NSR Query Results


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NSR database version of May 21, 2024.

Search: Author = T.Kokalova

Found 72 matches.

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2024LI06      Phys.Rev. C 109, 015806 (2024)

K.C.W.Li, R.Neveling, P.Adsley, H.Fujita, P.Papka, F.D.Smit, J.W.Brummer, L.M.Donaldson, M.N.Harakeh, Tz.Kokalova, E.Nikolskii, W.Paulsen, L.Pellegri, S.Siem, M.Wiedeking

Understanding the total width of the 3-1 state in 12C

doi: 10.1103/PhysRevC.109.015806
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Data from this article have been entered in the XUNDL database. For more information, click here.


2023LO09      Phys.Lett. B 845, 138149 (2023)

J.Lois-Fuentes, B.Fernandez-Dominguez, X.Pereira-Lopez, F.Delaunay, W.N.Catford, A.Matta, N.A.Orr, T.Duguet, T.Otsuka, V.Soma, O.Sorlin, T.Suzuki, N.L.Achouri, M.Assie, S.Bailey, B.Bastin, Y.Blumenfeld, R.Borcea, M.Caamano, L.Caceres, E.Clement, A.Corsi, N.Curtis, Q.Deshayes, F.Farget, M.Fisichella, G.de France, S.Franchoo, M.Freer, J.Gibelin, A.Gillibert, G.F.Grinyer, F.Hammache, O.Kamalou, A.Knapton, Tz.Kokalova, V.Lapoux, B.Le Crom, S.Leblond, F.M.Marques, P.Morfouace, J.Pancin, L.Perrot, J.Piot, E.Pollacco, D.Ramos, D.Regueira-Castro, C.Rodriguez-Tajes, T.Roger, F.Rotaru, M.Senoville, N.de Sereville, R.Smith, M.Stanoiu, I.Stefan, C.Stodel, D.Suzuki, J.C.Thomas, N.Timofeyuk, M.Vandebrouck, J.Walshe, C.Wheldon

Cross-shell states in 15C: A test for p-sd interactions

NUCLEAR REACTIONS 2H(16C, t), E=17.2 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ(θ), level energies, J, π, experimental level scheme, single-particle strength, normalised spectroscopic factors. Comparison with the ab initio self-consistent Green's function method employing the NNLOsat interaction. TIARA Silicon array, three MUST2 telescopes, GANIL.

doi: 10.1016/j.physletb.2023.138149
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2022BA39      Phys.Rev. C 106, 054310 (2022)

M.Barbui, A.Volya, E.Aboud, S.Ahn, J.Bishop, V.Z.Goldberg, J.Hooker, C.H.Hunt, H.Jayatissa, Tz.Kokalova, E.Koshchiy, S.Pirrie, E.Pollacco, B.T.Roeder, A.Saastamoinen, S.Upadhyayula, C.Wheldon, G.V.Rogachev

α-cluster structure of 18Ne

NUCLEAR REACTIONS 4He(14O, α), E=61.8 MeV; measured reaction product, Eα, Iα, angular distribution; deduced σ(θ), excitation function of 18Ne. 18Ne; deduced resonances J, π, resonance total and partial widths. 18Ne, O; calculated levels J, π. Analysis with a multichannel R-matrix approach. Shell model with FSU interaction Hamiltonian calculations. Comparison with other experimental data. TexAT active target at magnetic achromat recoil separator (Cyclotron Institute at Texas AM University).

doi: 10.1103/PhysRevC.106.054310
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2021BA19      Eur.Phys.J. A 57, 108 (2021)

S.Bailey, T.Kokalova, M.Freer, C.Wheldon, R.Smith, J.Walshe, N.Soic, L.Prepolec, V.Tokic, F.M.Marques, L.Achouri, F.Delaunay, M.Parlog, Q.Deshayes, B.Fernandez-Dominguez, B.Jacquot

The identification of α-clustered doorway states in 44, 48, 52Ti using machine learning

NUCLEAR REACTIONS 4He(40Ca, α), (44Ca, α), (48Ca, α), E not given; analyzed available σ(θ) data; deduced Random Forest Classifier (RFC) toclassify spectra as either clustered or not clustered.

doi: 10.1140/epja/s10050-021-00357-3
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2021PI06      Eur.Phys.J. A 57, 150 (2021)

S.Pirrie, C.Wheldon, Tz.Kokalova, J.Bishop, Th.Faestermann, R.Hertenberger, H.F.Wirth, S.Bailey, N.Curtis, D.Dell'Aquila, D.Mengoni, R.Smith, D.Torresi, A.Turner

Precision branching-ratio measurements in 18O

NUCLEAR REACTIONS 12C(7Li, p), E=44 MeV; measured reaction products; deduced energy levels, J, π, branching ratios, resonance parameters. Comparison with available data, Monte-Carlo techniques, Q3D magnetic spectrograph.

doi: 10.1140/epja/s10050-021-00431-w
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2020GR08      J.Phys.(London) G47, 085104 (2020)

M.R.Griffiths, C.Wheldon, Tz.Kokalova, A.Turner, S.Pirrie, V.Ziman, N.I.Ashwood, J.D.Malcolm, M.Barr, M.Freer, Th.Faestermann, H-F.Wirth, R.Hertenberger, R.Gernhauser, R.Krucken

Mass measurement of Re-190

NUCLEAR REACTIONS 192Os, 194Pt(d, α)190Re/192Ir, E=18 MeV; measured Eα, Iα using Q3D magnetic spectrograph at MLL-Munich tandem Van de Graaff accelerator facility. 190Re, 192Ir; deduced levels, J, π.

ATOMIC MASSES 190Re; deduced mass excess, atomic mass and binding energy. Comparison with values in AME2016.

doi: 10.1088/1361-6471/ab98e3
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2020PE15      Phys.Lett. B 811, 135939 (2020)

X.Pereira-Lopez, B.Fernandez-Dominguez, F.Delaunay, N.L.Achouri, N.A.Orr, W.N.Catford, M.Assie, S.Bailey, B.Bastin, Y.Blumenfeld, R.Borcea, M.Caamano, L.Caceres, E.Clement, A.Corsi, N.Curtis, Q.Deshayes, F.Farget, M.Fisichella, G.de France, S.Franchoo, M.Freer, J.Gibelin, A.Gillibert, G.F.Grinyer, F.Hammache, O.Kamalou, A.Knapton, T.Kokalova, V.Lapoux, J.A.Lay, B.Le Crom, S.Leblond, J.Lois-Fuentes, F.M.Marques, A.Matta, P.Morfouace, A.M.Moro, T.Otsuka, J.Pancin, L.Perrot, J.Piot, E.Pollacco, D.Ramos, C.Rodriguez-Tajes, T.Roger, F.Rotaru, M.Senoville, N.de Sereville, R.Smith, O.Sorlin, M.Stanoiu, I.Stefan, C.Stodel, D.Suzuki, T.Suzuki, J.C.Thomas, N.Timofeyuk, M.Vandebrouck, J.Walshe, C.Wheldon

Low-lying single-particle structure of 17C and the N=14 sub-shell closure

NUCLEAR REACTIONS 2H(16C, p)17C, E=17.2 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ(θ), γ-ray energies, J, π, level scheme, spectroscopic factors. Comparison with shell model and particle-core model calculations.

doi: 10.1016/j.physletb.2020.135939
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD8032. Data from this article have been entered in the XUNDL database. For more information, click here.


