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Marchi T, de Angelis G, Valiente-Dobón JJ, Bader VM, Baugher T, Bazin D, Berryman J, Bonaccorso A, Clark R, Coraggio L, Crawford HL, Doncel M, Farnea E, Gade A, Gadea A, Gargano A, Glasmacher T, Gottardo A, Gramegna F, Itaco N, John PR, Kumar R, Lenzi SM, Lunardi S, McDaniel S, Michelagnoli C, Mengoni D, Modamio V, Napoli DR, Quintana B, Ratkiewicz A, Recchia F, Sahin E, Stroberg R, Weisshaar D, Wimmer K, Winkler R. Quadrupole transition strength in the (74)Ni nucleus and core polarization effects in the neutron-rich Ni isotopes. Phys Rev Lett 2014; 113:182501. [PMID: 25396363 DOI: 10.1103/physrevlett.113.182501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Indexed: 06/04/2023]
Abstract
The reduced transition probability B(E2;0(+)→2(+)) has been measured for the neutron-rich nucleus (74)Ni in an intermediate energy Coulomb excitation experiment performed at the National Superconducting Cyclotron Laboratory at Michigan State University. The obtained B(E2;0(+)→2(+))=642(-226)(+216) e(2) fm(4) value defines a trend which is unexpectedly small if referred to (70)Ni and to a previous indirect determination of the transition strength in (74)Ni. This indicates a reduced polarization of the Z=28 core by the valence neutrons. Calculations in the pfgd model space reproduce well the experimental result indicating that the B(E2) strength predominantly corresponds to neutron excitations. The ratio of the neutron and proton multipole matrix elements supports such an interpretation.
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Affiliation(s)
- T Marchi
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy and Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, 35131 Padova, Italy
| | - G de Angelis
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy
| | - J J Valiente-Dobón
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy
| | - V M Bader
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - T Baugher
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - D Bazin
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - J Berryman
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - A Bonaccorso
- Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, 56127 Pisa, Italy
| | - R Clark
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - L Coraggio
- Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, 80126 Napoli, Italy
| | - H L Crawford
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - M Doncel
- Laboratorio De Radiaciones Ionizantes, Universidad de Salamanca, 37008 Salamanca, Spain
| | - E Farnea
- Istituto Nazionale di Fisica Nucleare, Sezione di Padova, 35131 Padova, Italy
| | - A Gade
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - A Gadea
- Instituto de Física Corpuscular, CSIC-Universitat de València, 46980 València, Spain
| | - A Gargano
- Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, 80126 Napoli, Italy
| | - T Glasmacher
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - A Gottardo
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy
| | - F Gramegna
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy
| | - N Itaco
- Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, 80126 Napoli, Italy and Dipartimento di Fisica, Università di Napoli Federico II, 80126 Napoli, Italy
| | - P R John
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, 35131 Padova, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, 35131 Padova, Italy
| | - R Kumar
- Department of Physics, Deenbandhu Chhoturam University of Science and Technology, Murthal, Sonepat, Haryana 131039, India
| | - S M Lenzi
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, 35131 Padova, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, 35131 Padova, Italy
| | - S Lunardi
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, 35131 Padova, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, 35131 Padova, Italy
| | - S McDaniel
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - C Michelagnoli
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, 35131 Padova, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, 35131 Padova, Italy
| | - D Mengoni
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, 35131 Padova, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, 35131 Padova, Italy
| | - V Modamio
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy
| | - D R Napoli
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy
| | - B Quintana
- Laboratorio De Radiaciones Ionizantes, Universidad de Salamanca, 37008 Salamanca, Spain
| | - A Ratkiewicz
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - F Recchia
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, 35131 Padova, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, 35131 Padova, Italy
| | - E Sahin
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy
| | - R Stroberg
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - D Weisshaar
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - K Wimmer
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - R Winkler
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
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Marchi T, de Angelis G, Baugher T, Bazin D, Berryman J, Bonaccorso A, Clark R, Coraggio L, Covello A, Crawford H, Doncel M, Farnea E, Gade A, Gadea A, Gargano A, Glasmacher T, Gottardo A, Gramegna F, Itaco N, Kumar R, Lenzi SM, McDaniel S, Michelagnoli C, Napoli D, Quintana B, Ratkiewicz A, Recchia F, Sahin E, Stroberg R, Valiente-Dobón J, Weisshaar D, Wimmer K, Winkler R. Evolution of collectivity in the78Ni region: Coulomb excitation of74Ni at intermediate energies. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146602066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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3
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Marchi T, de Angelis G, Baugher T, Bazin D, Berryman J, Bonaccorso A, Clark R, Coraggio L, Covello A, Crawford H, Doncel M, Farnea E, Gade A, Gadea A, Gargano A, Glasmacher T, Gottardo A, Gramegna F, Itaco N, Kumar R, Lenzi SM, McDaniel S, Michelagnoli C, Napoli D, Quintana B, Ratkiewicz A, Recchia F, Sahin E, Stroberg R, Valiente-Dobón J, Weisshaar D, Wimmer K, Winkler R. Probing core polarization around78Ni: intermediate energy Coulomb excitation of74Ni. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20136301021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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4
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Winkler R, Gade A, Baugher T, Bazin D, Brown BA, Glasmacher T, Grinyer GF, Meharchand R, McDaniel S, Ratkiewicz A, Weisshaar D. Quadrupole collectivity beyond N = 28: intermediate-energy Coulomb excitation of (47,48)Ar. Phys Rev Lett 2012; 108:182501. [PMID: 22681067 DOI: 10.1103/physrevlett.108.182501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Indexed: 06/01/2023]
Abstract
We report on the first experimental study of quadrupole collectivity in the very neutron-rich nuclei (47,48)Ar using intermediate-energy Coulomb excitation. These nuclei are located along the path from doubly magic Ca to collective S and Si isotopes, a critical region of shell evolution and structural change. The deduced B(E2) transition strengths are confronted with large-scale shell-model calculations in the sdpf shell using the state-of-the-art SDPF-Uand EPQQM effective interactions. The comparison between experiment and theory indicates that a shell-model description of Ar isotopes around N=28 remains a challenge.
