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Article ; Online: Study of the isospin character of 1-states using hadronic probes at intermediate energies

Derya V. / Endres J. / Harakeh M.N. / Savran D. / Spieker M. / Wörtche H.J. / Zilges A.

EPJ Web of Conferences, Vol 93, p

2015 Volume 01041

Abstract: The complementary (γ, γ′) and (α, α′γ) reactions were used to study the isospin properties of low-lying E1 excitations in the doubly-magic nucleus 48Ca. In contrast to heavier nuclei, a state-to-state change in isospin character was revealed in 48Ca and ... ...

Abstract	The complementary (γ, γ′) and (α, α′γ) reactions were used to study the isospin properties of low-lying E1 excitations in the doubly-magic nucleus 48Ca. In contrast to heavier nuclei, a state-to-state change in isospin character was revealed in 48Ca and a dominant isoscalar excitation was found which is interpreted as an isoscalar oscillation. Recently, protons at 80 MeV were used as an additional hadronic probe in a p-γ coincidence experiment on 140Ce for the first time. Results of the experiments on 48Ca and first results of the 140Ce will be presented in this contribution.
Keywords	Science ; Q ; Physics ; QC1-999
Language	English
Publishing date	2015-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Book ; Conference proceedings: Correlations and clustering phenomena in subatomic physics

Harakeh, M. N

[proceedings of a NATO Advanced Study Institute on Correlations and Clustering Phenomena in Subatomic Physics, held August 5 - 17, 1996, in Dronten, the Netherlands]

(NATO ASI series : Series B, Physics ; 359)

1997

Institution	Advanced Study Institute on Correlations and Clustering Phenomena in Subatomic Physics
Event/congress	NATO Advanced Study Institute on Correlations and Clustering Phenomena in Subatomic Physics (1996.08.05-16, DrontenNetherlands)
Author's details	ed. by M.N. Harakeh
Series title	NATO ASI series : Series B, Physics ; 359
Keywords	Angular correlations (Nuclear physics)/Congresses ; Clustering phenomena (Nuclear physics)/Congresses
Language	English
Size	VII, 267 S, grash. Darst
Publisher	Plenum Press
Publishing place	New York u.a.
Document type	Book ; Conference proceedings
Note	Literaturangaben
ISBN	0306456125 ; 9780306456121
Database	Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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Book ; Conference proceedings: Perspectives in the structure of hadronic systems

Harakeh, M. N

[proceedings of a NATO Advanced Study Institute on Perspectives in the Structure of Hadronic Systems, held August 2 - 15, 1993, in Dronten, The Netherlands]

(NATO ASI series : Series B, Physics ; 333)

1994

Institution	Advanced Study Institute on Perspectives in the Structure of Hadronic Systems
Event/congress	NATO Advanced Study Institute on Perspectives in the Structure of Hadronic Systems (1993.08.02-15, Dronten)
Author's details	ed. by M.N. Harakeh
Series title	NATO ASI series : Series B, Physics ; 333
Keywords	Hadron interactions/Congresses ; Hadron-nuclei interactions/Congresses ; Quark-gluon plasma/Congresses ; Quarks/Congresses
Language	English
Size	VIII, 360 S, graph. Darst, 26 cm
Publisher	Plenum Press
Publishing place	New York u.a.
Document type	Book ; Conference proceedings
Note	Literaturangaben
ISBN	0306447398 ; 9780306447396
Database	Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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Article ; Online: First observation of

Kondo, Y / Achouri, N L / Falou, H Al / Atar, L / Aumann, T / Baba, H / Boretzky, K / Caesar, C / Calvet, D / Chae, H / Chiga, N / Corsi, A / Delaunay, F / Delbart, A / Deshayes, Q / Dombrádi, Zs / Douma, C A / Ekström, A / Elekes, Z /