2020PI14      Phys.Rev. C 102, 064315 (2020)

S.Pirrie, C.Wheldon, Tz.Kokalova, J.Bishop, Th.Faestermann, R.Hertenberger, H.-F.Wirth, S.Bailey, N.Curtis, D.Dell'Aquila, D.Mengoni, R.Smith, D.Torresi, A.Turner

Search for evidence of rotational cluster bands in 18O

NUCLEAR REACTIONS 12C(7Li, p)18O*, E=44.0 MeV; measured reaction products, recoil protons, (18O break-up particle)α-coin using the Q3D magnetic spectrograph, and the Birmingham large-angular-coverage DSSD array at the Maier-Leibnitz Laboratory (MLL) in Garching. 18O; deduced levels, J, π, total widths, Γα/Γ branching ratios, barrier penetration, θα2, bands, no evidence of consistent (14C+α or 12C+2n+α) cluster structure for any of the bands. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.102.064315
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2019BA45      Phys.Rev. C 100, 051302 (2019)

S.Bailey, T.Kokalova, M.Freer, C.Wheldon, R.Smith, J.Walshe, N.Curtis, N.Soic, L.Prepolec, V.Tokic, F.M.Marques, L.Achouri, F.Delaunay, Q.Deshayes, M.Parlog, B.Fernandez-Dominguez, B.Jacquot, A.Soylu

Extracting the spectral signature of α clustering in 44, 48, 52Ti using a continuous wavelet transform

NUCLEAR REACTIONS 4He(40Ca, α)44Ti*, E=180 MeV; 4He(44Ca, α)48Ti*, E=207 MeV; 4He(48Ca, α)52Ti*, E=234 MeV; measured scattered α particles, Eα, Iα, differential σ using double-sided silicon strip detectors at the GANIL radioactive beam facility; deduced continuous wavelet transform (CWT) of the measured spectra, and compared with simulated spectra using the simplified R matrix for spinless particles. 44Ti; deduced high-lying α-clustered levels J, π and compared with previous measurements. Present technique combined thick target inverse kinematics (TTIK) approach and the resonant scattering measurements with the continuous wavelet transform (CWT).

doi: 10.1103/PhysRevC.100.051302
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2019BI05      Phys.Rev. C 100, 034320 (2019)

J.Bishop, Tz.Kokalova, M.Freer, L.Acosta, M.Assie, S.Bailey, G.Cardella, N.Curtis, E.De Filippo, D.Dell'Aquila, S.De Luca, L.Francalanza, B.Gnoffo, G.Lanzalone, I.Lombardo, N.S.Martorana, S.Norella, A.Pagano, E.V.Pagano, M.Papa, S.Pirrone, G.Politi, F.Rizzo, P.Russotto, L.Quattrocchi, R.Smith, I.Stefan, A.Trifiro, M.Trimarchi, G.Verde, M.Vigilante, C.Wheldon

Experimental investigation of α condensation in light nuclei

NUCLEAR REACTIONS 12C(16O, 28Si)4He/6Li/7Li/7Be/9Be/10B/11B/11C/12C/13C/11N/12C/15O/15N/16O/F/Ne/20Ne/24Mg/28Si, E=160, 280, 400 MeV from the K800 cyclotron at the LNS-Catania accelerator facility; measured reaction product yields, σ, Eα, Iα using the Charged Heavy Ion Mass and Energy Resolving Array (CHIMERA) and Femtoscope Array for Correlation and Spectroscopy (FARCOS); deduced raw α-particle multiplicity, particle-identification plots (PIDs), interaction time plot, distribution of α-particle energies, excitation functions, Q values for different reaction channels, branching ratios for the 7-α breakup modes. Experiments aimed at search for α-gas states in 12C, 16O, 20Ne, 24Mg, 28Si. Results described by a hybrid of sequential decays and multiparticle breakup mechanisms, as no signatures for α condensation observed. Comparison of measured yields to the extended Hauser-Feshbach (EHF), and comparison of 7-α particle states to Fermi breakup model predictions.

doi: 10.1103/PhysRevC.100.034320
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2017JO07      Phys.Rev. C 95, 064321 (2017)

P.R.John, J.J.Valiente-Dobon, D.Mengoni, V.Modamio, S.Lunardi, D.Bazzacco, A.Gadea, C.Wheldon, T.R.Rodriguez, T.Alexander, G.de Angelis, N.Ashwood, M.Barr, G.Benzoni, B.Birkenbach, P.G.Bizzeti, A.M.Bizzeti-Sona, S.Bottoni, M.Bowry, A.Bracco, F.Browne, M.Bunce, F.Camera, L.Corradi, F.C.L.Crespi, B.Melon, E.Farnea, E.Fioretto, A.Gottardo, L.Grente, H.Hess, Tz.Kokalova, W.Korten, A.Kusoglu, S.Lenzi, S.Leoni, J.Ljungvall, R.Menegazzo, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, D.R.Napoli, Zs.Podolyak, G.Pollarolo, F.Recchia, P.Reiter, O.J.Roberts, E.Sahin, M.-D.Salsac, F.Scarlassara, M.Sferrazza, P.-A.Soderstrom, A.M.Stefanini, S.Szilner, C.A.Ur, A.Vogt, J.Walshe

In-beam γ-ray spectroscopy of the neutron-rich platinum isotope 200Pt toward the N=126 shell gap

NUCLEAR REACTIONS 198Pt(82Se, 80Se)200Pt, E=426 MeV; measured Eγ, Iγ, (80Se recoils)γγ-coin using PRISMA spectrometer for 80Se recoils and AGATA array for Doppler-corrected γ rays at XTU Tandem-ALPI accelerator of LNL-Legnaro facility. 200Pt; deduced levels, J, π, ground-state band, structure above the 17-ns, 7- isomer. Comparison with theoretical model calculations.

NUCLEAR STRUCTURE 190,192,194,196,198,200,202,204Pt; calculated particle-number-projected potential energy surfaces in (β2, γ) plane, yrast band excitation energies. Beyond mean-field, symmetry-conserving configuration-mixing (SCCM) calculations based on Gogny D1S energy density functionals. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.064321
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Data from this article have been entered in the XUNDL database. For more information, click here.


2017LI08      Phys.Rev. C 95, 031302 (2017)

K.C.W.Li, R.Neveling, P.Adsley, P.Papka, F.D.Smit, J.W.Brummer, C.Aa.Diget, M.Freer, M.N.Harakeh, Tz.Kokalova, F.Nemulodi, L.Pellegri, B.Rebeiro, J.A.Swartz, S.Triambak, J.J.van Zyl, C.Wheldon

Characterization of the proposed 4-α cluster state candidate in 16O

NUCLEAR REACTIONS 16O(α, α'), E=200 MeV; measured Eα, Iα, E(p), I(p), (particle)(particle)-coin, angular correlations of charged-particle decays from 16O via α and proton decays using K600 magnetic spectrometer at iThemba LABS. 16O; deduced levels, resonances, L-transfers, J, π, total widths and branching ratios for particle decays of resonances extracted from R-matrix fits, a resonance at 15.090 MeV, 0+ suggested as a candidate for the 4α cluster state, consistent with several theoretical cluster calculations.

doi: 10.1103/PhysRevC.95.031302
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2017SM03      Phys.Rev.Lett. 119, 132502 (2017)

R.Smith, Tz.Kokalova, C.Wheldon, J.E.Bishop, M.Freer, N.Curtis, D.J.Parker

New Measurement of the Direct 3α Decay from the 12C Hoyle State

NUCLEAR REACTIONS 12C(α, 3α)4He, E=40 MeV; measured reaction products, Eα, Iα; deduced Dalitz plots, upper limit for the rare direct 3α decay branch. Comparison with theoretical calculations.

doi: 10.1103/physrevlett.119.132502
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2017TO14      Phys.Rev. C 96, 044317 (2017)

