.Agramunt, A.B.Perez-Cerdan, F.Molina, L.Caballero, E.Nacher, A.Krasznahorkay, M.D.Hunyadi, J.Gulyas, A.Vitez, M.Csatlos, L.Csige, J.Aysto, H.Penttila, I.D.Moore, T.Eronen, A.Jokinen, A.Nieminen, J.Hakala, P.Karvonen, A.Kankainen, A.Saastamoinen, J.Rissanen, T.Kessler, C.Weber, J.Ronkainen, S.Rahaman, V.Elomaa, U.Hager, S.Rinta-Antila, T.Sonoda, K.Burkard, W.Huller, L.Batist, W.Gelletly, A.L.Nichols, T.Yoshida, A.A.Sonzogni, K.Perajarvi, A.Petrovici, K.W.Schmid, A.Faessler

Total absorption study of the β decay of 102, 104, 105Tc

RADIOACTIVITY 102,104,105Tc(β-)[from U(p, F), E=30, 50 MeV followed by mass separation]; measured Eγ, Iγ using the Total Absorption Gamma Spectrometer (TAGS) and JYFLTRAP Penning trap at IGISOL, Jyvaskyla facility; deduced β feedings to levels in 102,104,105Ru, β-strength distributions, Gamow-Teller strengths, average β and γ energies, effects on decay heat calculations. Comparison of deduced β feedings with those from high-resolution γ-ray measurements. Comparison of Gamow-Teller strengths with VAMPIR model calculations. Relevance to decay heat calculations in nuclear reactors.

NUCLEAR REACTIONS U(p, F)102Mo/102Tc/102Ru/104Tc/105Nb/ 105Mo/105Tc/105Ru, E=30, 50 MeV; measured yields using JYFLRTRAP Penning trap at IGISOL, Jyvaskyla facility.

doi: 10.1103/PhysRevC.87.044318
Citations: PlumX Metrics

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2012FL05      J.Phys.(London) G39, 125101 (2012)

K.T.Flanagan, J.Billowes, P.Campbell, B.Cheal, G.D.Dracoulis, D.H.Forest, M.D.Gardner, J.Huikari, A.Jokinen, B.A.Marsh, R.Moore, A.Nieminen, H.Penttila, H.L.Thayer, G.Tungate, J.Aysto

Nuclear moments, charge radii and spins of the ground and isomeric states in 175Yb and 177Yb

NUCLEAR MOMENTS 175,177Yb; measured hyperfine structures; deduced static moments and changes in mean-square charge radii. Collinear laser spectroscopy at the IGISOL facility, comparison with Nilsson model.

doi: 10.1088/0954-3899/39/12/125101
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2011AL21      J.Korean Phys.Soc. 59, 1479s (2011)

A.Algora, D.Jordan, J.L.Tain, B.Rubio, J.Agramunt, L.Caballero, E.Nacher, A.B.Perez-Cerdan, F.Molina, A.Krasznahorkay, M.D.Hunyadi, J.Gulyas, A.Vitez, M.Csatlos, L.Csige, J.Aysto, H.Penttila, S.Rinta-Antila, I.Moore, T.Eronen, A.Jokinen, A.Nieminen, J.Hakala, P.Karvonen, A.Kankainen, U.Hager, T.Sonoda, A.Saastamoinen, J.Rissanen, T.Kessler, C.Weber, J.Ronkainen, S.Rahaman, V.Elomaa, K.Burkard, W.Huller, L.Batist, W.Gelletly, T.Yoshida, A.L.Nichols, A.Sonzogni, K.Perajarvi

Improvements on Decay Heat Summation Calculations by Means of Total Absorption Gamma-ray Spectroscopy Measurements

RADIOACTIVITY 101Nb, 101,105Mo, 102,104,105,106,107Tc(β-)[from U(p, F), E=30-50 MeV]; measured decay products using TAGS (Total Absorption Gamma Spectrometer) with Penning trap at IGISOL (JYFLTRAP); deduced decay heat.

doi: 10.3938/jkps.59.1479
Citations: PlumX Metrics


2011AV01      J.Phys.(London) G38, 025104 (2011)

M.Avgoulea, Yu.P.Gangrsky, K.P.Marinova, S.G.Zemlyanoi, S.Fritzsche, D.Iablonskyi, C.Barbieri, E.C.Simpson, P.D.Stevenson, J.Billowes, P.Campbell, B.Cheal, B.Tordoff, M.L.Bissell, D.H.Forest, M.D.Gardner, G.Tungate, J.Huikari, A.Nieminen, H.Penttila, J.Aysto

Nuclear charge radii and electromagnetic moments of radioactive scandium isotopes and isomers

NUCLEAR MOMENTS 42,43,44,45,46Sc; measured hyperfine structure; deduced nuclear magnetic dipole moments and electric quadrupole moments, isotope shifts, charge radii, deformation. Shell model calculation, laser spectroscopy.

NUCLEAR STRUCTURE 42,43,44,45,46Sc, 40,41,42,43,44,45,46,47,48Ca; calculated nuclear isomer shifts, radii, magnetic moment, spectroscopic quadrupole moments. Comparison with other data.

doi: 10.1088/0954-3899/38/2/025104
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2010AL22      Phys.Rev.Lett. 105, 202501 (2010)

A.Algora, D.Jordan, J.L.Tain, B.Rubio, J.Agramunt, A.B.Perez-Cerdan, F.Molina, L.Caballero, E.Nacher, A.Krasznahorkay, M.D.Hunyadi, J.Gulyas, A.Vitez, M.Csatlos, L.Csige, J.Aysto, H.Penttila, I.D.Moore, T.Eronen, A.Jokinen, A.Nieminen, J.Hakala, P.Karvonen, A.Kankainen, A.Saastamoinen, J.Rissanen, T.Kessler, C.Weber, J.Ronkainen, S.Rahaman, V.Elomaa, S.Rinta-Antila, U.Hager, T.Sonoda, K.Burkard, W.Huller, L.Batist, W.Gelletly, A.L.Nichols, T.Yoshida, A.A.Sonzogni, K.Perajarvi

Reactor Decay Heat in 239Pu: Solving the γ Discrepancy in the 4-3000-s Cooling Period

