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Title: Neutron-hole strength in N = 81 nuclei

Abstract

A systematic study of neutron-hole strength in the N = 81 nuclei 137Ba, 139Ce, 141Nd, and 143Sm is reported. The single-neutron removal reactions (p,d) and (3He,α) were measured at energies of 23 and 34 MeV, respectively. Spectroscopic factors were extracted from measured cross sections through a distorted-wave Born approximation analysis and centroids of single-particle strength have been established. Here, the change in these centroid energies as a function of proton number have been compared to calculations of the monopole shift for the s1/2 and h11/2 orbitals, where the majority of the strength has been observed. Significant fragmentation of strength was observed for the d and g7/2 orbitals, particularly for the latter orbital which is deeply bound, with summed strengths that indicate a significant amount lies outside of the measured excitation energy range.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [2];  [3];  [4];  [5];  [4];  [6];  [4];  [2]
  1. Univ. of Manchester (United Kingdom); Technical Univ. of Munich, Garching (Germany)
  2. Univ. of Manchester (United Kingdom)
  3. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. Argonne National Lab. (ANL), Argonne, IL (United States); Louisiana State Univ., Baton Rouge, LA (United States); Michigan State Univ., East Lansing, MI (United States)
  6. Yale Univ., New Haven, CT (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); United Kingdom Science and Technology Facilities Council
OSTI Identifier:
1606256
Alternate Identifier(s):
OSTI ID: 1605624
Grant/Contract Number:  
AC02-06CH11357; FG02-91ER40609
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 101; Journal Issue: 3; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; direct reactions; nuclear structure & decays; spectroscopic factors & electromagnetic moments; transfer reactions; 90 ≤ A ≤ 149

Citation Formats

Howard, A. M., Freeman, Sean J., Sharp, D. K., Bloxham, T., Clark, J. A., Deibel, C. M., Kay, B. P., Parker, P. D., Schiffer, J. P., and Thomas, J. S. Neutron-hole strength in N=81 nuclei. United States: N. p., 2020. Web. doi:10.1103/PhysRevC.101.034309.
Howard, A. M., Freeman, Sean J., Sharp, D. K., Bloxham, T., Clark, J. A., Deibel, C. M., Kay, B. P., Parker, P. D., Schiffer, J. P., & Thomas, J. S. Neutron-hole strength in N=81 nuclei. United States. doi:https://doi.org/10.1103/PhysRevC.101.034309
Howard, A. M., Freeman, Sean J., Sharp, D. K., Bloxham, T., Clark, J. A., Deibel, C. M., Kay, B. P., Parker, P. D., Schiffer, J. P., and Thomas, J. S. Fri . "Neutron-hole strength in N=81 nuclei". United States. doi:https://doi.org/10.1103/PhysRevC.101.034309. https://www.osti.gov/servlets/purl/1606256.
@article{osti_1606256,
title = {Neutron-hole strength in N=81 nuclei},
author = {Howard, A. M. and Freeman, Sean J. and Sharp, D. K. and Bloxham, T. and Clark, J. A. and Deibel, C. M. and Kay, B. P. and Parker, P. D. and Schiffer, J. P. and Thomas, J. S.},
abstractNote = {A systematic study of neutron-hole strength in the N = 81 nuclei 137Ba, 139Ce, 141Nd, and 143Sm is reported. The single-neutron removal reactions (p,d) and (3He,α) were measured at energies of 23 and 34 MeV, respectively. Spectroscopic factors were extracted from measured cross sections through a distorted-wave Born approximation analysis and centroids of single-particle strength have been established. Here, the change in these centroid energies as a function of proton number have been compared to calculations of the monopole shift for the s1/2 and h11/2 orbitals, where the majority of the strength has been observed. Significant fragmentation of strength was observed for the d and g7/2 orbitals, particularly for the latter orbital which is deeply bound, with summed strengths that indicate a significant amount lies outside of the measured excitation energy range.},
doi = {10.1103/PhysRevC.101.034309},
journal = {Physical Review C},
number = 3,
volume = 101,
place = {United States},
year = {2020},
month = {3}
}

Works referenced in this record:

Valence neutron properties relevant to the neutrinoless double- β decay of 130 Te
journal, January 2013


Accurate nucleon-nucleon potential with charge-independence breaking
journal, January 1995

  • Wiringa, R. B.; Stoks, V. G. J.; Schiavilla, R.
  • Physical Review C, Vol. 51, Issue 1
  • DOI: 10.1103/PhysRevC.51.38

Global deuteron optical model potential for the energy range up to 183 MeV
journal, May 2006


