Intruder band mixing in an ab initio description of 12Be

McCoy, Anna E.; Caprio, Mark A.; Maris, Pieter; Fasano, Patrick J.

doi:10.1016/j.physletb.2024.138870

Intruder band mixing in an ab initio description of ¹²Be

Journal Article · Mon Jul 15 00:00:00 EDT 2024 · Physics Letters. B

DOI:https://doi.org/10.1016/j.physletb.2024.138870· OSTI ID:2438131

^[1]; ^[2]; ^[3]; ^[4]

Argonne National Laboratory (ANL), Argonne, IL (United States); Univ. of Washington, Seattle, WA (United States); Michigan State Univ., East Lansing, MI (United States); Washington Univ., St. Louis, MO (United States)
University of Notre Dame, IN (United States)
Iowa State Univ., Ames, IA (United States)
Argonne National Laboratory (ANL), Argonne, IL (United States); University of Notre Dame, IN (United States)

The spectrum of ¹²Be exhibits exotic features, e.g., an intruder ground state and shape coexistence, normally associated with the breakdown of a shell closure. While previous phenomenological treatments indicated the ground state has substantial contributions from intruder configurations, it is only with advances in computational abilities and improved interactions that this intruder mixing is observed in ab initio no-core shell model (NCSM) predictions. In this work, we extract electromagnetic observables and symmetry decompositions from the NCSM wave functions to demonstrate that the low-lying positive parity spectrum can be explained in terms of mixing of rotational bands with very different intrinsic structure coexisting within the low-lying spectrum. These observed bands exhibit an approximate SU(3) symmetry and are qualitatively consistent with Elliott model predictions.

View Journal Article

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR). Scientific Discovery through Advanced Computing (SciDAC); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)

Grant/Contract Number:: AC02-05CH11231; AC02-06CH11357; FG02-00ER41132; FG02-95ER40934; SC0013617; SC0021027; SC0023495

OSTI ID:: 2438131

Alternate ID(s):: OSTI ID: 2570638

Journal Information:: Physics Letters. B, Journal Name: Physics Letters. B Vol. 856; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (71)