RADIOACTIVITY 101Nb, 105Mo, 102,104,105,106,107Tc(β-) [from U(p, X), E=30, 50 MeV]; measured Eγ, Iγ, mass; deduced β-feeding probabilities, discrepancies for decay heat of 239Pu.

doi: 10.1103/PhysRevLett.105.202501
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2010HY01      Phys.Rev. C 81, 024303 (2010)

S.Hyldegaard, M.Alcorta, B.Bastin, M.J.G.Borge, R.Boutami, S.Brandenburg, J.Buscher, P.Dendooven, C.Aa.Diget, P.Van Duppen, T.Eronen, S.P.Fox, L.M.Fraile, B.R.Fulton, H.O.U.Fynbo, J.Huikari, M.Huyse, H.B.Jeppesen, A.S.Jokinen, B.Jonson, K.Jungmann, A.Kankainen, O.S.Kirsebom, M.Madurga, I.Moore, A.Nieminen, T.Nilsson, G.Nyman, G.J.G.Onderwater, H.Penttila, K.Perajarvi, R.Raabe, K.Riisager, S.Rinta-Antila, A.Rogachevskiy, A.Saastamoinen, M.Sohani, O.Tengblad, E.Traykov, Y.Wang, K.Wilhelmsen, H.W.Wilschut, J.Aysto

R-matrix analysis of the β decays of 12N and 12B

RADIOACTIVITY 12N(β+), 12B(β-); measured 3α summed spectra and associated branching ratios for breakup via the 8Be ground-state and via excited states of 8Be. 12C; deduced levels, resonances, Gammow-Teller strengths and widths using multilevel, many-channel R-matrix formalism.

doi: 10.1103/PhysRevC.81.024303
Citations: PlumX Metrics

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2009DI06      Phys.Rev. C 80, 034316 (2009)

C.Aa.Diget, F.C.Barker, M.J.G.Borge, R.Boutami, P.Dendooven, T.Eronen, S.P.Fox, B.R.Fulton, H.O.U.Fynbo, J.Huikari, S.Hyldegaard, H.B.Jeppesen, A.Jokinen, B.Jonson, A.Kankainen, I.Moore, A.Nieminen, G.Nyman, H.Penttila, V.F.E.Pucknell, K.Riisager, S.Rinta-Antila, O.Tengblad, Y.Wang, K.Wilhelmsen, J.Aysto

Breakup channels for 12C triple-α continuum states

RADIOACTIVITY 12N(β+)[from 12C(p, n), E=28 MeV], 12B(β-)[from 11B(d, p), E=10 MeV]; measured Eα, Eγ, ααα-coin. 12C; deduced levels, J, π, triple-α continuum states and their decay modes. R-matrix analysis.

doi: 10.1103/PhysRevC.80.034316
Citations: PlumX Metrics


2007AL58      Eur.Phys.J. Special Topics 150, 383 (2007)

A.Algora, J.L.Tain, A.B.Perez, B.Rubio, J.Agramunt, L.Caballero, E.Nacher, A.Krasznahorkay, M.D.Hunyadi, J.Gulyas, A.Vitez, J.Aysto, H.Penttila, S.Rinta-Antila, I.Moore, T.Eronen, A.Jokinen, A.Nieminen, J.Hakala, P.Karvonen, A.Kankainen, U.Hager, T.Sonoda, K.Burkard, W.Huller, L.Batist, W.Gelletly, T.Yoshida, A.L.Nichols, A.Sonzogni

Exploring the reactor heat problem: Study of the beta decay of 104, 105Tc using the TAS technique

doi: 10.1140/epjst/e2007-00353-x
Citations: PlumX Metrics


2007BI14      Phys.Lett. B 645, 330 (2007)

M.L.Bissell, K.T.Flanagan, M.D.Gardner, M.Avgoulea, J.Billowes, P.Campbell, B.Cheal, T.Eronen, D.H.Forest, J.Huikari, A.Jokinen, I.D.Moore, A.Nieminen, H.Penttila, S.Rinta-Antila, B.Tordoff, G.Tungate, J.Aysto

On the decrease in charge radii of multi-quasi particle isomers

NUCLEAR MOMENTS 97mY, 176,176mYb, 178,178mHf; measured isomer shifts, μ, quadrupole moments, radii; deduced hyperfine structure coefficients. Laser spectroscopy.

doi: 10.1016/j.physletb.2006.12.054
Citations: PlumX Metrics


2007CH07      Phys.Lett. B 645, 133 (2007)

B.Cheal, M.D.Gardner, M.Avgoulea, J.Billowes, M.L.Bissell, P.Campbell, T.Eronen, K.T.Flanagan, D.H.Forest, J.Huikari, A.Jokinen, B.A.Marsh, I.D.Moore, A.Nieminen, H.Penttila, S.Rinta-Antila, B.Tordoff, G.Tungate, J.Aysto

The shape transition in the neutron-rich yttrium isotopes and isomers

NUCLEAR MOMENTS 86,87,87m,88,88m,89,89m,90,90m,92,93,93m,94,95,96,96m,97,97m,98,98m,99,100,101,102Y; measured isotope and isomer shifts, μ, quadrupole moments, radii, deformation. Laser spectroscopy.

doi: 10.1016/j.physletb.2006.12.053
Citations: PlumX Metrics


2006AV09      Hyperfine Interactions 171, 217 (2006)

M.Avgoulea, M.Mahgoub, J.Billowes, P.Campbell, A.Ezwam, D.H.Forest, M.Gardner, J.Huikari, A.Jokinen, A.Nieminen, G.Tungate, J.Aysto

Laser spectroscopy of stable Os isotopes

NUCLEAR MOMENTS 184,186,187,188,189,190,192Os; measured hfs, isotope shifts. Laser spectroscopy.

doi: 10.1007/s10751-006-9485-0
Citations: PlumX Metrics


2006HA03      Phys.Rev.Lett. 96, 042504 (2006); Erratum Phys.Rev.Lett. 96, 069901 (2006)

U.Hager, T.Eronen, J.Hakala, A.Jokinen, V.S.Kolhinen, S.Kopecky, I.Moore, A.Nieminen, M.Oinonen, S.Rinta-Antila, J.Szerypo, J.Aysto

First Precision Mass Measurements of Refractory Fission Fragments

ATOMIC MASSES 95,96,97,98,99,100Sr, 98,99,100,101,102,103,104,105Zr, 102,103,104,105,106,107,108,109,110Mo; measured masses. Penning trap spectrometer.

