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  1. Article ; Online: A new approach for deducing rms proton radii from charge-changing reactions of neutron-rich nuclei and the reaction-target dependence.

    Zhang, Jichao / Sun, Baohua / Tanihata, Isao / Kanungo, Rituparna / Scheidenberger, Christoph / Terashima, Satoru / Wang, Feng / Ameil, Frederic / Atkinson, Joel / Ayyad, Yassid / Bagchi, Soumya / Cortina-Gil, Dolores / Dillmann, Iris / Estradé, Alfredo / Evdokimov, Alexey / Farinon, Fabio / Geissel, Hans / Guastalla, Giulia / Janik, Rudolf /
    Kaur, Satbir / Knöbel, Ronja / Kurcewicz, Jan / Litvinov, Yury / Marta, Michele / Mostazo, Magdalena / Mukha, Ivan / Nociforo, Chiara / Ong, Hooi Jin / Pietri, Stephane / Prochazka, Andrej / Sitar, Branislav / Strmen, Peter / Takechi, Maya / Tanaka, Junki / Vargas, Jossitt / Weick, Helmut / Winfield, John Stuart

    Science bulletin

    2024  

    Abstract: We report the charge-changing cross sections ( ... ...

    Abstract We report the charge-changing cross sections (σ
    Language English
    Publishing date 2024-03-26
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2816140-3
    ISSN 2095-9281 ; 2095-9273
    ISSN (online) 2095-9281
    ISSN 2095-9273
    DOI 10.1016/j.scib.2024.03.051
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Proton Distribution Radii of ^{16-24}O: Signatures of New Shell Closures and Neutron Skin.

    Kaur, S / Kanungo, R / Horiuchi, W / Hagen, G / Holt, J D / Hu, B S / Miyagi, T / Suzuki, T / Ameil, F / Atkinson, J / Ayyad, Y / Bagchi, S / Cortina-Gil, D / Dillmann, I / Estradé, A / Evdokimov, A / Farinon, F / Geissel, H / Guastalla, G /
    Janik, R / Knöbel, R / Kurcewicz, J / Litvinov, Yu A / Marta, M / Mostazo, M / Mukha, I / Nociforo, C / Ong, H J / Otsuka, T / Pietri, S / Prochazka, A / Scheidenberger, C / Sitar, B / Strmen, P / Takechi, M / Tanaka, J / Tanihata, I / Terashima, S / Vargas, J / Weick, H / Winfield, J S

    Physical review letters

    2022  Volume 129, Issue 14, Page(s) 142502

    Abstract: The root mean square radii of the proton density distribution in ^{16-24}O derived from measurements of charge changing cross sections with a carbon target at ∼900A  MeV together with the matter radii portray thick neutron skin for ^{22-24}O despite ^{22, ...

    Abstract The root mean square radii of the proton density distribution in ^{16-24}O derived from measurements of charge changing cross sections with a carbon target at ∼900A  MeV together with the matter radii portray thick neutron skin for ^{22-24}O despite ^{22,24}O being doubly magic. Imprints of the shell closures at N=14 and 16 are reflected in local minima of their proton radii that provide evidence for the tensor interaction causing them. The radii agree with ab initio calculations employing the chiral NNLO_{sat} interaction, though skin thickness predictions are challenged. Shell model predictions agree well with the data.
    MeSH term(s) Carbon ; Neutrons ; Protons
    Chemical Substances Protons ; Carbon (7440-44-0)
    Language English
    Publishing date 2022-10-14
    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.129.142502
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  3. Article ; Online: Towards the Limits of Existence of Nuclear Structure: Observation and First Spectroscopy of the Isotope ^{31}K by Measuring Its Three-Proton Decay.

