Unexpected distribution of strength in
Abstract
The calcium isotopes have emerged as an important testing ground for new microscopically derived shell-model interactions, and a great deal of focus has been directed toward this region. We investigate the relative spectroscopic strengths associated with $$1f_{7/2}$$ neutron hole states in $$^{47, 49}$$Ca following one-neutron knockout reactions from $$^{48,50}$$Ca. The observed reduction of strength populating the lowest 7/2$$^{-}_{1}$$ state in $$^{49}$$Ca, as compared to $$^{47}$$Ca, is consistent with the description given by shell-model calculations based on two- and three-nucleon forces in the neutron $pf$ model space, implying a fragmentation of the $$l$$=3 strength to higher-lying states. The experimental result is inconsistent with both the GXPF1 interaction routinely used in this region of the nuclear chart and with microscopic calculations in an extended model space including the $$\nu1g_{9/2}$$ orbital.
- Authors:
-
more »
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Ohio Univ., Athens, OH (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Michigan State Univ., East Lansing, MI (United States)
- TRIUMF, Vancouver, BC (Canada); Univ. of British Columbia, Vancouver, BC (Canada)
- TRIUMF, Vancouver, BC (Canada)
- The Univ. of Tokyo, Tokyo (Japan)
- Technische Univ. Darmstadt, Darmstadt (Germany); Univ. of York, York (United Kingdom)
- Technische Univ. Darmstadt, Darmstadt (Germany); GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Darmstadt (Germany)
- Michigan State Univ., East Lansing, MI (United States); TRIUMF, Vancouver, BC (Canada)
- Univ. of Surrey, Surrey (United Kingdom)
- Technische Univ. Darmstadt, Darmstadt (Germany)
- Central Michigan Univ., Mount Pleasant, MI (United States); The Univ. of Tokyo, Tokyo (Japan)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1366427
- Alternate Identifier(s):
- OSTI ID: 1365438; OSTI ID: 1398468; OSTI ID: 1400273
- Grant/Contract Number:
- AC02-06CH11357; AC02-05CH11231; FG02-88ER40387; NA0000979
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 95; Journal Issue: 6; 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
Crawford, H. L., Macchiavelli, A. O., Fallon, P., Albers, M., Bader, V. M., Bazin, D., Campbell, C. M., Clark, R. M., Cromaz, M., Dilling, J., Gade, A., Gallant, A., Holt, J. D., Janssens, R. V. F., Krücken, R., Langer, C., Lauritsen, T., Lee, I. Y., Menéndez, J., Noji, S., Paschalis, S., Recchia, F., Rissanen, J., Schwenk, A., Scott, M., Simonis, J., Stroberg, S. R., Tostevin, J. A., Walz, C., Weisshaar, D., Wiens, A., Wimmer, K., and Zhu, S. Unexpected distribution of ν1f7/2 strength in Ca49. United States: N. p., 2017.
Web. doi:10.1103/PhysRevC.95.064317.
Crawford, H. L., Macchiavelli, A. O., Fallon, P., Albers, M., Bader, V. M., Bazin, D., Campbell, C. M., Clark, R. M., Cromaz, M., Dilling, J., Gade, A., Gallant, A., Holt, J. D., Janssens, R. V. F., Krücken, R., Langer, C., Lauritsen, T., Lee, I. Y., Menéndez, J., Noji, S., Paschalis, S., Recchia, F., Rissanen, J., Schwenk, A., Scott, M., Simonis, J., Stroberg, S. R., Tostevin, J. A., Walz, C., Weisshaar, D., Wiens, A., Wimmer, K., & Zhu, S. Unexpected distribution of ν1f7/2 strength in Ca49. United States. https://doi.org/10.1103/PhysRevC.95.064317
Crawford, H. L., Macchiavelli, A. O., Fallon, P., Albers, M., Bader, V. M., Bazin, D., Campbell, C. M., Clark, R. M., Cromaz, M., Dilling, J., Gade, A., Gallant, A., Holt, J. D., Janssens, R. V. F., Krücken, R., Langer, C., Lauritsen, T., Lee, I. Y., Menéndez, J., Noji, S., Paschalis, S., Recchia, F., Rissanen, J., Schwenk, A., Scott, M., Simonis, J., Stroberg, S. R., Tostevin, J. A., Walz, C., Weisshaar, D., Wiens, A., Wimmer, K., and Zhu, S. Wed .
"Unexpected distribution of ν1f7/2 strength in Ca49". United States. https://doi.org/10.1103/PhysRevC.95.064317. https://www.osti.gov/servlets/purl/1366427.
