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1. High-spin structures in Xe 132 and Xe 133 and evidence for isomers along the N=79 isotones

Author

Vogt, A, Siciliano, M, Birkenbach, B, Reiter, P, Hadyńska-Klȩk, K, Wheldon, C, Valiente-Dobón, JJ, Teruya, E, Yoshinaga, N, Arnswald, K, Bazzacco, D, Blazhev, A, Bracco, A, Bruyneel, B, Chakrawarthy, RS, Chapman, R, Cline, D, Corradi, L, Crespi, FCL, Cromaz, M, De Angelis, G, Eberth, J, Fallon, P, Farnea, E, Fioretto, E, Fransen, C, Freeman, SJ, Fu, B, Gadea, A, Gelletly, W, Giaz, A, Görgen, A, Gottardo, A, Hayes, AB, Hess, H, Hetzenegger, R, Hirsch, R, Hua, H, John, PR, Jolie, J, Jungclaus, A, Karayonchev, V, Kaya, L, Korten, W, Lee, IY, Leoni, S, Liang, X, Lunardi, S, MacChiavelli, AO, Menegazzo, R, Mengoni, D, Michelagnoli, C, Mijatović, T, Montagnoli, G, Montanari, D, Müller-Gatermann, C, Napoli, D, Pearson, CJ, Podolyák, Z, Pollarolo, G, Pullia, A, Queiser, M, Recchia, F, Regan, PH, Régis, JM, Saed-Samii, N, Şahin, E, Scarlassara, F, Seidlitz, M, Siebeck, B, Sletten, G, Smith, JF, Söderström, PA, Stefanini, AM, Stezowski, O, Szilner, S, Szpak, B, Teng, R, Ur, C, Warner, DD, Wolf, K, Wu, CY, and Zell, KO

Abstract

The transitional nuclei Xe132 and Xe133 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+Pb208 MNT reactions employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (ii) in the Xe136+Pt198 MNT reaction employing the GAMMASPHERE spectrometer in combination with the gas-detector array CHICO, and (iii) as an evaporation residue after a Te130(α,xn)Xe134-xn fusion-evaporation reaction employing the HORUS γ-ray array at the University of Cologne. The high-spin level schemes are considerably extended above the Jπ=(7-) and (10+) isomers in Xe132 and above the 11/2- isomer in Xe133. The results are compared to the high-spin systematics of the Z=54 as well as the N=78 and N=79 chains. Furthermore, evidence is found for a long-lived (T1/2â‰1μs) isomer in Xe133 which closes a gap along the N=79 isotones. Shell-model calculations employing the SN100PN and PQM130 effective interactions reproduce the experimental findings and provide guidance to the interpretation of the observed high-spin features.

Published
2017

2. High-spin structures in Xe132 and Xe133 and evidence for isomers along the N=79 isotones

Author

Vogt, A, Siciliano, M, Birkenbach, B, Reiter, P, Hadyńska-Klęk, K, Wheldon, C, Valiente-Dobón, JJ, Teruya, E, Yoshinaga, N, Arnswald, K, Bazzacco, D, Blazhev, A, Bracco, A, Bruyneel, B, Chakrawarthy, RS, Chapman, R, Cline, D, Corradi, L, Crespi, FCL, Cromaz, M, de Angelis, G, Eberth, J, Fallon, P, Farnea, E, Fioretto, E, Fransen, C, Freeman, SJ, Fu, B, Gadea, A, Gelletly, W, Giaz, A, Görgen, A, Gottardo, A, Hayes, AB, Hess, H, Hetzenegger, R, Hirsch, R, Hua, H, John, PR, Jolie, J, Jungclaus, A, Karayonchev, V, Kaya, L, Korten, W, Lee, IY, Leoni, S, Liang, X, Lunardi, S, Macchiavelli, AO, Menegazzo, R, Mengoni, D, Michelagnoli, C, Mijatović, T, Montagnoli, G, Montanari, D, Müller-Gatermann, C, Napoli, D, Pearson, CJ, Podolyák, Zs, Pollarolo, G, Pullia, A, Queiser, M, Recchia, F, Regan, PH, Régis, J-M, Saed-Samii, N, Şahin, E, Scarlassara, F, Seidlitz, M, Siebeck, B, Sletten, G, Smith, JF, Söderström, P-A, Stefanini, AM, Stezowski, O, Szilner, S, Szpak, B, Teng, R, Ur, C, Warner, DD, Wolf, K, Wu, CY, and Zell, KO

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Nuclear and plasma physics
Abstract

The transitional nuclei Xe132 and Xe133 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+Pb208 MNT reactions employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (ii) in the Xe136+Pt198 MNT reaction employing the GAMMASPHERE spectrometer in combination with the gas-detector array CHICO, and (iii) as an evaporation residue after a Te130(α,xn)Xe134-xn fusion-evaporation reaction employing the HORUS γ-ray array at the University of Cologne. The high-spin level schemes are considerably extended above the Jπ=(7-) and (10+) isomers in Xe132 and above the 11/2- isomer in Xe133. The results are compared to the high-spin systematics of the Z=54 as well as the N=78 and N=79 chains. Furthermore, evidence is found for a long-lived (T1/2â‰1μs) isomer in Xe133 which closes a gap along the N=79 isotones. Shell-model calculations employing the SN100PN and PQM130 effective interactions reproduce the experimental findings and provide guidance to the interpretation of the observed high-spin features.

Published
2017

3. Isomers and high-spin structures in the N=81 isotones Xe 135 and Ba 137

Author

Vogt, A, Birkenbach, B, Reiter, P, Blazhev, A, Siciliano, M, Hadyńska-Klȩk, K, Valiente-Dobón, JJ, Wheldon, C, Teruya, E, Yoshinaga, N, Arnswald, K, Bazzacco, D, Bowry, M, Bracco, A, Bruyneel, B, Chakrawarthy, RS, Chapman, R, Cline, D, Corradi, L, Crespi, FCL, Cromaz, M, De Angelis, G, Eberth, J, Fallon, P, Farnea, E, Fioretto, E, Freeman, SJ, Fu, B, Gadea, A, Geibel, K, Gelletly, W, Gengelbach, A, Giaz, A, Görgen, A, Gottardo, A, Hayes, AB, Hess, H, Hirsch, R, Hua, H, John, PR, Jolie, J, Jungclaus, A, Kaya, L, Korten, W, Lee, IY, Leoni, S, Lewandowski, L, Liang, X, Lunardi, S, Macchiavelli, AO, Menegazzo, R, Mengoni, D, Michelagnoli, C, Mijatović, T, Montagnoli, G, Montanari, D, Müller-Gatermann, C, Napoli, D, Pearson, CJ, Pellegri, L, Podolyák, Z, Pollarolo, G, Pullia, A, Queiser, M, Radeck, F, Recchia, F, Regan, PH, Rosiak, D, Saed-Samii, N, Şahin, E, Scarlassara, F, Schneiders, D, Seidlitz, M, Siebeck, B, Sletten, G, Smith, JF, Söderström, PA, Stefanini, AM, Steinbach, T, Stezowski, O, Szilner, S, Szpak, B, Teng, R, Ur, C, Vandone, V, Warner, DD, Wiens, A, Wu, CY, and Zell, KO

Abstract

The high-spin structures and isomers of the N=81 isotones Xe135 and Ba137 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+U238 and (ii) Xe136+Pb208 MNT reactions employing the high-resolution Advanced Gamma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (iii) in the Xe136+Pt198 MNT reaction employing the γ-ray array GAMMASPHERE in combination with the gas-detector array CHICO, and (iv) via a B11+Te130 fusion-evaporation reaction with the HORUS γ-ray array at the University of Cologne. The high-spin level schemesof Xe135 and Ba137 are considerably extended to higher energies. The 2058-keV (19/2-) state in Xe135 is identified as an isomer, closing a gap in the systematics along the N=81 isotones. Its half-life is measured to be 9.0(9) ns, corresponding to a reduced transition probability of B(E2,19/2-→15/2-)=0.52(6) W.u. The experimentally deduced reduced transition probabilities of the isomeric states are compared to shell-model predictions. Latest shell-model calculations reproduce the experimental findings generally well and provide guidance to the interpretation of the new levels.

