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21 results on '"Cortés, M.L."'

1. The DESPEC setup for GSI and FAIR

Author

Mistry, A.K., Albers, H.M., Arıcı, T., Banerjee, A., Benzoni, G., Cederwall, B., Gerl, J., Górska, M., Hall, O., Hubbard, N., Kojouharov, I., Jolie, J., Martinez, T., Podolyák, Zs., Regan, P.H., Tain, J.L., Tarifeno-Saldivia, A., Schaffner, H., Werner, V., Ağgez, G., Agramunt, J., Ahmed, U., Aktas, O., Alcayne, V., Algora, A., Alhomaidhi, S., Amjad, F., Appleton, C., Armstrong, M., Balogh, M., Banerjee, K., Bednarczyk, P., Benito, J., Bhattacharya, C., Black, P., Blazhev, A., Bottoni, S., Boutachkov, P., Bracco, A., Bruce, A.M., Brunet, M., Bruno, C.G., Burrows, I., Calvino, F., Canavan, R.L., Cano-Ott, D., Chishti, M.M.R., Coleman-Smith, P., Cortés, M.L., Cortes, G., Crespi, F., Das, B., Davinson, T., De Blas, A., Dickel, T., Doncel, M., Ertoprak, A., Esmaylzadeh, A., Fornal, B., Fraile, L.M., Galtarossa, F., Gottardo, A., Guadilla, V., Ha, J., Haettner, E., Häfner, G., Heggen, H., Herrmann, P., Hornung, C., Jazrawi, S., John, P.R., Jokinen, A., Jones, C.E., Kahl, D., Karayonchev, V., Kazantseva, E., Kern, R., Knafla, L., Knöbel, R., Koseoglou, P., Kosir, G., Kostyleva, D., Kurz, N., Kuzminchuk, N., Labiche, M., Lawson, J., Lazarus, I., Lenzi, S.M., Leoni, S., Llanos-Expósito, M., Lozeva, R., Maj, A., Meena, J.K., Mendoza, E., Menegazzo, R., Mengoni, D., Mertzimekis, T.J., Mikolajczuk, M., Million, B., Mont-Geli, N., Morales, A.I., Morral, P., Mukha, I., Murias, J.R., Nacher, E., Napiralla, P., Napoli, D.R., Nara-Singh, B.S., O’Donnell, D., Orrigo, S.E.A., Page, R.D., Palit, R., Pallas, M., Pellumaj, J., Pelonis, S., Pentilla, H., Pérez de Rada, A., Pérez-Vidal, R.M., Petrache, C.M., Pietralla, N., Pietri, S., Pigliapoco, S., Plaza, J., Polettini, M., Porzio, C., Pucknell, V.F.E., Recchia, F., Reiter, P., Rezynkina, K., Rinta-Antila, S., Rocco, E., Rösch, H.A., Roy, P., Rubio, B., Rudigier, M., Ruotsalainen, P., Saha, S., Şahin, E., Scheidenberger, Ch., Seddon, D.A., Sexton, L., Sharma, A., Si, M., Simpson, J., Smith, A., Smith, R., Söderström, P.A., Sood, A., Soylu, A., Tanaka, Y.K., Valiente-Dobón, J.J., Vasileiou, P., Vasiljevic, J., Vesic, J., Villamarin, D., Weick, H., Wiebusch, M., Wiederhold, J., Wieland, O., Wollersheim, H.J., Woods, P.J., Yaneva, A., Zanon, I., Zhang, G., Zhao, J., Zidarova, R., Zimba, G., and Zyriliou, A.

Published
2022
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2. The GALILEO [formula omitted]-ray array at the Legnaro National Laboratories

Author

Goasduff, A., Mengoni, D., Recchia, F., Valiente-Dobón, J.J., Menegazzo, R., Benzoni, G., Barrientos, D., Bellato, M., Bez, N., Biasotto, M., Blasi, N., Boiano, C., Boso, A., Bottoni, S., Bracco, A., Brambilla, S., Brugnara, D., Camera, F., Capra, S., Capsoni, A., Cocconi, P., Coelli, S., Cortés, M.L., Crespi, F.C.L., de Angelis, G., Egea, F.J., Fanin, C., Fantinel, S., Gadea, A., Gamba, E.R., Gambalonga, A., Gesmundo, C., Gosta, G., Gottardo, A., Gozzelino, A., Gregor, E.T., Gulmini, M., Ha, J., Hadyńska-Klȩk, K., Illana, A., Isocrate, R., Jaworski, G., John, P.R., Lenzi, S.M., Leoni, S., Lunardi, S., Magalini, M., Marchini, N., Million, B., Modamio, V., Nannini, A., Napoli, D.R., Pasqualato, G., Pellumaj, J., Pérez-Vidal, R.M., Pigliapoco, S., Polettini, M., Porzio, C., Pullia, A., Ramina, L., Rampazzo, G., Rampazzo, M., Rebeschini, M., Rezynkina, K., Rocchini, M., Romanato, M., Rosso, D., Saltarelli, A., Scarcioffolo, M., Siciliano, M., Testov, D.A., Tomasella, D., Tomasi, F., Toniolo, N., Ur, C.A., Ventura, S., Veronese, F., Viscione, E., Volpe, V., Wieland, O., Zanon, I., Ziliani, S., Zhang, G., and Bazzacco, D.

