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1دورية أكاديمية
المؤلفون: Jungclaus, A., Taprogge, J., Simpson, G. S., Gey, G., Nishimura, S., Doornenbal, P., Lorusso, G., Söderström, P.-A., Sumikama, T., Xu, Z., Baba, H., Browne, F., Fukuda, N., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y.-K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Suzuki, H., Takeda, H., Vajta, Z., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Bönig, S., Daugas, J.-M., Drouet, F., Gernhäuser, R., Ilieva, S., Kröll, T., Montaner-Pizá, A., Moschner, K., Mücher, D., Nishibata, H., Orlandi, R., Steiger, K., Wendt, A.
الوصف: The first EURICA campaign with high intensity Uranium beams took place at RIKEN in November/December 2012. Within this campaign experiment NP1112-RIBF85 was performed dedicated to the study of the isomeric and beta decays of neutron-rich Cd, In, Sn and Sb isotopes towards and beyond the N=82 neutron shell closure. In this contribution we will first provide information about the status of the analysis of the extensive data set obtained in this experiment and close with a short outlook.
وصف الملف: text
العلاقة: https://tuprints.ulb.tu-darmstadt.de/20833/1/jpconf14_533_012045.pdfTest; Jungclaus, A.; Taprogge, J.; Simpson, G. S.; Gey, G.; Nishimura, S.; Doornenbal, P.; Lorusso, G.; Söderström, P.-A.; Sumikama, T.; Xu, Z.; Baba, H.; Browne, F.; Fukuda, N.; Inabe, N.; Isobe, T.; Jung, H. S.; Kameda, D.; Kim, G. D.; Kim, Y.-K.; Kojouharov, I.; Kubo, T.; Kurz, N.; Kwon, Y. K.; Li, Z.; Sakurai, H.; Schaffner, H.; Suzuki, H.; Takeda, H.; Vajta, Z.; Watanabe, H.; Wu, J.; Yagi, A.; Yoshinaga, K.; Bönig, S.; Daugas, J.-M.; Drouet, F.; Gernhäuser, R.; Ilieva, S.; Kröll, T.; Montaner-Pizá, A.; Moschner, K.; Mücher, D.; Nishibata, H.; Orlandi, R.; Steiger, K.; Wendt, A. (2024)Beta decay and isomer spectroscopy in the ¹³²Sn region: New results from EURICA. In: Journal of Physics: Conference Series, 2014, 533 (1) doi:10.26083/tuprints-00020833 Article, Secondary publication, Publisher's Version
الإتاحة: https://doi.org/10.26083/tuprints-00020833Test
http://tuprints.ulb.tu-darmstadt.de/20833Test/
https://tuprints.ulb.tu-darmstadt.de/20833/1/jpconf14_533_012045.pdfTest -
2تقرير
المؤلفون: Wu, J., Nishimura, S., Möller, P., Mumpower, M. R., Lozeva, R., Moon, C. B., Odahara, A., Baba, H., Browne, F., Daido, R., Doornenbal, P., Fang, Y. F., Haroon, M., Isobe, T., Jung, H. S., Lorusso, G., Moon, B., Patel, Z., Rice, S., Sakurai, H., Shimizu, Y., Sinclair, L., Söderström, P. -A., Sumikama, T., Watanabe, H., Xu, Z. Y., Yagi, A., Yokoyama, R., Ahn, D. S., Garrote, F. L. Bello, Daugas, J. M., Didierjean, F., Fukuda, N., Inabe, N., Ishigaki, T., Kameda, D., Kojouharov, I., Komatsubara, T., Kubo, T., Kurz, N., Kwon, K. Y., Morimoto, S., Murai, D., Nishibata, H., Schaffner, H., Sprouse, T. M., Suzuki, H., Takeda, H., Tanaka, M., Tshoo, K., Wakabayashi, Y.
مصطلحات موضوعية: Nuclear Experiment
الوصف: The $\beta$-decay half-lives of 55 neutron-rich nuclei $^{134-139}$Sn, $^{134-142}$Sb, $^{137-144}$Te, $^{140-146}$I, $^{142-148}$Xe, $^{145-151}$Cs, $^{148-153}$Ba, $^{151-155}$La were measured at the Radioactive Isotope Beam Factory (RIBF) employing the projectile fission fragments of $^{238}$U. The nuclear level structure, which relates to deformation, has a large effect on the half-lives. The impact of newly-measured half-lives on modeling the astrophysical origin of the heavy elements is studied in the context of $r$ process nucleosynthesis. For a wide variety of astrophysical conditions, including those in which fission recycling occurs, the half-lives have an important local impact on the second ($A$ $\approx$ 130) peak.