D.Torresi, C.Wheldon, Tz.Kokalova, S.Bailey, A.Boiano, C.Boiano, M.Fisichella, M.Mazzocco, C.Parascandolo, D.Pierroutsakou, E.Strano, M.Zadro, M.Cavallaro, S.Cherubini, N.Curtis, A.Di Pietro, J.P.Fernandez-Garcia, P.Figuera, T.Glodariu, J.Grebosz, M.La Cognata, M.La Commara, M.Lattuada, D.Mengoni, R.G.Pizzone, C.Signorini, C.Stefanini, L.Stroe, C.Spitaleri

Evidence for 15O + α resonance structures in 19Ne via direct measurement

NUCLEAR REACTIONS 4He(15O, α), E=28.5 MeV, [secondary 15O beam from 1H(15N, 15O), E=80 MeV primary reaction at LNL-XTU, Legnaro tandem Van de Graaff accelerator; measured Eα, Iα using a double-sided silicon strip detector (DSSSD), absolute differential cross sections. 19Ne; deduced levels, resonances, J, π, Γα, total Γ, partial decay branches, reduced α-widths, 15O+α rotational band, cluster structure using R-matrix analysis with AZURE2 code. Comparison with previous experimental results, and with potential model calculation using the well-known 16O+α cluster band configurations. Relevance to α branching ratio in the astrophysical reaction rate for high-spin near-threshold resonances.

doi: 10.1103/PhysRevC.96.044317
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2437. Data from this article have been entered in the XUNDL database. For more information, click here.


2016SM02      Phys.Rev. C 94, 014320 (2016)

R.Smith, C.Wheldon, M.Freer, N.Curtis, Tz.Kokalova, S.Almaraz-Calderon, A.Aprahamian, N.I.Ashwood, M.Barr, B.Bucher, P.Copp, M.Couder, X.Fang, G.Goldring, F.Jung, S.R.Lesher, W.Lu, J.D.Malcolm, A.Roberts, W.P.Tan, V.A.Ziman

Evidence for a 3.8 MeV state in 9Be

NUCLEAR REACTIONS 9Be(α, n3α), E=22, 26 MeV; measured Eα, Iα using an array of double-sided silicon strip detectors (DSSSDs) at the Notre Dame FN Tandem Van de Graaff accelerator facility; extracted sum energy spectra for all four final-state particles, assumed to be 3α+n, 9Be excitation spectrum. 9Be; deduced levels, new state at 3.8 MeV, J, π, width, ratios of reduced widths to Wigner limits (decays to 8Be ground state). 9Be, 9B; comparison of levels and widths in mirror nuclei.

doi: 10.1103/PhysRevC.94.014320
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2016WA29      Phys.Rev. C 94, 054304 (2016)

J.Walshe, M.Freer, C.Wheldon, A.Soylu, N.L.Achouri, N.I.Ashwood, W.N.Catford, I.C.Celik, N.Curtis, F.Delaunay, B.Fernandez-Dominguez, L.Grassi, Tz.Kokalova, F.M.Marques, N.A.Orr, L.Prepolec, V.Scuderi, N.Soic, V.Tokic

Experimental study of high-lying states in 28Mg using the resonant elastic scattering of α particles

NUCLEAR REACTIONS 4He(24Ne, α), E=3.8 MeV/nucleon, [24Ne secondary beam from C(26Mg, X), E=E=82 MeV/nucleon at GANIL facility]; measured Eα, Iα, σ(Eα, θ) using thick target in inverse kinematics (TTIK) technique. 28Mg; deduced levels, resonances, J, π, α and total widths, ratio of reduced width to the Wigner limit. R-Matrix analysis using AZURE2 code. Comparisons with theoretical calculations of widths using the code GAMOW.

doi: 10.1103/PhysRevC.94.054304
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2366. Data from this article have been entered in the XUNDL database. For more information, click here.


2015SW01      Phys.Rev. C 91, 034317 (2015)

J.A.Swartz, B.A.Brown, P.Papka, F.D.Smit, R.Neveling, E.Z.Buthelezi, S.V.Fortsch, M.Freer, Tz.Kokalova, J.P.Mira, F.Nemulodi, J.N.Orce, W.A.Richter, G.F.Steyn

Spectroscopy of narrow, high-lying, low-spin states in 20Ne

NUCLEAR REACTIONS 22Ne(p, t), E=60 MeV; measured triton spectra, σ(θ) using QDD magnetic spectrometer at iThemba Labs. 20Ne; deduced levels, J, π, possible 5α cluster state, isospin T=2 states in 20Ne, 20O and 20F. Comparison of angular distributions with calculations using FRESCO code, and structure data with shell-model calculations using OXBASH code.

doi: 10.1103/PhysRevC.91.034317
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0768. Data from this article have been entered in the XUNDL database. For more information, click here.


2015WH01      Phys.Rev. C 91, 024308 (2015)

C.Wheldon, Tz.Kokalova, M.Freer, J.Walshe, R.Hertenberger, H.-F.Wirth, N.I.Ashwood, M.Barr, N.Curtis, Th.Faestermann, R.Lutter, J.D.Malcolm, D.J.Marin-Lambarri

Spectroscopy of 9B via high-resolution ejectile-tagged recoil break-up

NUCLEAR REACTIONS 9Be(3He, t)9B*, E=33 MeV; measured particle spectra, (9B breakup products)(triton)-coin using Munich-Q3D spectrograph at the MLL tandem Van de Graaff accelerator facility. 9B; deduced levels, J, π, total and partial widths for 8Be+p and 5Li+α channels. Comparison with earlier experimental results.

doi: 10.1103/PhysRevC.91.024308
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014BA35      Phys.Rev. C 90, 024302 (2014)

S.Bailey, M.Freer, Tz.Kokalova, S.Cruz, H.Floyd, D.J.Parker

Energy levels of 18F from the 14N+α resonant reaction

NUCLEAR REACTIONS 4He(14N, α), (14N, d), E≈46, 62 MeV; measured particle spectra, σ(E) as function of excitation energy at the University of Birmingham MC40 Cyclotron facility. Thick-target inverse kinematics (TTIK) and R-matrix analyses. 18F; deduced levels, resonances, J, π, widths, partial widths, candidates for α-cluster states, rotational bands. 14N(α, α), (α, p); 16O(d, d), (d, α); analyzed previous σ data by R-matrix. Comparison with previous experimental results, evaluated data, and theoretical calculations.

doi: 10.1103/PhysRevC.90.024302
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2235. Data from this article have been entered in the XUNDL database. For more information, click here.


2014JO05      Phys.Rev. C 90, 021301 (2014)

P.R.John, V.Modamio, J.J.Valiente-Dobon, D.Mengoni, S.Lunardi, T.R.Rodriguez, D.Bazzacco, A.Gadea, C.Wheldon, T.Alexander, G.de Angelis, N.Ashwood, M.Barr, G.Benzoni, B.Birkenbach, P.G.Bizzeti, A.M.Bizzeti-Sona, S.Bottoni, M.Bowry, A.Bracco, F.Browne, M.Bunce, F.Camera, B.Cederwall, L.Corradi, F.C.L.Crespi, P.Desesquelles, J.Eberth, E.Farnea, E.Fioretto, A.Gorgen, A.Gottardo, J.Grebosz, L.Grente, H.Hess, A.Jungclaus, Tz.Kokalova, A.Korichi, W.Korten, A.Kusoglu, S.Lenzi, S.Leoni, J.Ljungvall, G.Maron, W.Meczynski, B.Melon, R.Menegazzo, C.Michelagnoli, T.Mijatovic, B.Million, P.Molini, G.Montagnoli, D.Montanari, D.R.Napoli, P.Nolan, C.Oziol, Zs.Podolyak, G.Pollarolo, A.Pullia, B.Quintana, F.Recchia, P.Reiter, O.J.Roberts, D.Rosso, E.Sahin, M.-D.Salsac, F.Scarlassara, M.Sferrazza, J.Simpson, P.-A.Soderstrom, A.M.Stefanini, O.Stezowski, S.Szilner, Ch.Theisen, C.A.Ur, J.Walshe

Shape evolution in the neutron-rich osmium isotopes: Prompt γ-ray spectroscopy of 196Os

NUCLEAR REACTIONS 198Pt(82Se, X), E=426 MeV; measured Eγ, Iγ, γγ-, (84Kr)γ-coin using PRISMA spectrometer for fragments and AGATA array for γ rays at Tandem-ALPI-LNL accelerator facility. 196Os; deduced levels, J, π, γ-unstable/triaxial rotor yrast band. Comparison with state-of-the-art beyond-mean-field calculations.