Published
2017

4. Isomers and high-spin structures in the N=81 isotones Xe135 and Ba137

Author

Vogt, A, Birkenbach, B, Reiter, P, Blazhev, A, Siciliano, M, Hadyńska-Klęk, K, Valiente-Dobón, JJ, Wheldon, C, Teruya, E, Yoshinaga, N, Arnswald, K, Bazzacco, D, Bowry, M, Bracco, A, Bruyneel, B, Chakrawarthy, RS, Chapman, R, Cline, D, Corradi, L, Crespi, FCL, Cromaz, M, de Angelis, G, Eberth, J, Fallon, P, Farnea, E, Fioretto, E, Freeman, SJ, Fu, B, Gadea, A, Geibel, K, Gelletly, W, Gengelbach, A, Giaz, A, Görgen, A, Gottardo, A, Hayes, AB, Hess, H, Hirsch, R, Hua, H, John, PR, Jolie, J, Jungclaus, A, Kaya, L, Korten, W, Lee, IY, Leoni, S, Lewandowski, L, Liang, X, Lunardi, S, Macchiavelli, AO, Menegazzo, R, Mengoni, D, Michelagnoli, C, Mijatović, T, Montagnoli, G, Montanari, D, Müller-Gatermann, C, Napoli, D, Pearson, CJ, Pellegri, L, Podolyák, Zs, Pollarolo, G, Pullia, A, Queiser, M, Radeck, F, Recchia, F, Regan, PH, Rosiak, D, Saed-Samii, N, Şahin, E, Scarlassara, F, Schneiders, D, Seidlitz, M, Siebeck, B, Sletten, G, Smith, JF, Söderström, P-A, Stefanini, AM, Steinbach, T, Stezowski, O, Szilner, S, Szpak, B, Teng, R, Ur, C, Vandone, V, Warner, DD, Wiens, A, Wu, CY, and Zell, KO

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Nuclear and plasma physics
Abstract

The high-spin structures and isomers of the N=81 isotones Xe135 and Ba137 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+U238 and (ii) Xe136+Pb208 MNT reactions employing the high-resolution Advanced Gamma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (iii) in the Xe136+Pt198 MNT reaction employing the γ-ray array GAMMASPHERE in combination with the gas-detector array CHICO, and (iv) via a B11+Te130 fusion-evaporation reaction with the HORUS γ-ray array at the University of Cologne. The high-spin level schemesof Xe135 and Ba137 are considerably extended to higher energies. The 2058-keV (19/2-) state in Xe135 is identified as an isomer, closing a gap in the systematics along the N=81 isotones. Its half-life is measured to be 9.0(9) ns, corresponding to a reduced transition probability of B(E2,19/2-→15/2-)=0.52(6) W.u. The experimentally deduced reduced transition probabilities of the isomeric states are compared to shell-model predictions. Latest shell-model calculations reproduce the experimental findings generally well and provide guidance to the interpretation of the new levels.

Published
2017

5. Possible wobbling phenomenon in 125 Xe

Author

Prajapati, Mamta, Nag, Somnath, Singh, A. K., Al-khatib, A., Hübel, H., Neußer-neffgen, A., Hagemann, G. B., Sletten, G., Herskind, B., Hansen, C. R., Benzoni, G., Bracco, A., Janssens, R. V. F., Carpenter, M. P., Chowdhury, P., Prajapati, Mamta, Nag, Somnath, Singh, A. K., Al-khatib, A., Hübel, H., Neußer-neffgen, A., Hagemann, G. B., Sletten, G., Herskind, B., Hansen, C. R., Benzoni, G., Bracco, A., Janssens, R. V. F., Carpenter, M. P., and Chowdhury, P.

Published
2024

6. Nuclear structure studies of $^{24}$F

Author

Caceres, L., Lepailleur, A., Sorlin, O., Stanoiu, M., Sohler, D., Dombradi, Zs., Bogner, S. K., Brown, B. A., Hergert, H., Holt, J. D., Schwenk, A., Azaiez, F., Bastin, B., Borcea, C., Borcea, R., Bourgeois, C., Elekes, Z., Fülöp, Zs., Grévy, S., Gaudefroy, L., Grinyer, G. F., Guillemaud-Mueller, D., Ibrahim, F., Kerek, A., Krasznahorkay, A., Lewitowicz, M., Lukyanov, S. M., Mrazek, J., Negoita, F., De Oliveira, F., Penionzhkevich, Yu. -E., Podolyak, Zs., Porquet, M. G., Rotaru, F., Roussel-Chomaz, P., Saint-Laurent, M. G., Savajols, H., Sletten, G., Thomas, J. C., Timar, J., Timis, C., and Vajta, Zs.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The structure of the $^{24}$F nucleus has been studied at GANIL using the $\beta$ decay of $^{24}$O and the in-beam $\gamma$-ray spectroscopy from the fragmentation of projectile nuclei. Combining these complementary experimental techniques, the level scheme of $^{24}$F has been constructed up to 3.6 Mev by means of particle-$\gamma$ and particle-$\gamma\gamma$ coincidence relations. Experimental results are compared to shell-model calculations using the standard USDA and USDB interactions as well as ab-initio valence-space Hamiltonians calculated from the in-medium similarity renormalization group based on chiral two- and three-nucleon forces. Both methods reproduce the measured level spacings well, and this close agreement allows unidentified spins and parities to be consistently assigned., Comment: 5 figures, 2 tables

Published
2015

7. Possible wobbling phenomenon in Xe125

Author

Prajapati, Mamta, primary, Nag, Somnath, additional, Singh, A. K., additional, Al-Khatib, A., additional, Hübel, H., additional, Neußer-Neffgen, A., additional, Hagemann, G. B., additional, Sletten, G., additional, Herskind, B., additional, Hansen, C. R., additional, Benzoni, G., additional, Bracco, A., additional, Janssens, R. V. F., additional, Carpenter, M. P., additional, and Chowdhury, P., additional

Published
2024
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8. Observation of high-spin bands with large moments of inertia in Xe 124

Author

Nag, S, Singh, AK, Hagemann, GB, Sletten, G, Herskind, B, Døssing, T, Ragnarsson, I, Hübel, H, Bürger, A, Chmel, S, Wilson, AN, Rogers, J, Carpenter, MP, Janssens, RVF, Khoo, TL, Kondev, FG, Lauritsen, T, Zhu, S, Korichi, A, Stefanova, EA, Fallon, P, Nyakó, BM, Timár, J, and Juhász, K

Abstract

High-spin states in Xe124 have been populated using the Se80(Ca48,4n) reaction at a beam energy of 207 MeV and high-multiplicity, γ-ray coincidence events were measured using the Gammasphere spectrometer. Six high-spin bands with large moments of inertia, similar to those observed in neighboring nuclei, have been observed. The experimental results are compared with calculations within the framework of the cranked Nilsson-Strutinsky model. It is suggested that the configurations of the bands involve excitations of protons across the Z=50 shell gap coupled to neutrons within the N=50-82 shell or excited across the N=82 shell closure.