    Kostyleva, D / Mukha, I / Acosta, L / Casarejos, E / Chudoba, V / Ciemny, A A / Dominik, W / Dueñas, J A / Dunin, V / Espino, J M / Estradé, A / Farinon, F / Fomichev, A / Geissel, H / Gorshkov, A / Grigorenko, L V / Janas, Z / Kamiński, G / Kiselev, O /
    Knöbel, R / Krupko, S / Kuich, M / Litvinov, Yu A / Marquinez-Durán, G / Martel, I / Mazzocchi, C / Nociforo, C / Ordúz, A K / Pfützner, M / Pietri, S / Pomorski, M / Prochazka, A / Rymzhanova, S / Sánchez-Benítez, A M / Scheidenberger, C / Simon, H / Sitar, B / Slepnev, R / Stanoiu, M / Strmen, P / Szarka, I / Takechi, M / Tanaka, Y K / Weick, H / Winkler, M / Winfield, J S / Xu, X / Zhukov, M V

    Physical review letters

    2019  Volume 123, Issue 9, Page(s) 92502

    Abstract: The most remote isotope from the proton dripline (by 4 atomic mass units) has been observed: ^{31}K. It is unbound with respect to three-proton (3p) emission, and its decays have been detected in flight by measuring the trajectories of all decay products ...

    Abstract The most remote isotope from the proton dripline (by 4 atomic mass units) has been observed: ^{31}K. It is unbound with respect to three-proton (3p) emission, and its decays have been detected in flight by measuring the trajectories of all decay products using microstrip detectors. The 3p emission processes have been studied by the means of angular correlations of ^{28}S+3p and the respective decay vertices. The energies of the previously unknown ground and excited states of ^{31}K have been determined. This provides its 3p separation energy value S_{3p} of -4.6(2)  MeV. Upper half-life limits of 10 ps of the observed ^{31}K states have been derived from distributions of the measured decay vertices.
    Language English
    Publishing date 2019-09-19
    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.123.092502
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  4. Article ; Online: Proton Distribution Radii of ^{12-19}C Illuminate Features of Neutron Halos.

    Kanungo, R / Horiuchi, W / Hagen, G / Jansen, G R / Navratil, P / Ameil, F / Atkinson, J / Ayyad, Y / Cortina-Gil, D / Dillmann, I / Estradé, A / Evdokimov, A / Farinon, F / Geissel, H / Guastalla, G / Janik, R / Kimura, M / Knöbel, R / Kurcewicz, J /
    Litvinov, Yu A / Marta, M / Mostazo, M / Mukha, I / Nociforo, C / Ong, H J / Pietri, S / Prochazka, A / Scheidenberger, C / Sitar, B / Strmen, P / Suzuki, Y / Takechi, M / Tanaka, J / Tanihata, I / Terashima, S / Vargas, J / Weick, H / Winfield, J S

    Physical review letters

    2016  Volume 117, Issue 10, Page(s) 102501

    Abstract: Proton radii of ^{12-19}C densities derived from first accurate charge changing cross section measurements at 900A  MeV with a carbon target are reported. A thick neutron surface evolves from ∼0.5  fm in ^{15}C to ∼1  fm in ^{19}C. The halo radius in ^{ ... ...

    Abstract Proton radii of ^{12-19}C densities derived from first accurate charge changing cross section measurements at 900A  MeV with a carbon target are reported. A thick neutron surface evolves from ∼0.5  fm in ^{15}C to ∼1  fm in ^{19}C. The halo radius in ^{19}C is found to be 6.4±0.7  fm as large as ^{11}Li. Ab initio calculations based on chiral nucleon-nucleon and three-nucleon forces reproduce the radii well.
    Language English
    Publishing date 2016-09-02
    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.117.102501
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Proton radii of (12-17)B define a thick neutron surface in ¹⁷B.