NUCLEAR STRUCTURE 188,190,192,194,196,198Os; calculated particle number projected potential energy surfaces in (β2, γ) plane, level energies in the yrast bands using Gogny D1S interaction. State-of-the-art beyond-meanfield calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.021301
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2014MA37      Phys.Rev.Lett. 113, 012502 (2014)

D.J.Marin-Lambarri, R.Bijker, M.Freer, M.Gai, Tz.Kokalova, D.J.Parker, C.Wheldon

Evidence for Triangular D3h Symmetry in 12C

NUCLEAR REACTIONS 12C(α, 3α), E=40 MeV; measured reaction products, Eα, Iα; deduced yields, level scheme, J, π, high-spin states. Comparison with available data.

doi: 10.1103/PhysRevLett.113.012502
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2014WH02      Phys.Rev. C 90, 014319 (2014)

C.Wheldon, Tz.Kokalova, M.Freer, A.Glenn, D.J.Parker, T.Roberts, I.Walmsley

States at high excitation in 12C from the 12C(3He, 3He)3α reaction

NUCLEAR REACTIONS 12C(3He, 3He')3α, E=46 MeV; measured 3He spectra, 2α spectra from 8Be+α channel, yields of 6Li, 3,4He, 1,2H. 12C; deduced levels through reconstructed 8Beg.s.+α decay, isospin, widths, partial α widths, Comparison with previous experimental results. Discussed systematics of rotational states in 12C.

doi: 10.1103/PhysRevC.90.014319
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2013KO14      Phys.Rev. C 87, 057307 (2013)

Tz.Kokalova, M.Freer, Z.Buthelezi, J.Carter, R.W.Fearick, S.V.Fortsch, H.Fujita, R.Neveling, P.Papka, F.D.Smit, J.A.Swartz, I.Usman

Precision measurement of the 9.641 MeV, 3- state in 12C

NUCLEAR REACTIONS 12C(p, p'), E=66 MeV; measured E(p), I(p), σ(θ) using K600 magnetic spectrometer at iThemba LABS. 12C; deduced width of 9.641 MeV, 3- state. R-matrix analysis. Wigner limit and α-particle content.

doi: 10.1103/PhysRevC.87.057307
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2013KO15      Phys.Rev. C 87, 057309 (2013)

Tz.Kokalova, M.Freer, N.Curtis, N.I.Ashwood, M.Barr, J.D.Malcolm, C.Wheldon, V.A.Ziman, S.Almaraz-Calderon, A.Aprahamian, B.Bucher, M.Couder, X.Fang, F.Jung, W.Lu, A.Roberts, W.P.Tan, P.Copp, S.R.Lesher

Yield measurements for resonances above the multi-α threshold in 20Ne

NUCLEAR REACTIONS 16O(α, X), E=23.0-29.0 MeV; measured α and particle spectra, (particle)(particle)α-coin, yields for 8Be+8Be+α, and 8Be+12C(second 0+) channels. Measurements at Notre Dame facility. 20Ne; deduced levels, resonances, J. Monte Carlo simulations.

doi: 10.1103/PhysRevC.87.057309
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2012IC02      Phys.Rev. C 86, 031303 (2012)

T.Ichikawa, N.Itagaki, Y.Kanada-En'yo, Tz.Kokalova, W.von Oertzen

Search for three-α states around an 16O core in 28Si

NUCLEAR STRUCTURE 28Si; calculated 16O+α states including 24Mg+α, 16O12C basis wave functions, isoscalar monopole transition strengths, root-mean-square radii, density contours using Brink's α cluster model and the multiconfiguration mixing method. Hoyle-like 3α states.

doi: 10.1103/PhysRevC.86.031303
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2012WH01      Phys.Rev. C 86, 044328 (2012)

C.Wheldon, N.I.Ashwood, M.Barr, N.Curtis, M.Freer, Tz.Kokalova, J.D.Malcolm, V.A.Ziman, Th.Faestermann, H.-F.Wirth, R.Hertenberger, R.Lutter

Absolute partial decay-branch measurements in 13C

NUCLEAR REACTIONS 9Be(6Li, d)13C*, E=42 MeV; measured deuteron, neutron and α spectra from breakup of 13C, (particle)(particle)-coin, absolute partial branching ratios for neutron and α decays, widths using Q3D magnetic spectrograph at MLL, Munich facility. 13C; deduced levels, J, π, branching ratios, reduced widths, molecular band levels. Comparison with previous studies.

doi: 10.1103/PhysRevC.86.044328
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2012WH02      J.Phys.:Conf.Ser. 381, 012078 (2012)

C.Wheldon, N.I.Ashwood, M.Barr, N.Curtis, M.Freer, Tz.Kokalova, J.D.Malcolm, S.J.Spencer, V.A.Ziman, Th.Faestermann, R.Krucken, H.-F.Wirth, R.Hertenberger, R.Lutter, A.Bergmaier

Absolute decay width measurements in 16O

NUCLEAR REACTIONS 12C(6Li, d), E=42 MeV; measured E(deuteron), I(deuteron) using high-resolution Q3D spectrograph, recoil products, break-up products. 16O deduced α decay width of excited states between 13.9 and 15.9 MeV, relative and absolute α-decay width.

doi: 10.1088/1742-6596/381/1/012078
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2011BE06      Acta Phys.Pol. B42, 747 (2011)

C.Beck, P.Papka, A.Sanchez i Zafra, S.Thummerer, F.Azaiez, P.Bednarczyk, S.Courtin, D.Curien, O.Dorvaux, A.Goasduff, D.Lebhertz, A.Nourreddine, M.Rousseau, M.-D.Salsac, W.von Oertzen, B.Gebauer, C.Wheldon, Tz.Kokalova, G.Efimov, V.Zherebchevsky, Ch.Schulz, H.G.Bohlen, D.Kamanin, G.de Angelis, A.Gadea, S.Lenzi, D.R.Napoli, S.Szilner, M.Milin, W.N.Catford, D.G.Jenkins, G.Royer

Clusters in Light Nuclei

doi: 10.5506/APhysPolB.42.747
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2011BO14      Eur.Phys.J. A 47, 44 (2011)

H.G.Bohlen, W.von Oertzen, M.Milin, T.Dorsch, R.Krucken, T.Faestermann, R.Hertenberger, Tz.Kokalova, M.Mahgoub, C.Wheldon, H.-F.Wirth

Structures in 20O from the 14C(7Li, p) reaction at 44 MeV

NUCLEAR REACTIONS 14C(7Li, p), E=44 MeV; measured reaction products, proton spectrum; deduced level energies, J, π, high-spin states, σ(θ), widths of resonances, rotational bands.

doi: 10.1140/epja/i2011-11044-1
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2011FR12      Phys.Rev. C 84, 034317 (2011)