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Affiliation(s)
- R Winkler
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
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5
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Grinyer GF, Bazin D, Gade A, Tostevin JA, Adrich P, Bowen MD, Brown BA, Campbell CM, Cook JM, Glasmacher T, McDaniel S, Navrátil P, Obertelli A, Quaglioni S, Siwek K, Terry JR, Weisshaar D, Wiringa RB. Knockout reactions from p-shell nuclei: tests of ab initio structure models. Phys Rev Lett 2011; 106:162502. [PMID: 21599362 DOI: 10.1103/physrevlett.106.162502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Indexed: 05/30/2023]
Abstract
Absolute cross sections have been determined following single neutron knockout reactions from 10Be and 10C at intermediate energy. Nucleon density distributions and bound-state wave function overlaps obtained from both variational Monte Carlo (VMC) and no core shell model (NCSM) ab initio calculations have been incorporated into the theoretical description of knockout reactions. Comparison to experimental cross sections demonstrates that the VMC approach, with the inclusion of 3-body forces, provides the best overall agreement while the NCSM and conventional shell-model calculations both overpredict the cross sections by 20% to 30% for 10Be and by 40% to 50% for 10C, respectively. This study gains new insight into the importance of 3-body forces and continuum effects in light nuclei and provides a sensitive technique to assess the accuracy of ab initio calculations for describing these effects.
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Affiliation(s)
- G F Grinyer
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
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6
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Rother W, Dewald A, Iwasaki H, Lenzi SM, Starosta K, Bazin D, Baugher T, Brown BA, Crawford HL, Fransen C, Gade A, Ginter TN, Glasmacher T, Grinyer GF, Hackstein M, Ilie G, Jolie J, McDaniel S, Miller D, Petkov P, Pissulla T, Ratkiewicz A, Ur CA, Voss P, Walsh KA, Weisshaar D, Zell KO. Enhanced quadrupole collectivity at N = 40: the case of neutron-rich Fe isotopes. Phys Rev Lett 2011; 106:022502. [PMID: 21405225 DOI: 10.1103/physrevlett.106.022502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Indexed: 05/30/2023]
Abstract
The transition rates for the 2(1)+ states in (62,64,66)Fe were studied using the recoil distance Doppler-shift technique applied to projectile Coulomb excitation reactions. The deduced E2 strengths illustrate the enhanced collectivity of the neutron-rich Fe isotopes up to N = 40. The results are interpreted using the generalized concept of valence proton symmetry which describes the evolution of nuclear structure around N = 40 as governed by the number of valence protons with respect to Z ≈ 30. The trend of collectivity suggested by the experimental data is described by state-of-the-art shell-model calculations with a new effective interaction developed for the fpgd valence space.
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Affiliation(s)
- W Rother
- Institut für Kernphysik der Universität zu Köln, D-50937 Köln, Germany
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7
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Gade A, Adrich P, Bazin D, Brown BA, Cook JM, Diget CA, Glasmacher T, McDaniel S, Ratkiewicz A, Siwek K, Weisshaar D. In-beam gamma-ray spectroscopy of very neutron-rich nuclei: excited states in 46S and 48Ar. Phys Rev Lett 2009; 102:182502. [PMID: 19518865 DOI: 10.1103/physrevlett.102.182502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2009] [Indexed: 05/27/2023]
Abstract
We report on the first in-beam gamma-ray spectroscopy study of the very neutron-rich nucleus 46S. The N=30 isotones 46S and 48Ar were produced in a novel way in two steps that both necessarily involve nucleon exchange and neutron pickup reactions 9Be(48Ca,48K)X followed by 9Be(48K,48Ar+gamma)X at 85.7 MeV/u midtarget energy and 9Be(48Ca,46Cl)X followed by 9Be(46Cl,46S+gamma)X at 87.0 MeV/u midtarget energy, respectively. The results are compared to large-scale shell-model calculations in the sd-pf shell using the SDPF-NR effective interaction and Z-dependent modifications.