Forssén, C / Gašparić, I / Gheller, J-M / Gibelin, J / Gillibert, A / Hagen, G / Harakeh, M N / Hirayama, A / Hoffman, C R / Holl, M / Horvat, A / Horváth, Á / Hwang, J W / Isobe, T / Jiang, W G / Kahlbow, J / Kalantar-Nayestanaki, N / Kawase, S / Kim, S / Kisamori, K / Kobayashi, T / Körper, D / Koyama, S / Kuti, I / Lapoux, V / Lindberg, S / Marqués, F M / Masuoka, S / Mayer, J / Miki, K / Murakami, T / Najafi, M / Nakamura, T / Nakano, K / Nakatsuka, N / Nilsson, T / Obertelli, A / Ogata, K / de Oliveira Santos, F / Orr, N A / Otsu, H / Otsuka, T / Ozaki, T / Panin, V / Papenbrock, T / Paschalis, S / Revel, A / Rossi, D / Saito, A T / Saito, T Y / Sasano, M / Sato, H / Satou, Y / Scheit, H / Schindler, F / Schrock, P / Shikata, M / Shimizu, N / Shimizu, Y / Simon, H / Sohler, D / Sorlin, O / Stuhl, L / Sun, Z H / Takeuchi, S / Tanaka, M / Thoennessen, M / Törnqvist, H / Togano, Y / Tomai, T / Tscheuschner, J / Tsubota, J / Tsunoda, N / Uesaka, T / Utsuno, Y / Vernon, I / Wang, H / Yang, Z / Yasuda, M / Yoneda, K / Yoshida, S

Nature

2023 Volume 620, Issue 7976, Page(s) 965–970

Abstract: Subjecting a physical system to extreme conditions is one of the means often used to obtain a better understanding and deeper insight into its organization and structure. In the case of the atomic nucleus, one such approach is to investigate isotopes ... ...

Abstract	Subjecting a physical system to extreme conditions is one of the means often used to obtain a better understanding and deeper insight into its organization and structure. In the case of the atomic nucleus, one such approach is to investigate isotopes that have very different neutron-to-proton (N/Z) ratios than in stable nuclei. Light, neutron-rich isotopes exhibit the most asymmetric N/Z ratios and those lying beyond the limits of binding, which undergo spontaneous neutron emission and exist only as very short-lived resonances (about 10
Language	English
Publishing date	2023-08-30
Publishing country	England
Document type	Journal Article
ZDB-ID	120714-3
ISSN	1476-4687 ; 0028-0836
ISSN (online)	1476-4687
ISSN	0028-0836
DOI	10.1038/s41586-023-06352-6
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Article ; Online: Publisher Correction: First observation of

Nature

2023 Volume 623, Issue 7988, Page(s) E13

Language	English
Publishing date	2023-11-07
Publishing country	England
Document type	Published Erratum
ZDB-ID	120714-3
ISSN	1476-4687 ; 0028-0836
ISSN (online)	1476-4687
ISSN	0028-0836
DOI	10.1038/s41586-023-06815-w
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Article: Nature of the pygmy dipole resonance in 140Ce studied in (alpha, alpha' gamma) experiments.

Savran, D / Babilon, M / van den Berg, A M / Harakeh, M N / Hasper, J / Matic, A / Wörtche, H J / Zilges, A

Physical review letters

2006 Volume 97, Issue 17, Page(s) 172502

Abstract: A concentration of electric-dipole excitations below the particle threshold, which is frequently denoted as the pygmy dipole resonance, has been studied in the semimagic nucleus 140Ce in (alpha, alpha' gamma) experiments at E alpha = 136 MeV. The ... ...

Abstract	A concentration of electric-dipole excitations below the particle threshold, which is frequently denoted as the pygmy dipole resonance, has been studied in the semimagic nucleus 140Ce in (alpha, alpha' gamma) experiments at E alpha = 136 MeV. The technique of alpha-gamma coincidence experiments allows the separation of E1 excitations from states of other multipolarities in the same energy region and provides an excellent energy resolution to allow a detailed analysis for each state. The experimental results show that the PDR splits into two parts with different nuclear structure: one part which is excited in (alpha, alpha' gamma) as well as (gamma, gamma') experiments and one part which is excited only in (gamma, gamma').
Language	English
Publishing date	2006-10-27
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.97.172502
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Article ; Online: Observation of a correlated free four-neutron system.

Duer, M / Aumann, T / Gernhäuser, R / Panin, V / Paschalis, S / Rossi, D M / Achouri, N L / Ahn, D / Baba, H / Bertulani, C A / Böhmer, M / Boretzky, K / Caesar, C / Chiga, N / Corsi, A / Cortina-Gil, D / Douma, C A / Dufter, F / Elekes, Z /