M.Freer, N.I.Ashwood, N.Curtis, A.Di Pietro, P.Figuera, M.Fisichella, L.Grassi, D.Jelavic Malenica, Tz.Kokalova, M.Koncul, T.Mijatovic, M.Milin, L.Prepolec, V.Scuderi, N.Skukan, N.Soic, S.Szilner, V.Tokic, D.Torresi, C.Wheldon

Analysis of states in 13C populated in 9Be + 4He resonant scattering

NUCLEAR REACTIONS 4He(9Be, α), E=12, 17, 20, 21.4 MeV; measured α spectra, excitation function, σ(E). 13C; deduced levels, J, π, resonances, widths, partial α and neutron widths, R-matrix analysis. Comparison with previous data.

doi: 10.1103/PhysRevC.84.034317
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2011IC03      Phys.Rev. C 83, 061301 (2011)

T.Ichikawa, N.Itagaki, T.Kawabata, Tz.Kokalova, W.von Oertzen

Gas-like state of α clusters around a 16O core in 24Mg

NUCLEAR STRUCTURE 24Mg; calculated energies and energy convergence of 0+ states with basis states for 16O+α+α configurations, strength distribution of the isoscalar E0 transitions from the ground state, α-cluster states around 16O. Microscopic α-cluster model, and overlap with Tohsaki-Horiuchi-Schuck-Ropke (THSR) wave functions.

doi: 10.1103/PhysRevC.83.061301
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2011IT05      Int.J.Mod.Phys. E20, 1012 (2011)

N.Itagaki, Tz.Kokalova, W.von Oertzen, J.A.Maruhn

Three-α cluster state around 40Ca core

NUCLEAR STRUCTURE 40Ca; calculated energy convergence of three α clusters around 40Ca. THSR wave function, time-dependent HF theory.

doi: 10.1142/S0218301311019167
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2011WH01      Phys.Rev. C 83, 064324 (2011)

C.Wheldon, N.I.Ashwood, M.Barr, N.Curtis, M.Freer, Tz.Kokalova, J.D.Malcolm, S.J.Spencer, V.A.Ziman, Th.Faestermann, R.Krucken, H.-F.Wirth, R.Hertenberger, R.Lutter, A.Bergmaier

High-resolution measurement of absolute α-decay widths in 16O

NUCLEAR REACTIONS 12C(6Li, d)16O, E=42 MeV; measured deuteron and α spectra, (4He+12C)d-coin. 16O; deduced levels, α decay widths. Cluster structures in 16O.

doi: 10.1103/PhysRevC.83.064324
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2010FR03      Nucl.Phys. A834, 621c (2010)

M.Freer, H.Fujita, Z.Buthelezi, J.Carter, R.W.Fearick, S.V.Fortsch, R.Neveling, S.M.Perez, P.Papka, F.D.Smit, J.A.Swartz, I.Usman, P.J.Haigh, N.I.Ashwood, T.Bloxham, N.Curtis, P.McEwan, H.G.Bohlen, T.Dorsch, Tz.Kokalova, Ch.Schulz, C.Wheldon

Cluster Structure of 12C and 11Be

NUCLEAR REACTIONS 12C(p, p'), E=66 MeV; measured Ep, Ip(θ=10null, 16null, 28null). 9Be(16O, 14O), E=234 MeV; measured E(particle), I(particle). 11Be; deduced levels, J, π. 11Be, 12C calculated levels, J, π, rotational and vibrational bands assuming 2α+3n for 11Be and 3α for 12C.

doi: 10.1016/j.nuclphysa.2010.01.107
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2010HA02      J.Phys.(London) G37, 035103 (2010)

P.J.Haigh, M.Freer, N.I.Ashwood, T.Bloxham, N.Curtis, H.G.Bohlen, T.Dorsch, Tz.Kokalova, C.Wheldon, W.N.Catford, N.P.Patterson, J.S.Thomas

Alpha decay widths of excited states of 16O

NUCLEAR REACTIONS 12C(13C, 9Be), E=141 MeV; measured reaction fragments; deduced high-spin states in 16O, decay widths, precise values for the α-decay branching ratios from the high-spin states.

doi: 10.1088/0954-3899/37/3/035103
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2010IT01      Phys.Rev. C 82, 014312 (2010)

N.Itagaki, Tz.Kokalova, W.von Oertzen

Three-α state around 40Ca

NUCLEAR STRUCTURE 40Ca; calculated potential energy, coulomb energy, density distribution, basis states using microscopic α-cluster model for three-α states.

doi: 10.1103/PhysRevC.82.014312
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2010VO04      Eur.Phys.J. A 43, 17 (2010)

W.von Oertzen, T.Dorsch, H.G.Bohlen, R.Krucken, T.Faestermann, R.Hertenberger, Tz.Kokalova, M.Mahgoub, M.Milin, C.Wheldon, H.-F.Wirth

Molecular and cluster structures in 18O

NUCLEAR REACTIONS 12C(7Li, p), E=44 MeV; measured reaction products; deduced proton energy spectrum and 18O excitation energies, cluster, molecular and rotational bands, σ(θ), J, π, resonance widths.

doi: 10.1140/epja/i2009-10894-2
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2010VO09      Eur.Phys.J. A 46, 345 (2010)

W.von Oertzen, M.Milin, T.Dorsch, H.G.Bohlen, R.Krucken, T.Faestermann, R.Hertenberger, Tz.Kokalova, M.Mahgoub, C.Wheldon, H.-F.Wirth

Shell model and band structures in 19O

NUCLEAR REACTIONS 13C(7Li, p)19O, E=44 MeV; measured reaction products, proton spectra; deduced level scheme, J, π, rotational bands, cluster states. Comparison with OXBASH and Nilsson model calculations.

doi: 10.1140/epja/i2010-11060-7
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2009BE34      Phys.Rev. C 80, 034604 (2009)

C.Beck, P.Papka, A.Sanchez i Zafra, S.Thummerer, F.Azaiez, P.Bednarczyk, S.Courtin, D.Curien, O.Dorvaux, D.Lebhertz, A.Nourreddine, M.Rousseau, W.von Oertzen, B.Gebauer, C.Wheldon, Tz.Kokalova, G.de Angelis, A.Gadea, S.Lenzi, S.Szilner, D.R.Napoli, W.N.Catford, D.G.Jenkins, G.Royer

Binary reaction decays from 24Mg+12C

NUCLEAR REACTIONS 12C(24Mg, X), E=130 MeV; measured Eγ, Iγ, γγ-, (fragment)γ-coin using Binary Reaction Spectrometer (BRS) in coincidence with Euroball IV array. 24Mg, 20Ne, 16O; deduced levels, J, π, deformations. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.80.034604
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2009HA01      Phys.Rev. C 79, 014302 (2009)

P.J.Haigh, M.Freer, N.I.Ashwood, T.Bloxham, N.Curtis, P.McEwan, H.G.Bohlen, T.Dorsch, Tz.Kokalova, Ch.Schulz, C.Wheldon

Neutron decay widths of excited states of 11Be

NUCLEAR REACTIONS 9Be(16O, 14O), E=234 MeV; measured 14O spectra, 10Be-14O coin, energies and angles of 10Be fragments, branching ratios, widths, neutron energies, neutron decay of excited states of 11Be to 10Be. 10,11Be; deduced levels, J, π. R-matrix formalism.

doi: 10.1103/PhysRevC.79.014302
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2009MI23      Eur.Phys.J. A 41, 335 (2009)

M.Milin, V.V.Ostashko, D.Miljanic, H.G.Bohlen, A.Di Pietro, O.Yu.Goryunov, Tz.Kokalova, M.Lattuada, A.Musumarra, W.von Oertzen, M.G.Pellegriti, S.Romano, S.Thummerer, A.Tumino, M.Zadro