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Affiliation(s)
- A Gade
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
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8
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Vaman C, Andreoiu C, Bazin D, Becerril A, Brown BA, Campbell CM, Chester A, Cook JM, Dinca DC, Gade A, Galaviz D, Glasmacher T, Hjorth-Jensen M, Horoi M, Miller D, Moeller V, Mueller WF, Schiller A, Starosta K, Stolz A, Terry JR, Volya A, Zelevinsky V, Zwahlen H. Z = 50 shell gap near 100Sn from intermediate-energy Coulomb excitations in even-mass 106-112Sn isotopes. Phys Rev Lett 2007; 99:162501. [PMID: 17995242 DOI: 10.1103/physrevlett.99.162501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2006] [Revised: 08/01/2007] [Indexed: 05/25/2023]
Abstract
Rare isotope beams of neutron-deficient 106,108,110Sn from the fragmentation of 124Xe were employed in an intermediate-energy Coulomb excitation experiment. The measured B(E2,0(1)(+)-->2(1)(+)) values for 108Sn and 110Sn and the results obtained for the 106Sn show that the transition strengths for these nuclei are larger than predicted by current state-of-the-art shell-model calculations. This discrepancy might be explained by contributions of the protons from within the Z = 50 shell to the structure of low-energy excited states in this region.
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Affiliation(s)
- C Vaman
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
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9
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Gade A, Adrich P, Bazin D, Bowen MD, Brown BA, Campbell CM, Cook JM, Ettenauer S, Glasmacher T, Kemper KW, McDaniel S, Obertelli A, Otsuka T, Ratkiewicz A, Siwek K, Terry JR, Tostevin JA, Utsuno Y, Weisshaar D. Spectroscopy of 36Mg: interplay of normal and intruder configurations at the neutron-rich boundary of the "island of inversion". Phys Rev Lett 2007; 99:072502. [PMID: 17930889 DOI: 10.1103/physrevlett.99.072502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2007] [Indexed: 05/25/2023]
Abstract
We report on the first spectroscopy study of the very neutron-rich nucleus (36)(12)Mg24 using the direct two-proton knockout reaction 9Be(38Si,36Mg+gamma)X at 83 MeV/nucleon. The energy of the first excited 2+ state of 36Mg, E(2+(1)=660(6) keV, was measured. The magnitude of the partial cross sections to the ground state and the 2+(1) state is indicative of strong intruder admixtures in the lowest-lying states as suggested by Monte Carlo shell-model calculations.
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Affiliation(s)
- A Gade
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
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10
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Starosta K, Dewald A, Dunomes A, Adrich P, Amthor AM, Baumann T, Bazin D, Bowen M, Brown BA, Chester A, Gade A, Galaviz D, Glasmacher T, Ginter T, Hausmann M, Horoi M, Jolie J, Melon B, Miller D, Moeller V, Norris RP, Pissulla T, Portillo M, Rother W, Shimbara Y, Stolz A, Vaman C, Voss P, Weisshaar D, Zelevinsky V. Shape and structure of N=Z 64Ge: electromagnetic transition rates from the application of the recoil distance method to a knockout reaction. Phys Rev Lett 2007; 99:042503. [PMID: 17678356 DOI: 10.1103/physrevlett.99.042503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2007] [Indexed: 05/16/2023]
Abstract
Transition rate measurements are reported for the 2(1)+ and 2(2)+ states in N=Z 64Ge. The experimental results are in excellent agreement with large-scale shell-model calculations applying the recently developed GXPF1A interactions. The measurement was done using the recoil distance method (RDM) and a unique combination of state-of-the-art instruments at the National Superconducting Cyclotron Laboratory (NSCL). States of interest were populated via an intermediate-energy single-neutron knockout reaction. RDM studies of knockout and fragmentation reaction products hold the promise of reaching far from stability and providing lifetime information for excited states in a wide range of nuclei.
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Affiliation(s)
- K Starosta
- National Superconducting Cyclotron Laboratory, Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
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11
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Campbell CM, Aoi N, Bazin D, Bowen MD, Brown BA, Cook JM, Dinca DC, Gade A, Glasmacher T, Horoi M, Kanno S, Motobayashi T, Mueller WF, Sakurai H, Starosta K, Suzuki H, Takeuchi S, Terry JR, Yoneda K, Zwahlen H. Measurement of excited states in (40)Si and evidence for weakening of the N=28 shell gap. Phys Rev Lett 2006; 97:112501. [PMID: 17025880 DOI: 10.1103/physrevlett.97.112501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2006] [Indexed: 05/12/2023]
Abstract
Excited states in (40)Si have been established by detecting gamma rays coincident with inelastic scattering and nucleon removal reactions on a liquid hydrogen target. The low excitation energy, 986(5) keV, of the 2(1)(+) state provides evidence of a weakening in the N=28 shell closure in a neutron-rich nucleus devoid of deformation-driving proton collectivity.