doi: 10.1103/PhysRevLett.96.042504
Citations: PlumX Metrics


2006KA11      Eur.Phys.J. A 27, 67 (2006)

A.Kankainen, T.Eronen, S.P.Fox, H.O.U.Fynbo, U.Hager, J.Hakala, J.Huikari, D.G.Jenkins, A.Jokinen, S.Kopecky, I.Moore, A.Nieminen, H.Penttila, S.Rinta-Antila, O.Tengblad, Y.Wang, J.Aysto

Excited states in 31S studied via beta decay of 31Cl

RADIOACTIVITY 31Cl(β+p) [from 32S(p, 2n), E=40-45 MeV]; measured β-delayed Eγ, Iγ, Ep, Ip; deduced log ft, branching. 31S deduced level energies. Mass separated source, comparison with shell model.

doi: 10.1140/epja/i2005-10236-6
Citations: PlumX Metrics

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2006WA10      Chin.Phys.Lett. 23, 808 (2006)

Y.-B.Wang, P.Dendooven, J.Huikari, A.Jokinen, V.S.Kolhinen, G.Lhersonneau, A.Nieminen, S.Nummela, H.Penttila, K.Perajarvi, S.Rinta-Antila, J.Szerypo, J.C.Wang, J.Aysto

New Levels in 118Pd Observed in the β Decay of Very Neutron-Rich 118Rh Isotope

RADIOACTIVITY 118Rh(β-) [from U(p, F)]; measured Eγ, Iγ, βγ-coin. 118Pd deduced levels, J, π. Level systematics in neighboring isotopes discussed.

doi: 10.1088/0256-307X/23/4/013
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2005JO22      Eur.Phys.J. A 25, Supplement 1, 27 (2005)

A.Jokinen, T.Eronen, U.Hager, J.Hakala, S.Kopecky, A.Nieminen, S.Rinta-Antila, J.Aysto

Ion manipulation and precision measurements at JYFLTRAP

ATOMIC MASSES 98,99,100,101,102,103,104,105Zr; measured masses. Penning trap mass spectrometer.

NUCLEAR STRUCTURE Z=40; analyzed two-neutron separation energies.

doi: 10.1140/epjad/i2005-06-180-3
Citations: PlumX Metrics


2005KA39      Eur.Phys.J. A 25, 355 (2005)

A.Kankainen, G.K.Vorobjev, S.A.Eliseev, W.Huang, J.Huikari, A.Jokinen, A.Nieminen, Yu.N.Novikov, H.Penttila, A.V.Popov, S.Rinta-Antila, H.Schatz, D.M.Seliverstov, Yu.P.Suslov, J.Aysto

Isomers of astrophysical interest in neutron-deficient nuclei at masses A = 81, 85 and 86

RADIOACTIVITY 81mKr(EC), (IT); 81Y, 81Sr, 85Nb, 85Zr, 86Mo, 86Nb(EC) [from Ni, 54Fe(32S, X)]; measured Eγ, Iγ, E(ce), I(ce), T1/2. 81Kr, 85Zr, 85Nb deduced isomeric transitions T1/2, ICC. 85Zr, 86Nb deduced levels, J, π, ICC. 81Br deduced neutrino capture rate. Astrophysical implications discussed.

NUCLEAR REACTIONS 54Fe(32S, X)81Zr/81Y/81Sr/81mKr, E=150-170 MeV; Ni(32S, X)85Nb/85mNb/85Zr/85mZr/86Mo/86Nb, E=150-170 MeV; measured yields.

doi: 10.1140/epja/i2005-10141-0
Citations: PlumX Metrics


2005KA46      Eur.Phys.J. A 25, Supplement 1, 129 (2005)

A.Kankainen, S.A.Eliseev, T.Eronen, S.P.Fox, U.Hager, J.Hakala, W.Huang, J.Huikari, D.Jenkins, A.Jokinen, S.Kopecky, I.Moore, A.Nieminen, Yu.N.Novikov, H.Penttila, A.V.Popov, S.Rinta-Antila, H.Schatz, D.M.Seliverstov, G.K.Vorobjev, Y.Wang, J.Aysto, and the IS403 Collaboration

Beta-delayed gamma and proton spectroscopy near the Z = N line

RADIOACTIVITY 31Cl(β+p) [from S(p, X), E=40 MeV]; measured β-delayed Eγ, Ep. 58Zn(β+) [from Nb(p, X), E=1.4 GeV]; measured Eγ, Iγ, βγ-coin, T1/2. 58Cu deduced levels, β-feeding intensities. 81mKr(EC), (IT); 81Y, 81Sr, 85Nb, 85Zr, 86Mo, 86Nb(EC) [from Ni, 54Fe(32S, X)]; measured Eγ, Iγ, E(ce), I(ce), T1/2. 81Kr, 85Zr, 85Nb deduced isomeric transitions T1/2, ICC. 85Zr, 86Nb deduced levels, J, π, ICC. 81Br deduced neutrino capture rate. Mass-separated sources.

doi: 10.1140/epjad/i2005-06-036-x
Citations: PlumX Metrics


2005KN02      Phys.Rev. C 72, 044312 (2005)

H.H.Knudsen, H.O.U.Fynbo, M.J.G.Borge, R.Boutami, P.Dendooven, C.Aa.Diget, T.Eronen, S.Fox, L.M.Fraile, B.Fulton, J.Huikary, H.B.Jeppesen, A.S.Jokinen, B.Jonson, A.Kankainen, I.Moore, A.Nieminen, G.Nyman, H.Penttila, K.Riisager, S.Rinta-Antila, O.Tengblad, Y.Wang, K.Wilhelmsen, J.Aysto

β-decay of 13O

RADIOACTIVITY 13O(β+p) [from 14N(p, 2n)]; measured β-delayed Ep, Ip; deduced log ft. 13N deduced branching ratios for proton decay from excited states.

doi: 10.1103/PhysRevC.72.044312
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2005MO35      J.Phys.(London) G31, S1499 (2005)

I.D.Moore, A.Nieminen, J.Billowes, P.Campbell, Ch.Geppert, A.Jokinen, T.Kessler, B.Marsh, H.Penttila, S.Rinta-Antila, B.Tordoff, K.D.A.Wendt, J.Aysto