Published
2016

9. High-spin structure of Xe 134

Author

Vogt, A, Birkenbach, B, Reiter, P, Blazhev, A, Siciliano, M, Valiente-Dobón, JJ, Wheldon, C, Bazzacco, D, Bowry, M, Bracco, A, Bruyneel, B, Chakrawarthy, RS, Chapman, R, Cline, D, Corradi, L, Crespi, FCL, Cromaz, M, De Angelis, G, Eberth, J, Fallon, P, Farnea, E, Fioretto, E, Freeman, SJ, Gadea, A, Geibel, K, Gelletly, W, Gengelbach, A, Giaz, A, Görgen, A, Gottardo, A, Hayes, AB, Hess, H, Hua, H, John, PR, Jolie, J, Jungclaus, A, Korten, W, Lee, IY, Leoni, S, Liang, X, Lunardi, S, Macchiavelli, AO, Menegazzo, R, Mengoni, D, Michelagnoli, C, Mijatović, T, Montagnoli, G, Montanari, D, Napoli, D, Pearson, CJ, Pellegri, L, Podolyák, Z, Pollarolo, G, Pullia, A, Radeck, F, Recchia, F, Regan, PH, Şahin, E, Scarlassara, F, Sletten, G, Smith, JF, Söderström, PA, Stefanini, AM, Steinbach, T, Stezowski, O, Szilner, S, Szpak, B, Teng, R, Ur, C, Vandone, V, Ward, D, Warner, DD, Wiens, A, and Wu, CY

Abstract

Detailed spectroscopic information on the N∼82 nuclei is necessary to benchmark shell-model calculations in the region. The nuclear structure above long-lived isomers in Xe134 is investigated after multinucleon transfer (MNT) and actinide fission. Xenon-134 was populated as (i) a transfer product in Xe136+U238 and Xe136+Pb208 MNT reactions and (ii) as a fission product in the Xe136+U238 reaction employing the high-resolution Advanced Gamma Tracking Array (AGATA). Trajectory reconstruction has been applied for the complete identification of beamlike transfer products with the magnetic spectrometer PRISMA. The Xe136+Pt198 MNT reaction was studied with the γ-ray spectrometer GAMMASPHERE in combination with the gas detector array Compact Heavy Ion Counter (CHICO). Several high-spin states in Xe134 on top of the two long-lived isomers are discovered based on γγ-coincidence relationships and information on the γ-ray angular distributions as well as excitation energies from the total kinetic energy loss and fission fragments. The revised level scheme of Xe134 is extended up to an excitation energy of 5.832 MeV with tentative spin-parity assignments up to 16+. Previous assignments of states above the 7- isomer are revised. Latest shell-model calculations employing two different effective interactions reproduce the experimental findings and support the new spin and parity assignments.

Published
2016

12. Excited states in the neutron-rich nucleus 25F

Author

Vajta, Zs., Stanoiu, M., Sohler, D., Jansen, G. R., Azaiez, F., Dombrádi, Zs., Sorlin, O., Brown, B. A., Belleguic, M., Borcea, C., Bourgeois, C., Dlouhy, Z., Elekes, Z., ülöp, Zs. F, Grévy, S., Guillemaud-Mueller, D., Hagen, G., Hjorth-Jensen, M., Ibrahim, F., Kerek, A., Krasznahorkay, A., Lewitowicz, M., Lukyanov, S. M., Mandal, S., Mayet, P., Mrázek, J., Negoita, F., Penionzhkevich, Yu. -E., Podolyák, Zs., Roussel-Chomaz, P., Saint-Laurent, M. G., Savajols, H., Sletten, G., Timár, J., Timis, C., and Yamamoto, A.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The structure of the nucleus 25F was investigated through in-beam {\gamma}-ray spectroscopy of the fragmentation of 26Ne and 27,28Na ion beams. Based on the particle-{\gamma} and particle-{\gamma}{\gamma} coincidence data, a level scheme was constructed and compared with shell model and coupled-cluster calculations. Some of the observed states were interpreted as quasi single-particle states built on top of the closed-shell nucleus 24O, while the others were described as states arising from coupling of a single proton to the 2+ core excitation of 24O., Comment: 8 pages, 4 figures and 1 table

Published
2014
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13. Toward complete spectroscopy of Lu 167

Author

Roux, DG, Ma, WC, Hagemann, GB, Amro, H, Elema, DR, Fallon, P, Görgen, A, Herskind, B, Hübel, H, Li, Y, Macchiavelli, AO, Marsh, JC, Sletten, G, Ward, D, and Wilson, JN

Subjects
Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

Excited states in Lu167 were populated in the Sb123(Ca48,4n) reaction at 203 MeV and decay γ rays measured using the Gammasphere spectrometer array. Two triaxial strongly deformed bands were identified previously and interpreted as zero- and one-phonon wobbling excitations. As a result of more extensive band search, the level scheme has been considerably extended to include ten new rotational bands and some 630γ-ray transitions. A number of interband linking transitions were revealed, so that all but two bands could be connected with each other. Configurations are proposed for all new bands based on measured observables, with the help of cranked shell model calculations. A γ-ray sequence, previously suggested as a triaxial strongly deformed band based on quasiparticle excitations coexisting with the wobbling excitation in the triaxial potential well, has now been determined to be a signature partner of a coupled band, associated with a normal deformed five-quasiparticle configuration. The possibility of two new bands being associated with triaxial deformation is discussed.

Published
2015

14. $\gamma$-ray linear polarization measurements and $(g_{9/2})^{-3}$ neutron alignment in $^{91}$Ru

Author

Zheng, Y., de France, G., Clément, E., Dijon, A., Cederwall, B., Wadsworth, R., Bäck, T., Moradi, F. Ghazi, Jaworski, G., Nyakó, B. M., Nyberg, J., Palacz, M., Al-Azri, H., de Angelis, G., Atac, A., Aktaş, Ö., Bhattacharyya, S., Brock, T., Davies, P. J., Di Nitto, A., Dombradi, Zs., Gadea, A., Gal, J., Joshi, P., Juhasz, K., Julin, R., Jungclaus, A., Kalinka, G., Kownacki, J., La Rana, G., Lenzi, S. M., Molnar, J., Moro, R., Napoli, D. R., Singh, B. S. Nara, Persson, A., Recchia, F., Sandzelius, M., Scheurer, J. -N., Sletten, G., Sohler, D., Söderström, P. -A., Taylor, M. J., Timar, J., Valiente-Dobon, J. J., and Vardaci, E.