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Affiliation(s)
- C M Campbell
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
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12
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Gade A, Bazin D, Becerril A, Campbell CM, Cook JM, Dean DJ, Dinca DC, Glasmacher T, Hitt GW, Howard ME, Mueller WF, Olliver H, Terry JR, Yoneda K. Quadrupole deformation of the self-conjugate nucleus 72Kr. Phys Rev Lett 2005; 95:022502. [PMID: 16090679 DOI: 10.1103/physrevlett.95.022502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2005] [Indexed: 05/03/2023]
Abstract
We report on the first determination of the absolute B(E2;0+(1)-->2+(1)) excitation strength in the N=Z nucleus 72Kr. 72Kr is the heaviest N=Z nucleus for which this quantity has been measured and provides a benchmark in a region of the nuclear chart dominated by rapidly changing deformations and shapes mediated by the interplay of strongly oblate and prolate-driving orbitals. The deduced quadrupole deformation strength is in agreement with a variety of self-consistent models that predict an oblate shape for the ground state of 72Kr. Large-scale shell-model Monte Carlo calculations reproduce the experimental B(E2) value and link the result to the occupation of the deformation-driving g9/2 orbit.
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Affiliation(s)
- A Gade
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
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13
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Fridmann J, Wiedenhöver I, Gade A, Baby LT, Bazin D, Brown BA, Campbell CM, Cook JM, Cottle PD, Diffenderfer E, Dinca DC, Glasmacher T, Hansen PG, Kemper KW, Lecouey JL, Mueller WF, Olliver H, Rodriguez-Vieitez E, Terry JR, Tostevin JA, Yoneda K. ‘Magic’ nucleus 42Si. Nature 2005; 435:922-4. [PMID: 15959511 DOI: 10.1038/nature03619] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2005] [Accepted: 03/24/2005] [Indexed: 11/08/2022]
Abstract
Nuclear shell structures--the distribution of the quantum states of individual protons and neutrons--provide one of our most important guides for understanding the stability of atomic nuclei. Nuclei with 'magic numbers' of protons and/or neutrons (corresponding to closed shells of strongly bound nucleons) are particularly stable. Whether the major shell closures and magic numbers change in very neutron-rich nuclei (potentially causing shape deformations) is a fundamental, and at present open, question. A unique opportunity to study these shell effects is offered by the 42Si nucleus, which has 28 neutrons--a magic number in stable nuclei--and 14 protons. This nucleus has a 12-neutron excess over the heaviest stable silicon nuclide, and has only one neutron fewer than the heaviest silicon nuclide observed so far. Here we report measurements of 42Si and two neighbouring nuclei using a technique involving one- and two-nucleon knockout from beams of exotic nuclei. We present strong evidence for a well-developed proton subshell closure at Z = 14 (14 protons), the near degeneracy of two different (s(1/2) and d(3/2)) proton orbits in the vicinity of 42Si, and a nearly spherical shape for 42Si.
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Affiliation(s)
- J Fridmann
- Department of Physics, Florida State University, Tallahassee, Florida 32306-4350, USA
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14
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Gade A, Bazin D, Brown BA, Campbell CM, Church JA, Dinca DC, Enders J, Glasmacher T, Hansen PG, Hu Z, Kemper KW, Mueller WF, Olliver H, Perry BC, Riley LA, Roeder BT, Sherrill BM, Terry JR, Tostevin JA, Yurkewicz KL. Reduced occupancy of the deeply bound 0d(5/2) neutron state in 32Ar. Phys Rev Lett 2004; 93:042501. [PMID: 15323753 DOI: 10.1103/physrevlett.93.042501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2004] [Indexed: 05/24/2023]
Abstract
The 9Be(32Ar, 31Ar)X reaction, leading to the 5/2+ ground state of a nucleus at the proton drip line, has a cross section of 10.4(13) mb at a beam energy of 65.1 MeV/nucleon. This translates into a spectroscopic factor that is only 24(3)% of that predicted by the many-body shell-model theory. We introduce refinements to the eikonal reaction theory used to extract the spectroscopic factor to clarify that this very strong reduction represents an effect of nuclear structure. We suggest that it reflects correlation effects linked to the high neutron separation energy (22.0 MeV) for this state.