Development of a laser ion source at IGISOL

doi: 10.1088/0954-3899/31/10/020
Citations: PlumX Metrics


2005PE22      Eur.Phys.J. A 25, Supplement 1, 745 (2005)

H.Penttila, J.Billowes, P.Campbell, P.Dendooven, V.-V.Elomaa, T.Eronen, U.Hager, J.Hakala, J.Huikari, A.Jokinen, A.Kankainen, P.Karvonen, S.Kopecky, B.Marsh, I.Moore, A.Nieminen, A.Popov, S.Rinta-Antila, Y.Wang, J.Aysto

Performance of IGISOL 3

doi: 10.1140/epjad/i2005-06-141-x
Citations: PlumX Metrics


2005RI19      Eur.Phys.J. A 25, Supplement 1, 119 (2005)

S.Rinta-Antila, Y.Wang, P.Dendooven, J.Huikari, A.Jokinen, A.Kankainen, V.S.Kolhinen, G.Lhersonneau, A.Nieminen, S.Nummela, H.Penttila, K.Perajarvi, J.Szerypo, J.C.Wang, J.Aysto, and the ISOLDE Collaboration

Structure of doubly-even cadmium nuclei studied by β- decay

RADIOACTIVITY 116,118,120Ag(β-); measured Eγ, Iγ, βγ-coin. 116,118,120Cd deduced levels, J, π. Three-phonon states discussed.

doi: 10.1140/epjad/i2005-06-064-6
Citations: PlumX Metrics


2004GA34      J.Phys.(London) G30, 1089 (2004)

Yu.P.Gangrsky, K.P.Marinova, S.G.Zemlyanoi, I.D.Moore, J.Billowes, P.Campbell, K.T.Flanagan, D.H.Forest, J.A.R.Griffith, J.Huikari, R.Moore, A.Nieminen, H.Thayer, G.Tungate, J.Aysto

Nuclear charge radii of neutron deficient titanium isotopes 44Ti and 45Ti

NUCLEAR MOMENTS 44,45,46,47,48,49,50Ti; measured hfs, isotope shifts; deduced charge radii. Collinear laser spectroscopy.

doi: 10.1088/0954-3899/30/9/009
Citations: PlumX Metrics


2004KO42      Nucl.Instrum.Methods Phys.Res. A528, 776 (2004)

V.S.Kolhinen, S.Kopecky, T.Eronen, U.Hager, J.Hakala, J.Huikari, A.Jokinen, A.Nieminen, S.Rinta-Antila, J.Szerypo, J.Aysto

JYFLTRAP: a cylindrical Penning trap for isobaric beam purification at IGISOL

ATOMIC MASSES 110,111,112,113,114,115,116Rh, 100,102,104,106Mo; measured masses. Penning trap.

doi: 10.1016/j.nima.2004.05.029
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2004RI12      Phys.Rev. C 70, 011301 (2004)

S.Rinta-Antila, S.Kopecky, V.S.Kolhinen, J.Hakala, J.Huikari, A.Jokinen, A.Nieminen, J.Aysto, J.Szerypo

Direct mass measurements of neutron-rich zirconium isotopes up to 104Zr

ATOMIC MASSES 96,97,98,99,100,101,102,103,104Zr; measured masses; deduced two-neutron separation energies. Shape-change and shape coexistence effects discussed. Penning trap.

NUCLEAR STRUCTURE 96,97,98,99,100,101,102,103,104Zr; measured masses; deduced two-neutron separation energies. Shape-change and shape coexistence effects discussed. Penning trap.

doi: 10.1103/PhysRevC.70.011301
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2004WA03      Eur.Phys.J. A 19, 83 (2004)

J.C.Wang, P.Dendooven, S.Hankonen, J.Huikari, A.Jokinen, V.S.Kolhinen, G.Lhersonneau, A.Nieminen, K.Perajarvi, S.Rinta-Antila, J.Aysto

Reinvestigation of the beta-decay of 110Mo

RADIOACTIVITY 110Mo(β-) [from 238U(p, F)]; measured Eγ, Iγ, γγ-, βγ-coin, T1/2; deduced log ft, B(GT). 110Tc deduced levels, J, π. Comparison with model predictions.

doi: 10.1140/epja/i2003-10105-4
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2003CH60      J.Phys.(London) G29, 2479 (2003)

B.Cheal, M.Avgoulea, J.Billowes, P.Campbell, K.T.Flanagan, D.H.Forest, M.D.Gardner, J.Huikari, B.A.Marsh, A.Nieminen, H.L.Thayer, G.Tungate, J.Aysto

Collinear laser spectroscopy of neutron-rich cerium isotopes near the N = 88 shape transition

NUCLEAR MOMENTS 144,146,148Ce; measured isotope shifts; deduced relative charge radii. Collinear laser spectroscopy.

doi: 10.1088/0954-3899/29/11/003
Citations: PlumX Metrics


2003KU25      Eur.Phys.J. A 18, 5 (2003)

J.Kurpeta, A.Plochocki, A.N.Andreyev, J.Aysto, A.De Smet, H.De Witte, A.-H.Evensen, V.Fedoseyev, S.Franchoo, M.Gorska, M.Huhta, M.Huyse, Z.Janas, A.Jokinen, M.Karny, E.Kugler, W.Kurcewicz, U.Koster, J.Lettry, A.Nieminen, K.Partes, M.Ramdhane, H.L.Ravn, K.Rykaczewski, J.Szerypo, K.Van de Vel, P.Van Duppen, L.Weissman, G.Walter, A.Wohr, and the IS387 and ISOLDE Collaborations

The decay of the new neutron-rich isotope 217Bi

RADIOACTIVITY 217Bi(β-) [from 232Th, 238U(p, X)]; measured Eγ, Iγ, βγ-coin, T1/2, Qβ; deduced log ft. 217Po deduced levels. 217Po(α) [from 217Bi decay]; measured Eα, T1/2. Mass separator.

doi: 10.1140/epja/i2003-10065-7
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2003KU26      Eur.Phys.J. A 18, 31 (2003)