States in 17O excited in the 13C + 9Be → 13C + 2α + n reaction at 90 MeV

NUCLEAR REACTIONS 9Be(13C, α), E=90 MeV; measured Eα, Iα, E(13C), 13Cα-coin; deduced 17O excitation energy spectrum. 17O; deduced levels, J, π. Comparison with other data.

doi: 10.1140/epja/i2009-10827-1
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2008BE38      Int.J.Mod.Phys. E17, 2049 (2008)

C.Beck, A.Sanchez i zafra, P.Papka, S.Thummerer, F.Azaiez, P.Bednarczyk, S.Courtin, D.Curien, O.Dorvaux, D.Lebhertz, A.Nourreddine, J.Robin, M.Rousseau, W.Von Oertzen, B.Gebauer, Tz.Kokalova, C.Wheldon, G.De Angelis, A.Gadea, S.Lenzi, S.Szilner, D.R.Napoli, W.N.Catford, D.G.Jenkins, G.Royer

Alpha-cluster states populated in 24Mg + 12C

NUCLEAR REACTIONS 12C(24Mg, X)16O/20Ne, E=130 MeV; measured Eγ, Iγ, particle-γ-coin.; deduced energy levels, J, π, level scheme.

doi: 10.1142/S0218301308011070
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2008BO37      Int.J.Mod.Phys. E17, 2067 (2008)

H.G.Bohlen, W.Von Oertzen, Tz.Kokalova, Ch.Schulz, R.Kalpakchieva, T.N.Massey, M.Milin

Band structures in 12Be: Experimental results

NUCLEAR REACTIONS 14C(12C, 14O), 10Be(14N, 12N), 9Be(12C, 9C), (15N, 12N), E=231, 216, 231, 240 MeV; measured reaction products; deduced 12Be energy levels, J, π.

doi: 10.1142/S0218301308011100
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2008HA27      Phys.Rev. C 78, 014319 (2008)

P.J.Haigh, N.I.Ashwood, T.Bloxham, N.Curtis, M.Freer, P.McEwan, D.Price, V.Ziman, H.G.Bohlen, Tz.Kokalova, Ch.Schulz, R.Torabi, W.von Oertzen, C.Wheldon, W.Catford, C.Harlin, R.Kalpakchieva, T.N.Massey

Measurement of α and neutron decay widths of excited states of 14C

NUCLEAR REACTIONS 12C(16O, 14O), E=234 MeV; measured charged particle spectra. 14C; deduced levels, J, π, configurations, widths of excited states. 7Li(9Be, 14C);14C(13C, 14C), (14C, 14C); 9Be(7Li, d); 13C(polarized p, π+), (n, n); comparison of levels.

RADIOACTIVITY 14C(n)(α); measured partial decay widths. 10Be, 13C; deduced levels, J, π, angular distributions, configurations. Comparison with model calculations.

doi: 10.1103/PhysRevC.78.014319
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2008IT01      Phys.Rev. C 77, 037301 (2008)

N.Itagaki, Tz.Kokalova, M.Ito, M.Kimura, W.von Oertzen

Coupling between α-condensed states and normal cluster states

NUCLEAR STRUCTURE 16O, 20Ne; calculated α-condensed states, energy convergence, wave functions using microscopic α-cluster model.

doi: 10.1103/PhysRevC.77.037301
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2008IT06      Phys.Rev. C 78, 017306 (2008)

N.Itagaki, M.Ito, K.Arai, S.Aoyama, Tz.Kokalova

Mixing of di-neutron components in 8He

NUCLEAR STRUCTURE 8He; calculated configurations, convergence of excited states, wave functions. Tohsaki-Horincki-Schuck-Ropke wave functions.

doi: 10.1103/PhysRevC.78.017306
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2008VO07      Eur.Phys.J. A 36, 279 (2008)

W.von Oertzen, B.Gebauer, G.Efimov, V.Zherebchevsky, Tz.Kokalova, S.Thummerer, Ch.Schulz, H.G.Bohlen, D.Kamanin, C.Beck, D.Curien, P.Papka, M.Rousseau, G.Royer, G.de Angelis

Fission and ternary cluster decay of hyper-deformed 56Ni

NUCLEAR REACTIONS 24Mg(32S, F), E=165.4 MeV; measured fission fragment energy, yields, (fragment)(fragment)-coin using Euroball-IV array; deduced reaction mechanism and ternary fission contribution using an extended Hauser-Feshbach method.

doi: 10.1140/epja/i2008-10592-7
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2008WH02      Nucl.Phys. A811, 276 (2008)

C.Wheldon, Tz.Kokalova, W.von Oertzen, B.Gebauer, H.G.Bohlen, Ch.Schulz, S.Thummerer, G.Efimov, C.Beck, D.Curien, P.Papka

Particle-γ coincidences and coplanarity in the 32S + 24Mg binary reaction

NUCLEAR REACTIONS 24Mg(32S, X), E=165.4 MeV; measured Eγ, Iγ, γγ-, (residue)γ-coin, reaction product yields; deduced reaction mechanism features and deformation. Doppler shift correction. Berlin binary reaction spectrometer and the Euroball IV array.

doi: 10.1016/j.nuclphysa.2008.08.006
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2007BO10      Eur.Phys.J. A 31, 279 (2007)

H.G.Bohlen, R.Kalpakchieva, W.von Oertzen, T.N.Massey, A.A.Ogloblin, G.de Angelis, M.Milin, Ch.Schulz, Tz.Kokalova, C.Wheldon

Spectroscopy of 17C and (sd)3 structures in heavy carbon isotopes

NUCLEAR REACTIONS 12,14C(12C, 9C), E=231 MeV; measured particle spectra, σ(E, θ). 15,17C deduced levels, J, π, configurations.

NUCLEAR STRUCTURE 15,16,17C, 19O; calculated levels, J, π. Shell model.

doi: 10.1140/epja/i2006-10275-5
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2007BO18      Phys.Rev. C 75, 054604 (2007)

H.G.Bohlen, T.Dorsch, Tz.Kokalova, W.von Oertzen, Ch.Schulz, C.Wheldon

Structure of 10Be from the 12C(12C, 14O)10Be reaction

NUCLEAR REACTIONS 12C(12C, 14O), E=211.4 MeV; measured σ and angular distributions. Deduced level energies, J, π.

doi: 10.1103/PhysRevC.75.054604
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2007BO27      Nucl.Phys. A787, 451c (2007)

H.G.Bohlen, T.Dorsch, Tz.Kokalova, W.von Oertzen, Ch.Schulz, C.Wheldon

New assignments for 10Be states from the 12C(12C, 14O)10Be reaction

NUCLEAR REACTIONS 12C(12C, 14O), E=211.4 MeV; measured σ(θ, E). 10Be deduced levels, J, π. Coupled channel calculations.

doi: 10.1016/j.nuclphysa.2006.12.067
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2006KO16      Phys.Rev.Lett. 96, 192502 (2006)

Tz.Kokalova, N.Itagaki, W.von Oertzen, C.Wheldon

Signatures for Multi-α-Condensed States

NUCLEAR STRUCTURE 52Fe; calculated folded potential for α-cluster and sequential α emission from excited nucleus.