Subjects
Nuclear Experiment
Abstract

Linear polarization measurements have been performed for $\gamma$-rays in $^{91}$Ru produced with the $^{58}$Ni($^{36}$Ar, $2p1n$$\gamma$)$^{91}$Ru reaction at a beam energy of 111 MeV. The EXOGAM Ge clover array has been used to measure the $\gamma$-$\gamma$ coincidences, $\gamma$-ray linear polarization and $\gamma$-ray angular distributions. The polarization sensitivity of the EXOGAM clover detectors acting as Compton polarimeters has been determined in the energy range 0.3$-$1.3 MeV. Several transitions have been observed for the first time. Measurements of linear polarization and angular distribution have led to the firm assignments of spin differences and parity of high-spin states in $^{91}$Ru. More specifically, calculations using a semi-empirical shell model were performed to understand the structures of the first and second (21/2$^{+}$) and (17/2$^{+}$) levels. The results are in good agreement with the experimental data, supporting the interpretation of the non yrast (21/2$^{+}$) and (17/2$^{+}$) states in terms of the $J_{\rm max}$ and $J_{\rm max}-2$ members of the seniority-three $\nu(g_{9/2})^{-3}$ multiplet., Comment: 19 pages, 8 figures, 2 tables

Published
2013
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15. Spectroscopy of $^{26}$F

Author

Stanoiu, M., Sohler, D., Sorlin, O., Dombradi, Zs., Azaiez, F., Brown, B. A., Borcea, C., Bourgeois, C., Elekes, Z., Fülöp, Zs., Grévy, S., Guillemaud-Mueller, D., Ibrahim, F., Kerek, A., Krasznahorkay, A., Lewitowicz, M., Lukyanov, S. M., Mrazek, J., Negoita, F., Penionzhkevich, Yu. -E., Podolyak, Zs., Porquet, M. G., Roussel-Chomaz, P., Saint-Laurent, M. G., Savajols, H., Sletten, G., Timar, J., and Timis, C.

Subjects
Nuclear Experiment
Abstract

The structure of the weakly-bound $^{26}_{\;\;9}$F$_{17}$ odd-odd nucleus, produced from $^{27,28}$Na nuclei, has been investigated at GANIL by means of the in-beam $\gamma$-ray spectroscopy technique. A single $\gamma$-line is observed at 657(7) keV in $^{26}_{9}$F which has been ascribed to the decay of the excited J=$2^+$ state to the J=1$^+$ ground state. The possible presence of intruder negative parity states in $^{26}$F is also discussed., Comment: 3 pages, 1 figure, accepted for publication in Physical Review C

Published
2012
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16. Evidence for a spin-aligned neutron-proton paired phase from the level structure of $^{92}$Pd

Author

Cederwall, B., Moradi, F. Ghazi, Bäck, T., Johnson, A., Blomqvist, J., Clément, E., de France, G., Wadsworth, R., Andgren, K., Lagergren, K., Dijon, A., Jaworski, G., Liotta, R., Qi, C., Nyakó, B. M., Nyberg, J., Palacz, M., Al-Azri, H., Algora, A., de Angelis, G., Ataç, A., Bhattacharyya, S., Brock, T., Brown, J. R., Davies, P., Di Nitto, A., Dombrádi, Zs., Gadea, A., Gál, J., Hadinia, B., Johnston-Theasby, F., Joshi, P., Juhász, K., Julin, R., Jungclaus, A., Kalinka, G., Kara, S. O., Khaplanov, A., Kownacki, J., La Rana, G., Lenzi, S. M., Molnár, J., Moro, R., Napoli, D. R., Singh, B. S. Nara, Persson, A., Recchia, F., Sandzelius, M., Scheurer, J. -N., Sletten, G., Sohler, D., Söderström, P. -A., Taylor, M. J., Timár, J., Valiente-Dobón, J. J., Vardaci, E., and Williams, S.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The general phenomenon of shell structure in atomic nuclei has been understood since the pioneering work of Goeppert-Mayer, Haxel, Jensen and Suess.They realized that the experimental evidence for nuclear magic numbers could be explained by introducing a strong spin-orbit interaction in the nuclear shell model potential. However, our detailed knowledge of nuclear forces and the mechanisms governing the structure of nuclei, in particular far from stability, is still incomplete. In nuclei with equal neutron and proton numbers ($N = Z$), the unique nature of the atomic nucleus as an object composed of two distinct types of fermions can be expressed as enhanced correlations arising between neutrons and protons occupying orbitals with the same quantum numbers. Such correlations have been predicted to favor a new type of nuclear superfluidity; isoscalar neutron-proton pairing, in addition to normal isovector pairing (see Fig. 1). Despite many experimental efforts these predictions have not been confirmed. Here, we report on the first observation of excited states in $N = Z = 46$ nucleus $^{92}$Pd. Gamma rays emitted following the $^{58}$Ni($^{36}$Ar,2$n$)$^{92}$Pd fusion-evaporation reaction were identified using a combination of state-of-the-art high-resolution {\gamma}-ray, charged-particle and neutron detector systems. Our results reveal evidence for a spin-aligned, isoscalar neutron-proton coupling scheme, different from the previous prediction. We suggest that this coupling scheme replaces normal superfluidity (characterized by seniority coupling) in the ground and low-lying excited states of the heaviest N = Z nuclei. The strong isoscalar neutron- proton correlations in these $N = Z$ nuclei are predicted to have a considerable impact on their level structures, and to influence the dynamics of the stellar rapid proton capture nucleosynthesis process., Comment: 13 pages, 3 figures

Published
2011
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17. Coulomb excitation of 73Ga

Author

Diriken, J., Stefanescu, I., Balabanski, D., Blasi, N., Blazhev, A., Bree, N., Cederkäll, J., Cocolios, T. E., Davinson, T., Eberth, J., Ekström, A., Fedorov, D. V., Fedosseev, V. N., Fraile, L. M., Franchoo, S., Georgiev, G., Gladnishki, K., Huyse, M., Ivanov, O. V., Ivanov, V. S., Iwanicki, J., Jolie, J., Konstantinopoulos, T., Kröll, Th., Krücken, R., Köster, U., Lagoyannis, A., Bianco, G. Lo, Maierbeck, P., Marsh, B. A., Napiorkowski, P., Patronis, N., Pauwels, D., Reiter, P., Seliverstov, M., Sletten, G., Van de Walle, J., Van Duppen, P., Voulot, D., Walters, W. B., Warr, N., Wenander, F., and Wrzosek, K.

Subjects
Nuclear Experiment
Abstract

The B(E2; Ii -> If) values for transitions in 71Ga and 73Ga were deduced from a Coulomb excitation experiment at the safe energy of 2.95 MeV/nucleon using post-accelerated beams of 71,73Ga at the REX-ISOLDE on-line isotope mass separator facility. The emitted gamma rays were detected by the MINIBALL-detector array and B(E2; Ii->If) values were obtained from the yields normalized to the known strength of the 2+ -> 0+ transition in the 120Sn target. The comparison of these new results with the data of less neutron-rich gallium isotopes shows a shift of the E2 collectivity towards lower excitation energy when adding neutrons beyond N = 40. This supports conclusions from previous studies of the gallium isotopes which indicated a structural change in this isotopical chain between N = 40 and N = 42. Combined with recent measurements from collinear laser spectroscopy showing a 1/2- spin and parity for the ground state, the extracted results revealed evidence for a 1/2-; 3/2- doublet near the ground state in 73 31Ga42 differing by at most 0.8 keV in energy.