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Affiliation(s)
- A Gade
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
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15
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Clement RRC, Bazin D, Benenson W, Brown BA, Cole AL, Cooper MW, DeYoung PA, Estrade A, Famiano MA, Frank NH, Gade A, Glasmacher T, Hosmer PT, Lynch WG, Montes F, Mueller WF, Peaslee GF, Santi P, Schatz H, Sherrill BM, van Goethem MJ, Wallace MS. New approach for measuring properties of rp-process nuclei. Phys Rev Lett 2004; 92:172502. [PMID: 15169141 DOI: 10.1103/physrevlett.92.172502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2003] [Indexed: 05/24/2023]
Abstract
A new experimental approach was developed that can reduce the uncertainties in astrophysical rapid proton capture (rp) process calculations due to nuclear data. This approach utilizes neutron removal from a radioactive ion beam to populate the nuclear states of interest. Excited states were deduced by the gamma-decay spectra measured in a semiconductor Ge-detector array. In the first case studied, 33Ar, excited states were measured with uncertainties of several keV. The 2 orders of magnitude improvement in the uncertainty of the level energies resulted in a 3 orders of magnitude improvement in the uncertainty of the calculated 32Cl(p,gamma)33Ar rate that is critical to the modeling of the rp process. This approach has the potential to measure key properties of almost all interesting nuclei on the rp-process path.
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Affiliation(s)
- R R C Clement
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA.
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16
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Bazin D, Brown BA, Campbell CM, Church JA, Dinca DC, Enders J, Gade A, Glasmacher T, Hansen PG, Mueller WF, Olliver H, Perry BC, Sherrill BM, Terry JR, Tostevin JA. New direct reaction: two-proton knockout from neutron-rich nuclei. Phys Rev Lett 2003; 91:012501. [PMID: 12906536 DOI: 10.1103/physrevlett.91.012501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2003] [Indexed: 05/24/2023]
Abstract
The reaction 9Be(28Mg,26Ne+gamma)X has been studied at 82 MeV/nucleon together with two similar cases, 30Mg and 34Si. Strong evidence that the reactions are direct is offered by the parallel-momentum distributions of the reaction residues and by the inclusive cross sections. The pattern of the partial cross sections for 28Mg suggests the presence of correlations. A preliminary theoretical discussion based on eikonal reaction theory and the many-body shell model is presented. The reaction holds great promise for the study of neutron-rich nuclei.
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Affiliation(s)
- D Bazin
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
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17
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Cottle PD, Hu Z, Pritychenko BV, Church JA, Fauerbach M, Glasmacher T, Ibbotson RW, Kemper KW, Riley LA, Scheit H, Steiner M. 0(+)(gs) --> 2(+)(1) excitations in the mirror nuclei 32Ar and 32Si. Phys Rev Lett 2002; 88:172502. [PMID: 12005747 DOI: 10.1103/physrevlett.88.172502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2002] [Indexed: 05/23/2023]
Abstract
We measured the strength of the 0(+)(gs)-->2(+)(1) excitations in the radioactive mirror nuclei 32Ar and 32Si using the techniques of intermediate-energy Coulomb excitation for 32Ar and inelastic proton scattering in inverse kinematics for 32Si. The 32Ar measurement, taken together with previously existing Coulomb excitation data for 32Si, yields the isoscalar and isovector multipole matrix elements for the 0(+)(1)-->2(+)(1) transition between T = 2 states in the A = 32 system. The proton scattering measurement for 32Si, when combined with the Coulomb excitation data for this nucleus, yields a ratio of neutron and proton matrix elements, M(n)/M(p), for 32Si.
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Affiliation(s)
- P D Cottle
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
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18
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Navin A, Anthony DW, Aumann T, Baumann T, Bazin D, Blumenfeld Y, Brown BA, Glasmacher T, Hansen PG, Ibbotson RW, Lofy PA, Maddalena V, Miller K, Nakamura T, Pritychenko BV, Sherrill BM, Spears E, Steiner M, Tostevin JA, Yurkon J, Wagner A. Direct evidence for the breakdown of the N = 8 shell closure in 12Be. Phys Rev Lett 2000; 85:266-269. [PMID: 10991259 DOI: 10.1103/physrevlett.85.266] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/1999] [Indexed: 05/23/2023]
Abstract
Partial cross sections and corresponding momentum distributions have been studied in the one-neutron knockout reaction ( 12Be,11Be+gamma) on a 9Be target at 78 MeV/nucleon. The resulting spectroscopic factors for the only two bound states of 11Be are 0.42+/-0.06 ( 1/2(+)) and 0.37+/-0.06 ( 1/2(-)), where the errors are experimental only. This result shows that N = 8 is not a good closed shell in the neutron-rich 12Be and that the last neutron pair is two-thirds in the ( 1s(2)+0d(2)) intruder configuration.