Published
2021
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3. Low collectivity of the first 2⁺ states of ²¹²,²¹⁰Po

Author

Kocheva, D., Rainovski, G., Jolie, J., Pietralla, N., Blazhev, A., Astier, A., Altenkirch, R., Bast, M., Beckers, M., Ansari, S., Braunroth, Th., Cappellazzo, M., Cortés, M.L., Dewald, A., Diel, F., Djongolov, M., Fransen, C., Gladnishki, K., Goldkuhle, A., Hennig, A., Karayonchev, V., Keatings, J.M., Kluge, E., Kröll, Th., Litzinger, J., Moschner, K., Müller-Gatermann, C., Petkov, P., Rudigier, M., Scheck, M., Spagnoletti, P., Scholz, Ph., Schmidt, T., Spieker, M., Stahl, C., Stegmann, R., Stolz, A., Vogt, A., Stoyanova, M., Thöle, P., Warr, N., Werner, V., Witt, W., Wölk, D., Zamora, J.C., Zell, K.O., Van Isacker, P., Ponomarev, V. Yu., Kocheva, D., Rainovski, G., Jolie, J., Pietralla, N., Blazhev, A., Astier, A., Altenkirch, R., Bast, M., Beckers, M., Ansari, S., Braunroth, Th., Cappellazzo, M., Cortés, M.L., Dewald, A., Diel, F., Djongolov, M., Fransen, C., Gladnishki, K., Goldkuhle, A., Hennig, A., Karayonchev, V., Keatings, J.M., Kluge, E., Kröll, Th., Litzinger, J., Moschner, K., Müller-Gatermann, C., Petkov, P., Rudigier, M., Scheck, M., Spagnoletti, P., Scholz, Ph., Schmidt, T., Spieker, M., Stahl, C., Stegmann, R., Stolz, A., Vogt, A., Stoyanova, M., Thöle, P., Warr, N., Werner, V., Witt, W., Wölk, D., Zamora, J.C., Zell, K.O., Van Isacker, P., and Ponomarev, V. Yu.

Abstract

The lifetimes of the first 2⁺ excited states of ²¹²,²¹⁰Po were measured in two transfer reactions ²⁰⁸Pb(¹²C,⁸Be)²¹²Po and ²⁰⁸Pb(¹²C,¹⁰Be)²¹⁰Po by the Recoil Distance Doppler Shift (RDDS) method and by the Doppler Shift Attenuation method (DSAM), respectively. The derived absolute B(E2) values of 2.6(3) W.u. for ²¹²Po and 1.83(28) W.u. for ²¹⁰Po indicate low collectivity. It is shown that the properties of the yrast 2₁⁺, 4₁⁺, 6₁⁺ and 8₁⁺ states in both nuclei cannot be described consistently in the framework of nuclear shell models. It is also demonstrated in the case of ²¹⁰Po that Quasi-particle Phonon Model (QPM) calculations cannot overcome this problem thus indicating the existence of a peculiarity which is neglected in both theoretical approaches.

Published
2024

4. Isospin symmetry in the T = 1,A = 62 triplet

Author

Wimmer, K., primary, Ruotsalainen, P., additional, Lenzi, S.M., additional, Poves, A., additional, Hüyük, T., additional, Browne, F., additional, Doornenbal, P., additional, Koiwai, T., additional, Arici, T., additional, Auranen, K., additional, Bentley, M.A., additional, Cortés, M.L., additional, Delafosse, C., additional, Eronen, T., additional, Ge, Z., additional, Grahn, T., additional, Greenlees, P.T., additional, Illana, A., additional, Imai, N., additional, Joukainen, H., additional, Julin, R., additional, Jungclaus, A., additional, Jutila, H., additional, Kankainen, A., additional, Kitamura, N., additional, Longfellow, B., additional, Louko, J., additional, Lozeva, R., additional, Luoma, M., additional, Mauss, B., additional, Napoli, D.R., additional, Niikura, M., additional, Ojala, J., additional, Pakarinen, J., additional, Pereira-Lopez, X., additional, Rahkila, P., additional, Recchia, F., additional, Sandzelius, M., additional, Sarén, J., additional, Taniuchi, R., additional, Tann, H., additional, Uthayakumaar, S., additional, Uusitalo, J., additional, Vaquero, V., additional, Wadsworth, R., additional, Zimba, G., additional, and Yajzey, R., additional

Published
2023
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5. Collectivity at the prolate-oblate transition: The [formula omitted] lifetime of 190W

Author

Şahin, E., Werner, V., Mistry, A.K., Rudigier, M., Nomura, K., Jolie, J., Pietralla, N., Regan, P.H., Ağgez, G., Albers, H.M., Ahmed, U., Aktaş, Ö., Algora, A., Alhomaidhi, S., Appleton, C., Arıcı, T., Armstrong, M., Banerjee, A., Benito, J., Benzoni, G., Blazhev, A., Boutachkov, P., Bruce, A.M., Cederwall, B., Chishti, M.M.R., Cortés, M.L., Crespi, F., Das, B., Davinson, T., Dickel, T., Doncel, M., Ertoprak, A., Esmaylzadeh, A., Fraile, L.M., Gamba, E.R., Gerl, J., Górska, M., Ha, J., Haettner, E., Hall, O., Heggen, H., Hornung, C., Hubbard, N., Jazrawi, S., John, P.R., Jones, C.E., Karayonchev, V., Kazantseva, E., Kern, R., Knafla, L., Kojouharov, I., Koseoglou, P., Kosir, G., Kostyleva, D., Kurz, N., Kuzminchuk, N., Llanos-Expósito, M., Lozeva, R., Mengoni, D., Mertzimekis, T.J., Mikolajczuk, M., Morales, A.I., Mukha, I., Murias, J.R., Nara-Singh, B.S., Orrigo, S.E.A., Pellumaj, J., Pelonis, S., Pietri, S., Pigliapoco, S., Podolyák, Zs., Polettini, M., Rezynkina, K., Rösch, H.A., Schaffner, H., Scheidenberger, Ch., Sexton, L., Söderström, P.-A., Tanaka, Y.K., Valiente-Dobón, J.J., Vasileiou, P., Vasiljević, J., Vesic, J., Weick, H., Wiederhold, J., Yaneva, A., Zhang, G., Zhao, J., and Zyriliou, A.