الوصول الحر: http://arxiv.org/abs/2004.00119Test
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3تقرير
المؤلفون: Lica, R., Rotaru, F., Borge, M. J. G., Grevy, S., Negoita, F., Poves, A., Sorlin, O., Andreyev, A. N., Borcea, R., Costache, C., De Witte, H., Fraile, L. M., Greenlees, P. T., Huyse, M., Ionescu, A., Kisyov, S., Konki, J., Lazarus, I., Madurga, M., Marginean, N., Marginean, R., Mihai, C., Mihai, R. E., Negret, A., Nowacki, F., Page, R. D., Pakarinen, J., Pucknell, V., Rahkila, P., Rapisarda, E., Serban, A., Sotty, C. O., Stan, L., Stanoiu, M., Tengblad, O., Turturica, A., Van Duppen, P., Warr, N., Dessagne, Ph., Stora, T., Borcea, C., Calinescu, S., Daugas, J. M., Filipescu, D., Kuti, I., Franchoo, S., Gheorghe, I., Morfouace, P., Morel, P., Mrazek, J., Pietreanu, D., Sohler, D., Stefan, I., Suvaila, R., Toma, S., Ur, C. A.
مصطلحات موضوعية: Nuclear Experiment
الوصف: The structure of $^{34}$Si was studied through $\gamma$ spectroscopy separately in the $\beta^-$ decays of $^{34}$Mg and $^{34}$Al at the ISOLDE facility of CERN. Different configurations in $^{34}$Si were populated independently from the two recently identified $\beta$-decaying states in $^{34}$Al having spin-parity assignments $J^\pi = 4^-$ dominated by the normal configuration $\pi (d_{5/2})^{-1} \otimes \nu (f_{7/2})$ and $J^\pi = 1^+$ by the intruder configuration $\pi (d_{5/2})^{-1} \otimes \nu (d_{3/2})^{-1}(f_{7/2})^{2}$. The paper reports on spectroscopic properties of $^{34}$Si such as an extended level scheme, spin and parity assignments based on log($ft$) values and $\gamma$-ray branching ratios, absolute $\beta$ feeding intensities and neutron emission probabilities. A total of 11 newly identified levels and 26 transitions were added to the previously known level scheme of $^{34}$Si. Large scale shell-model calculations using the {\sc sdpf-u-mix} interaction, able to treat higher order intruder configurations, are compared with the new results and conclusions are drawn concerning the predictive power of {\sc sdpf-u-mix}, the $N=20$ shell gap, the level of mixing between normal and intruder configurations for the 0$_1^+$, 0$_2^+$ and 2$_1^+$ states and the absence of triaxial deformation in $^{34}$Si.
الوصول الحر: http://arxiv.org/abs/1908.11626Test
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4تقرير
المؤلفون: Ichikawa, Y., Nishibata, H., Tsunoda, Y., Takamine, A., Imamura, K., Fujita, T., Sato, T., Momiyama, S., Shimizu, Y., Ahn, D. S., Asahi, K., Baba, H., Balabanski, D. L., Boulay, F., Daugas, J. M., Egami, T., Fukuda, N., Funayama, C., Furukawa, T., Georgiev, G., Inabe, N., Ishibashi, Y., Kawaguchi, T., Kawamura, T., Kobayashi, Y., Kojima, S., Kusoglu, A., Mukul, I., Niikura, M., NIshizaka, T., Odahara, A., Ohtomo, Y., Otsuka, T., ralet, D., Simpson, G. S., Sumikama, T., Suzuki, H., Takeda, H., Tao, L. C., Togano, Y., Tominaga, D., Ueno, H., Yamazaki, H., Yang, X. F.