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Affiliation(s)
- A Navin
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 and Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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19
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Aumann T, Navin A, Balamuth DP, Bazin D, Blank B, Brown BA, Bush JE, Caggiano JA, Davids B, Glasmacher T, Guimaraes V, Hansen PG, Ibbotson RW, Karnes D, Kolata JJ, Maddalena V, Pritychenko B, Scheit H, Sherrill BM, Tostevin JA. One-neutron knockout from individual single-particle states of 11Be. Phys Rev Lett 2000; 84:35-38. [PMID: 11015828 DOI: 10.1103/physrevlett.84.35] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/1999] [Indexed: 05/23/2023]
Abstract
The structure of the halo nucleus 11Be has been studied using the reaction 9Be(11Be,10Be+gamma)X at 60 MeV/nucleon. The ground state structure of 11Be is determined by comparing the experimental cross sections to a calculation combining spectroscopic factors from the shell model with l-dependent single-particle cross sections obtained in an eikonal model. This experiment shows the dominant 1s single-particle character of the 11Be ground state and indicates a small contribution of 0d admixture in the wave function. After correction for the approximately 22% intensity to excited levels, a clean and precise distribution of parallel momentum for knockout from the 1s halo wave function is obtained for the first time.
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Affiliation(s)
- T Aumann
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 and Gesellschaft fur Schwerionenforschung, Planckstrasse 1, 64291 Darmstadt, Germany
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20
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Scheit H, Glasmacher T, Brown BA, Brown JA, Cottle PD, Hansen PG, Harkewicz R, Hellström M, Ibbotson RW, Jewell JK, Kemper KW, Morrissey DJ, Steiner M, Thirolf P, Thoennessen M. New Region of Deformation: The Neutron-Rich Sulfur Isotopes. Phys Rev Lett 1996; 77:3967-3970. [PMID: 10062354 DOI: 10.1103/physrevlett.77.3967] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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21
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Dempsey JF, Charity RJ, Sobotka LG, Kunde GJ, Gaff S, Gelbke CK, Glasmacher T, Huang MJ, Lemmon RC, Lynch WG, Manduci L, Martin L, Tsang MB, Agnihotri DK, Djerroud B, Schröder WU, Skulski W, Tõke J, Friedman WA. Isospin dependence of intermediate mass fragment production in heavy-ion collisions at E/A=55 MeV. Phys Rev C Nucl Phys 1996; 54:1710-1719. [PMID: 9971518 DOI: 10.1103/physrevc.54.1710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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22
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Kunde GJ, Gaff SJ, Gelbke CK, Glasmacher T, Huang MJ, Lemmon R, Lynch WG, Manduci L, Martin L, Tsang MB, Friedman WA, Dempsey J, Charity RJ, Sobotka LG, Agnihotri DK, Djerroud B, Schröder WU, Skulski W, Tõke J, Wyrozebski K. Multifragment Production in Reactions of 112Sn+112Sn and 124Sn+124Sn at E/A=40 MeV. Phys Rev Lett 1996; 77:2897-2900. [PMID: 10062080 DOI: 10.1103/physrevlett.77.2897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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23
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Popescu R, Gelbke CK, Glasmacher T. Many-body Coulomb perturbation of azimuthal alpha - alpha correlations. Phys Rev C Nucl Phys 1996; 54:796-804. [PMID: 9971404 DOI: 10.1103/physrevc.54.796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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24
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Hamilton TM, Cornell E, Fox D, Lou Y, Huang MJ, Hsi WC, Schwarz C, Williams C, Bowman DR, Dinius J, Gelbke CK, Glasmacher T, Handzy DO, Lisa MA, Lynch WG, Peaslee GF, Phair L, Tsang MB, VanBuren G, Charity RJ, Sobotka LG, Sonzogni AA, Prindle D. Changing source characteristics during multifragment decay. Phys Rev C Nucl Phys 1996; 53:2273-2286. [PMID: 9971206 DOI: 10.1103/physrevc.53.2273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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25
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Mastinu PF, Belkacem M, D'Agostino M, Bruno M, Milazzo PM, Vannini G, Bowman DR, Colonna N, Dinius JD, Ferrero A, Fiandri ML, Gelbke CK, Glasmacher T, Gramegna F, Handzy DO, Horn D, Hsi WC, Huang M, Iori I, Kunde GJ, Lisa MA, Lynch WG, Margagliotti GV, Montoya CP, Moroni A, Peaslee GF, Petruzzelli F, Rui R, Schwarz C, Tsang MB, Williams C, Latora V, Bonasera A. Circumstantial evidence for critical behavior in peripheral Au+Au collisions at 35 MeV/nucleon. Phys Rev Lett 1996; 76:2646-2649. [PMID: 10060753 DOI: 10.1103/physrevlett.76.2646] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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26