α + 8 He Elastic Scattering with the Generator-Coordinate Method Baye, D.; Descouvemont, P.; Kamouni, R. Few-Body Systems, Vol. 29, Issue 1-3 https://doi.org/10.1007/s006010070013	journal	November 2000
On the shape of deformed nuclei Rosensteel, G.; Rowe, D. J. Annals of Physics, Vol. 104, Issue 1 https://doi.org/10.1016/0003-4916(77)90048-3	journal	March 1977
Coexistence in even-mass nuclei Wood, J. L.; Heyde, K.; Nazarewicz, W. Physics Reports, Vol. 215, Issue 3-4 https://doi.org/10.1016/0370-1573(92)90095-H	journal	June 1992
Measurement of interaction cross sections using isotope beams of Be and B and isospin dependence of the nuclear radii Tanihata, I.; Kobayashi, T.; Yamakawa, O. Physics Letters B, Vol. 206, Issue 4 https://doi.org/10.1016/0370-2693(88)90702-2	journal	June 1988
Quadrupole deformation of 12Be studied by proton inelastic scattering Iwasaki, H.; Motobayashi, T.; Akiyoshi, H. Physics Letters B, Vol. 481, Issue 1 https://doi.org/10.1016/S0370-2693(00)00428-7	journal	May 2000
Low-lying intruder 1− state in 12Be and the melting of the N=8 shell closure Iwasaki, H.; Motobayashi, T.; Akiyoshi, H. Physics Letters B, Vol. 491, Issue 1-2 https://doi.org/10.1016/S0370-2693(00)01017-0	journal	October 2000
12Be molecular states in a microscopic cluster model Descouvemont, P.; Baye, D. Physics Letters B, Vol. 505, Issue 1-4 https://doi.org/10.1016/S0370-2693(01)00349-5	journal	April 2001
Isomeric 0+ state in 12Be Shimoura, S.; Saito, A.; Minemura, T. Physics Letters B, Vol. 560, Issue 1-2 https://doi.org/10.1016/S0370-2693(03)00341-1	journal	May 2003
Core excitation in 12Be Nunes, F. M.; Thompson, I. J.; Tostevin, J. A. Nuclear Physics A, Vol. 703, Issue 3-4 https://doi.org/10.1016/S0375-9474(01)01667-0	journal	June 2002
Electric monopole transitions from low energy excitations in nuclei Wood, J. L.; Zganjar, E. F.; De Coster, C. Nuclear Physics A, Vol. 651, Issue 4 https://doi.org/10.1016/S0375-9474(99)00143-8	journal	May 1999
Efficacy of the SU(3) scheme for ab initio large-scale calculations beyond the lightest nuclei Dytrych, T.; Maris, P.; Launey, K. D. Computer Physics Communications, Vol. 207 https://doi.org/10.1016/j.cpc.2016.06.006	journal	October 2016
Structure of neutron-rich beryllium and carbon isotopes Bohlen, H. G.; Kalpakchieva, R.; von Oertzen, W. Nuclear Physics A, Vol. 738 https://doi.org/10.1016/j.nuclphysa.2004.04.056	journal	June 2004
Energy levels of light nuclei Tilley, D. R.; Kelley, J. H.; Godwin, J. L. Nuclear Physics A, Vol. 745, Issue 3-4 https://doi.org/10.1016/j.nuclphysa.2004.09.059	journal	December 2004
Microscopic investigation of the 12Be spectroscopy Dufour, M.; Descouvemont, P.; Nowacki, F. Nuclear Physics A, Vol. 836, Issue 3-4 https://doi.org/10.1016/j.nuclphysa.2010.02.002	journal	May 2010
Nuclear-matter density distribution in the neutron-rich nuclei 12,14Be from proton elastic scattering in inverse kinematics Ilieva, S.; Aksouh, F.; Alkhazov, G. D. Nuclear Physics A, Vol. 875 https://doi.org/10.1016/j.nuclphysa.2011.11.010	journal	February 2012
Energy levels of light nuclei A= 12 Kelley, J. H.; Purcell, J. E.; Sheu, C. G. Nuclear Physics A, Vol. 968 https://doi.org/10.1016/j.nuclphysa.2017.07.015	journal	December 2017
Lifetime of the isomeric 02+ state in 12Be Shimoura, S.; Ota, S.; Demichi, K. Physics Letters B, Vol. 654, Issue 3-4 https://doi.org/10.1016/j.physletb.2007.08.053	journal	October 2007
Isomeric 0− halo-states in 12Be and 11Li Romero-Redondo, C.; Garrido, E.; Fedorov, D. V. Physics Letters B, Vol. 660, Issue 1-2 https://doi.org/10.1016/j.physletb.2007.12.014	journal	February 2008
First lifetime measurement of 21+ state in 12Be Imai, N.; Aoi, N.; Ong, H. J. Physics Letters B, Vol. 673, Issue 3 https://doi.org/10.1016/j.physletb.2009.02.039	journal	March 2009