Feng, J / Fernández-Domínguez, B / Forsberg, U / Fukuda, N / Gasparic, I / Ge, Z / Gheller, J M / Gibelin, J / Gillibert, A / Hahn, K I / Halász, Z / Harakeh, M N / Hirayama, A / Holl, M / Inabe, N / Isobe, T / Kahlbow, J / Kalantar-Nayestanaki, N / Kim, D / Kim, S / Kobayashi, T / Kondo, Y / Körper, D / Koseoglou, P / Kubota, Y / Kuti, I / Li, P J / Lehr, C / Lindberg, S / Liu, Y / Marqués, F M / Masuoka, S / Matsumoto, M / Mayer, J / Miki, K / Monteagudo, B / Nakamura, T / Nilsson, T / Obertelli, A / Orr, N A / Otsu, H / Park, S Y / Parlog, M / Potlog, P M / Reichert, S / Revel, A / Saito, A T / Sasano, M / Scheit, H / Schindler, F / Shimoura, S / Simon, H / Stuhl, L / Suzuki, H / Symochko, D / Takeda, H / Tanaka, J / Togano, Y / Tomai, T / Törnqvist, H T / Tscheuschner, J / Uesaka, T / Wagner, V / Yamada, H / Yang, B / Yang, L / Yang, Z H / Yasuda, M / Yoneda, K / Zanetti, L / Zenihiro, J / Zhukov, M V

Nature

2022 Volume 606, Issue 7915, Page(s) 678–682

Abstract: A long-standing question in nuclear physics is whether chargeless nuclear systems can exist. To our knowledge, only neutron stars represent near-pure neutron systems, where neutrons are squeezed together by the gravitational force to very high densities. ...

Abstract	A long-standing question in nuclear physics is whether chargeless nuclear systems can exist. To our knowledge, only neutron stars represent near-pure neutron systems, where neutrons are squeezed together by the gravitational force to very high densities. The experimental search for isolated multi-neutron systems has been an ongoing quest for several decades
Language	English
Publishing date	2022-06-22
Publishing country	England
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't
ZDB-ID	120714-3
ISSN	1476-4687 ; 0028-0836
ISSN (online)	1476-4687
ISSN	0028-0836
DOI	10.1038/s41586-022-04827-6
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Article ; Online: Observation of the Isovector Giant Monopole Resonance via the ^{28}Si(^{10}Be,^{10}B^{*}[1.74 MeV]) Reaction at 100 AMeV.

Scott, M / Zegers, R G T / Almus, R / Austin, Sam M / Bazin, D / Brown, B A / Campbell, C / Gade, A / Bowry, M / Galès, S / Garg, U / Harakeh, M N / Kwan, E / Langer, C / Loelius, C / Lipschutz, S / Litvinova, E / Lunderberg, E / Morse, C /

Noji, S / Perdikakis, G / Redpath, T / Robin, C / Sakai, H / Sasamoto, Y / Sasano, M / Sullivan, C / Tostevin, J A / Uesaka, T / Weisshaar, D

Physical review letters

2017 Volume 118, Issue 17, Page(s) 172501

Abstract: The (^{10}Be,^{10}B^{*}[1.74 MeV]) charge-exchange reaction at 100 AMeV is presented as a new probe for isolating the isovector (ΔT=1) nonspin-transfer (ΔS=0) response of nuclei, with ^{28}Si being the first nucleus studied. By using a secondary ^{10} ... ...

Abstract	The (^{10}Be,^{10}B^{*}[1.74 MeV]) charge-exchange reaction at 100 AMeV is presented as a new probe for isolating the isovector (ΔT=1) nonspin-transfer (ΔS=0) response of nuclei, with ^{28}Si being the first nucleus studied. By using a secondary ^{10}Be beam produced by fast fragmentation of ^{18}O nuclei at the NSCL Coupled Cyclotron Facility, applying the dispersion-matching technique with the S800 magnetic spectrometer to determine the excitation energy in ^{28}Al, and performing high-resolution γ-ray tracking with the Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) to identify the 1022-keV γ ray associated with the decay from the 1.74-MeV T=1 isobaric analog state in ^{10}B, a ΔS=0 excitation-energy spectrum in ^{28}Al was extracted. Monopole and dipole contributions were determined through a multipole-decomposition analysis, and the isovector giant dipole resonance and isovector giant monopole resonance (IVGMR) were identified. The results show that this probe is a powerful tool for studying the elusive IVGMR, which is of interest for performing stringent tests of modern density functional theories at high excitation energies and for constraining the bulk properties of nuclei and nuclear matter. The extracted distributions were compared with theoretical calculations based on the normal-modes formalism and the proton-neutron relativistic time-blocking approximation. Calculated cross sections based on these strengths underestimate the data by about a factor of 2, which likely indicates deficiencies in the reaction calculations based on the distorted wave Born approximation.
Language	English
Publishing date	2017-04-28
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.118.172501
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Article ; Online: Fragmentation of Single-Particle Strength around the Doubly Magic Nucleus ^{132}Sn and the Position of the 0f_{5/2} Proton-Hole State in ^{131}In.