Shell-model calculations of nuclei around mass 130
journal, September 2015


Valence nucleon populations in the Ni isotopes
journal, March 2013


Ce 140 ( d ,   p ) Ce 141 at 17 MeV
journal, February 1977


Étude des isotones N = 81 : 139Ce, 141Nd, 143Sm, au moyen des réactions (d, t ) et (3He, α)
journal, January 1976


Evolution of Nuclear Shells due to the Tensor Force
journal, November 2005


Study of the Level Structure of N = 82 Nuclei via Proton-Transfer Reactions
journal, March 1971


Experimental study of the rearrangements of valence protons and neutrons amongst single-particle orbits during double- β decay in Mo 100
journal, November 2017


Evaluation of Hamiltonian two-body matrix elements
journal, September 1989


The 142Nd(d, t)141Nd reaction
journal, June 1971


Nuclear Data Sheets for A = 143
journal, November 2001


Nuclear Structure of the N = 82 Isotones
journal, August 1971


Neutron hole states in 137Ba, 139Ce, 141Nd and 143Sm
journal, March 1971


Single-neutron energies outside 136 Xe
journal, August 2011


Change of nuclear configurations in the neutrinoless double- β decay of Te 130 Xe 130 and Xe 136 Ba 136
journal, June 2016


Pair-truncated shell-model analysis of nuclei around mass 130
journal, March 2011


Neutron-hole strength distributions in heavy nuclei
journal, April 1983


G-matrix effective interaction with the paris potential
journal, October 1985


The effective interaction between nucleons deduced from nuclear spectra
journal, April 1976


Rearrangement of valence neutrons in the neutrinoless double- β decay of Xe 136
journal, November 2016


Neutron single-particle strength outside the N = 50 core
journal, January 2013


Neutron hole states in theN=81 nuclei
journal, February 1973

  • Heyde, K.; Brussaard, P. J.
  • Zeitschrift für Physik A Hadrons and nuclei, Vol. 259, Issue 1
  • DOI: 10.1007/BF01394476

Local and global nucleon optical models from 1 keV to 200 MeV
journal, January 2003


Quasi-elastic electron scattering off nuclei
journal, March 1993


A consistent analysis of (e,e′p) and (d,3He) experiments
journal, January 2001


Test of Sum Rules in Nucleon Transfer Reactions
journal, January 2012


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


Nuclear Data Sheets for A = 139
journal, March 2001


Shell evolution and nuclear forces
journal, March 2010


Spectroscopic studies in the A = 90 mass region (II) neutron hole states in N = 49 nuclei
journal, July 1969


Novel Features of Nuclear Forces and Shell Evolution in Exotic Nuclei
journal, January 2010


Quantum Monte Carlo calculations of spectroscopic overlaps in A 7 nuclei
journal, August 2011


Global optical model potential for A = 3 projectiles
journal, February 2009


Neutron s states in loosely bound nuclei
journal, June 2014


Is the Nuclear Spin-Orbit Interaction Changing with Neutron Excess?
journal, April 2004


Coulomb excitation of levels in 135 Ba and 137 Ba
journal, August 1984


Investigation of the 142Nd(p, d)141Nd and 142Nd(d, t)141Nd reactions
journal, November 1984


Neutron-Hole-State Structure in N = 81 Nuclei. I. Sm 144 and Nd 142 ( p , d )
journal, September 1971


The 54Fe(, d)53Fe and 140Ced(, d)139Ce reactions at 122 MeVag
journal, August 1985


High-j single-particle neutron states outside the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>82</mml:mn></mml:math> core
journal, January 2008


Nuclear Data Sheets for A = 141
journal, February 2001


Quenching of Cross Sections in Nucleon Transfer Reactions
journal, July 2013


The single-hole states in the 50 < N ≦ 126 shell with (p, d) reactions
journal, December 1968


Nuclear Data Sheets for A = 137
journal, October 2007


A study of levels in 141Nd with the (d, t) AND (3He, α) reactions
journal, April 1977


The level scheme of143Nd and a unified-model interpretation
journal, March 1975

  • Veefkind, J. C.; Spaargaren, D.; Blok, J.
  • Zeitschrift f�r Physik A: Atoms and Nuclei, Vol. 275, Issue 1
  • DOI: 10.1007/BF01409500

Neutron-Hole-State Structure in N = 81 Nuclei. II. Ce 140 and Ba 138 ( p , d )
journal, October 1971


Deuteron Optical-Model Analysis in the Range of 11 to 27 MeV
journal, October 1963