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Ferrero A, Iori I, Moroni A, Petruzzelli F, Scardaoni R, Moretto LG, Bowman DR, Bruno M, Buttazzo P, Celano L, Colonna N, D'Agostino M, Dinius JD, Fiandri ML, Fuschini E, Gelbke CK, Glasmacher T, Gramegna F, Handzy DO, Horn D, Hsi WC, Huang M, Kunde GJ, Lisa MA, Lynch WG, Mastinu PF, Milazzo PM, Margagliotti GV, Montoya CP, Peaslee GF, Phair L, Rui R, Schwarz C, Tsang MB, Vannini G, Williams C. Reducibility and a new entropic term in multifragment charge distributions. Phys Rev C Nucl Phys 1996; 53:R5-R8. [PMID: 9970970 DOI: 10.1103/physrevc.53.r5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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27
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D'Agostino M, Kunde GJ, Milazzo PM, Dinius JD, Bruno M, Colonna N, Fiandri ML, Gelbke CK, Glasmacher T, Gramegna F, Handzy DO, Hsi WC, Huang M, Lisa MA, Lynch WG, Mastinu PF, Montoya CP, Moroni A, Peaslee GF, Phair L, Rui R, Schwarz C, Tsang MB, Vannini G, Williams C. Multifragmentation in E/A=35m MeV collisions: Evidence for a Coulomb driven breakup? Phys Rev Lett 1995; 75:4373-4376. [PMID: 10059892 DOI: 10.1103/physrevlett.75.4373] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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28
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Charity RJ, Sobotka LG, Robertson NJ, Sarantites DG, Dinius J, Gelbke CK, Glasmacher T, Handzy DO, Hsi WC, Huang MJ, Lynch WG, Montoya CP, Peaslee GF, Schwarz C, Tsang MB. Prompt and sequential decay processes in the fragmentation of 40 MeV/nucleon 20Ne projectiles. Phys Rev C Nucl Phys 1995; 52:3126-3150. [PMID: 9970860 DOI: 10.1103/physrevc.52.3126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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29
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Gaff SJ, Gelbke CK, Bauer W, Daffin FC, Glasmacher T, Gualtieri E, Haglin K, Handzy DO, Hannuschke S, Huang MJ, Kunde GJ, Lacey R, Lynch WG, Martin L, Montoya CP, Pak R, Pratt S, Stone N, Tsang MB, Westfall GD, Yee J. Two-proton correlations for 16O + 197Au collisions at E/A=200 MeV. Phys Rev C Nucl Phys 1995; 52:2782-2784. [PMID: 9970809 DOI: 10.1103/physrevc.52.2782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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30
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Handzy DO, Bauer W, Daffin FC, Gaff SJ, Gelbke CK, Glasmacher T, Gualtieri E, Hannuschke S, Huang MJ, Kunde GJ, Lacey R, Li T, Lisa MA, Llope WJ, Lynch WG, Martin L, Montoya CP, Pak R, Peaslee GF, Pratt S, Schwarz C, Stone N, Tsang MB, Westfall GD, Yee J, Yennello SJ. Understanding proton emission in central heavy-ion collisions. Phys Rev Lett 1995; 75:2916-2919. [PMID: 10059442 DOI: 10.1103/physrevlett.75.2916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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31
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Cornell E, Hamilton TM, Fox D, Lou Y, Huang MJ, Hsi WC, Schwarz C, Williams C, Bowman DR, Dinius J, Gelbke CK, Glasmacher T, Handzy DO, Lisa MA, Lynch WG, Peaslee GF, Phair L, Tsang MB, VanBuren G, Charity RJ, Sobotka LG, Friedman WA. Assessing the Evolutionary Nature of Multifragment Decay. Phys Rev Lett 1995; 75:1475-1478. [PMID: 10060307 DOI: 10.1103/physrevlett.75.1475] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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32
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Bowman DR, Colonna N, Friedman WA, Celano L, D'Agostino M, Dinius JD, Ferrero A, Gelbke CK, Glasmacher T, Handzy DO, Horn D, Hsi WC, Huang M, Iori I, Lisa MA, Lynch WG, Margagliotti GV, Milazzo PM, Montoya CP, Moroni A, Peaslee GF, Phair L, Petruzzelli F, Scardaoni R, Schwarz C, Tsang MB, Williams C. Space-time characteristics of fragment emission in the E/A=30 MeV 129Xe+natCu reaction. Phys Rev C Nucl Phys 1995; 52:818-830. [PMID: 9970573 DOI: 10.1103/physrevc.52.818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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33
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Glasmacher T, Phair L, Bowman DR, Gelbke CK, Gong WG, Kim YD, Lisa MA, Lynch WG, Peaslee GF, Tsang MB, Zhu F. Space-time ambiguity of two- and three-fragment reduced velocity correlation functions. Phys Rev C Nucl Phys 1995; 51:3489-3491. [PMID: 9970456 DOI: 10.1103/physrevc.51.3489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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34