Published
2010
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18. High-spin spectroscopy of Xe-124,Xe-125,Xe-126

Author

Al-Khatib, A, Huebel, H, Bringel, P, Engelhardt, C, Neusser-Neffgen, A, Hagemann, GB, Hansen, CR, Herskind, B, Sletten, G, Bracco, A, Camera, F, Benzoni, G, Fallon, P, Clark, RM, Carpenter, MP, Janssens, RVF, Khoo, TL, Chowdhury, P, and Amro, H

Subjects
Nuclear & Particles Physics, Mathematical Sciences, Physical Sciences
Published
2007

19. Light charged particles as gateway to hyperdeformation

Author

Herskind, B, Hagbmann, GB, Døssing, T, Rønn Hansen, C, Schunck, N, Sletten, G, Ødegard, S, Hübel, H, Bringel, P, Bürger, A, Neusser, A, Singh, AK, Al-Khatib, A, Patel, SB, Nyakó, BM, Algora, A, Dombrádi, Z, Gál, J, Kalinka, G, Sohler, D, Molnár, J, Timár, J, Zolnai, L, Juhász, K, Bracco, A, Leon, S, Camera, F, Benzoni, G, Mason, P, Paleni, A, Million, B, Wieland, O, Bednarczyk, P, Azaiez, F, Byrski, T, Curien, D, Dakov, O, Duchene, G, Khalfallah, F, Gall, B, Piqeras, L, Robin, J, Dudek, J, Rowley, N, Redon, N, Hannachi, F, Scheurer, JN, Wilson, JN, Lopez-Martens, A, Korichi, A, Hauschild, K, Roccaz, J, Siem, S, Fallon, P, Lee, IY, Gorgen, A, Maj, A, Kmiecik, M, Brekiesz, M, Styczen, J, Zuber, K, Lisle, JC, Cederwall, B, Lagergren, K, Evans, AO, Rainovski, G, De Angelis, G, La Rana, G, Moro, R, Lieder, RM, Lieder, EO, Gast', W, Jäger, H, Pasternak, AA, Petrache, CM, and Petrache, D

Subjects
Nuclear & Particles Physics, Mathematical Sciences, Physical Sciences
Abstract

The Euroball-IV γ-detector array, equipped with the ancillary charged particle detector array DIAMANT was used to study the residues of the fusion reaction 64Ni ⇒ 128Ba at Ebeam = 255 and 261 MeV, in an attempt to reach the highest anguar momentum and verify the existence of predicted hyperdeformed rotational bands. No discrete hyperdeformed bands were identified, but nevertheless a breakthrough was obtained a systematic search for rotational ridge structure with very large moments of inertia J (2) ≥ 100 ℏ2 MeV(-1), in agreement with theoretical predictions for hyperdeformed shapes. Evidence for hyperdeformiation was obtained by charged particle + γ-ray gating, selectiong triple correlated ridge structures in the continuum of each of the nuclei, 118Te, 124Xe and 124,125Cs. In 7 additional nuclei, rotational ridges were also identified with J(2) = 71-77ℏ2Mev(-1), which most probably correspond to surperdeformed shape. The angular distributions of the emitted charged particles show an excess in forward direction over expectations from pure compound evaporation, which may indicate that in-complete fusion plays an important role in the population of very elongated shapes.

Published
2007

20. High-spin spectroscopy of 124,125,126Xe

Author

Al-Khatib, A, Huebel, H, Bringel, P, Engelhardt, C, Neusser-Neffgen, A, Hagemann, GB, Hansen, CR, Herskind, B, Sletten, G, Bracco, A, Camera, F, Benzoni, G, Fallon, P, Clark, RM, Carpenter, MP, Janssens, RVF, Khoo, TL, Chowdhury, P, and Amro, H

Subjects
Mathematical Sciences, Physical Sciences, Nuclear & Particles Physics, Mathematical sciences, Physical sciences
Published
2007

21. Evolution from spherical single-particle structure to stable triaxiality at high spins in Nd140

Author

Petrache, CM, Fantuzi, M, LoBianco, G, Mengoni, D, Neusser-Neffgen, A, Hübel, H, Al-Khatib, A, Bringel, P, Bürger, A, Nenoff, N, Schönwasser, G, Singh, AK, Ragnarsson, I, Hagemann, GB, Herskind, B, Jensen, DR, Sletten, G, Fallon, P, Görgen, A, Bednarczyk, P, Curien, D, Gangopadhyay, G, Korichi, A, Lopez-Martens, A, Rao, BVT, Reddy, TS, and Singh, Nirmal

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Nuclear and plasma physics
Abstract

The level structure of 60140Nd80 has been established up to spin 48 by in-beam γ-ray spectroscopy by use of the Zr96(Ca48, 4n) reaction. High-fold γ-ray coincidences were measured with the EUROBALL spectrometer. Twelve new rotational bands have been discovered at high spins. They are interpreted as being formed in a deep triaxial minimum at 2 0.25 and γ 35°. Possible configurations are assigned to the observed bands on the basis of configuration-dependent cranked Nilsson-Strutinsky calculations. © 2005 The American Physical Society.

Published
2005

22. Quadrupole moments of wobbling excitations in 163Lu

Author

Gorgen, A., Clark, R.M., Cromaz, M., Fallon, P., Hagemann, G.B., Hubel, H., Lee, I.Y., Macchiavelli, A.O., Sletten, G., Ward, D., and Bengtsson, R.

Subjects
Nuclear physics and radiation physics
Published
2004

23. Hunting grounds for Jacobi transitions and hyperdeformations

Author

Herskind, B, Benzoni, G, Wilson, JN, Døssing, T, Hagemann, GB, Sletten, G, Rønn Hansen, C, Jensen, DR, Bracco, A, Camera, F, Leoni, S, Mason, P, Wieland, O, Maj, A, Brekiesz, M, Kmiecik, M, Hübel, H, Bringel, P, Neusser, A, Singh, AK, Diamond, RM, Clark, RM, Cromaz, M, Fallon, P, Görgen, A, Lee, IY, Macchiavelli, AO, Ward, D, Hannachi, F, Korichi, A, Lopez-Martens, A, Byrski, T, Curien, D, Bednarczyk, P, Dudek, J, Amro, H, Ma, WC, Lisle, J, Ødegård, S, Petrache, C, Petrache, D, Steinhardt, T, and Thelen, O

Subjects
Nuclear & Particles Physics, Mathematical Sciences, Physical Sciences
Abstract

In recent attempts to search for exotic shapes, hyperdeformation (HD), and Jacobi transitions in Hf, Ba, Xe, Sn and Nd nuclei, ridge structures presumably originating from nuclei of very elongated shapes have been observed in 126Ba, with Gammasphere (GS) and in 126Xe, with Euroball-IV (EB-IV). After the promising results from GS, a second experiment in 126Ba followed at EB-IV, taking advantage of the use of the BGO Inner Ball (IB) for selecting the highest spins. The decay of the Giant Dipole Resonances (GDR) is also studied, and the analysis in progress. The Quasi-continuum transitions in the Jacobi region, show a significant decrease in energy for both 126Ba and 126Xe, compared to the Thomas-Fermi- and the LSD model predictions. Similar effects were recently found for other nuclei by Ward et al.