J.Kurpeta, A.Plochocki, A.N.Andreyev, J.Aysto, A.De Smet, H.De Witte, A.-H.Evensen, V.Fedoseyev, S.Franchoo, M.Gorska, H.Grawe, M.Huhta, M.Huyse, Z.Janas, A.Jokinen, M.Karny, E.Kugler, W.Kurcewicz, U.Koster, J.Lettry, A.Nieminen, K.Partes, M.Ramdhane, H.L.Ravn, K.Rykaczewski, J.Szerypo, K.Van de Vel, P.Van Duppen, L.Weissman, G.Walter, A.Wohr, and the IS387 and ISOLDE Collaborations

Isomeric and ground-state decay of 215Bi

RADIOACTIVITY 215mBi(IT), (β-); 215Bi(β-) [from 232Th, 238U(p, X)]; measured Eγ, Iγ, X-ray spectra, γγ-, βγ-, (X-ray)γ-coin; deduced log ft. 215Bi deduced levels, J, π, configurations, ICC, high-spin isomer T1/2. 215Po deduced levels, J, π, configurations. Mass separator.

doi: 10.1140/epja/i2003-10066-6
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2003TH03      J.Phys.(London) G29, 2247 (2003)

H.L.Thayer, J.Billowes, P.Campbell, P.Dendooven, K.T.Flanagan, D.H.Forest, J.A.R.Griffith, J.Huikari, A.Jokinen, R.Moore, A.Nieminen, G.Tungate, S.Zemlyanoi, J.Aysto

Collinear laser spectroscopy of radioisotopes of zirconium

NUCLEAR MOMENTS 87,87m,88,89,89m,91,92,94,96,97,98,99,100,101,102Zr; measured hfs, isotope shifts; deduced μ, quadrupole moments, radii. Collinear laser spectroscopy.

doi: 10.1088/0954-3899/29/9/318
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2003WA13      Phys.Rev. C 67, 064303 (2003)

Y.Wang, S.Rinta-Antila, P.Dendooven, J.Huikari, A.Jokinen, V.S.Kolhinen, G.Lhersonneau, A.Nieminen, S.Nummela, H.Penttila, K.Perajarvi, J.Szerypo, J.C.Wang, J.Aysto

β decay of neutron-rich 118Ag and 120Ag isotopes

RADIOACTIVITY 118,118m,120,120mAg(β-) [from U(p, F)]; measured Eγ, Iγ, γγ-, βγ-coin, T1/2; deduced log ft. 118,120Cd deduced levels, J, π, configurations, three-phonon states. Mass separator, comparisons with neighboring nuclides.

doi: 10.1103/PhysRevC.67.064303
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2002CA37      Phys.Rev.Lett. 89, 082501 (2002)

P.Campbell, H.L.Thayer, J.Billowes, P.Dendooven, K.T.Flanagan, D.H.Forest, J.A.R.Griffith, J.Huikari, A.Jokinen, R.Moore, A.Nieminen, G.Tungate, S.Zemlyanoi, J.Aysto

Laser Spectroscopy of Cooled Zirconium Fission Fragments

NUCLEAR MOMENTS 97,99,101Zr; measured hfs, μ, quadrupole moments. 96,97,98,99,100,101,102Zr; measured isotope shifts, radii. On-line laser spectroscopy.

doi: 10.1103/PhysRevLett.89.082501
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2002CA47      Eur.Phys.J. A 15, 45 (2002)

P.Campbell, A.Nieminen, J.Billowes, P.Dendooven, K.T.Flanagan, D.H.Forest, Yu.P.Gangrsky, J.A.R.Griffith, J.Huikari, A.Jokinen, I.D.Moore, R.Moore, H.L.Thayer, G.Tungate, S.G.Zemlyanoi, J.Aysto

First results from laser spectroscopy on bunched radioactive beams from the JYFL ion-beam cooler

NUCLEAR MOMENTS 44,45,46,48,49,50Ti, 87,88,89Zr, 170,171,172,173,174,175,176,177,178,179,180Hf; measured hfs, charge radii. Ion-beam cooler, laser spectroscopy.

doi: 10.1140/epja/i2001-10223-y
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2002FO12      J.Phys.(London) G28, L63 (2002)

D.H.Forest, J.Billowes, P.Campbell, P.Dendooven, K.T.Flanagan, J.A.R.Griffith, J.Huikari, A.Jokinen, R.Moore, A.Nieminen, H.L.Thayer, G.Tungate, S.Zemlyanoi, J.Aysto

Laser spectroscopy of neutron deficient zirconium isotopes

NUCLEAR MOMENTS 87,87m,88,89,89mZr; measured hfs; deduced radii, μ, quadrupole moments, ground-state J. Collinear laser spectroscopy, cooled and bunched ion beams.

doi: 10.1088/0954-3899/28/12/101
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2002JO09      EPJdirect 4, A3, 1-11 (2002); Erratum Eur.Phys.J. 28, s02, 1 (2006)

A.Jokinen, A.Nieminen, J.Aysto, R.Borcea, E.Caurier, P.Dendooven, M.Gierlik, M.Gorska, H.Grawe, M.Hellstrom, M.Karny, Z.Janas, R.Kirchner, M.La Commara, G.Martinez-Pinedo, P.Mayet, H.Penttila, A.Plochocki, M.Rejmund, E.Roeckl, M.Sawicka, C.Schlegel, K.Schmidt, R.Schwengner

Beta Decay of 57Zn

RADIOACTIVITY 57Zn(EC) [from 28Si(32S, 3n)]; measured β-delayed proton spectra. 57Zn deduced mass excess. 57Cu deduced levels, J, π, Gamow-Teller strength distribution. Mass separator. Comparison with shell-model predictions.

doi: 10.1007/s1010502a0003
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2002JO12      Nucl.Phys. A701, 557c (2002)

A.Jokinen, J.Huikari, A.Nieminen, J.Aysto

The First Cooled Beams from JYFL Ion Cooler and Trap Project

doi: 10.1016/S0375-9474(01)01643-8
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2002MO31      Phys.Lett. 547B, 200 (2002)

R.Moore, A.M.Bruce, P.Dendooven, J.Billowes, P.Campbell, A.Ezwam, K.T.Flanagan, D.H.Forest, J.Huikari, A.Jokinen, A.Nieminen, H.L.Thayer, G.Tungate, S.Zemlyanoi, J.Aysto

Character of an 8- isomer of 130Ba

RADIOACTIVITY 130mBa(IT) [from 133Cs(d, 5n)]; measured Eγ, Iγ, T1/2.