    Estradé, A / Kanungo, R / Horiuchi, W / Ameil, F / Atkinson, J / Ayyad, Y / Cortina-Gil, D / Dillmann, I / Evdokimov, A / Farinon, F / Geissel, H / Guastalla, G / Janik, R / Kimura, M / Knöbel, R / Kurcewicz, J / Litvinov, Yu A / Marta, M / Mostazo, M /
    Mukha, I / Nociforo, C / Ong, H J / Pietri, S / Prochazka, A / Scheidenberger, C / Sitar, B / Strmen, P / Suzuki, Y / Takechi, M / Tanaka, J / Tanihata, I / Terashima, S / Vargas, J / Weick, H / Winfield, J S

    Physical review letters

    2014  Volume 113, Issue 13, Page(s) 132501

    Abstract: The first determination of radii of point proton distribution (proton radii) of (12-17)B from charge-changing cross sections (σ(CC)) measurements at the FRS, GSI, Darmstadt is reported. The proton radii are deduced from a finite-range Glauber model ... ...

    Abstract The first determination of radii of point proton distribution (proton radii) of (12-17)B from charge-changing cross sections (σ(CC)) measurements at the FRS, GSI, Darmstadt is reported. The proton radii are deduced from a finite-range Glauber model analysis of the σ(CC). The radii show an increase from ¹³B to ¹⁷B and are consistent with predictions from the antisymmetrized molecular dynamics model for the neutron-rich nuclei. The measurements show the existence of a thick neutron surface with neutron-proton radius difference of 0.51(0.11) fm in ¹⁷B.
    Language English
    Publishing date 2014-09-26
    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.113.132501
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  6. Article ; Online: Measurement of Excitation Spectra in the ^{12}C(p,d) Reaction near the η^{'} Emission Threshold.

    Tanaka, Y K / Itahashi, K / Fujioka, H / Ayyad, Y / Benlliure, J / Brinkmann, K-T / Friedrich, S / Geissel, H / Gellanki, J / Guo, C / Gutz, E / Haettner, E / Harakeh, M N / Hayano, R S / Higashi, Y / Hirenzaki, S / Hornung, C / Igarashi, Y / Ikeno, N /
    Iwasaki, M / Jido, D / Kalantar-Nayestanaki, N / Kanungo, R / Knöbel, R / Kurz, N / Metag, V / Mukha, I / Nagae, T / Nagahiro, H / Nanova, M / Nishi, T / Ong, H J / Pietri, S / Prochazka, A / Rappold, C / Reiter, M P / Rodríguez-Sánchez, J L / Scheidenberger, C / Simon, H / Sitar, B / Strmen, P / Sun, B / Suzuki, K / Szarka, I / Takechi, M / Tanihata, I / Terashima, S / Watanabe, Y N / Weick, H / Widmann, E / Winfield, J S / Xu, X / Yamakami, H / Zhao, J

    Physical review letters

    2016  Volume 117, Issue 20, Page(s) 202501

    Abstract: Excitation spectra of ^{11}C are measured in the ^{12}C(p,d) reaction near the η^{'} emission threshold. A proton beam extracted from the synchrotron SIS-18 at GSI with an incident energy of 2.5 GeV impinges on a carbon target. The momenta of deuterons ... ...

    Abstract Excitation spectra of ^{11}C are measured in the ^{12}C(p,d) reaction near the η^{'} emission threshold. A proton beam extracted from the synchrotron SIS-18 at GSI with an incident energy of 2.5 GeV impinges on a carbon target. The momenta of deuterons emitted at 0° are precisely measured with the fragment separator (FRS) operated as a spectrometer. In contrast to theoretical predictions on the possible existence of deeply bound η^{'}-mesic states in carbon nuclei, no distinct structures are observed associated with the formation of bound states. The spectra are analyzed to set stringent constraints on the formation cross section and on the hitherto barely known η^{'}-nucleus interaction.
    Language English
    Publishing date 2016-11-11
    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.117.202501
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  7. Article ; Online: Observation and Spectroscopy of New Proton-Unbound Isotopes ³⁰Ar and ²⁹Cl: An Interplay of Prompt Two-Proton and Sequential Decay.