Published
2024
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6. An alternative viewpoint on the nuclear structure towards 100Sn: Lifetime measurements in 105Sn

Author

Pasqualato, G., primary, Gottardo, A., additional, Mengoni, D., additional, Goasduff, A., additional, Valiente-Dobón, J.J., additional, Nowacki, F., additional, Péru, S., additional, Pillet, N., additional, de Angelis, G., additional, Bakes, S.D., additional, Bayram, T., additional, Bazzacco, D., additional, Benzoni, G., additional, Brugnara, D., additional, Cicerchia, M., additional, Colovic, P., additional, Cortés, M.L., additional, Gadea, A., additional, Galtarossa, F., additional, Górska, M., additional, Gozzelino, A., additional, Gregor, E., additional, Hubbard, N., additional, Illana, A., additional, Jurado, M., additional, Lenzi, S.M., additional, Mantovani, G., additional, Marchi, T., additional, Menegazzo, R., additional, Montaner-Pizá, A., additional, Napoli, D.R., additional, Recchia, F., additional, Siciliano, M., additional, Testov, D., additional, Szilner, S., additional, and Zanon, I., additional

Published
2023
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7. Spectroscopy of deeply bound orbitals in neutron-rich Ca isotopes

Author

Li, P.J., Lee, J., Doornenbal, P., Chen, S., Wang, S., Obertelli, A., Chazono, Y., Holt, J.D., Hu, B.S., Ogata, K., Utsuno, Y., Yoshida, K., Achouri, N.L., Baba, H., Browne, F., Calvet, D., Château, F., Chiga, N., Corsi, A., Cortés, M.L., Delbart, A., Gheller, J.-M., Giganon, A., Gillibert, A., Hilaire, C., Isobe, T., Kobayashi, T., Kubota, Y., Lapoux, V., Liu, H.N., Motobayashi, T., Murray, I., Otsu, H., Panin, V., Paul, N., Rodriguez, W., Sakurai, H., Sasano, M., Steppenbeck, D., Stuhl, L., Sun, Y.L., Togano, Y., Uesaka, T., Wimmer, K., Yoneda, K., Aktas, O., Aumann, T., Boretzky, K., Caesar, C., Chung, L.X., Flavigny, F., Franchoo, S., Gasparic, I., Gerst, R.-B., Gibelin, J., Hahn, K.I., Kahlbow, J., Kim, D., Koiwai, T., Kondo, Y., Körper, D., Koseoglou, P., Lehr, C., Linh, B.D., Lokotko, T., MacCormick, M., Miki, K., Moschner, K., Nakamura, T., Park, S.Y., Rossi, D., Sahin, E., Schindler, F., Simon, H., Söderström, P.-A., Sohler, D., Takeuchi, S., Toernqvist, H., Tscheuschner, J., Vaquero, V., Wagner, V., Werner, V., Xu, X., Yamada, H., Yan, D., Yang, Z., Yasuda, M., and Zanetti, L.

Published
2024
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9. Level structures of 56,58Ca cast doubt on a doubly magic 60Ca

Author

Chen, S., primary, Browne, F., additional, Doornenbal, P., additional, Lee, J., additional, Obertelli, A., additional, Tsunoda, Y., additional, Otsuka, T., additional, Chazono, Y., additional, Hagen, G., additional, Holt, J.D., additional, Jansen, G.R., additional, Ogata, K., additional, Shimizu, N., additional, Utsuno, Y., additional, Yoshida, K., additional, Achouri, N.L., additional, Baba, H., additional, Calvet, D., additional, Château, F., additional, Chiga, N., additional, Corsi, A., additional, Cortés, M.L., additional, Delbart, A., additional, Gheller, J.-M., additional, Giganon, A., additional, Gillibert, A., additional, Hilaire, C., additional, Isobe, T., additional, Kobayashi, T., additional, Kubota, Y., additional, Lapoux, V., additional, Liu, H.N., additional, Motobayashi, T., additional, Murray, I., additional, Otsu, H., additional, Panin, V., additional, Paul, N., additional, Rodriguez, W., additional, Sakurai, H., additional, Sasano, M., additional, Steppenbeck, D., additional, Stuhl, L., additional, Sun, Y.L., additional, Togano, Y., additional, Uesaka, T., additional, Wimmer, K., additional, Yoneda, K., additional, Aktas, O., additional, Aumann, T., additional, Chung, L.X., additional, Flavigny, F., additional, Franchoo, S., additional, Gasparic, I., additional, Gerst, R.-B., additional, Gibelin, J., additional, Hahn, K.I., additional, Kim, D., additional, Koiwai, T., additional, Kondo, Y., additional, Koseoglou, P., additional, Lehr, C., additional, Linh, B.D., additional, Lokotko, T., additional, MacCormick, M., additional, Moschner, K., additional, Nakamura, T., additional, Park, S.Y., additional, Rossi, D., additional, Sahin, E., additional, Söderström, P.-A., additional, Sohler, D., additional, Takeuchi, S., additional, Törnqvist, H., additional, Vaquero, V., additional, Wagner, V., additional, Wang, S., additional, Werner, V., additional, Xu, X., additional, Yamada, H., additional, Yan, D., additional, Yang, Z., additional, Yasuda, M., additional, and Zanetti, L., additional