Vaquero, V / Jungclaus, A / Aumann, T / Tscheuschner, J / Litvinova, E V / Tostevin, J A / Baba, H / Ahn, D S / Avigo, R / Boretzky, K / Bracco, A / Caesar, C / Camera, F / Chen, S / Derya, V / Doornenbal, P / Endres, J / Fukuda, N / Garg, U /

Giaz, A / Harakeh, M N / Heil, M / Horvat, A / Ieki, K / Imai, N / Inabe, N / Kalantar-Nayestanaki, N / Kobayashi, N / Kondo, Y / Koyama, S / Kubo, T / Martel, I / Matsushita, M / Million, B / Motobayashi, T / Nakamura, T / Nakatsuka, N / Nishimura, M / Nishimura, S / Ota, S / Otsu, H / Ozaki, T / Petri, M / Reifarth, R / Rodríguez-Sánchez, J L / Rossi, D / Saito, A T / Sakurai, H / Savran, D / Scheit, H / Schindler, F / Schrock, P / Semmler, D / Shiga, Y / Shikata, M / Shimizu, Y / Simon, H / Steppenbeck, D / Suzuki, H / Sumikama, T / Symochko, D / Syndikus, I / Takeda, H / Takeuchi, S / Taniuchi, R / Togano, Y / Tsubota, J / Wang, H / Wieland, O / Yoneda, K / Zenihiro, J / Zilges, A

Physical review letters

2020 Volume 124, Issue 2, Page(s) 22501

Abstract: Spectroscopic factors of neutron-hole and proton-hole states in ^{131}Sn and ^{131}In, respectively, were measured using one-nucleon removal reactions from doubly magic ^{132}Sn at relativistic energies. For ^{131}In, a 2910(50)-keV γ ray was observed ... ...

Abstract	Spectroscopic factors of neutron-hole and proton-hole states in ^{131}Sn and ^{131}In, respectively, were measured using one-nucleon removal reactions from doubly magic ^{132}Sn at relativistic energies. For ^{131}In, a 2910(50)-keV γ ray was observed for the first time and tentatively assigned to a decay from a 5/2^{-} state at 3275(50) keV to the known 1/2^{-} level at 365 keV. The spectroscopic factors determined for this new excited state and three other single-hole states provide first evidence for a strong fragmentation of single-hole strength in ^{131}Sn and ^{131}In. The experimental results are compared to theoretical calculations based on the relativistic particle-vibration coupling model and to experimental information for single-hole states in the stable doubly magic nucleus ^{208}Pb.
Language	English
Publishing date	2020-02-06
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.124.022501
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Article ; Online: Isospin character of the pygmy dipole resonance in 124Sn.

Endres, J / Litvinova, E / Savran, D / Butler, P A / Harakeh, M N / Harissopulos, S / Herzberg, R-D / Krücken, R / Lagoyannis, A / Pietralla, N / Ponomarev, V Yu / Popescu, L / Ring, P / Scheck, M / Sonnabend, K / Stoica, V I / Wörtche, H J / Zilges, A

Physical review letters

2010 Volume 105, Issue 21, Page(s) 212503

Abstract: The pygmy dipole resonance has been studied in the proton-magic nucleus 124Sn with the (α, α'γ) coincidence method at Eα=136 MeV. The comparison with results of photon-scattering experiments reveals a splitting into two components with different ... ...

Abstract	The pygmy dipole resonance has been studied in the proton-magic nucleus 124Sn with the (α, α'γ) coincidence method at Eα=136 MeV. The comparison with results of photon-scattering experiments reveals a splitting into two components with different structure: one group of states which is excited in (α, α'γ) as well as in (γ, γ') reactions and a group of states at higher energies which is only excited in (γ, γ') reactions. Calculations with the self-consistent relativistic quasiparticle time-blocking approximation and the quasiparticle phonon model are in qualitative agreement with the experimental results and predict a low-lying isoscalar component dominated by neutron-skin oscillations and a higher-lying more isovector component on the tail of the giant dipole resonance.
Language	English
Publishing date	2010-11-19
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.105.212503
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