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Title: $β^-$ decay of $$T_z$$ = +$$\frac{11}{2}$$ isotopes $$\mathrm{^{37}Al}$$ and $$\mathrm{^{39}Si}$$: Understanding Gamow-Teller strength distribution in neutron-rich nuclei

Abstract

$β^-$ decay of $$T_z$$ = +$$\frac{11}{2}$$ nuclei $$\mathrm{^{37}Al}$$ and $$\mathrm{^{39}Si}$$ was studied to obtain information about excited states in the daughter and granddaughter nuclei. New information on excited states has been obtained for $$\mathrm{^{37,39}P}$$ whereas level schemes for $$\mathrm{^{37}Si}$$ and $$\mathrm{^{37,39}S}$$ were confirmed and expanded on as compared to the most recent investigations. For the nuclei studied, the valence proton and neutron occupy different major shells with opposite parities, hence, the $β^-$ decay preferentially and primarily populates core-excited $1p1h$ intruder states with a parity opposite to the ground state of the daughter nucleus. These low-lying intruder states shed light on the $N = 20$ shell gap and its evolution with neutron number. The $β^-$ decay of very neutron-rich nuclei also illustrates how the Gamow-Teller (GT) strength distribution changes with neutron excess. Comparing $β^-$ decay of $$\mathrm{^{37,39}Si}$$ presented here with $$\mathrm{^{38,40}Si}$$ from a previous study, we clearly see an even-odd effect in the GT strength distribution with the decay from even-even nuclei showing strong low-lying strength whereas for the odd $A$ being very fragmented. Finally, configuration interaction shell-model calculations with the state-of-art SDPFSDG-MU effective interaction were performed to understand the structure of the $1p1h$ states and explore the GT strength distribution.

Authors:
 [1];  [1];  [2];  [3];  [4];  [5];  [6];  [7];  [1];  [2];  [1];  [3];  [1];  [8];  [3];  [9];  [10];  [1];  [1]
  1. Florida State Univ., Tallahassee, FL (United States). Dept. of Physics
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division
  3. Michigan State Univ., East Lansing, MI (United States). Dept. of Chemistry, and National Superconducting Cyclotron Lab.
  4. Univ. of Tokyo (Japan). Dept. of Physics
  5. Japan Atomic Energy Agency (JAEA), Tokai (Japan). Advanced Science Research Center; Univ. of Tokyo (Japan). Center for Nuclear Study
  6. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Univ. of Massachusetts, Amherst, MA (United States). Dept. of Physics
  7. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Mississippi State Univ., Mississippi State, MS (United States). Dept. of Physics
  8. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Univ. of Tokyo (Japan). Dept. of Physics; Katholieke Univ., Leuven (Belgium). Inst. voor Kern-en Stralingsfysica
  9. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
  10. Univ. of Tokyo (Japan). Center for Nuclear Study
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1574994
Alternate Identifier(s):
OSTI ID: 1545426
Grant/Contract Number:  
[NA0003841; AC02-05CH11231; SC0009883; NA0000979; NA0002132; NA00033221; NA0003180]
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
[ Journal Volume: 100; Journal Issue: 1]; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Abromeit, B., Tripathi, Vandana, Crawford, H. L., Liddick, S. N., Yoshida, S., Utsuno, Y., Bender, P. C., Crider, B. P., Dungan, R., Fallon, P., Kravvaris, K., Larson, N., Lubna, R. S., Otsuka, T., Prokop, C. J., Richard, A. L., Shimizu, N., Tabor, S. L., and Volya, A. $β^-$ decay of $T_z$ = +$\frac{11}{2}$ isotopes $\mathrm{^{37}Al}$ and $\mathrm{^{39}Si}$: Understanding Gamow-Teller strength distribution in neutron-rich nuclei. United States: N. p., 2019. Web. doi:10.1103/PhysRevC.100.014323.
Abromeit, B., Tripathi, Vandana, Crawford, H. L., Liddick, S. N., Yoshida, S., Utsuno, Y., Bender, P. C., Crider, B. P., Dungan, R., Fallon, P., Kravvaris, K., Larson, N., Lubna, R. S., Otsuka, T., Prokop, C. J., Richard, A. L., Shimizu, N., Tabor, S. L., & Volya, A. $β^-$ decay of $T_z$ = +$\frac{11}{2}$ isotopes $\mathrm{^{37}Al}$ and $\mathrm{^{39}Si}$: Understanding Gamow-Teller strength distribution in neutron-rich nuclei. United States. doi:10.1103/PhysRevC.100.014323.
Abromeit, B., Tripathi, Vandana, Crawford, H. L., Liddick, S. N., Yoshida, S., Utsuno, Y., Bender, P. C., Crider, B. P., Dungan, R., Fallon, P., Kravvaris, K., Larson, N., Lubna, R. S., Otsuka, T., Prokop, C. J., Richard, A. L., Shimizu, N., Tabor, S. L., and Volya, A. Mon . "$β^-$ decay of $T_z$ = +$\frac{11}{2}$ isotopes $\mathrm{^{37}Al}$ and $\mathrm{^{39}Si}$: Understanding Gamow-Teller strength distribution in neutron-rich nuclei". United States. doi:10.1103/PhysRevC.100.014323.
@article{osti_1574994,
title = {$β^-$ decay of $T_z$ = +$\frac{11}{2}$ isotopes $\mathrm{^{37}Al}$ and $\mathrm{^{39}Si}$: Understanding Gamow-Teller strength distribution in neutron-rich nuclei},
author = {Abromeit, B. and Tripathi, Vandana and Crawford, H. L. and Liddick, S. N. and Yoshida, S. and Utsuno, Y. and Bender, P. C. and Crider, B. P. and Dungan, R. and Fallon, P. and Kravvaris, K. and Larson, N. and Lubna, R. S. and Otsuka, T. and Prokop, C. J. and Richard, A. L. and Shimizu, N. and Tabor, S. L. and Volya, A.},
abstractNote = {$β^-$ decay of $T_z$ = +$\frac{11}{2}$ nuclei $\mathrm{^{37}Al}$ and $\mathrm{^{39}Si}$ was studied to obtain information about excited states in the daughter and granddaughter nuclei. New information on excited states has been obtained for $\mathrm{^{37,39}P}$ whereas level schemes for $\mathrm{^{37}Si}$ and $\mathrm{^{37,39}S}$ were confirmed and expanded on as compared to the most recent investigations. For the nuclei studied, the valence proton and neutron occupy different major shells with opposite parities, hence, the $β^-$ decay preferentially and primarily populates core-excited $1p1h$ intruder states with a parity opposite to the ground state of the daughter nucleus. These low-lying intruder states shed light on the $N = 20$ shell gap and its evolution with neutron number. The $β^-$ decay of very neutron-rich nuclei also illustrates how the Gamow-Teller (GT) strength distribution changes with neutron excess. Comparing $β^-$ decay of $\mathrm{^{37,39}Si}$ presented here with $\mathrm{^{38,40}Si}$ from a previous study, we clearly see an even-odd effect in the GT strength distribution with the decay from even-even nuclei showing strong low-lying strength whereas for the odd $A$ being very fragmented. Finally, configuration interaction shell-model calculations with the state-of-art SDPFSDG-MU effective interaction were performed to understand the structure of the $1p1h$ states and explore the GT strength distribution.},
doi = {10.1103/PhysRevC.100.014323},
journal = {Physical Review C},
number = [1],
volume = [100],
place = {United States},
year = {2019},
month = {7}
}