Published
2023
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10. Level Structures of $^{56,58}$Ca Cast Doubt on a doubly magic $^{60}$Ca

Author

Chen, S, Browne, F, Doornenbal, P, Lee, J, Obertelli, A, Tsunoda, Y, Otsuka, T, Chazono, Y, Hagen, G, Holt, J.D, Jansen, G.R, Ogata, K, Shimizu, N, Utsuno, Y, Yoshida, K, Achouri, N.L, Baba, H, Calvet, D, Château, F, Chiga, N, Corsi, A, Cortés, M.L, Delbart, A, Gheller, J.-M, Giganon, A, Gillibert, A, Hilaire, C, Isobe, T, Kobayashi, T, Kubota, Y, Lapoux, V, Liu, H.N, Motobayashi, T, Murray, I, Otsu, H, Panin, V, Paul, N, Rodriguez, W, Sakurai, H, Sasano, M, Steppenbeck, D, Stuhl, L, Sun, Y.L, Togano, Y, Uesaka, T, Wimmer, K, Yoneda, K, Aktas, O, Aumann, T, Chung, L.X, Flavigny, F, Franchoo, S, Gasparic, I, Gerst, R.-B, Gibelin, J, Hahn, K.I, Kim, D, Koiwai, T, Kondo, Y, Koseoglou, P, Lehr, C, Linh, B.D, Lokotko, T, Maccormick, M, Moschner, K, Nakamura, T, Park, S.Y, Rossi, D, Sahin, E, Söderström, P.-A, Sohler, D, Takeuchi, S, Törnqvist, H, Vaquero, V, Wagner, V, Wang, S, Werner, V, Xu, X, Yamada, H, Yan, D, Yang, Z, Yasuda, M, Zanetti, L, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire Kastler Brossel (LKB [Collège de France]), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear Theory (nucl-th), [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Nuclear Theory, FOS: Physical sciences, Shell evolution, Nuclear Experiment (nucl-ex), Nuclear Experiment, Ray spectroscopy
Abstract

Gamma decays were observed in $^{56}$Ca and $^{58}$Ca following quasi-free one-proton knockout reactions from $^{57,59}$Sc beams at $\approx 200$ MeV/nucleon. For $^{56}$Ca, a $\gamma$ ray transition was measured to be 1456(12) keV, while for $^{58}$Ca an indication for a transition was observed at 1115(34) keV. Both transitions were tentatively assigned as the $2^+_1 \rightarrow 0^+_{gs}$ decays, and were compared to results from ab initio and conventional shell-model approaches. A shell-model calculation in a wide model space with a marginally modified effective nucleon-nucleon interaction depicts excellent agreement with experiment for $2^+_1$ level energies, two-neutron separation energies, and reaction cross sections, corroborating the formation of a new nuclear shell above the $N$ = 34 shell. Its constituents, the $0f_{5/2}$ and $0g_{9/2}$ orbitals, are almost degenerate. This degeneracy precludes the possibility for a doubly magic $^{60}$Ca and potentially drives the dripline of Ca isotopes to $^{70}$Ca or even beyond., Comment: 8 pages, 3 figures

Published
2023

11. Level structures of Ca cast doubt on a doubly magic Ca

Author

Chen, S., Browne, F., Doornenbal, P., Lee, J., Obertelli, A., Tsunoda, Y., Otsuka, T., Chazono, Y., Hagen, G., Holt, J.D., Jansen, G.R., Ogata, K., Shimizu, N., Utsuno, Y., Yoshida, K., Achouri, N.L., Baba, H., Calvet, D., Château, F., Chiga, N., Corsi, A., Cortés, M.L., Delbart, A., Gheller, J.M., Giganon, A., Gillibert, A., Hilaire, C., Isobe, T., Kobayashi, T., Kubota, Y., Lapoux, V., Liu, H.N., Motobayashi, T., Murray, I., Otsu, H., Panin, V., Paul, N., Rodriguez, W., Sakurai, H., Sasano, M., Steppenbeck, D., Stuhl, L., Sun, Y.L., Togano, Y., Uesaka, T., Wimmer, K., Yoneda, K., Aktas, O., Aumann, T., Chung, L.X., Flavigny, F., Franchoo, S., Gasparic, I., Gerst, R.B., Gibelin, J., Hahn, K.I., Kim, D., Koiwai, T., Kondo, Y., Koseoglou, P., Lehr, C., Linh, B.D., Lokotko, T., MacCormick, M., Moschner, K., Nakamura, T., Park, S.Y., Rossi, D., Sahin, E., Söderström, P.A., Sohler, D., Takeuchi, S., Törnqvist, H., Vaquero, V., Wagner, V., Wang, S., Werner, V., Xu, X., Yamada, H., Yan, D., Yang, Z., Yasuda, M., and Zanetti, L.

Abstract

Gamma decays were observed in $^{56}$Ca and $^{58}$Ca following quasi-free one-proton knockout reactions from $^{57,59}$Sc beams at ≈200 MeV/nucleon. For $^{56}$Ca, a γ ray transition was measured to be 1456(12) keV, while for $^{58}$Ca an indication for a transition was observed at 1115(34) keV. Both transitions were tentatively assigned as the 21+→0gs+ decays, and were compared to results from ab initio and conventional shell-model approaches. A shell-model calculation in a wide model space with a marginally modified effective nucleon-nucleon interaction depicts excellent agreement with experiment for 21+ level energies, two-neutron separation energies, and reaction cross sections, corroborating the formation of a new nuclear shell above the N = 34 shell. Its constituents, the 0f5/2 and 0g9/2 orbitals, are almost degenerate. This degeneracy precludes the possibility for a doubly magic $^{60}$Ca and potentially drives the dripline of Ca isotopes to $^{70}$Ca or even beyond.