Structure of states in 12Be via the 11Be(d,p) reaction Kanungo, R.; Gallant, A. T.; Uchida, M. Physics Letters B, Vol. 682, Issue 4-5 https://doi.org/10.1016/j.physletb.2009.11.025	journal	January 2010
N3LO NN interaction adjusted to light nuclei in ab exitu approach Shirokov, A. M.; Shin, I. J.; Kim, Y. Physics Letters B, Vol. 761 https://doi.org/10.1016/j.physletb.2016.08.006	journal	October 2016
Enhanced collectivity in 12 Be Morse, C.; McCutchan, E. A.; Iwasaki, H. Physics Letters B, Vol. 780 https://doi.org/10.1016/j.physletb.2018.03.004	journal	May 2018
A new measurement of the intruder configuration in 12 Be Chen, J.; Lou, J. L.; Ye, Y. L. Physics Letters B, Vol. 781 https://doi.org/10.1016/j.physletb.2018.04.016	journal	June 2018
Nuclear magic numbers: New features far from stability Sorlin, O.; Porquet, M. -G. Progress in Particle and Nuclear Physics, Vol. 61, Issue 2 https://doi.org/10.1016/j.ppnp.2008.05.001	journal	October 2008
Symmetry-adapted no-core shell model applications for light nuclei with QCD-inspired interactions Draayer, J. P.; Dytrych, T.; Launey, K. D. Progress in Particle and Nuclear Physics, Vol. 67, Issue 2 https://doi.org/10.1016/j.ppnp.2012.01.020	journal	April 2012
Ab initio no core shell model Barrett, Bruce R.; Navrátil, Petr; Vary, James P. Progress in Particle and Nuclear Physics, Vol. 69 https://doi.org/10.1016/j.ppnp.2012.10.003	journal	March 2013
Symmetry-guided large-scale shell-model theory Launey, Kristina D.; Dytrych, Tomas; Draayer, Jerry P. Progress in Particle and Nuclear Physics, Vol. 89 https://doi.org/10.1016/j.ppnp.2016.02.001	journal	July 2016
The neutron-rich edge of the nuclear landscape: Experiment and theory. Nowacki, Frédéric; Obertelli, Alexandre; Poves, Alfredo Progress in Particle and Nuclear Physics, Vol. 120 https://doi.org/10.1016/j.ppnp.2021.103866	journal	September 2021
T=2 states of the A=12 nuclei Barker, F. C. Journal of Physics G: Nuclear Physics, Vol. 2, Issue 4 https://doi.org/10.1088/0305-4616/2/4/001	journal	April 1976
Properties of ¹² Be and ¹¹ Be in terms of single-particle motion in deformed potential Hamamoto, I.; Shimoura, S. Journal of Physics G: Nuclear and Particle Physics, Vol. 34, Issue 12 https://doi.org/10.1088/0954-3899/34/12/015	journal	November 2007
Intrinsic operators for the translationally-invariant many-body problem Caprio, Mark A.; McCoy, Anna E.; Fasano, Patrick J. Journal of Physics G: Nuclear and Particle Physics, Vol. 47, Issue 12 https://doi.org/10.1088/1361-6471/ab9d38	journal	November 2020
Rotational bands beyond the Elliott model Zbikowski, Ryan; Johnson, Calvin W.; McCoy, Anna E. Journal of Physics G: Nuclear and Particle Physics, Vol. 48, Issue 7 https://doi.org/10.1088/1361-6471/abdd8e	journal	May 2021
Ab initio calculations for Be-isotopes with JISP16 Maris, P. Journal of Physics: Conference Series, Vol. 445 https://doi.org/10.1088/1742-6596/445/1/012035	journal	July 2013
Microscopic calculation of inelastic proton scattering off O18, Be10, Be12, and C16 to study neutron excitation in neutron-rich nuclei Kanada-En'yo, Yoshiko; Ogata, Kazuyuki Physical Review C, Vol. 100, Issue 6 https://doi.org/10.1103/PhysRevC.100.064616	journal	December 2019
New investigation of low-lying states in ¹²Be via a ²H (¹³B, ³He) reaction Liu, W.; Lou, J. L.; Ye, Y. L. Physical Review C, Vol. 105, Issue 3 https://doi.org/10.1103/PhysRevC.105.034613	journal	March 2022
Mass and excited states of Be 12 Alburger, D. E.; Mordechai, S.; Fortune, H. T. Physical Review C, Vol. 18, Issue 6 https://doi.org/10.1103/PhysRevC.18.2727	journal	December 1978
Monopole strength as a measure of nuclear shape mixing Heyde, K.; Meyer, R. A. Physical Review C, Vol. 37, Issue 5 https://doi.org/10.1103/PhysRevC.37.2170	journal	May 1988
Mass systematics for A =29–44 nuclei: The deformed A ∼32 region Warburton, E. K.; Becker, J. A.; Brown, B. A. Physical Review C, Vol. 41, Issue 3 https://doi.org/10.1103/PhysRevC.41.1147	journal	March 1990
