Evolution of single-particle structure near the N = 20 island of inversion

MacGregor, P. T.; Sharp, D. K.; Freeman, S. J.; Hoffman, C. R.; Kay, B. P.; Tang, T. L.; Gaffney, L. P.; Baader, E. F.; Borge, M. J. G.; Butler, P. A.; Catford, W. N.; Cropper, B. D.; de Angelis, G.; Konki, J.; Kröll, Th.; Labiche, M.; Lazarus, I. H.; Lubna, R. S.; Martel, I.; McNeel, D. G.; Page, R. D.; Poleshchuk, O.; Raabe, R.; Recchia, F.; Yang, J.

doi:10.1103/PhysRevC.104.L051301

Title: Evolution of single-particle structure near the $N = 20$ island of inversion

Abstract

The single-particle properties of ²⁹Mg have been investigated via a measurement of the ²⁸Mg(d,p)²⁹Mg reaction, in inverse kinematics, using the ISOLDE Solenoidal Spectrometer. The negative-parity intruder states from the fp shell have been identified and used to benchmark modern shell-model calculations. The systematic data on the single-particle centroids along the N = 17 isotones show good agreement with shell-model predictions in describing the observed trends from stability toward ²⁵O. However, there is also evidence that the effect of the finite geometry of the nuclear potential is playing a role on the behavior of the p orbitals near the particle-emission threshold.

Publication Date:: 2021-11-08

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1829331

Alternate Identifier(s):: OSTI ID: 1839903

Grant/Contract Number:: SC-0009883; AC02-06CH11357; SC-0014552

Resource Type:: Published Article

Journal Name:: Physical Review C

Additional Journal Information:: Journal Name: Physical Review C Journal Volume: 104 Journal Issue: 5; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Direct reactions; Nuclear binding; Nuclear forces; Nuclear structure & decays; Shell model; Transfer reactions; 39 ≤ A ≤ 58

Citation Formats


                    MacGregor, P. T., Sharp, D. K., Freeman, S. J., Hoffman, C. R., Kay, B. P., Tang, T. L., Gaffney, L. P., Baader, E. F., Borge, M. J. G., Butler, P. A., Catford, W. N., Cropper, B. D., de Angelis, G., Konki, J., Kröll, Th., Labiche, M., Lazarus, I. H., Lubna, R. S., Martel, I., McNeel, D. G., Page, R. D., Poleshchuk, O., Raabe, R., Recchia, F., and Yang, J. Evolution of single-particle structure near the N = 20 island of inversion.  United States: N. p., 2021. 
Web.  doi:10.1103/PhysRevC.104.L051301.

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                    MacGregor, P. T., Sharp, D. K., Freeman, S. J., Hoffman, C. R., Kay, B. P., Tang, T. L., Gaffney, L. P., Baader, E. F., Borge, M. J. G., Butler, P. A., Catford, W. N., Cropper, B. D., de Angelis, G., Konki, J., Kröll, Th., Labiche, M., Lazarus, I. H., Lubna, R. S., Martel, I., McNeel, D. G., Page, R. D., Poleshchuk, O., Raabe, R., Recchia, F., & Yang, J. Evolution of single-particle structure near the N = 20 island of inversion.  United States.  https://doi.org/10.1103/PhysRevC.104.L051301

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                    MacGregor, P. T., Sharp, D. K., Freeman, S. J., Hoffman, C. R., Kay, B. P., Tang, T. L., Gaffney, L. P., Baader, E. F., Borge, M. J. G., Butler, P. A., Catford, W. N., Cropper, B. D., de Angelis, G., Konki, J., Kröll, Th., Labiche, M., Lazarus, I. H., Lubna, R. S., Martel, I., McNeel, D. G., Page, R. D., Poleshchuk, O., Raabe, R., Recchia, F., and Yang, J. Mon .  
"Evolution of single-particle structure near the N = 20 island of inversion".  United States.  https://doi.org/10.1103/PhysRevC.104.L051301.