Published
2023

12. High-spin states in Po above the -decaying (18 ) Isomer

Author

Zago, L., Gottardo, A., Valiente-Dobón, J.J., Benzoni, G., Gadea, A., Górska, M., Lunardi, S., Podolyák, Zs., Regan, P.H., Rudolph, D., Algora, A., de Angelis, G., Bazzacco, D., Benlliure, J., Boutachkov, P., Bracco, A., Bruce, A.M., Camera, F., Casarejos, E., Cortés, M.L., Crespi, F.C.L., Corsi, A., Domingo-Pardo, C., Doncel, M., Engert, T., Geissel, H., Gerl, J., Goasduff, A., Goel, N., Grebosz, J., Gregor, E., Habermann, T., Klupp, S., Kojouharov, I., Kurz, N., Lenzi, S.M., Leoni, S., Mandal, S., Menegazzo, R., Mengoni, D., Million, B., Morales, A.I., Napoli, D.R., Naqvi, F., Nociforo, C., Pfützner, M., Pietri, S., Prochazka, A., Recchia, F., Sahin, E., Schaffner, H., Sharma, A., Sitar, B., Siwal, D., Strmen, P., Szarka, I., Ur, C.A., Walker, P.M., Weick, H., Wieland, O., and Wollersheim, H.J.

Abstract

The nucleus $^{212}$Po has been produced through the fragmentation of a $^{238}$U primary beam at 1 GeV/nucleon at GSI, separated with the FRagment Separator, FRS, and studied via isomer γ-decay spectroscopy with the RISING setup. Two delayed previously unknown γ rays have been observed. One has been attributed to the E3 decay of a 21$^{−}$ isomeric state feeding the α-emitting 45-s (18$^{+}$) high-spin isomer. The other γ-ray line has been assigned to the decay of a higher-lying 23$^{+}$ metastable state. These are the first observations of high-spin states above the $^{212}$Po (18$^{+}$) isomer, by virtue of the selectivity obtained via ion-by-ion identification of $^{238}$U fragmentation products. Comparison with shell-model calculations points to shortfalls in the nuclear interactions involving high-j proton and neutron orbitals, to which the region around Z∼100 is sensitive.

Published
2022

13. High-spin states in 212Po above the α-decaying (18+) isomer

Author

Zago, L., primary, Gottardo, A., additional, Valiente-Dobón, J.J., additional, Benzoni, G., additional, Gadea, A., additional, Górska, M., additional, Lunardi, S., additional, Podolyák, Zs., additional, Regan, P.H., additional, Rudolph, D., additional, Algora, A., additional, de Angelis, G., additional, Bazzacco, D., additional, Benlliure, J., additional, Boutachkov, P., additional, Bracco, A., additional, Bruce, A.M., additional, Camera, F., additional, Casarejos, E., additional, Cortés, M.L., additional, Crespi, F.C.L., additional, Corsi, A., additional, Domingo-Pardo, C., additional, Doncel, M., additional, Engert, T., additional, Geissel, H., additional, Gerl, J., additional, Goasduff, A., additional, Goel, N., additional, Grebosz, J., additional, Gregor, E., additional, Habermann, T., additional, Klupp, S., additional, Kojouharov, I., additional, Kurz, N., additional, Lenzi, S.M., additional, Leoni, S., additional, Mandal, S., additional, Menegazzo, R., additional, Mengoni, D., additional, Million, B., additional, Morales, A.I., additional, Napoli, D.R., additional, Naqvi, F., additional, Nociforo, C., additional, Pfützner, M., additional, Pietri, S., additional, Prochazka, A., additional, Recchia, F., additional, Sahin, E., additional, Schaffner, H., additional, Sharma, A., additional, Sitar, B., additional, Siwal, D., additional, Strmen, P., additional, Szarka, I., additional, Ur, C.A., additional, Walker, P.M., additional, Weick, H., additional, Wieland, O., additional, and Wollersheim, H.-J., additional

Published
2022
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14. A first glimpse at the shell structure beyond 54Ca: Spectroscopy of 55K, 55Ca, and 57Ca

Author

Koiwai, T., Wimmer, K., Doornenbal, P., Obertelli, A., Barbieri, C., Duguet, T., Holt, J.D., Miyagi, T., Navrátil, P., Ogata, K., Shimizu, N., Somà, V., Utsuno, Y., Yoshida, K., Achouri, N.L., Baba, H., Browne, F., Calvet, D., Château, F., Chen, S., Chiga, N., Corsi, A., Cortés, M.L., Delbart, A., Gheller, J.-M., Giganon, A., Gillibert, A., Hilaire, C., Isobe, T., Kobayashi, T., Kubota, Y., Lapoux, V., Liu, H.N., Motobayashi, T., Murray, I., Otsu, H., Panin, V., Paul, N., Rodriguez, W., Sakurai, H., Sasano, M., Steppenbeck, D., Stuhl, L., Sun, Y.L., Togano, Y., Uesaka, T., Yoneda, K., Aktas, O., Aumann, T., Chung, L.X., Flavigny, F., Franchoo, S., Gasparic, I., Gerst, R.-B., Gibelin, J., Hahn, K.I., Kim, D., Kondo, Y., Koseoglou, P., Lee, J., Lehr, C., Linh, B.D., Lokotko, T., MacCormick, M., Moschner, K., Nakamura, T., Park, S.Y., Rossi, D., Sahin, E., Söderström, P.-A., Sohler, D., Takeuchi, S., Toernqvist, H., Vaquero, V., Wagner, V., Wang, S., Werner, V., Xu, X., Yamada, H., Yan, D., Yang, Z., Yasuda, M., and Zanetti, L.