المصدر: Nature Physics (published online on 21 January 2019)
مصطلحات موضوعية: Nuclear Experiment
الوصف: Exotic nuclei are characterized by a number of neutrons (or protons) in excess relative to stable nuclei. Their shell structure, which represents single-particle motion in a nucleus, may vary due to nuclear force and excess neutrons, in a phenomenon called shell evolution. This effect could be counterbalanced by collective modes causing deformations of the nuclear surface. Here, we study the interplay between shell evolution and shape deformation by focusing on the magnetic moment of an isomeric state of the neutron-rich nucleus 75Cu. We measure the magnetic moment using highly spin-controlled rare-isotope beams and achieving large spin alignment via a two-step reaction scheme that incorporates an angular-momentum-selecting nucleon removal. By combining our experiments with numerical simulations of many-fermion correlations, we find that the low-lying states in 75Cu are, to a large extent, of single-particle nature on top of a correlated 74Ni core. We elucidate the crucial role of shell evolution even in the presence of the collective mode, and within the same framework, we consider whether and how the double magicity of the 78Ni nucleus is restored, which is also of keen interest from the perspective of nucleosynthesis in explosive stellar processes.
Comment: 10 pages, 4 figuresالوصول الحر: http://arxiv.org/abs/1810.07893Test
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5تقرير
المؤلفون: Heylen, H., De Rydt, M., Neyens, G., Bissell, M. L., Caceres, L., Chevrier, R., Daugas, J. M., Ichikawa, Y., Ishibashi, Y., Kamalou, O., Mertzimekis, T. J., Morel, P., Papuga, J., Poves, A., Rajabali, M. M., Stodel, C., Thomas, J. C., Ueno, H., Utsuno, Y., Yoshida, N., Yoshimi, A.
مصطلحات موضوعية: Nuclear Experiment, Nuclear Theory
الوصف: The electric quadrupole moment of the 33Al20 ground state, located at the border of the island of inversion, was obtained using continuous-beam beta-detected nuclear quadrupole resonance (beta-NQR). From the measured quadrupole coupling constant Q = 2.31(4) MHz in an alpha-Al2O3 crystal, a precise value for the electric quadrupole moment is extracted: Qs= 141(3) mb. A comparison with large-scale shell model calculations shows that 33Al has at least 50% intruder configurations in the ground state wave function, favoring the excitation of two neutrons across the N = 20 shell gap. 33Al therefore clearly marks the gradual transition north of the deformed Na and Mg nuclei towards the normal Z>14 isotopes.
Comment: 6 pages, 4 figures. Accepted for publication in Physical Review Cالوصول الحر: http://arxiv.org/abs/1608.04360Test
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6تقرير
المؤلفون: De Grancey, F., Mercenne, A., Santos, F. de Oliveira, Davinson, T., Sorlin, O., Angélique, J. C., Assié, M., Berthoumieux, E., Borcea, R., Buta, A., Celikovic, I., Chudoba, V., Daugas, J. M., Dumitru, G., Fadil, M., Grévy, S., Kiener, J., Lefebvre-Schuhl, A., Michel, N., Mrazek, J., Negoita, F., Okolowicz, J., Pantelica, D., Pellegriti, M. G., Perrot, L., Ploszajczak, M., Randisi, G., Ray, I., Roig, O., Rotaru, F., Laurent, M. G. Saint, Smirnova, N., Stanoiu, M., Stefan, I., Stodel, C., Subotic, K., Tatischeff, V., Thomas, J. C., Ujic, P., Wolski, R.
مصطلحات موضوعية: Nuclear Experiment
الوصف: Intense and purified radioactive beam of post-accelerated $^{14}$O was used to study the low-lying states in the unbound $^{15}$F nucleus. Exploiting resonant elastic scattering in inverse kinematics with a thick target, the second excited state, a resonance at E$\_R$=4.757(6)(10)~MeV with a width of $\Gamma$=36(5)(14)~keV was measured for the first time with high precision. The structure of this narrow above-barrier state in a nucleus located two neutrons beyond the proton drip line was investigated using the Gamow Shell Model in the coupled channel representation with a $^{12}$C core and three valence protons. It is found that it is an almost pure wave function of two quasi-bound protons in the $2s\_{1/2}$ shell.