NUCLEAR MOMENTS 130mBa; measured μ, static quadrupole moment, isomer shift. 130Ba levels deduced configurations, deformation. Collinear laser spectroscopy.

doi: 10.1016/S0370-2693(02)02784-3
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2002NI12      Phys.Rev.Lett. 88, 094801 (2002)

A.Nieminen, P.Campbell, J.Billowes, D.H.Forest, J.A.R.Griffith, J.Huikari, A.Jokinen, I.D.Moore, R.Moore, G.Tungate, J.Aysto

On-Line Cooling and Bunching for Collinear Laser Spectroscopy

NUCLEAR MOMENTS 175Hf; measured hfs; deduced μ, quadrupole moment, charge radius. Collinear laser spectroscopy.

doi: 10.1103/PhysRevLett.88.094801
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2002OI02      Nucl.Phys. A701, 613c (2002)

M.Oinonen, J.Aysto, U.Koster, J.Huikari, A.Jokinen, A.Nieminen, K.Perajarvi, P.Baumann, F.Didierjean, A.Huck, A.Knipper, M.Ramdhane, G.Walter, M.Huyse, P.Van Duppen, G.Marguier, Yu.Novikov, A.Popov, D.M.Seliverstov, H.Schatz, and the ISOLDE Collaboration

Beta-Decay Half-Lives of 70Kr and 74Rb

RADIOACTIVITY 70Kr, 74Rb(EC) [from Nb(p, X)]; measured T1/2. Astrophysical implications discussed. Mass separator.

NUCLEAR REACTIONS Nb(p, X)70Kr/74Rb, E=1 GeV; measured yields. Mass separator.

doi: 10.1016/S0375-9474(01)01654-2
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2002SZ02      Acta Phys.Pol. B33, 487 (2002)

J.Szerypo, A.Jokinen, V.S.Kolhinen, A.Nieminen, S.Rinta-Antila, J.Aysto

Ion Trap Project at IGISOL and r-Process Studies


2002SZ05      Nucl.Phys. A701, 588c (2002)

J.Szerypo, A.Jokinen, V.S.Kolhinen, A.Nieminen, S.Rinta-Antila, J.Aysto

Penning Trap at IGISOL

doi: 10.1016/S0375-9474(01)01650-5
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2001BE75      Hyperfine Interactions 132, 485 (2001)

R.Beraud, G.Canchel, A.Emsallem, P.Dendooven, J.Huikari, W.Huang, Y.Wang, K.Perajarvi, S.Rinta-Antila, A.Jokinen, V.S.Kolhinen, A.Nieminen, H.Penttila, J.Szerypo, J.Aysto, B.Bruyneel, A.Popov

Status of HIGISOL, a New Version Equipped with SPIG and Electric Field Guidance


2001BO54      Nucl.Phys. A695, 69 (2001); Erratum Nucl.Phys. A703, 889 (2002)

R.Borcea, J.Aysto, E.Caurier, P.Dendooven, J.Doring, M.Gierlik, M.Gorska, H.Grawe, M.Hellstrom, Z.Janas, A.Jokinen, M.Karny, R.Kirchner, M.La Commara, K.Langanke, G.Martinez-Pinedo, P.Mayet, A.Nieminen, F.Nowacki, H.Penttila, A.Plochocki, M.Rejmund, E.Roeckl, C.Schlegel, K.Schmidt, R.Schwengner, M.Sawicka

Beta Decay of 56Cu

RADIOACTIVITY 56Cu(β+) [from 28Si(32S, p3n)]; measured Eγ, Iγ, T1/2; deduced β intensity and β-strength distribution. 56Ni deduced levels, J, π. On-line mass separation, plastic scintillation dedectors, Ge detectors.

NUCLEAR STRUCTURE 56Ni; calculated levels, Gamow-Teller strength. Shell model.

doi: 10.1016/S0375-9474(01)01096-X
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2001NO07      Eur.Phys.J. A 11, 257 (2001)

Yu.N.Novikov, H.Schatz, P.Dendooven, R.Beraud, Ch.Miehe, A.V.Popov, D.M.Seliverstov, G.K.Vorobjev, P.Baumann, M.J.G.Borge, G.Canchel, Ph.Dessagne, A.Emsallem, W.Huang, J.Huikari, A.Jokinen, A.Knipper, V.Kolhinen, A.Nieminen, M.Oinonen, H.Penttila, K.Perajarvi, I.Piqueras, S.Rinta-Antila, J.Szerypo, Y.Wang, J.Aysto

Isomeric State of 80Y and Its Role in the Astrophysical rp-Process

RADIOACTIVITY 80Zr(β+) [from 54Fe(32S, X), E=150 MeV]; measured Eγ, Eβ, βγ-coin. 80Y deduced levels J, π, T1/2, γ multipolarity, ICC. Implications for nucleosynthesis in rapid-proton capture process discussed, comparison with earlier data.

doi: 10.1007/s100500170062
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2001OI02      Eur.Phys.J. A 10, 123 (2001)

M.Oinonen, U.Koster, J.Aysto, V.Fedoseyev, V.Mishin, J.Huikari, A.Jokinen, A.Nieminen, K.Perajarvi, A.Knipper, G.Walter, and the ISOLDE Collaboration

Ground-State Spin of 59Mn

RADIOACTIVITY 59Mn(β-) [from Nb(p, X)]; measured Eβ, Eγ, Iγ, T1/2; deduced β-branching, log ft. 59Mn deduced ground-state J, π. 59Fe deduced levels, J, π. Resonance ionization laser ion source, mass separator.

doi: 10.1007/s100500170122
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2001OI04      Phys.Lett. 511B, 145 (2001)

M.Oinonen, J.Aysto, P.Baumann, J.Cederkall, S.Courtin, P.Dessagne, S.Franchoo, H.Fynbo, M.Gorska, J.Huikari, A.Jokinen, A.Knipper, U.Koster, G.Le Scornet, C.Miehe, A.Nieminen, T.Nilsson, Yu.Novikov, K.Perajarvi, E.Poirier, A.Popov, D.M.Seliverstov, T.Siiskonen, H.Simon, O.Tengblad, P.Van Duppen, G.Walter, L.Weissman, K.Wilhelmsen-Rolander, and the ISOLDE Collaboration