Momentum distributions for Be 1 2 , 1 4 fragmentation Zahar, M.; Belbot, M.; Kolata, J. J. Physical Review C, Vol. 48, Issue 4 https://doi.org/10.1103/PhysRevC.48.R1484	journal	October 1993
( sd ) 2 states in Be 12 Fortune, H. T.; Liu, G. -B.; Alburger, D. E. Physical Review C, Vol. 50, Issue 3 https://doi.org/10.1103/PhysRevC.50.1355	journal	September 1994
Structure and reactions of the Be 1 2 , 1 4 nuclei Thompson, I. J.; Zhukov, M. V. Physical Review C, Vol. 53, Issue 2 https://doi.org/10.1103/PhysRevC.53.708	journal	February 1996
Gamow-Teller transitions from 11 Li and 12 Be Suzuki, Toshio; Otsuka, Takaharu Physical Review C, Vol. 56, Issue 2 https://doi.org/10.1103/PhysRevC.56.847	journal	August 1997
Structure of 12 Be and 12 O ground states Sherr, R.; Fortune, H. T. Physical Review C, Vol. 60, Issue 6 https://doi.org/10.1103/PhysRevC.60.064323	journal	November 1999
Important role of the spin-orbit interaction in forming the 1 / 2 + orbital structure in Be isotopes Itagaki, N.; Okabe, S.; Ikeda, K. Physical Review C, Vol. 62, Issue 3 https://doi.org/10.1103/PhysRevC.62.034301	journal	July 2000
SU(3) symmetry breaking in lower fp -shell nuclei Gueorguiev, V. G.; Draayer, J. P.; Johnson, C. W. Physical Review C, Vol. 63, Issue 1 https://doi.org/10.1103/PhysRevC.63.014318	journal	December 2000
Parity inversion and breakdown of shell closure in Be isotopes Gori, G.; Barranco, F.; Vigezzi, E. Physical Review C, Vol. 69, Issue 4 https://doi.org/10.1103/PhysRevC.69.041302	journal	April 2004
Dominant role of symplectic symmetry in ab initio no-core shell model results for light nuclei Dytrych, T.; Sviratcheva, K. D.; Bahri, C. Physical Review C, Vol. 76, Issue 1 https://doi.org/10.1103/PhysRevC.76.014315	journal	July 2007
Three-body structure of low-lying Be 12 states Romero-Redondo, C.; Garrido, E.; Fedorov, D. V. Physical Review C, Vol. 77, Issue 5 https://doi.org/10.1103/PhysRevC.77.054313	journal	May 2008
Neutron knockout of Be 12 populating neutron-unbound states in Be 11 Peters, W. A.; Baumann, T.; Brown, B. A. Physical Review C, Vol. 83, Issue 5 https://doi.org/10.1103/PhysRevC.83.057304	journal	May 2011
Cluster correlations for low-lying intruder states of12Be Ito, M.; Itagaki, N.; Ikeda, K. Physical Review C, Vol. 85, Issue 1 https://doi.org/10.1103/PhysRevC.85.014302	journal	January 2012
Experimental study of bound states in 12 Be through low-energy 11 Be ( d , p ) -transfer reactions Johansen, J. G.; Bildstein, V.; Borge, M. J. G. Physical Review C, Vol. 88, Issue 4 https://doi.org/10.1103/PhysRevC.88.044619	journal	October 2013
Emergence of rotational bands in ab initio no-core configuration interaction calculations of the Be isotopes Maris, P.; Caprio, M. A.; Vary, J. P. Physical Review C, Vol. 91, Issue 1 https://doi.org/10.1103/PhysRevC.91.014310	journal	January 2015
Spin-orbit decomposition of ab initio nuclear wave functions Johnson, Calvin W. Physical Review C, Vol. 91, Issue 3 https://doi.org/10.1103/PhysRevC.91.034313	journal	March 2015
Quasidynamical symmetries in the backbending of chromium isotopes Herrera, Raúl A.; Johnson, Calvin W. Physical Review C, Vol. 95, Issue 2 https://doi.org/10.1103/PhysRevC.95.024303	journal	February 2017
Coexistence of Covalent Superdeformation and Molecular Resonances in an Unbound Region of Be 12 Ito, M.; Itagaki, N.; Sakurai, H. Physical Review Letters, Vol. 100, Issue 18 https://doi.org/10.1103/PhysRevLett.100.182502	journal	May 2008
Probing Configuration Mixing in Be 12 with Gamow-Teller Transition Strengths Meharchand, R.; Zegers, R. G. T.; Brown, B. A. Physical Review Letters, Vol. 108, Issue 12 https://doi.org/10.1103/PhysRevLett.108.122501	journal	March 2012
Nuclear Charge Radius of Be 12 Krieger, A.; Blaum, K.; Bissell, M. L. Physical Review Letters, Vol. 108, Issue 14 https://doi.org/10.1103/PhysRevLett.108.142501	journal	April 2012