Comment: 8 pages, 2 figures, 1 table, Submitted to Phys. Lett. Bالوصول الحر: http://arxiv.org/abs/1603.00436Test
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7تقرير
المؤلفون: Moon, C. -B., Lee, P., Lee, C. S., Odahara, A., Lozeva, R., Yagi, A., Browne, F., Nishimura, S., Doornenbal, P., Lorusso, G., Söderström, P. -A., Sumikama, T., Watanabe, H., Isobe, T., Baba, H., Sakurai, H., Daido, R., Fang, Y., Nishibata, H., Patel, Z., Rice, S., Sinclair, L., Wu, J., Xu, Z. Y., Yokoyama, R., Kubo, T., Inabe, N., Suzuki, H., Fukuda, N., Kameda, D., Takeda, H., Ahn, D. S., Murai, D., Garrote, F. L. Bello, Daugas, J. M., Didierjean, F., Ideguchi, E., Ishigaki, T., Jung, H. S., Komatsubara, T., Kwon, Y. K., Morimoto, S., Niikura, M., Nishizuka, I., Tshoo, K.
المصدر: Phys. Rev. C 95, 044322 (2017)
مصطلحات موضوعية: Nuclear Experiment
الوصف: We study for the first time the internal structure of 140Te through the beta-delayed gamma-ray spectroscopy of 140Sb. The very neutron-rich 140Sb, Z = 51 and N = 89, ions were produced by the in-flight fission of 238U beam on a 9Be target at 345 MeV per nucleon at the Radioactive Ion Beam Factory, RIKEN. The half-life and spin-parity of 140Sb are reported as 124(30) ms and (4-), respectively. In addition to the excited states of 140Te produced by the beta-decay branch, the beta-delayed one-neutron and two-neutron emission branches were also established. By identifying the first 2+ and 4+ excited states of 140Te, we found that Te isotopes persist their vibrator character with E(4+)/E(2+) = 2. We discuss the distinctive features manifest in this region, such as valence neutron symmetry and asymmetry, revealed in pairs of isotopes with the same neutron holes and particles with respect to N = 82.
Comment: 9 pages, 6 figures, EURICA campaignالوصول الحر: http://arxiv.org/abs/1512.07324Test
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8دورية أكاديمية
المؤلفون: Jungclaus, A, Górska, M, Mikołajczuk, M, Acosta, J, Taprogge, J, Nishimura, S, Doornenbal, P, Lorusso, G, Simpson, G S, Söderström, P-A, Sumikama, T, Xu, Z, Kumar, P, Martínez-Pinedo, G, Nowacki, F, Van Isacker, P, Baba, H, Browne, F, Fukuda, N, Gernhäuser, R, Gey, G, Inabe, N, Isobe, T, Jung, H S, Kameda, D, Kim, G D, Kim, Y-K, Kojouharov, I, Kubo, T, Kurz, N, Kwon, Y K, Li, Z, Sakurai, H, Schaffner, H, Shimizu, Y, Steiger, K, Suzuki, H, Takeda, H, Vajta, Zs, Watanabe, H, Wu, J, Yagi, A, Yoshinaga, K, Benzoni, G, Bönig, S, Chae, K Y, Daugas, J-M, Drouet, F, Gadea, A, Ilieva, S, Kondev, F G, Kröll, T, Lane, G J, Montaner-Pizá, A, Moschner, K, Naqvi, F, Niikura, M, Nishibata, H, Odahara, A, Orlandi, R, Patel, Z, Podolyák, Zs, Wendt, A
المصدر: Phys Rev Lett ; ISSN:1079-7114 ; Volume:132 ; Issue:22
الوصف: The known I^{π}=8_{1}^{+}, E_{x}=2129-keV isomer in the semimagic nucleus ^{130}Cd_{82} was populated in the projectile fission of a ^{238}U beam at the Radioactive Isotope Beam Factory at RIKEN. The high counting statistics of the accumulated data allowed us to determine the excitation energy, E_{x}=2001.2(7) keV, and half-life, T_{1/2}=57(3) ns, of the I^{π}=6_{1}^{+} state based on γγ coincidence information. Furthermore, the half-life of the 8_{1}^{+} state, T_{1/2}=224(4) ns, was remeasured with high precision. The new experimental information, combined with available data for ^{134}Sn and large-scale shell model calculations, allowed us to extract proton and neutron effective charges for ^{132}Sn, a doubly magic nucleus far-off stability. A comparison to analogous information for ^{100}Sn provides first reliable information regarding the isospin dependence of the isoscalar and isovector effective charges in heavy nuclei.