Non-Analog β Decay of 74Rb

RADIOACTIVITY 74Rb(EC) [from Nb(p, X)]; measured Eγ, Iγ, E(ce), I(ce), T1/2; deduced Coulomb mixing parameter. Mass separator.

doi: 10.1016/S0370-2693(01)00646-3
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2001PE23      Nucl.Phys. A696, 233 (2001)

K.Perajarvi, P.Dendooven, M.Gorska, J.Huikari, A.Jokinen, V.S.Kolhinen, M.La Commara, G.Lhersonneau, A.Nieminen, S.Nummela, H.Penttila, E.Roeckl, J.C.Wang, J.Aysto

The 1+ → 0+ Gamow-Teller Strength of the 58Cug.s58Nig.s. Transition

RADIOACTIVITY 58Cu(EC) [from 58Ni(p, n)]; measured Iγ following positron annihilation; deduced ground-state Iβ and B(GT). 58Ni transitions deduced intensities. On-line mass separation.

doi: 10.1016/S0375-9474(01)01137-X
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2001SZ03      Acta Phys.Pol. B32, 985 (2001)

J.Szerypo, A.Jokinen, V.S.Kolhinen, A.Nieminen, S.Rinta-Antila, J.Aysto

Status of the Ion Trap Project at IGISOL


2001WA04      Phys.Rev. C63, 024309 (2001)

Y.Wang, P.Dendooven, J.Huikari, A.Jokinen, V.S.Kolhinen, G.Lhersonneau, A.Nieminen, S.Nummela, H.Penttila, K.Perajarvi, S.Rinta-Antila, J.Szerypo, J.C.Wang, J.Aysto

Beta Decay of Neutron-Rich 116Rh and the Low-Lying Level Structure of Even-Even 116Pd

RADIOACTIVITY 116Rh(β-) [from U(p, F)]; measured Eγ, Iγ, γγ-, βγ-coin. 116Pd deduced levels, J, π. Mass separator. Level systematics in neighboring nuclides discussed.

doi: 10.1103/PhysRevC.63.024309
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2001WA42      Phys.Rev. C64, 054315 (2001)

Y.Wang, P.Dendooven, J.Huikari, A.Jokinen, V.S.Kolhinen, G.Lhersonneau, A.Nieminen, S.Nummela, H.Penttila, K.Perajarvi, S.Rinta-Antila, J.Szerypo, J.C.Wang, J.Aysto

β Decay of 116mAg and the Vibrational Structure of 116Cd

RADIOACTIVITY 116mAg(β-) [from U(p, F)]; measured Eγ, Iγ, γγ-, βγ-coin; deduced logft. 116Cd deduced levels, J, π, configurations. Mass-separated source.

doi: 10.1103/PhysRevC.64.054315
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2000CA54      Hyperfine Interactions 127, 83 (2000)

P.Campbell, J.Billowes, E.C.A.Cochrane, P.Dendooven, D.E.Evans, J.A.R.Griffith, J.Huikari, A.Jokinen, I.D.Moore, A.Nieminen, K.Perajarvi, G.Tungate, G.Yeandle, J.Aysto

Progress of laser spectroscopy at the IGISOL

doi: 10.1023/A:1012654509080
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2000JO18      Eur.Phys.J. A 9, 9 (2000)

A.Jokinen, J.C.Wang, J.Aysto, P.Dendooven, S.Nummela, J.Huikari, V.Kolhinen, A.Nieminen, K.Perajarvi, S.Rinta-Antila

Beta Decay of Neutron-Rich 118Rh and the Lowest Excited States in 118Pd

RADIOACTIVITY 118Rh(β-) [from 238U(p, F)]; measured Eβ, Iβ, Eγ, Iγ, βγ-coin, T1/2. 118Pd deduced levels, J, π, configurations. Level systematics in Pd isotopes discussed.

doi: 10.1007/s100500070049
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2000KU06      Eur.Phys.J. A 7, 49 (2000)

J.Kurpeta, A.Andreyev, J.Aysto, A.-H.Evensen, M.Huhta, M.Huyse, A.Jokinen, M.Karny, E.Kugler, J.Lettry, A.Nieminen, A.Plochocki, M.Ramdhane, H.L.Ravn, K.Rykaczewski, J.Szerypo, P.Van Duppen, G.Walter, A.Wohr, and the ISOLDE Collaboration

The Decay of the Neutron-Rich Nucleus 216Bi

RADIOACTIVITY 216Bi(β-) [from 232Th(p, X), E=1 GeV]; measured Eγ, Iγ(t), γγ-, βγ-coin. 216Po deduced levels, possible J, π. Mass separator, tape transport.

doi: 10.1007/s100500050010
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2000LH02      Eur.Phys.J. A 9, 385 (2000)

G.Lhersonneau, P.Dendooven, G.Canchel, J.Huikari, P.Jardin, A.Jokinen, V.Kolhinen, C.Lau, L.Lebreton, A.C.Mueller, A.Nieminen, S.Nummela, H.Penttila, K.Perajarvi, Z.Radivojevic, V.Rubchenya, M.-G.Saint-Laurent, W.H.Trzaska, D.Vakhtin, J.Vervier, A.C.C.Villari, J.C.Wang, J.Aysto

Production of Neutron-Rich Isotopes in Fission of Uranium Induced by Neutrons of 20 MeV Average Energy

NUCLEAR REACTIONS 238U(n, F)88Se/88Br/89Br/90Br/88Kr/89Kr/90Kr/91Kr/92Kr/93Kr/89Rb/90Rb/91Rb/92Rb/93Rb/112Tc/112Ru/112Rh/118Ag/136Te/137Te/136I/137I/138I/139I/140I/137Xe/139Xe/140Xe/141Xe/138Cs/139Cs/140Cs/141Cs/142Cs/139Ba/141Ba/142Ba/144Ba/142La/144La, E=20 MeV; 238U(p, F)88Se/88Br/89Br/90Br/91Br/88Kr/89Kr/90Kr/91Kr/93Kr/89Rb/90Rb/91Rb/93Rb/94Rb/94Sr/112Tc/112Ru/112Rh/118Ag/136Te/137Te/136I/137I/138I/139I/140I/137Xe/139Xe/140Xe/141Xe/138Cs/139Cs/140Cs/141Cs/142Cs/139Ba/141Ba/142Ba/143Ba/144Ba/142La/143La/144La, E=25 MeV; measured Eγ, yields. 238U(n, F), E=10-25 MeV; 238U(p, F), E=25 MeV; calculated σ, mass and charge distributions. 12C(d, xn), E=50 MeV; measured thick-target En, σ(θ, En), neutron to deuteron conversion factor. Radioactive beam applications discussed.