    Mukha, I / Grigorenko, L V / Xu, X / Acosta, L / Casarejos, E / Ciemny, A A / Dominik, W / Duénas-Díaz, J / Dunin, V / Espino, J M / Estradé, A / Farinon, F / Fomichev, A / Geissel, H / Golubkova, T A / Gorshkov, A / Janas, Z / Kamiński, G / Kiselev, O /
    Knöbel, R / Krupko, S / Kuich, M / Litvinov, Yu A / Marquinez-Durán, G / Martel, I / Mazzocchi, C / Nociforo, C / Ordúz, A K / Pfützner, M / Pietri, S / Pomorski, M / Prochazka, A / Rymzhanova, S / Sánchez-Benítez, A M / Scheidenberger, C / Sharov, P / Simon, H / Sitar, B / Slepnev, R / Stanoiu, M / Strmen, P / Szarka, I / Takechi, M / Tanaka, Y K / Weick, H / Winkler, M / Winfield, J S / Zhukov, M V

    Physical review letters

    2015  Volume 115, Issue 20, Page(s) 202501

    Abstract: Previously unknown isotopes (30)Ar and (29)Cl have been identified by measurement of the trajectories of their in-flight decay products (28)S+p+p and (28)S+p, respectively. The analysis of angular correlations of the fragments provided information on ... ...

    Abstract Previously unknown isotopes (30)Ar and (29)Cl have been identified by measurement of the trajectories of their in-flight decay products (28)S+p+p and (28)S+p, respectively. The analysis of angular correlations of the fragments provided information on decay energies and the structure of the parent states. The ground states of (30)Ar and (29)Cl were found at 2.25(-0.10)(+0.15) and 1.8±0.1  MeV above the two- and one-proton thresholds, respectively. The lowest states in (30)Ar and (29)Cl point to a violation of isobaric symmetry in the structure of these unbound nuclei. The two-proton decay has been identified in a transition region between simultaneous two-proton and sequential proton emissions from the (30)Ar ground state, which is characterized by an interplay of three-body and two-body decay mechanisms. The first hint of a fine structure of the two-proton decay of (30)Ar*(2(+)) has been obtained by detecting two decay branches into the ground and first-excited states of the (28)S fragment.
    Language English
    Publishing date 2015-11-13
    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.115.202501
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  8. Article: One-neutron removal measurement reveals 24O as a new doubly magic nucleus.

    Kanungo, R / Nociforo, C / Prochazka, A / Aumann, T / Boutin, D / Cortina-Gil, D / Davids, B / Diakaki, M / Farinon, F / Geissel, H / Gernhäuser, R / Gerl, J / Janik, R / Jonson, B / Kindler, B / Knöbel, R / Krücken, R / Lantz, M / Lenske, H /
    Litvinov, Y / Lommel, B / Mahata, K / Maierbeck, P / Musumarra, A / Nilsson, T / Otsuka, T / Perro, C / Scheidenberger, C / Sitar, B / Strmen, P / Sun, B / Szarka, I / Tanihata, I / Utsuno, Y / Weick, H / Winkler, M

    Physical review letters

    2009  Volume 102, Issue 15, Page(s) 152501

    Abstract: The first measurement of the momentum distribution for one-neutron removal from (24)O at 920A MeV performed at GSI, Darmstadt is reported. The observed distribution has a width (FWHM) of 99 +/- 4 MeV/c in the projectile rest frame and a one-neutron ... ...

    Abstract The first measurement of the momentum distribution for one-neutron removal from (24)O at 920A MeV performed at GSI, Darmstadt is reported. The observed distribution has a width (FWHM) of 99 +/- 4 MeV/c in the projectile rest frame and a one-neutron removal cross section of 63 +/- 7 mb. The results are well explained with a nearly pure 2s_{1/2} neutron spectroscopic factor of 1.74 +/- 0.19 within the eikonal model. This large s-wave probability shows a spherical shell closure thereby confirming earlier suggestions that (24)O is a new doubly magic nucleus.
    Language English
    Publishing date 2009-04-17
    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.102.152501
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  9. Article: Shell structure of the near-dripline nucleus 23O.