NUCLEAR REACTIONS 24Mg(28Si, X), E=130 MeV; calculated folded potential for α-cluster and sequential α emission from excited compound nucleus.

doi: 10.1103/PhysRevLett.96.192502
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2006OS06      Iader.Fiz.Enerh. 7 no.2, 34 (2006)

V.Ostashko, M.Lattuada, M.Milin, O.Goryunov, A.Di Pietro, D.Miljanic, M.Zadro, A.Musumara, M.-G.Pellegriti, S.Romano, S.Tudisco, A.Tumino, P.Figuera, H.Bohlen, W.von Oertzen, T.Kokalova, S.Shumerer

Cluster structure of 9Be from many-particles reactions

NUCLEAR REACTIONS 9Be(13C, α), (13C, 2α), E=89.45 MeV; measured reaction products, Eα, Iα, particleα-coin. 9Be; deduced resonance energies, possible J, π, cluster structure - α-5He and n-8Be of 9nuclei.

doi: 10.15407/jnpae
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2005BO39      J.Phys.(London) G31, S1461 (2005)

H.G.Bohlen, R.Kalpakchieva, W.von Oertzen, T.N.Massey, A.A.Ogloblin, G.de Angelis, Ch.Schulz, Tz.Kokalova, C.Wheldon

Structure studies of excited states of 17C and 16C

NUCLEAR REACTIONS 13,14C(12C, 9C), E=231 MeV; measured excitation energy spectra. 16,17C deduced levels, J, π, configurations.

doi: 10.1088/0954-3899/31/10/014
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2005KE08      J.Phys.(London) G31, S1903 (2005)

K.L.Keyes, A.Papenberg, R.Chapman, J.Ollier, X.Liang, M.J.Burns, M.Labiche, K.M.Spohr, N.Amzal, C.Beck, P.Bednarczyk, F.Haas, G.Duchene, P.Papka, B.Gebauer, T.Kokalova, S.Thummerer, W.von Oertzen, C.Wheldon

Spectroscopy of Ne, Na and Mg isotopes approaching the Island of Inversion

NUCLEAR REACTIONS 150Nd(26Ne, X)22Ne/23Na/28Mg, E=160 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin. 22Ne, 23Na, 28Mg deduced levels, J, π. Euroball IV array, fragment separator.

doi: 10.1088/0954-3899/31/10/098
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2005KE11      Eur.Phys.J. A 25, Supplement 1, 431 (2005)

K.L.Keyes, A.Papenberg, R.Chapman, J.Ollier, X.Liang, M.J.Burns, M.Labiche, K.-M.Spohr, N.Amzal, C.Beck, P.Bednarczyk, F.Haas, G.Duchene, P.Papka, B.Gebauer, T.Kokalova, S.Thummerer, W.von Oertzen, C.Wheldon

Spectroscopy of Ne and Na isotopes: Preliminary results from a EUROBALL + Binary Reaction Spectrometer experiment

NUCLEAR REACTIONS 150Nd(26Mg, X), E=160 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin. 22Ne, 23Na deduced levels, J, π. Euroball IV array, binary reaction spectrometer.

doi: 10.1140/epjad/i2005-06-155-4
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2005KO01      Eur.Phys.J. A 23, 19 (2005)

Tz.Kokalova, W.von Oertzen, S.Torilov, S.Thummerer, M.Milin, A.Tumino, G.de Angelis, E.Farnea, A.Gadea, D.R.Napoli, Th.Kroll, N.Marginean, T.Martinez, M.Axiotis, S.M.Lenzi, C.Ur, P.Papka, M.Rousseau

Emission of unbound 8Be and 12C* (0+2) clusters in compound nucleus reactions

NUCLEAR REACTIONS 13C(18O, 8Be), (18O, 2α), E=100 MeV; 24Mg(28Si, 12C), (28Si, 3α), E=130 MeV; measured particle spectra, Eγ, Iγ, (particle)γ-coin; deduced cluster emission features. GASP, ISIS arrays.

doi: 10.1140/epja/i2004-10071-3
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2005MC12      J.Phys.(London) G31, S1921 (2005)

P.McEwan, M.Freer, N.Ashwood, N.Curtis, D.Price, V.Ziman, H.G.Bohlen, Tz.Kokalova, Ch.Schulz, R.Torabi, W.von Oertzen, C.Wheldon, T.N.Massey, R.Kalpakchieva, W.Catford

Investigation into the structure of 14C using recoil co-incidence techniques

NUCLEAR REACTIONS 12C(16O, 14O), E not given; measured excitation energy spectra. 14C deduced decay branch widths.

doi: 10.1088/0954-3899/31/10/102
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2005WH05      Eur.Phys.J. A 26, 321 (2005)

C.Wheldon, Tz.Kokalova, W.von Oertzen, S.Thummerer, H.G.Bohlen, B.Gebauer, A.Tumino, T.N.Massey, G.de Angelis, M.Axiotis, A.Gadea, Th.Kroll, N.Marginean, D.R.Napoli, M.De Poli, C.Ur, D.Bazzacco, S.M.Lenzi, C.Rossi Alvarez, S.Lunardi, R.Menegazzo, P.G.Bizzeti, A.M.Bizzeti-Sona

Octupole-deformed molecular bands in 21Ne

NUCLEAR REACTIONS 16O(7Li, np), E=29.4 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 21Ne deduced levels, J, π, configurations, dipole moment. GASP, ISIS arrays.

doi: 10.1140/epja/i2005-10186-y
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2004BE18      Nucl.Phys. A734, 453 (2004)

C.Beck, A.Sanchez i Zafra, F.Haas, P.Papka, V.Rauch, M.Rousseau, F.Azaiez, P.Bednarczyk, D.Curien, O.Dorvaux, A.Nourreddine, J.Robin, W.von Oertzen, B.Gebauer, Ts.Kokalova, S.Thummerer, G.De Angelis, A.Gadea, S.Lenzi, D.R.Napoli, S.Szilner, W.N.Catford, D.Jenkins

Search for 12C + 12C molecule in 24Mg* populated by 24Mg + 12C

NUCLEAR REACTIONS 12C(24Mg, 12C), E=130 MeV; measured Eγ, Iγ, (particle)γ-coin. 24Mg deduced transitions. Euroball IV array, binary reaction spectrometer.

doi: 10.1016/j.nuclphysa.2004.01.084
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2004BO12      Nucl.Phys. A734, 345 (2004)

H.G.Bohlen, R.Kalpakchieva, W.von Oertzen, T.N.Massey, B.Gebauer, S.M.Grimes, T.Kokalova, A.Lenz, M.Milin, Ch.Schulz, S.Thummerer, S.Torilov, A.Tumino

Particle-hole structures of neutron-rich Be- and C-isotopes

NUCLEAR REACTIONS 9Be(16O, 14O), E=233.5 MeV; 13C(12C, 14O), E not given; 13C(12C, 9C), E=230.7 MeV; measured σ(E, θ). 11Be, 16C deduced levels, J, π, configurations.

doi: 10.1016/j.nuclphysa.2004.01.063
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1680.


2004BO23      Nucl.Phys. A738, 333 (2004)

H.G.Bohlen, R.Kalpakchieva, W.von Oertzen, T.N.Massey, B.Gebauer, T.Kokalova, A.A.Ogloblin, Ch.Schulz, S.Thummerer

Structure of neutron-rich Beryllium and Carbon isotopes

NUCLEAR REACTIONS 9Be, 13,14C(12C, 9C), E=231 MeV; measured excitation energy spectra. 12Be, 16,17C deduced levels, J, π.

doi: 10.1016/j.nuclphysa.2004.04.056
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2004TO07      Eur.Phys.J. A 19, 307 (2004)

S.Torilov, S.Thummerer, W.von Oertzen, Tz.Kokalova, G.de Angelis, H.G.Bohlen, A.Tumino, M.Axiotis, E.Farnea, N.Marginean, T.Martinez, D.R.Napoli, M.De Poli, S.M.Lenzi, C.Ur, M.Rousseau, P.Papka

Spectroscopy of 40Ca and negative-parity bands

NUCLEAR REACTIONS 24Mg(28Si, 3α), E=139 MeV; measured Eγ, Iγ, γγ-, αγ-coin. 40Ca deduced levels, J, π, rotational bands, configurations. GASP, ISIS arrays. Level systematics in neighboring nuclides discussed.