Published
2003

24. Development of γ-ray tracking detectors

Author

Lieder, RM, Gast, W, Jäger, HM, Mihailescu, L, Rossewij, M, Eberth, J, Pascovici, G, Thomas, HG, Weisshaar, D, Beck, F, Curien, D, Duchêne, G, Pachoud, E, Piqueras, I, Alvarez, CR, Bazzacco, D, Bellato, M, Kroell, T, Manea, C, Quintana, B, Venturelli, R, Napoli, DR, Rosso, D, Spolaore, P, Geraci, A, Pullia, A, Ripamonti, G, Camera, F, Leoni, S, Million, B, Wieland, O, Bracco, A, Pignanelli, M, Brambilla, S, Lisle, J, Smith, AG, Well, R, Nolan, P, Boston, A, Cullen, D, Descovich, M, Enqvist, T, Cederwall, B, Ideguchi, E, van der Marel, J, Nyberg, J, Herskind, B, Sletten, G, Wilson, J, Redouin, B, Henck, R, Gutknecht, D, and Jääskeläinen, K

Subjects
Mathematical Sciences, Physical Sciences, Nuclear & Particles Physics, Mathematical sciences, Physical sciences
Abstract

The next generation of 4π arrays for high-precision γ-ray spectroscopy AGATA will consist of γ-ray tracking detectors. They represent high-fold segmented Ge detectors and a front-end electronics, based on digital signal processing techniques, which allows to extract energy, timing and spatial information on the interactions of a γ-ray in the Ge detector by pulse shape analysis of its signals. Utilizing the information on the positions of the interaction points and the energies released at each point the tracks of the γ-rays in a Ge shell can be reconstructed in three dimensions on the basis of the Compton-scattering formula.

Published
2001

25. In-beam spectroscopy of 253,254No

Author

Herzberg, R.-D., Amzal, N., Bastin, J. E., Becker, F., Brew, P. M. T., Butler, P. A., Chewter, A. J. C., Cocks, J. F. C., Dorvaux, O., Eskola, K., Gerl, J., Greenlees, P. T., Hammond, N. J., Hauschild, K., Helariutta, K., Heßberger, F., Houry, M., Hürstel, A., Humphreys, R. D., Jones, G. D., Jones, P. M., Julin, R., Juutinen, S., Kankaanpää, H., Kettunen, H., Khoo, T. L., Korten, W., Kuusiniemi, P., Le Coz, Y., Leino, M., Leppänen, A. P., Lister, C. J., Lucas, R., Muikku, M., Nieminen, P., Page, R. D., Page, T., Rahkila, P., Reiter, P., Schlegel, Ch., Scholey, C., Sletten, G., Stezowski, O., Theisen, Ch., Trzaska, W. H., Uusitalo, J., Wollersheim, H. J., Äystö, Juha, editor, Dendooven, Peter, editor, Jokinen, Ari, editor, and Leino, Matti, editor

Published
2003
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26. Probing shell structure in neutron-rich nuclei with in-beam γ-spectroscopy

Author

Azaiez, F., Belleguic, M., Sohler, D., Stanoiu, M., Dombrádi, Zs., Sorlin, O., Timár, J., Amorini, F., Baiborodin, D., Bauchet, A., Becker, F., Borcea, C., Bourgeois, C., Dlouhy, Z., Donzaud, C., Duprat, J., Guillemaud-Mueller, D., Ibrahim, F., Lopez, M. J., Lucas, R., Lukyanov, S. M., Maslov, V., Mrazek, J., Moore, C., Nowacki, F., Nyakó, B. M., Penionzhkevich, Yu.-E., Saint-Laurent, M. G., Sarazin, F., Scarpaci, J. A., Sletten, G., Stodel, C., Taylor, M., Theisen, C., Voltolini, G., Äystö, Juha, editor, Dendooven, Peter, editor, Jokinen, Ari, editor, and Leino, Matti, editor

Published
2003
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27. Enhanced E1-Decay from Triaxial SD Bands in 164Lu

Author

Ødegård, S. W., Hagemann, G. B., Törmänen, S., Tjøm, P. O., Harsmann, A., Bergström, M., Bark, R. A., Herskind, B., Sletten, G., Görgen, A., Hübel, H., Aengenvoort, B., van Severen, U., Ur, C., Jensen, H. J., Napoli, D., Lenzi, S., Petrache, C., Fahlander, C., Ryde, H., Bracco, A., Frattini, S., Chapman, R., Cullen, D. M., King, S. L., Smit, F. D., editor, Lindsay, R., editor, and Förtsch, S. V., editor

Published
1999
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28. Shape evolution and magnetic rotation in 141Nd

Author

Zerrouki, T., Petrache, C. M., Leguillon, R., Hauschild, K., Korichi, A., Lopez-Martens, A., Frauendorf, S., Ragnarsson, I., Hübel, H., Neußer-Neffgen, A., Al-Khatib, A., Bringel, P., Bürger, A., Nenoff, N., Schönwaßer, G., Singh, A. K., Curien, D., Hagemann, G. B., Herskind, B., Sletten, G., Fallon, P., Görgen, A., and Bednarczyk, P.

Published
2015
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29. High-spin states and signature inversion in odd-odd 168Lu

Author

Roux, D. G., Ma, W. C., Hagemann, G. B., Elema, D. R., Fallon, P., Gorgen, A., Herskind, B., Huebel, H., Marsh, J. C., Sletten, G., Ward, D., and Wilson, J. N.

Subjects
EXCITATIONS, NUCLEI, WOBBLING MODE, BANDS
Abstract

High-spin states of the odd-odd nucleus Lu-168 were populated in the Sb-123(Ca-48, 3n) Lu-168 reaction at a beam energy of 203 MeV and decay gamma rays measured using the Gammasphere spectrometer array. The level scheme has been extended from spin 27 to 50 (h) over bar, and three new rotational bands have been added. A number of interband linking transitions were revealed, so that all but two bands could be connected with each other. High-spin band crossings, above the first vi(13/2) alignment, are delineated in most bands. Significant signature inversions are identified for the first time in the bands involving both favored and unfavored signatures of the pi h(9/2) orbital, which are likely caused by a residual proton-neutron interaction. A signature inversion with small amplitude is also observed in the pi d(5/2) circle times vi(13/2) band. Configurations are suggested for all bands based on their experimental properties, with the help of Cranked Shell Model calculations. No evidence is found for triaxial strongly deformed structures that were predicted by the calculations.

Published
2021
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30. Highly deformed band structures due to core excitations in ¹²³Xe

Author

Basu, Anwesha, Singh, A.K., Ragnarsson, I., Carlsson, B.G., Kardan, A., Hagemann, G.B., Sletten, G., Herskind, B., Hübel, H., Chmel, Sebastian, Wilson, A.N., Rogers, J., Janssens, R.V.F., Carpenter, M.P., Khoo, T.L., Kondev, F.G., Lauritsen, T., Zhu, S., Korichi, A., Fallon, P., Nyako, B.M., Timar, J., and Publica

Abstract

High-spin states in ¹²³Xe were populated in the 80Se(48Ca, 5n)¹²³Xe reaction at a beam energy of 207 MeV. g-ray coincidence events were recorded with the Gammasphere spectrometer. Four new high-spin bands have been discovered in this nucleus. The bands are compared with those calculated within the framework of cranked Nilsson-Strutinsky and cranked Nilsson-Strutinsky-Bogoliubov models. It is concluded that the configurations of the bands involve two-proton excitations across the Z=50 as well as excitation of neutrons across the N=82 shell gaps resulting in a large deformation, e2≈0.30 and g≈5°.