    Cortina-Gil, D / Fernandez-Vazquez, J / Aumann, T / Baumann, T / Benlliure, J / Borge, M J G / Chulkov, L V / Datta Pramanik, U / Forssén, C / Fraile, L M / Geissel, H / Gerl, J / Hammache, F / Itahashi, K / Janik, R / Jonson, B / Mandal, S / Markenroth, K / Meister, M /
    Mocko, M / Münzenberg, G / Ohtsubo, T / Ozawa, A / Prezado, Y / Pribora, V / Riisager, K / Scheit, H / Schneider, R / Schrieder, G / Simon, H / Sitar, B / Stolz, A / Strmen, P / Sümmerer, K / Szarka, I / Weick, H

    Physical review letters

    2004  Volume 93, Issue 6, Page(s) 62501

    Abstract: Breakup reactions were used to study the ground-state configuration of the neutron-rich isotope 23O. The 22O fragments produced in one-nucleon removal from 23O at 938 MeV/nucleon in a carbon target were detected in coincidence with deexciting gamma rays. ...

    Abstract Breakup reactions were used to study the ground-state configuration of the neutron-rich isotope 23O. The 22O fragments produced in one-nucleon removal from 23O at 938 MeV/nucleon in a carbon target were detected in coincidence with deexciting gamma rays. The widths of the longitudinal momentum distributions of the 22O fragments and the one-neutron removal cross sections were interpreted in the framework of a simple theoretical model which favors the assignment of Ipi = 1/2+ to the 23O ground state.
    Language English
    Publishing date 2004-08-06
    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.93.062501
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  10. Article ; Online: New isomers in the full seniority scheme of neutron-rich lead isotopes: the role of effective three-body forces.

    Gottardo, A / Valiente-Dobón, J J / Benzoni, G / Nicolini, R / Gadea, A / Lunardi, S / Boutachkov, P / Bruce, A M / Górska, M / Grebosz, J / Pietri, S / Podolyák, Zs / Pfützner, M / Regan, P H / Weick, H / Alcántara Núñez, J / Algora, A / Al-Dahan, N / de Angelis, G /
    Ayyad, Y / Alkhomashi, N / Allegro, P R P / Bazzacco, D / Benlliure, J / Bowry, M / Bracco, A / Bunce, M / Camera, F / Casarejos, E / Cortes, M L / Crespi, F C L / Corsi, A / Denis Bacelar, A M / Deo, A Y / Domingo-Pardo, C / Doncel, M / Dombradi, Zs / Engert, T / Eppinger, K / Farrelly, G F / Farinon, F / Farnea, E / Geissel, H / Gerl, J / Goel, N / Gregor, E / Habermann, T / Hoischen, R / Janik, R / 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 / Prochazka, A / Prokopowicz, W / Recchia, F / Ribas, R V / Reed, M W / Rudolph, D / Sahin, E / Schaffner, H / Sharma, A / Sitar, B / Siwal, D / Steiger, K / Strmen, P / Swan, T P D / Szarka, I / Ur, C A / Walker, P M / Wieland, O / Wollersheim, H-J / Nowacki, F / Maglione, E / Zuker, A P

    Physical review letters

    2012  Volume 109, Issue 16, Page(s) 162502

    Abstract: The neutron-rich lead isotopes, up to (216)Pb, have been studied for the first time, exploiting the fragmentation of a primary uranium beam at the FRS-RISING setup at GSI. The observed isomeric states exhibit electromagnetic transition strengths which ... ...

    Abstract The neutron-rich lead isotopes, up to (216)Pb, have been studied for the first time, exploiting the fragmentation of a primary uranium beam at the FRS-RISING setup at GSI. The observed isomeric states exhibit electromagnetic transition strengths which deviate from state-of-the-art shell-model calculations. It is shown that their complete description demands the introduction of effective three-body interactions and two-body transition operators in the conventional neutron valence space beyond (208)Pb.
    Language English
    Publishing date 2012-10-19
    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.109.162502
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