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@article{osti_1829331,

  title        = {Evolution of single-particle structure near the N = 20 island of inversion},

  author       = {MacGregor, P. T. and Sharp, D. K. and Freeman, S. J. and Hoffman, C. R. and Kay, B. P. and Tang, T. L. and Gaffney, L. P. and Baader, E. F. and Borge, M. J. G. and Butler, P. A. and Catford, W. N. and Cropper, B. D. and de Angelis, G. and Konki, J. and Kröll, Th. and Labiche, M. and Lazarus, I. H. and Lubna, R. S. and Martel, I. and McNeel, D. G. and Page, R. D. and Poleshchuk, O. and Raabe, R. and Recchia, F. and Yang, J.},

  abstractNote = {The single-particle properties of 29Mg have been investigated via a measurement of the 28Mg(d,p)29Mg reaction, in inverse kinematics, using the ISOLDE Solenoidal Spectrometer. The negative-parity intruder states from the fp shell have been identified and used to benchmark modern shell-model calculations. The systematic data on the single-particle centroids along the N = 17 isotones show good agreement with shell-model predictions in describing the observed trends from stability toward 25O. However, there is also evidence that the effect of the finite geometry of the nuclear potential is playing a role on the behavior of the p orbitals near the particle-emission threshold.},

  doi          = {10.1103/PhysRevC.104.L051301},

  journal      = {Physical Review C},

  number       = 5,

  volume       = 104,

  place        = {United States},

  year         = {2021},

  month        = {11}

}

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Title: Evolution of single-particle structure near the N = 20 island of inversion

Abstract

Citation Formats

Single-neutron knockout from intermediate energy beams of Mg 30 , 32 : Mapping the transition into the “island of inversion” journal, January 2008

Unexpected doubly magic nucleus journal, June 2009

Nuclear ground-state spins and magnetic moments of Mg 27 , Mg 29 , and Mg 31 journal, March 2008

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The role of shell evolution in shape coexistence journal, January 2016

Low-lying neutron f p -shell intruder states in 27 Ne journal, January 2012

Nuclear magic numbers: New features far from stability journal, October 2008

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Isobaric analog resonances of Mg 31 and the border of the island of inversion journal, July 2014

Stripping Reactions and the Structure of Light and Intermediate Nuclei journal, July 1960

Gamow-Teller beta decay of Na 29 and comparison with shell-model predictions journal, August 1987

Exotic neutron-rich medium-mass nuclei with realistic nuclear forces journal, February 2017

Spectroscopy of Exotic Nuclei Using Heavy-Ion Transfer Reactions journal, November 1974

Shell evolution approaching the N = 20 island of inversion: Structure of Mg 29 journal, April 2019

Studies of the nuclei 31Al and 29Mg journal, January 1988

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Fractionated single-particle states of S 33 at E x = 8.6 − 9.5 MeV journal, May 1975

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Nuclear structure explored by β-delayed decay spectroscopy of spin-polarized radioactive nuclei at TRIUMF ISAC-1: Intruder configurations in 29Mg and 30Mg, the nuclei in the region of island of inversion journal, October 2013

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Title: Evolution of single-particle structure near the $N = 20$ island of inversion

Single-neutron knockout from intermediate energy beams of ${}^{30, 32}{Mg}$ : Mapping the transition into the “island of inversion”
journal, January 2008

Unexpected doubly magic nucleus
journal, June 2009

Nuclear ground-state spins and magnetic moments of ${}^{27}{Mg}$ , ${}^{29}{Mg}$ , and ${}^{31}{Mg}$
journal, March 2008

Commissioning of the HELIOS spectrometer
journal, October 2010

The role of shell evolution in shape coexistence
journal, January 2016

Low-lying neutron $f p$ -shell intruder states in $^{27}$ Ne
journal, January 2012

Nuclear magic numbers: New features far from stability
journal, October 2008

Charge breeding of radioactive ions with EBIS and EBIT
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Isobaric analog resonances of ${}^{31}{Mg}$ and the border of the island of inversion
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journal, August 1987

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journal, February 2017

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journal, November 1974

Shell evolution approaching the $N = 20$ island of inversion: Structure of ${}^{29}{Mg}$
journal, April 2019

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journal, October 2017

Varying shell gap and deformation in $N \sim 20$ unstable nuclei studied by the Monte Carlo shell model
journal, October 1999

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Structure of ${}^{38}{Cl}$ and the quest for a comprehensive shell model interaction
journal, September 2019

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journal, July 2013

Approaching the “island of inversion”: ${}^{34}P$
journal, July 2009

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journal, December 2020

Cooling of radioactive ions with the Penning trap REXTRAP
journal, February 2005

The Ame2012 atomic mass evaluation
journal, December 2012

The 26Mg(18O, 17F)27Na and 26Mg(18O, 15O)29Mg reactions and the level schemes of 27Na and 29Mg
journal, April 1985

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journal, August 1975

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journal, October 2013

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journal, March 1990

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journal, December 2010

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journal, April 2012

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journal, September 1992