doi: 10.1007/s100500070023
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2000OI04      Hyperfine Interactions 127, 431 (2000)

M.Oinonen, Y.Jading, U.Koster, J.Lettry, H.Ravn, J.Aysto, P.Dendooven, J.Huikari, A.Jokinen, P.O.Lipas, A.Nieminen, K.Perajarvi, T.Siiskonen, P.Baumann, A.Huck, A.Knipper, M.Ramdhane, G.Walter, F.Didierjean, V.N.Fedoseyev, V.I.Mishin, M.Koizumi, W.Liu, E.Roeckl, V.Sebastian, and the ISOLDE Collaboration

Laser ionization in β-decay studies of Zn and Mn nuclei

RADIOACTIVITY 58Zn(EC) [from Nb(p, X)]; measured Eγ, Iγ; deduced log ft. 58Cu levels deduced configurations. Resonance ionization laser ion source.

NUCLEAR REACTIONS Nb, U(p, X), E=1 GeV; measured yields of Mn and Zn isotopes. Resonance ionization laser ion source.

doi: 10.1023/A:1012617717682
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2000WA07      Phys.Rev. C61, 044308 (2000)

J.C.Wang, G.Canchel, P.Dendooven, J.H.Hamilton, S.Hankonen, J.Huikari, J.K.Hwang, A.Jokinen, V.S.Kolhinen, G.Lhersonneau, A.Nieminen, V.E.Oberacker, K.Perajarvi, A.V.Ramayya, J.Aysto

Low-Spin Structure of 110Ru Studied by β Decay of 110Tc

RADIOACTIVITY 110Tc(β-) [from 238U(p, F)]; measured Eγ, Iγ, γγ-, βγ-coin; deduced β-branching, logft. 110Ru deduced levels, J, π, B(E2). Level systematics in Ru isotopes discussed. Comparisons with model predictions.

doi: 10.1103/PhysRevC.61.044308
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2000WA14      Acta Phys.Pol. B31, 449 (2000)

J.C.Wang, G.Canchel, P.Dendooven, S.Hankonen, J.Huikari, A.Jokinen, V.S.Kolhinen, G.Lhersonneau, A.Nieminen, K.Perajarvi, J.Aysto

Quasi-particle States in Even-Even Pd and Low-Lying Low-Spin Excited States in Even-Even Ru

RADIOACTIVITY 110Tc, 110Rh(β-) [from 238U(p, F)]; measured Eγ, Iγ, βγ-, γγ-coin. 110Pd, 110Ru deduced levels, J, π, configurations. Systematics in neighboring Pd, Ru isotopes discussed. Mass-separated sources.


2000YE02      J.Phys.(London) G26, 839 (2000); Corrigendum J.Phys.(London) G26, 1299 (2000)

G.Yeandle, J.Billowes, P.Campbell, E.C.A.Cochrane, P.Dendooven, D.E.Evans, D.H.Forest, J.A.R.Griffith, J.Huikari, A.Jokinen, I.D.Moore, A.Nieminen, K.Perajarvi, G.Tungate, J.Aysto

Nuclear Moments and Charge Radii of the 171Hf Ground State and Isomer

NUCLEAR MOMENTS 171Hf; measured isotope shift, μ, electric quadrupole moment, charge radii for ground state and isomer. On-line laser spectroscopy.

doi: 10.1088/0954-3899/26/6/307
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1999CA21      Eur.Phys.J. A 5, 1 (1999)

G.Canchel, R.Beraud, E.Chabanat, A.Emsallem, N.Redon, P.Dendooven, J.Huikari, A.Jokinen, V.Kolhinen, G.Lhersonneau, M.Oinonen, A.Nieminen, H.Penttila, K.Perajarvi, J.C.Wang, J.Aysto

A New Isomer in 125La

RADIOACTIVITY 125Ce(β+), (EC) [from 94Mo(36Ar, 3n2p)]; measured Eγ, Iγ, E(ce), I(ce), (ce)γ(t). 125La deduced isomeric level T1/2, multipolarity. Mass-separated source.

doi: 10.1007/s100500050248
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1998JO20      Nuovo Cim. 111A, 1083 (1998)

A.Jokinen, J.Aysto, P.Dendooven, S.Hankonen, A.Honkanen, J.Huikari, G.Lhersonneau, P.O.Lipas, H.Penttila, K.Perajarvi, M.Oinonen, A.Nieminen, T.Siiskonen, J.C.Wang

High-Resolution Studies of Beta-Delayed Proton Emitters at IGISOL Facility

RADIOACTIVITY 23Al(β+) [from 24Mg(p, 2n)]; measured Eγ, Iγ, β-delayed proton spectra. 23Mg deduced IAS resonance strength. 41Ti(β+) [from 40Ca(3He, 2n)]; measured β-delayed proton spectra. 41Sc deduced Gamow-Teller strength distribution. Mass-separated sources.

doi: 10.1007/BF03035996
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1998OI02      Nucl.Instrum.Methods Phys.Res. A416, 485 (1998)

M.Oinonen, R.Beraud, G.Canchel, E.Chabanat, P.Dendooven, A.Emsallem, S.Hankonen, A.Honkanen, J.Huikari, A.Jokinen, G.Lhersonneau, Ch.Miehe, A.Nieminen, Yu.Novikov, H.Penttila, K.Perajarvi, A.Popov, D.M.Seliverstov, J.C.Wang, J.Aysto

Production of Refractory Elements Close to the Z = N Line using the Ion-Guide Technique

NUCLEAR REACTIONS Ni(32S, X)80Rb/81Sr/80Y/81Y/82Y/84Y/82Zr/83Zr/85Zr/84Nb/85Nb/86Nb/87Nb/88Nb/86Mo/87Mo, E=165 MeV; measured production rates, β-gated γ-spectra. Ion-Guide Isotope Separator On-Line.

RADIOACTIVITY 82Y(β+) [from Ni(32S, X), E=165 MeV]; measured T1/2, log ft. 82Sr levels deduced β-feeding intensities.

doi: 10.1016/S0168-9002(98)00613-5
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