Collective Modes in Light Nuclei from First Principles Dytrych, T.; Launey, K. D.; Draayer, J. P. Physical Review Letters, Vol. 111, Issue 25 https://doi.org/10.1103/PhysRevLett.111.252501	journal	December 2013
Physics of Nuclei: Key Role of an Emergent Symmetry Dytrych, T.; Launey, K. D.; Draayer, J. P. Physical Review Letters, Vol. 124, Issue 4 https://doi.org/10.1103/PhysRevLett.124.042501	journal	January 2020
Emergent Sp ( 3 , R ) Dynamical Symmetry in the Nuclear Many-Body System from an Ab Initio Description McCoy, Anna E.; Caprio, Mark A.; Dytrych, Tomáš Physical Review Letters, Vol. 125, Issue 10 https://doi.org/10.1103/PhysRevLett.125.102505	journal	September 2020
Exotic Molecular States in 12 Be Freer, M.; Angélique, J. C.; Axelsson, L. Physical Review Letters, Vol. 82, Issue 7 https://doi.org/10.1103/PhysRevLett.82.1383	journal	February 1999
Direct Evidence for the Breakdown of the N = 8 Shell Closure in B 12 e Navin, A.; Anthony, D. W.; Aumann, T. Physical Review Letters, Vol. 85, Issue 2 https://doi.org/10.1103/PhysRevLett.85.266	journal	July 2000
Structure of Be 12 : Intruder d -Wave Strength at N = 8 Pain, S. D.; Catford, W. N.; Orr, N. A. Physical Review Letters, Vol. 96, Issue 3 https://doi.org/10.1103/PhysRevLett.96.032502	journal	January 2006
Evidence for Symplectic Symmetry in Ab Initio No-Core Shell Model Results for Light Nuclei Dytrych, Tomáš; Sviratcheva, Kristina D.; Bahri, Chairul Physical Review Letters, Vol. 98, Issue 16 https://doi.org/10.1103/PhysRevLett.98.162503	journal	April 2007
Shape coexistence in atomic nuclei Heyde, Kris; Wood, John L. Reviews of Modern Physics, Vol. 83, Issue 4 https://doi.org/10.1103/RevModPhys.83.1467	journal	November 2011
A High Performance Block Eigensolver for Nuclear Configuration Interaction Calculations Aktulga, Hasan Metin; Afibuzzaman, Md.; Williams, Samuel IEEE Transactions on Parallel and Distributed Systems, Vol. 28, Issue 6 https://doi.org/10.1109/TPDS.2016.2630699	journal	June 2017
Probing ab initio emergence of nuclear rotation Caprio, Mark A.; Fasano, Patrick J.; Maris, Pieter The European Physical Journal A, Vol. 56, Issue 4 https://doi.org/10.1140/epja/s10050-020-00112-0	journal	April 2020
Emergent symplectic symmetry in atomic nuclei: Ab initio symmetry-adapted no-core shell model Launey, Kristina D.; Dytrych, Tomáš; Sargsyan, Grigor H. The European Physical Journal Special Topics, Vol. 229, Issue 14-15 https://doi.org/10.1140/epjst/e2020-000178-3	journal	October 2020
BAND STRUCTURES IN ¹² Be : EXPERIMENTAL RESULTS Bohlen, H. G.; Von Oertzen, W.; Kokalova, Tz. International Journal of Modern Physics E, Vol. 17, Issue 10 https://doi.org/10.1142/S0218301308011100	journal	November 2008
Structure of Light Unstable Nuclei Studied with Antisymmetrized Molecular Dynamics Kanada-En'yo, Yoshiko; Horiuchi, Hisashi Progress of Theoretical Physics Supplement, Vol. 142 https://doi.org/10.1143/PTPS.142.205	journal	January 2001
Symmetry and Shape Coexistence in 10Be Caprio, M. A. Bulgarian Journal of Physics, Vol. 49, Issue 1 https://doi.org/10.55318/bgjp.2022.49.1.057	journal	February 2022

Similar Records

Emergent Sp(3,$\mathbb{R}$) Dynamical Symmetry in the Nuclear Many-Body System from an Ab Initio Description

Journal Article · Wed Sep 02 20:00:00 EDT 2020 · Physical Review Letters · OSTI ID:1800837

Coexisting intruder bands in /sup 83/Se and evidence for the role of proton subshell closure in inhibiting formation of odd-neutron intruder bands

Journal Article · Thu Dec 31 23:00:00 EST 1981 · Phys. Rev. C; (United States) · OSTI ID:5754836

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Intruder band mixing in an ab initio description of 12Be

Citation Formats

References (71)

Similar Records

Related Subjects

Intruder band mixing in an ab initio description of ¹²Be