Published
2022
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15. The DESPEC setup for GSI and FAIR

Author

Mistry, A.K. Albers, H.M. Arıcı, T. Banerjee, A. Benzoni, G. Cederwall, B. Gerl, J. Górska, M. Hall, O. Hubbard, N. Kojouharov, I. Jolie, J. Martinez, T. Podolyák, Z. Regan, P.H. Tain, J.L. Tarifeno-Saldivia, A. Schaffner, H. Werner, V. Ağgez, G. Agramunt, J. Ahmed, U. Aktas, O. Alcayne, V. Algora, A. Alhomaidhi, S. Amjad, F. Appleton, C. Armstrong, M. Balogh, M. Banerjee, K. Bednarczyk, P. Benito, J. Bhattacharya, C. Black, P. Blazhev, A. Bottoni, S. Boutachkov, P. Bracco, A. Bruce, A.M. Brunet, M. Bruno, C.G. Burrows, I. Calvino, F. Canavan, R.L. Cano-Ott, D. Chishti, M.M.R. Coleman-Smith, P. Cortés, M.L. Cortes, G. Crespi, F. Das, B. Davinson, T. De Blas, A. Dickel, T. Doncel, M. Ertoprak, A. Esmaylzadeh, A. Fornal, B. Fraile, L.M. Galtarossa, F. Gottardo, A. Guadilla, V. Ha, J. Haettner, E. Häfner, G. Heggen, H. Herrmann, P. Hornung, C. Jazrawi, S. John, P.R. Jokinen, A. Jones, C.E. Kahl, D. Karayonchev, V. Kazantseva, E. Kern, R. Knafla, L. Knöbel, R. Koseoglou, P. Kosir, G. Kostyleva, D. Kurz, N. Kuzminchuk, N. Labiche, M. Lawson, J. Lazarus, I. Lenzi, S.M. Leoni, S. Llanos-Expósito, M. Lozeva, R. Maj, A. Meena, J.K. Mendoza, E. Menegazzo, R. Mengoni, D. Mertzimekis, T.J. Mikolajczuk, M. Million, B. Mont-Geli, N. Morales, A.I. Morral, P. Mukha, I. Murias, J.R. Nacher, E. Napiralla, P. Napoli, D.R. Nara-Singh, B.S. O'Donnell, D. Orrigo, S.E.A. Page, R.D. Palit, R. Pallas, M. Pellumaj, J. Pelonis, S. Pentilla, H. Pérez de Rada, A. Pérez-Vidal, R.M. Petrache, C.M. Pietralla, N. Pietri, S. Pigliapoco, S. Plaza, J. Polettini, M. Porzio, C. Pucknell, V.F.E. Recchia, F. Reiter, P. Rezynkina, K. Rinta-Antila, S. Rocco, E. Rösch, H.A. Roy, P. Rubio, B. Rudigier, M. Ruotsalainen, P. Saha, S. Şahin, E. Scheidenberger, C. Seddon, D.A. Sexton, L. Sharma, A. Si, M. Simpson, J. Smith, A. Smith, R. Söderström, P.A. Sood, A. Soylu, A. Tanaka, Y.K. Valiente-Dobón, J.J. Vasileiou, P. Vasiljevic, J. Vesic, J. Villamarin, D. Weick, H. Wiebusch, M. Wiederhold, J. Wieland, O. Wollersheim, H.J. Woods, P.J. Yaneva, A. Zanon, I. Zhang, G. Zhao, J. Zidarova, R. Zimba, G. Zyriliou, A.

Abstract

The DEcay SPECtroscopy (DESPEC) setup for nuclear structure investigations was developed and commissioned at GSI, Germany in preparation for a full campaign of experiments at the FRS and Super-FRS. In this paper, we report on the first employment of the setup in the hybrid configuration with the AIDA implanter coupled to the FATIMA LaBr3(Ce) fast-timing array, and high-purity germanium detectors. Initial results are shown from the first experiments carried out with the setup. An overview of the setup and function is discussed, including technical advancements along the path. © 2022 Elsevier B.V.

Published
2022

16. Extended p3/2 Neutron Orbital and the N=32 Shell Closure in Ca 52

Author

Enciu, M., Liu, H.N., Obertelli, A., Doornenbal, P., Nowacki, F., Ogata, K., Poves, A., Yoshida, K., Achouri, N.L., Baba, H., Browne, F., Calvet, D., Château, F., Chen, S., Chiga, N., Corsi, A., Cortés, M.L., Delbart, A., Gheller, J.-M., Giganon, A., Gillibert, A., Hilaire, C., Isobe, T., Kobayashi, T., Kubota, Y., Lapoux, V., Motobayashi, T., Murray, I., Otsu, H., Panin, V., Paul, N., Rodriguez, W., Sakurai, H., Sasano, M., Steppenbeck, D., Stuhl, L., Sun, Y.L., Togano, Y., Uesaka, T., Wimmer, K., Yoneda, K., Aktas, O., Aumann, T., Chung, L.X., Flavigny, F., Franchoo, S., Gasparic, I., Gerst, R.-B., Gibelin, J., Hahn, K.I., Kim, D., Kondo, Y., Koseoglou, P., Lee, J., Lehr, C., Li, P.J., Linh, B.D., Lokotko, T., Maccormick, M., Moschner, K., Nakamura, T., Park, S.Y., Rossi, D., Sahin, Eda, Söderström, P.-A., Sohler, D., Takeuchi, S., Toernqvist, H., Vaquero, V., Wagner, V., Wang, S., Werner, V., Xu, X., Yamada, H., Yan, D., Yang, Z., Yasuda, M., and Zanetti, L.