العلاقة: https://doi.org/10.1103/PhysRevLett.132.222501Test; https://pubmed.ncbi.nlm.nih.gov/38877923Test
الإتاحة: https://doi.org/10.1103/PhysRevLett.132.222501Test
https://pubmed.ncbi.nlm.nih.gov/38877923Test -
9دورية أكاديمية
المؤلفون: Si, M, Lozeva, R, Naïdja, H, Blanc, A, Daugas, J.-M, Didierjean, F, Duchêne, G, Köster, U, Kurtukian-Nieto, T, Le Blanc, F, Mutti, P, Ramdhane, M, Urban, W
المساهمون: 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), 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 Laue-Langevin (ILL), LaBoratoire d'Imagerie biOmédicale MultimodAle Paris-Saclay (BIOMAPS), Service Hospitalier Frédéric Joliot (SHFJ), Université Paris-Saclay-Institut des Sciences du Vivant Frédéric JOLIOT (JOLIOT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut des Sciences du Vivant Frédéric JOLIOT (JOLIOT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), University of Warsaw (UW)
المصدر: ISSN: 2469-9985.
مصطلحات موضوعية: [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
الوصف: International audience ; Background: Nuclear structure of the neutron-rich isotopes beyond 132 Sn is investigated. Purpose: The level scheme of 137 I is obtained after decay of 137 Te. Transitions in 136 I are detected after delayed neutron emission of 137 Te. The half life of 137 Te is measured. Methods:-delayed-ray spectroscopy is employed for neutron-rich 137 Sb and 137 Te isotopes, produced at the ILL after neutron-induced fission to populate excited states in 137 I. Results: The new decay level scheme of 137 I is established. The half lives of 137 Sb and 137 Te are determined as 0.57(26) s and 2.46(5) s, respectively. The-delayed neutron emission probability P limiting value of 137 Te is deduced to be 2.17(66)%. Conclusions: The experimental results are an important input to the theoretical description of nuclei in the region, being well interpreted within LSSM calculations and provide essential information on the firstforbidden transitions beyond > 82 and > 50.
العلاقة: hal-03812617; https://cnrs.hal.science/hal-03812617Test; https://cnrs.hal.science/hal-03812617/documentTest; https://cnrs.hal.science/hal-03812617/file/137Te_new_Min%20Si.pdfTest; INSPIRE: 2150823
الإتاحة: https://doi.org/10.1103/PhysRevC.106.014302Test
https://cnrs.hal.science/hal-03812617Test
https://cnrs.hal.science/hal-03812617/documentTest
https://cnrs.hal.science/hal-03812617/file/137Te_new_Min%20Si.pdfTest -
10تقرير
المؤلفون: Stefan, I., Santos, F. de Oliveira, Sorlin, O., Davinson, T., Lewitowicz, M., Dumitru, G., Angélique, J. C., Angélique, M., Berthoumieux, E., Borcea, C., Borcea, R., Buta, A., Daugas, J. M., De Grancey, F., Fadil, M., Grévy, S., Kiener, J., Lefebvre-Schuhl, A., Lenhardt, M., Mrazek, J., Negoita, F., Pantelica, D., Pellegriti, M. G., Perrot, L., Ploszajczak, M., Roig, O., Laurent, M. G. Saint, Ray, I., Stanoiu, M., Stodel, C., Tatischeff, V., Thomas, J. C.
المصدر: Physical Review C 90 (2014) 014307
مصطلحات موضوعية: Nuclear Experiment
الوصف: Radioactive beams of $^{14}$O and $^{15}$O were used to populate the resonant states 1/2$^+$, 5/2$^+$ and $0^-,1^-,2^-$ in the unbound $^{15}$F and $^{16}$F nuclei respectively by means of proton elastic scattering reactions in inverse kinematics. Based on their large proton spectroscopic factor values, the resonant states in $^{16}$F can be viewed as a core of $^{14}$O plus a proton in the 2s$_{1/2}$ or 1d$_{5/2}$ shell and a neutron in 1p$_{1/2}$. Experimental energies were used to derive the strength of the 2s$_{1/2}$-1p$_{1/2}$ and 1d$_{5/2}$-1p$_{1/2}$ proton-neutron interactions. It is found that the former changes by 40% compared with the mirror nucleus $^{16}$N, and the second by 10%. This apparent symmetry breaking of the nuclear force between mirror nuclei finds explanation in the role of the large coupling to the continuum for the states built on an $\ell=0$ proton configuration.
Comment: 6 pages, 3 figures, 2 tables, accepted for publication as a regular article in Physical Review Cالوصول الحر: http://arxiv.org/abs/1406.3610Test