doi: 10.1140/epja/i2003-10126-y
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2004VO10      Eur.Phys.J. A 21, 193 (2004)

W.von Oertzen, H.G.Bohlen, M.Milin, Tz.Kokalova, S.Thummerer, A.Tumino, R.Kalpakchieva, T.N.Massey, Y.Eisermann, G.Graw, T.Faestermann, R.Hertenberger, H.-F.Wirth

Search for cluster structure of excited states in 14C

NUCLEAR REACTIONS 12C(16O, 14O), (14N, 12N), (15N, 13N), E ≈ 15 MeV/nucleon; 16O(15N, 17N), E=16 MeV/nucleon; 8Be(7Li, d), E=44 MeV; measured particle spectra. 14C deduced levels, J, π, configurations, deformation, rotational bands, α-cluster features. Other data analyzed.

doi: 10.1140/epja/i2003-10188-9
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2003BO24      Yad.Fiz. 66, 1539 (2003); Phys.Atomic Nuclei 66, 1494 (2003)

H.G.Bohlen, W.von Oertzen, R.Kalpakchieva, B.Gebauer, S.M.Grimes, A.Lenz, T.N.Massey, M.Milin, Ch.Schulz, Tz.Kokalova, S.Torilov, S.Thummerer

Structure of Neutron-Rich Be and C Isotopes

NUCLEAR REACTIONS 9,10Be(14N, 13N), E=217.9 MeV; 9Be(13C, 11C), E=379 MeV; 9Be(15N, 12N), E=240 MeV; 10Be(14N, 12N), E=216 MeV; 12,13C(12C, 9C), E=230.7 MeV; measured excitation energy spectra. 9Be(16O, 14O), E=233.5 MeV; 13C(12C, 14O), E=230.7 MeV; measured σ(θ). 10,11,12Be deduced levels, J, π, configurations, rotational bands. 15,16C deduced level energies, widths, configurations.

doi: 10.1134/1.1601755
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2003BO38      Nucl.Phys. A722, 3c (2003)

H.G.Bohlen, R.Kalpakchieva, W.von Oertzen, T.N.Massey, B.Gebauer, S.M.Grimes, T.Kokalova, H.Lenske, A.Lenz, M.Milin, Ch.Schulz, S.Thummerer, S.Torilov, A.Tumino

Structure studies of neutron-rich Beryllium and Carbon isotopes

NUCLEAR REACTIONS 9Be(14N, 13N), E=217.9 MeV; 9Be(15N, 12N), E=240 MeV; 9Be(13C, 11C), E=379 MeV; 13C(12C, 9C), E=230.7 MeV; measured particle spectra, σ(E, θ). 10,11,12Be, 16C; deduced levels, J, π.

doi: 10.1016/S0375-9474(03)01327-7
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2003BO41      Phys.Rev. C 68, 054606 (2003)

H.G.Bohlen, R.Kalpakchieva, B.Gebauer, S.M.Grimes, H.Lenske, K.P.Lieb, T.N.Massey, M.Milin, W.von Oertzen, Ch.Schulz, T.Kokalova, S.Torilov, S.Thummerer

Spectroscopy of particle-hole states of 16C

NUCLEAR REACTIONS 12,13C(12C, 9C), E=230.7 MeV; measured particle spectra, σ(θ). 15,16C deduced levels, J, π, configurations.

doi: 10.1103/PhysRevC.68.054606
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1627.


2003BO50      Acta Phys.Hung.N.S. 18, 179 (2003)

H.G.Bohlen, W.von Oertzen, R.Kalpakchieva, B.Gebauer, S.M.Grimes, T.N.Massey, H.Lenske, A.Lenz, M.Milin, Ch.Schulz, T.Kokalova, S.Torilov, S.Thummerer

Structure Studies of Neutron-Rich Beryllium and Carbon Isotopes

NUCLEAR REACTIONS 9Be(13C, 11C), E=379 MeV; 9Be(14N, 13N), E=217.9 MeV; 9Be(15N, 12N), E=240 MeV; measured particle spectra. 10,11,12Be deduced rotational bands. 9Be(16O, 14O), E=233.5 MeV; 13C(12C, 14O), E=230.7 MeV; measured σ(E, θ). 11Be deduced levels, J, π. 13C(12C, 9C), E=230.7 MeV; measured particle spectra. 16C deduced levels. Quasiparticle RPA calculations.

doi: 10.1556/APH.18.2003.2-4.10
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2003TH01      J.Phys.(London) G29, 509 (2003)

S.Thummerer, W.von Oertzen, Tz.Kokalova, H.G.Bohlen, B.Gebauer, A.Tumino, T.N.Massey, G.de Angelis, M.Axiotis, A.Gadea, Th.Kroll, N.Marginean, D.R.Napoli, M.De Poli, C.Ur, D.Bazzacco, S.M.Lenzi, C.R.Alvarez, S.Lunardi, R.Menegazzo, P.G.Bizzeti, A.M.Bizzeti-Sona

Gamma-decay study of 21Na and 21Ne, octupole bands in 21Ne

NUCLEAR REACTIONS 16O(7Li, 2n), (7Li, np), E=27 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 21Ne, 21Na deduced levels, J, π, configurations, Coulomb energy differences. GASP, ISIS arrays.

doi: 10.1088/0954-3899/29/3/305
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2003TH04      Yad.Fiz. 66, 1474 (2003); Phys.Atomic Nuclei 66, 1428 (2003)

S.Thummerer, W.von Oertzen, Tz.Kokalova, H.G.Bohlen, B.Gebauer, A.Tumino, T.N.Massey, G.de Angelis, M.Axiotis, A.Gadea, Th.Kroll, N.Marginean, D.R.Napoli, M.De Poli, C.Ur, D.Bazzacco, S.M.Lenzi, C.Rossi Alvarez, S.Lunardi, R.Menegazzo, P.G.Bizzeti, A.M.Bizzeti-Sona

A Study of γ Decays and Octupole Bands in 21Ne and 21Na

NUCLEAR REACTIONS 16O(7Li, 2n), (7Li, np), E=27 MeV; measured Eγ, Iγ, γγ-coin. 21Ne, 21Na deduced levels, J, π, rotational bands. GASP array.

doi: 10.1134/1.1601745
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2000GA35      Eur.Phys.J. D 11, 341 (2000)

Yu.P.Gangrsky, D.Karaivanov, B.M.Markov, S.G.Zemlyanoi, Tz.T.Kokalova, K.P.Marinova, E.Stachowska, J.Dembczynski, J.Ruczkowski, B.Arcimowicz

Hyperfine Splitting and Isotope Shift in the Optical Transition 4f76s2 8S7/2 → 4f76s6p 6P5/2 of 151, 153, 155Eu Isotopes and Electromagnetic Moments of 155Eu

NUCLEAR MOMENTS 151,153,155Eu; measured hfs, isotope shifts. Laser-induced resonance fluorescence.

doi: 10.1007/s100530070061
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1999GA36      Acta Phys.Pol. B30, 1415 (1999)

Yu.P.Gangrsky, D.Karaivanov, B.N.Markov, S.Zemlyanoy, Tz.Kokalova, K.Marinova, E.Stachowska, J.Dembczynski, J.Ruczkowski, B.Arcimowicz

Hyperfine Structure Investigation of the 4f76s2 8S7/2 and 4f76s6p 6P5/2 States of Unstable Europium Isotope 155Eu

NUCLEAR MOMENTS 155Eu; measured hyperfine spectrum; deduced μ, quadrupole moment. High resolution laser spectroscopy.


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