Abstract

The one-neutron knockout from 52Ca in inverse kinematics onto a proton target was performed at ∼230 MeV/nucleon combined with prompt γ spectroscopy. Exclusive quasifree scattering cross sections to bound states in 51Ca and the momentum distributions corresponding to the removal of 1f7/2 and 2p3/2 neutrons were measured. The cross sections, interpreted within the distorted-wave impulse approximation reaction framework, are consistent with a shell closure at the neutron number N=32, found as strong as at N=28 and N=34 in Ca isotopes from the same observables. The analysis of the momentum distributions leads to a difference of the root-mean-square radii of the neutron 1f7/2 and 2p3/2 orbitals of 0.61(23) fm, in agreement with the modified-shell-model prediction of 0.7 fm suggesting that the large root-mean-square radius of the 2p3/2 orbital in neutron-rich Ca isotopes is responsible for the unexpected linear increase of the charge radius with the neutron number.

Published
2022

17. 'Southwestern' boundary of the <math><mrow><mi>N</mi><mo>=</mo><mn>40</mn></mrow></math> island of inversion: First study of low-lying bound excited states in <math><mmultiscripts><mi mathvariant='normal'>V</mi><mprescripts/><none/><mn>59</mn></mmultiscripts></math> and <math><mmultiscripts><mi mathvariant='normal'>V</mi><mprescripts/><none/><mn>61</mn></mmultiscripts></math>

Author

Elekes, Z., Juhász, M.M., Sohler, D., Sieja, K., Yoshida, K., Ogata, K., Doornenbal, P., Obertelli, A., Achouri, N.L., Baba, H., Browne, F., Calvet, D., Château, F., Chen, S., Chiga, N., Corsi, A., Cortés, M.L., Delbart, A., Gheller, J.-M., Giganon, A., Gillibert, A., Hilaire, C., Isobe, T., Kobayashi, T., Kubota, Y., Lapoux, V., Liu, H.N., Motobayashi, T., Murray, I., Otsu, H., Panin, V., Paul, N., Rodriguez, W., Sakurai, H., Sasano, M., Steppenbeck, D., Stuhl, L., Sun, Y.L., Togano, Y., Uesaka, T., Wimmer, K., Yoneda, K., Aktas, O., Aumann, T., Chung, L.X., Dombrádi, Zs., Flavigny, F., Franchoo, S., Gašparić, I., Gerst, R.-B., Gibelin, J., Hahn, K.I., Kim, D., Koiwai, T., Kondo, Y., Koseoglou, P., Lee, J., Lehr, C., Linh, B.D., Lokotko, T., Maccormick, M., Moschner, K., Nakamura, T., Park, S.Y., Rossi, D., Sahin, E., Söderström, P.-A., Takeuchi, S., Törnqvist, H., Vaquero, V., Wagner, V., Wang, S., Werner, V., Xu, X., Yamada, H., Yan, D., Yang, Z., Yasuda, M., Zanetti, L., Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire Kastler Brossel (LKB [Collège de France]), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Sunflower

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

International audience; The low-lying level structure of V59 and V61 was investigated for the first time. The neutron knockout reaction and inelastic proton scattering were applied for V61 while the neutron knock-out reaction provided the data for V59. Four and five new transitions were determined for V59 and V61, respectively. Based on the comparison to our shell-model calculations using the Lenzi-Nowacki-Poves-Sieja (LNPS) interaction, three of the observed γ rays for each isotope could be placed in the level scheme and assigned to the decay of the first 11/2− and 9/2− levels. The (p,p′) excitation cross sections for V61 were analyzed by the coupled-channels formalism assuming quadrupole plus hexadecapole deformations. Due to the role of the hexadecapole deformation, V61 could not be unambiguously placed on the island of inversion.

Published
2022

18. $\gamma$-ray spectroscopy of low-lying yrast and non-yrast states in neutron-rich $^{94,95,96}\mathrm{Kr}$

Author

Gerst, R.-B., Blazhev, A., Moschner, K., Doornenbal, P., Obertelli, A., Nomura, K., Ebran, J.-P., Hilaire, S., Libert, J., Authelet, G., Baba, H., Calvet, D., Château, F., Chen, S., Corsi, A., Delbart, A., Gheller, J.-M., Giganon, A., Gillibert, A., Lapoux, V., Motobayashi, T., Niikura, M., Paul, N., Roussé, J.-Y., Sakurai, H., Santamaria, C., Steppenbeck, D., Taniuchi, R., Uesaka, T., Ando, T., Arici, T., Browne, F., Bruce, A.M., Caroll, R., Chung, L.X., Cortés, M.L., Dewald, M., Ding, B., Flavigny, F., Franchoo, S., Górska, M., Gottardo, A., Jolie, J., Jungclaus, A., Lee, J., Lettmann, M., Linh, B.D., Liu, J., Liu, Z., Lizarazo, C., Momiyama, S., Nagamine, S., Nakatsuka, N., Nita, C.R., Nobs, C., Olivier, L., Orlandi, R., Patel, Z., Podolyák, Zs., Rudigier, M., Saito, T., Shand, C., Söderström, P.-A., Stefan, I., Vaquero, V., Werner, V., Wimmer, K., Xu, Z., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Kastler Brossel (LKB [Collège de France]), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), 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
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

International audience; We report on γ-ray spectroscopy of low-lying excited states in the neutron-rich Kr94,95,96 isotopes measured as part of the “Shell Evolution And Search for Two-plus energies At RIBF” (SEASTAR) campaign at the RIKEN Radioactive Isotope Beam Factory. Excited yrast and non-yrast states were observed, and half-lives extracted via geant4 simulations. In Kr94,96 candidates for the 31− state were identified. For Kr95, the prompt SEASTAR data were combined with delayed spectroscopic data measured with the EURICA array to observe transitions on top of the known (7/2)+ isomer at a level energy of 195.5(3) keV. The comparison of the new experimental results with five-dimensional collective Hamiltonian (5DCH) and mapped interacting boson model (IBM) calculations, both using the Gogny D1M interaction, could suggest oblate-prolate shape coexistence already in Kr96.