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Works referenced in this record:

Spectroscopy of neutron-rich P 34 , 35 , 36 , 37 , 38 populated in binary grazing reactions
journal, October 2015


High efficiency beta-decay spectroscopy using a planar germanium double-sided strip detector
journal, November 2013

  • Larson, N.; Liddick, S. N.; Bennett, M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 727
  • DOI: 10.1016/j.nima.2013.06.027

Status of the Nuclear Shell Model
journal, December 1988


Commissioning the A1900 projectile fragment separator
journal, May 2003

  • Morrissey, D. J.; Sherrill, B. M.; Steiner, M.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 204
  • DOI: 10.1016/S0168-583X(02)01895-5

The essential decay of pandemonium: A demonstration of errors in complex beta-decay schemes
journal, November 1977


Thirty-two-fold segmented germanium detectors to identify γ-rays from intermediate-energy exotic beams
journal, July 2001

  • Mueller, W. F.; Church, J. A.; Glasmacher, T.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 466, Issue 3
  • DOI: 10.1016/S0168-9002(01)00257-1

Low-energy structure of 40 S through 40 P β decay
journal, November 2001


β-delayed γ spectroscopy of neutron rich Na 27 , 28 , 29
journal, May 2006


Spectroscopy of neutron-rich P 37
journal, March 2007


Evidence for Gamow-Teller Decay of Ni 78 Core from Beta-Delayed Neutron Emission Studies
journal, August 2016


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


Unexpected high-energy γ emission from decaying exotic nuclei
journal, September 2017


Reexamining Gamow-Teller decays near Ni 78
journal, April 2016


Northern boundary of the “island of inversion” and triaxiality in 34 Si
journal, September 2017


Systematic shell-model study of β -decay properties and Gamow-Teller strength distributions in A 40 neutron-rich nuclei
journal, May 2018


Beta decay of17C,19N,22O,24F,26Ne,32Al,34Al,35-36Si,36-37-38P,40S
journal, December 1986

  • Dufour, J. P.; Moral, R.; Fleury, A.
  • Zeitschrift f�r Physik A Atomic Nuclei, Vol. 324, Issue 4
  • DOI: 10.1007/BF01290934

In-beam γ -ray spectroscopy of S 38 42
journal, December 2016


Nuclear structure of 37, 38Si investigated by decay spectroscopy of 37, 38Al
journal, September 2015


Nuclear Data Sheets for A = 39
journal, February 2006


NSCL and FRIB at Michigan State University: Nuclear science at the limits of stability
journal, April 2016


Shell Evolution around and beyond $N=28$ Studied with Large-Scale Shell-Model Calculations
journal, January 2012

  • Utsuno, Yutaka; Otsuka, Takaharu; Brown, B. Alex
  • Progress of Theoretical Physics Supplement, Vol. 196
  • DOI: 10.1143/PTPS.196.304

Shell-model description of neutron-rich pf-shell nuclei with a new effective interaction GXPF 1
journal, April 2005


Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect
journal, November 2012


First in-beam γ -ray study of the level structure of neutron-rich S 39
journal, August 2016


β decay of Si 38 , 40 ( T z = + 5 , + 6 ) to low-lying core excited states in odd-odd P 38 , 40 isotopes
journal, February 2017


Structure of the neutron-rich 37, 39P and 43, 45Cl nuclei
journal, November 2004


New effective interaction for 0 ω shell-model calculations in the sd pf valence space
journal, January 2009


Evolution of the E ( 1 / 2 1 + ) E ( 3 / 2 1 + ) energy spacing in odd-mass K, Cl, and P isotopes for N = 20 28
journal, September 2006