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Hsi WC, Kunde GJ, Pochodzalla J, Lynch WG, Tsang MB, Begemann-Blaich ML, Bowman DR, Charity RJ, Cosmo F, Ferrero A, Gelbke CK, Glasmacher T, Hofmann T, Imme G, Iori I, Hubele J, Kempter J, Kreutz P, Kunze WD, Lindenstruth V, Lisa MA, Lynen U, Mang M, Moroni A, Müller WF, Neumann M, Ocker B, Ogilvie CA, Peaslee GF, Raciti G, Rosenberger F, Sann H, Scardaoni R, Schüttauf A, Schwarz C, Seidel W, Serfling V, Sobotka LG, Stuttge L, Tomasevic S, Trautmann W, Tucholski A, Williams C, Wörner A, Zwieglinski B. Collective expansion in central Au+Au collisions. Phys Rev Lett 1994; 73:3367-3370. [PMID: 10057363 DOI: 10.1103/physrevlett.73.3367] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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35
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Fox D, Glasmacher T, Phair L, Bowman DR, Carlin N, Gelbke CK, Gong WG, Kim YD, Lisa MA, Lynch WG, Peaslee GF, Tsang MB, Zhu F. Time scale for multifragmentation in intermediate energy heavy-ion reactions. Phys Rev C Nucl Phys 1994; 50:2424-2437. [PMID: 9969931 DOI: 10.1103/physrevc.50.2424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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36
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Glasmacher T, Phair L, Bowman DR, Gelbke CK, Gong WG, Kim YD, Lisa MA, Lynch WG, Peaslee GF, Tsang MB, Zhu F. Two-fragment correlation functions with directional cuts for central 36Ar+197Au collisions at E/A=50 MeV. Phys Rev C Nucl Phys 1994; 50:952-960. [PMID: 9969738 DOI: 10.1103/physrevc.50.952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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37
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Peaslee GF, Tsang MB, Schwarz C, Huang MJ, Huang WS, Hsi WC, Williams C, Bauer W, Bowman DR, Chartier M, Dinius J, Gelbke CK, Glasmacher T, Handzy DO, Lisa MA, Lynch WG, Mader CM, Phair L, Lemaire MC, Souza SR, Charity RJ, Sobotka LG, Kunde GJ, Lynen U, Pochodzalla J, Sann H, Trautmann W, Fox D, Peilert G, Friedman WA, Carlin N. Energy dependence of multifragmentation in 84Kr+197Au collisions. Phys Rev C Nucl Phys 1994; 49:R2271-R2275. [PMID: 9969552 DOI: 10.1103/physrevc.49.r2271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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38
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Holcomb JW, Döring J, Glasmacher T, Johns GD, Johnson TD, Riley MA, Womble PC, Tabor SL. Transition strengths in 79Rb. Phys Rev C Nucl Phys 1993; 48:1020-1033. [PMID: 9968932 DOI: 10.1103/physrevc.48.1020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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39
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Cottle PD, Glasmacher T, Johnson JL, Kemper KW. Electron conversion coefficients in 127Ba and 130La. Phys Rev C Nucl Phys 1993; 48:136-139. [PMID: 9968802 DOI: 10.1103/physrevc.48.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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40
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Glasmacher T, Caussyn DD, Cottle PD, Holcomb JW, Johnson TD, Kemper KW, Kennedy MA, Womble PC. Evidence for single particle structure of high spin states in 144Pm and 145Pm. Phys Rev C Nucl Phys 1993; 47:2586-2597. [PMID: 9968732 DOI: 10.1103/physrevc.47.2586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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41
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Womble PC, Döring J, Glasmacher T, Holcomb JW, Johns GD, Johnson TD, Petters TJ, Riley MA, Wood VA, Tabor SL, Semmes P. Nuclear structure of odd-odd 82Y. Phys Rev C Nucl Phys 1993; 47:2546-2559. [PMID: 9968728 DOI: 10.1103/physrevc.47.2546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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42
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Johnson TD, Glasmacher T, Holcomb JW, Womble PC, Tabor SL, Nazarewicz W. Rotational band structure in 75Se. Phys Rev C Nucl Phys 1992; 46:516-531. [PMID: 9968146 DOI: 10.1103/physrevc.46.516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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43
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Cottle PD, Glasmacher T, Kemper KW. Spin and parity measurements in 128,129La. Phys Rev C Nucl Phys 1992; 45:2733-2739. [PMID: 9968038 DOI: 10.1103/physrevc.45.2733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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44
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Glasmacher T, Caussyn DD, Cottle PD, Johnson TD, Kemper KW, Womble PC. Evidence for weak coupling in 145Pm. Phys Rev C Nucl Phys 1992; 45:1619-1627. [PMID: 9967914 DOI: 10.1103/physrevc.45.1619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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45
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Caussyn DD, Aziz SM, Cottle PD, Glasmacher T, Kemper KW. Conversion electron spectroscopy of high spin states in 143,144Nd. Phys Rev C Nucl Phys 1991; 43:2098-2102. [PMID: 9967262 DOI: 10.1103/physrevc.43.2098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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