Published
2021

31. Highly deformed band structures due to core excitations in Xe 123

Author

Wilson, A.N., Carlsson, B.G., Khoo, T.L., Janssens, R.V.F., Timár, J., Kondev, F.G., Sletten, G., Rogers, J., Nyakó, B.M., Lauritsen, T., Korichi, A., Chmel, S., Basu, A., Singh, A.K., Zhu, S., Herskind, B., Hübel, H., Fallon, P., Kardan, A., Ragnarsson, I., Hagemann, G.B., and Carpenter, M.P.

Abstract

High-spin states in Xe123 were populated in the Se80(Ca48, 5n)Xe123 reaction at a beam energy of 207 MeV. γ-ray coincidence events were recorded with the Gammasphere spectrometer. Four new high-spin bands have been discovered in this nucleus. The bands are compared with those calculated within the framework of cranked Nilsson-Strutinsky and cranked Nilsson-Strutinsky-Bogoliubov models. It is concluded that the configurations of the bands involve two-proton excitations across the Z=50 as well as excitation of neutrons across the N=82 shell gaps resulting in a large deformation, 2≈0.30 and γ≈5°C.

Published
2021
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32. Highly deformed band structures due to core excitations in 123Xe

Author

Basu, Anwesha, Singh, A. K., Ragnarsson, I., Carlsson, B. G., Kardan, A., Hagemann, G. B., Sletten, G., Herskind, B., Huebel, H., Chmel, S., Wilson, A. N., Rogers, J., Janssens, R. V. F., Carpenter, M. P., Khoo, T. L., Kondev, F. G., Lauritsen, T., Zhu, S., Korichi, A., Fallon, P., Nyako, B. M., Timar, J., Basu, Anwesha, Singh, A. K., Ragnarsson, I., Carlsson, B. G., Kardan, A., Hagemann, G. B., Sletten, G., Herskind, B., Huebel, H., Chmel, S., Wilson, A. N., Rogers, J., Janssens, R. V. F., Carpenter, M. P., Khoo, T. L., Kondev, F. G., Lauritsen, T., Zhu, S., Korichi, A., Fallon, P., Nyako, B. M., and Timar, J.

Abstract

High-spin states in Xe-123 were populated in the Se-80(Ca-48, 5n) Xe-123 reaction at a beam energy of 207 MeV. gamma-ray coincidence events were recorded with the Gammasphere spectrometer. Four new high-spin bands have been discovered in this nucleus. The bands are compared with those calculated within the framework of cranked Nilsson-Strutinsky and cranked Nilsson-Strutinsky-Bogoliubov models. It is concluded that the configurations of the bands involve two-proton excitations across the Z = 50 as well as excitation of neutrons across the N = 82 shell gaps resulting in a large deformation, epsilon(2) approximate to 0.30 and gamma approximate to 5 degrees.

Published
2021

33. Study of collisions of the radioactive 24Ne beam at 7.9 MeV/u on 208Pb

Author

Benzoni, G., Azaiez, F., Stefan, G. I., Franchoo, S., Battacharyya, S., Borcea, R., Bracco, A., Corradi, L., Curien, D., De France, G., Dombradi, Zs., Fioretto, E., Grevy, S., Ibrahim, F., Leoni, S., Montanari, D., Mukherjee, G., Pollarolo, G., Redon, N., Regan, P. H., Schmitt, C., Sletten, G., Sohler, D., Stanoiu, M., Szilner, S., and Verney, D.

Published
2010
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34. Coulomb excitation of the odd-odd isotopes 106, 108In

Author

Ekström, A., Cederkäll, J., Fahlander, C., Hjorth-Jensen, M., Engeland, T., Blazhev, A., Butler, P. A., Davinson, T., Eberth, J., Finke, F., Görgen, A., Górska, M., Hurst, A. M., Ivanov, O., Iwanicki, J., Köster, U., Marsh, B. A., Mierzejewski, J., Reiter, P., Siem, S., Sletten, G., Stefanescu, I., Tveten, G. M., Van de Walle, J., Voulot, D., Warr, N., Weisshaar, D., Wenander, F., and Zielińska, M.

Published
2010
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35. Transition to non-collective states at high spin in 124Xe

Author

Al-Khatib, A., Hübel, H., Bringel, P., Engelhardt, C., Neußer-Neffgen, A., Hagemann, G. B., Hansen, C. R., Herskind, B., Sletten, G., Bracco, A., Camera, F., Benzoni, G., Fallon, P., Clark, R. M., Carpenter, M. P., Janssens, R. V. F., Khoo, T. L., Lauritsen, T., Chowdhury, P., Amro, H., Singh, A. K., and Bengtsson, R.

Published
2008
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36. In-beam γ spectroscopy using DIC with a radioactive Ne beam

Author

Benzoni, G., Azaiez, F., Leoni, S., Battacharyya, S., Borcea, R., Bracco, A., Corradi, L., Curien, D., De France, G., Dombrádi, Zs., Fioretto, E., Franchoo, S., Grevy, S., Ibrahim, F., Iulian, S., Mukherjee, G., Navin, A., Pollarolo, G., Redon, N., Regan, P. H., Rejmund, M., Schmitt, C., Sletten, G., Sohler, D., Stanoiu, M., Szilner, S., and Verney, D.

Published
2007
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37. Shape coexistence in 74Kr and 76Kr

Author

Görgen, A., Clément, E., Korten, W., Bouchez, E., Chatillon, A., Hürstel, A., Le Coz, Y., Theisen, Ch., Wilson, J. N., Zielinska, M., Andreoiu, C., Becker, F., Butler, P., Casandjian, J. M., Catford, W. N., Czosnyka, T., de France, G., Gerl, J., Herzberg, R.-D., Iwanicki, J., Jenkins, D. G., Jones, G. D., Napiorkowski, P. J., Sletten, G., and Timis, C.

Published
2007
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38. Evolution of collective and noncollective structures in Xe 123

Author

Chmel, S., Timár, J., Korichi, A., Hagemann, G.B., Janssens, R.V.F., Nyakó, B.M., Fallon, P., Singh, A.K., Basu, A., Carpenter, M.P., Wilson, A.N., Ragnarsson, I., Sletten, G., Hübel, H., Nag, S., Zhu, S., Lauritsen, T., Rogers, J., Khoo, T.L., Herskind, B., and Kondev, F.G.

Abstract

An experiment involving a heavy-ion-induced fusion-evaporation reaction was carried out where high-spin states of Xe123 were populated in the Se80(Ca48,5n)Xe123 reaction at 207 MeV beam energy. Gamma-ray coincidence events were recorded with the Gammasphere Ge detector array. The previously known level scheme was confirmed and enhanced with the addition of five new band structures and several interband transitions. Cranked Nilsson-Strutinsky (CNS) calculations were performed and compared with the experimental results in order to assign configurations to the bands.

Published
2020
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39. Evolution of collective and noncollective structures in ¹²³Xe

Author

Basu, Anwesha, Singh, A.K., Nag, S., Hagemann, G.B., Sletten, G., Herskind, B., Wilson, A.N., Rogers, J., Ragnarsson, I., Hübel, H., Chmel, Sebastian, Janssens, R.V.F., Carpenter, M.P., Khoo, T.L., Kondev, F.G., Lauritsen, T., Zhu, S., Korichi, A., Fallon, P., Nyako, B.M., Timar, J., and Publica

Abstract

An experiment involving a heavy-ion-induced fusion-evaporation reaction was carried out where high-spin states of ¹²³Xe were populated in the 80Se(48Ca, 5n)¹²³Xe reaction at 207 MeV beam energy. Gamma-ray coincidence events were recorded with the Gammasphere Ge detector array. The previously known level scheme was confirmed and enhanced with the addition of five new band structures and several interband transitions. Cranked Nilsson-Strutinsky (CNS) calculations were performed and compared with the experimental results in order to assign configurations to the bands.