Published
2022

19. Mirror energy differences above the 0f7/2 shell: First γ-ray spectroscopy of the Tz = −2 nucleus 56Zn

Author

Fernández, A., Jungclaus, A., Doornenbal, P., Bentley, M.A., Lenzi, S.M., Rudolph, D., Browne, F., Cortés, M.L., Koiwai, T., Taniuchi, R., Vaquero, V., Wimmer, K., Arici, T., Imai, N., Kitamura, N., Longfellow, B., Lozeva, R., Mauss, B., Napoli, D.R., Niikura, M., Pereira-Lopez, X., Pigliapoco, S., Poves, A., Recchia, F., Ruotsalainen, P., Sakurai, H., Uthayakumaar, S., Wadsworth, R., and Yajzey, R.

Published
2021
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20. Mirror energy differences above the 0 shell: First -ray Spectroscopy of the = −2 Nucleus Zn

Author

Fernández, A., Jungclaus, A., Doornenbal, P., Bentley, M.A., Lenzi, S.M., Rudolph, D., Browne, F., Cortés, M.L., Koiwai, T., Taniuchi, R., Vaquero, V., Wimmer, K., Arici, T., Imai, N., Kitamura, N., Longfellow, B., Lozeva, R., Mauss, B., Napoli, D.R., Niikura, M., Pereira-Lopez, X., Pigliapoco, S., Poves, A., Recchia, F., Ruotsalainen, P., Sakurai, H., Uthayakumaar, S., Wadsworth, R., and Yajzey, R.

Abstract

Excited states in $^{56}$Zn were populated following one-neutron removal from a $^{57}$Zn beam impinging on a Be target at intermediate energies in an experiment conducted at the Radioactive Isotope Beam Factory at RIKEN. Three γ rays were observed and tentatively assigned to the 6+→4+→2+→0+ yrast sequence. This turns $^{56}$Zn into the heaviest Tz=−2 nucleus in which excited states are known. The excitation-energy differences between these levels and the isobaric analogue states in the Tz=+2 mirror partner, $^{56}$Fe, are compared with large-scale shell-model calculations considering the full pf valence space and various isospin-breaking contributions. This comparison, together with an analysis of the mirror energy differences in the A=58, Tz=±1 pair $^{58}$Zn and $^{58}$Ni, provides valuable information with respect to the size of the monopole radial and the isovector multipole isospin-breaking terms in the region above doubly-magic $^{56}$Ni.

Published
2021

21. The GALILEO γ-ray array at the Legnaro National Laboratories

Author

Goasduff, A., primary, Mengoni, D., additional, Recchia, F., additional, Valiente-Dobón, J.J., additional, Menegazzo, R., additional, Benzoni, G., additional, Barrientos, D., additional, Bellato, M., additional, Bez, N., additional, Biasotto, M., additional, Blasi, N., additional, Boiano, C., additional, Boso, A., additional, Bottoni, S., additional, Bracco, A., additional, Brambilla, S., additional, Brugnara, D., additional, Camera, F., additional, Capra, S., additional, Capsoni, A., additional, Cocconi, P., additional, Coelli, S., additional, Cortés, M.L., additional, Crespi, F.C.L., additional, de Angelis, G., additional, Egea, F.J., additional, Fanin, C., additional, Fantinel, S., additional, Gadea, A., additional, Gamba, E.R., additional, Gambalonga, A., additional, Gesmundo, C., additional, Gosta, G., additional, Gottardo, A., additional, Gozzelino, A., additional, Gregor, E.T., additional, Gulmini, M., additional, Ha, J., additional, Hadyńska-Klȩk, K., additional, Illana, A., additional, Isocrate, R., additional, Jaworski, G., additional, John, P.R., additional, Lenzi, S.M., additional, Leoni, S., additional, Lunardi, S., additional, Magalini, M., additional, Marchini, N., additional, Million, B., additional, Modamio, V., additional, Nannini, A., additional, Napoli, D.R., additional, Pasqualato, G., additional, Pellumaj, J., additional, Pérez-Vidal, R.M., additional, Pigliapoco, S., additional, Polettini, M., additional, Porzio, C., additional, Pullia, A., additional, Ramina, L., additional, Rampazzo, G., additional, Rampazzo, M., additional, Rebeschini, M., additional, Rezynkina, K., additional, Rocchini, M., additional, Romanato, M., additional, Rosso, D., additional, Saltarelli, A., additional, Scarcioffolo, M., additional, Siciliano, M., additional, Testov, D.A., additional, Tomasella, D., additional, Tomasi, F., additional, Toniolo, N., additional, Ur, C.A., additional, Ventura, S., additional, Veronese, F., additional, Viscione, E., additional, Volpe, V., additional, Wieland, O., additional, Zanon, I., additional, Ziliani, S., additional, Zhang, G., additional, and Bazzacco, D., additional

Published
2021
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