Published
2020

40. Evolution of collective and noncollective structures in $^{123}\mathrm{Xe}$

Author

Basu, Anwesha, Singh, A.K., Nag, S., Hagemann, G.B., Sletten, G., Herskind, B., Wilson, A.N., Rogers, J., Ragnarsson, I., Hübel, H., Chmel, S., Janssens, R.V.F., Carpenter, M.P., Khoo, T.L., Kondev, F.G., Lauritsen, T., Zhu, S., Korichi, A., Fallon, P., Nyakó, B.M., Timár, J., Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Nuclear Structure
Abstract

International audience; An experiment involving a heavy-ion-induced fusion-evaporation reaction was carried out where high-spin states of Xe123 were populated in the Se80(Ca48,5n)Xe123 reaction at 207 MeV beam energy. Gamma-ray coincidence events were recorded with the Gammasphere Ge detector array. The previously known level scheme was confirmed and enhanced with the addition of five new band structures and several interband transitions. Cranked Nilsson-Strutinsky (CNS) calculations were performed and compared with the experimental results in order to assign configurations to the bands.

Published
2020
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41. Capture cross sections for very heavy systems

Author

Rowley, N., Grar, N., Ntshangase, S. S., Bark, R. A., Förtsch, S. V., Lawrie, J. J., Gueorguieva, E. A., Maliage, S. M., Mudau, L. J., Mullins, S. M., Ndwandwe, O. M., Neveling, R., Sletten, G., Smith, F. D., and Theron, C.

Published
2006
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42. Evolution of collective and noncollective structures in 123Xe

Author

Basu, Anwesha, Singh, A. K., Nag, S., Hagemann, G. B., Sletten, G., Herskind, B., Wilson, A. N., Rogers, J., Ragnarsson, I, Huebel, H., Chmel, S., Janssens, R. V. F., Carpenter, M. P., Khoo, T. L., Kondev, F. G., Lauritsen, T., Zhu, S., Korichi, A., Fallon, P., Nyako, B. M., Timar, J., Basu, Anwesha, Singh, A. K., Nag, S., Hagemann, G. B., Sletten, G., Herskind, B., Wilson, A. N., Rogers, J., Ragnarsson, I, Huebel, H., Chmel, S., Janssens, R. V. F., Carpenter, M. P., Khoo, T. L., Kondev, F. G., Lauritsen, T., Zhu, S., Korichi, A., Fallon, P., Nyako, B. M., and Timar, J.

Published
2020

43. Evidence for wobbling excitation in 161Lu

Author

Bringel, P., Hagemann, G. B., Hübel, H., Al-khatib, A., Bednarczyk, P., Bürger, A., Curien, D., Gangopadhyay, G., Herskind, B., Jensen, D. R., Joss, D. T., Kröll, Th., Lo Bianco, G., Lunardi, S., Ma, W. C., Nenoff, N., Neußer-Neffgen, A., Petrache, C. M., Schönwasser, G., Simpson, J., Singh, A. K., Singh, N., and Sletten, G.

Published
2005
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44. Alpha-decay study of 218U; a search for the sub-shell closure at Z = 92

Author

Leppänen, A. -P., Uusitalo, J., Eeckhaudt, S., Enqvist, T., Eskola, K., Grahn, T., Heßberger, F. P., Greenlees, P. T., Jones, P., Julin, R., Juutinen, S., Kettunen, H., Kuusiniemi, P., Leino, M., Nieminen, P., Pakarinen, J., Perkowski, J., Rahkila, P., Scholey, C., Sletten, G., Gross, Carl J., editor, Nazarewicz, Witold, editor, and Rykaczewski, Krzysztof P., editor

Published
2005
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45. High-spin states and signature inversion in odd-odd Lu168

Author

Roux, D. G., primary, Ma, W. C., additional, Hagemann, G. B., additional, Elema, D. R., additional, Fallon, P., additional, Görgen, A., additional, Herskind, B., additional, Hübel, H., additional, Marsh, J. C., additional, Sletten, G., additional, Ward, D., additional, and Wilson, J. N., additional

Published
2021
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46. Highly deformed band structures due to core excitations in Xe123

Author

Basu, Anwesha, primary, Singh, A. K., additional, Ragnarsson, I., additional, Carlsson, B. G., additional, Kardan, A., additional, Hagemann, G. B., additional, Sletten, G., additional, Herskind, B., additional, Hübel, H., additional, Chmel, S., additional, Wilson, A. N., additional, Rogers, J., additional, Janssens, R. V. F., additional, Carpenter, M. P., additional, Khoo, T. L., additional, Kondev, F. G., additional, Lauritsen, T., additional, Zhu, S., additional, Korichi, A., additional, Fallon, P., additional, Nyakó, B. M., additional, and Timár, J., additional

Published
2021
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47. Structure of the neutron-rich 37, 39P and 43, 45Cl nuclei

Author

Sorlin, O., Dombrádi, Zs., Sohler, D., Azaiez, F., Timár, J., Penionzhkevich, Yu. -E., Amorini, F., Baiborodin, D., Bauchet, A., Becker, F., Belleguic, M., Borcea, C., Bourgeois, C., Dlouhy, Z., Donzaud, C., Duprat, J., Gaudefroy, L., Guillemaud-Mueller, D., Ibrahim, F., Lopez, M. J., Lucas, R., Lukyanov, S. M., Maslov, V., Mrazek, J., Moore, C., Nowacki, F., Pougheon, F., Saint-Laurent, M. G., Sarazin, F., Scarpaci, J. A., Sletten, G., Stanoiu, M., Stodel, C., Taylor, M., and Theisen, Ch.

Published
2004
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48. Multi-quasiparticle states in 184 W via multi-nucleon transfer

Author

Wheldon, C., Valiente-Dobón, J. J., Regan, P. H., Pearson, C. J., Wu, C. Y., Smith, J. F., Macchiavelli, A. O., Cline, D., Chakrawarthy, R. S., Chapman, R., Cromaz, M., Fallon, P., Freeman, S. J., Görgen, A., Gelletly, W., Hayes, A., Hua, H., Langdown, S. D., Lee, I. Y., Liang, X., Podolyák, Zs., Sletten, G., Teng, R., Ward, D., Warner, D. D., and Yamamoto, A. D.

Published
2004
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50. Maximally aligned states in 99Ag

Author

Sohler, D., Dombrádi, Zs., Blomqvist, J., Cederkäll, J., Huijnen, J., Lipoglavšek, M., Palacz, M., Atac, A., Fahlander, C., Grawe, H., Johnson, A., Kerek, A., Klamra, W., Kownacki, J., Likar, A., Norlin, L.-O., Nyberg, J., Persson, J., Seweryniak, D., de Angelis, G., Bednarczyk, P., Foltescu, D., Jerrestam, D., Juutinen, S., Mäkelä, E., de Poli, M., Roth, H.A., Shizuma, T., Skeppstedt, Ö., Sletten, G., Timár, J., Törmänen, S., and Weiszflog, M.

Published
2003
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