@article{osti_1366427,
title = {Unexpected distribution of ν1f7/2 strength in Ca49},
author = {Crawford, H. L. and Macchiavelli, A. O. and Fallon, P. and Albers, M. and Bader, V. M. and Bazin, D. and Campbell, C. M. and Clark, R. M. and Cromaz, M. and Dilling, J. and Gade, A. and Gallant, A. and Holt, J. D. and Janssens, R. V. F. and Krücken, R. and Langer, C. and Lauritsen, T. and Lee, I. Y. and Menéndez, J. and Noji, S. and Paschalis, S. and Recchia, F. and Rissanen, J. and Schwenk, A. and Scott, M. and Simonis, J. and Stroberg, S. R. and Tostevin, J. A. and Walz, C. and Weisshaar, D. and Wiens, A. and Wimmer, K. and Zhu, S.},
abstractNote = {The calcium isotopes have emerged as an important testing ground for new microscopically derived shell-model interactions, and a great deal of focus has been directed toward this region. We investigate the relative spectroscopic strengths associated with $1f_{7/2}$ neutron hole states in $^{47, 49}$Ca following one-neutron knockout reactions from $^{48,50}$Ca. The observed reduction of strength populating the lowest 7/2$^{-}_{1}$ state in $^{49}$Ca, as compared to $^{47}$Ca, is consistent with the description given by shell-model calculations based on two- and three-nucleon forces in the neutron $pf$ model space, implying a fragmentation of the $l$=3 strength to higher-lying states. The experimental result is inconsistent with both the GXPF1 interaction routinely used in this region of the nuclear chart and with microscopic calculations in an extended model space including the $\nu1g_{9/2}$ orbital.},
doi = {10.1103/PhysRevC.95.064317},
journal = {Physical Review C},
number = 6,
volume = 95,
place = {United States},
year = {Wed Jun 21 00:00:00 EDT 2017},
month = {Wed Jun 21 00:00:00 EDT 2017}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 11 works
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Octupole strength in the neutron-rich calcium isotopes
journal, April 2016
- Riley, L. A.; McPherson, D. M.; Agiorgousis, M. L.
- Physical Review C, Vol. 93, Issue 4
Reduction of spectroscopic strength: Weakly-bound and strongly-bound single-particle states studied using one-nucleon knockout reactions
journal, April 2008
- Gade, A.; Adrich, P.; Bazin, D.
- Physical Review C, Vol. 77, Issue 4
Nuclear Forces and Their Impact on Neutron-Rich Nuclei and Neutron-Rich Matter
journal, October 2015
- Hebeler, K.; Holt, J. D.; Menéndez, J.
- Annual Review of Nuclear and Particle Science, Vol. 65, Issue 1
Exploring -shell nuclei from two- and three-nucleon interactions with realistic saturation properties
journal, January 2016
- Simonis, J.; Hebeler, K.; Holt, J. D.
- Physical Review C, Vol. 93, Issue 1
The limits of the nuclear landscape
journal, June 2012
- Erler, Jochen; Birge, Noah; Kortelainen, Markus
- Nature, Vol. 486, Issue 7404
Three-body forces and shell structure in calcium isotopes
journal, July 2012
- Holt, Jason D.; Otsuka, Takaharu; Schwenk, Achim
- Journal of Physics G: Nuclear and Particle Physics, Vol. 39, Issue 8
Neutron and weak-charge distributions of the 48Ca nucleus
journal, November 2015
- Hagen, G.; Ekström, A.; Forssén, C.
- Nature Physics, Vol. 12, Issue 2
Effective interaction for -shell nuclei
journal, May 2002
- Honma, M.; Otsuka, T.; Brown, B. A.
- Physical Review C, Vol. 65, Issue 6
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
Improved nuclear matter calculations from chiral low-momentum interactions
journal, March 2011
- Hebeler, K.; Bogner, S. K.; Furnstahl, R. J.
- Physical Review C, Vol. 83, Issue 3
Chiral two- and three-nucleon forces along medium-mass isotope chains
journal, June 2014
- Somà, V.; Cipollone, A.; Barbieri, C.
- Physical Review C, Vol. 89, Issue 6
Center-of-mass effects in single-nucleon knock-out reactions
journal, August 1974
- Dieperink, A. E. L.; Forest, T. de
- Physical Review C, Vol. 10, Issue 2
The S800 spectrograph
journal, May 2003
- Bazin, D.; Caggiano, J. A.; Sherrill, B. M.
- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 204
Multi-shell effective interactions
journal, February 2014
- Tsunoda, Naofumi; Takayanagi, Kazuo; Hjorth-Jensen, Morten
- Physical Review C, Vol. 89, Issue 2
Three-nucleon forces and spectroscopy of neutron-rich calcium isotopes
journal, August 2014
- Holt, J. D.; Menéndez, J.; Simonis, J.
- Physical Review C, Vol. 90, Issue 2
Knockout from neutron removal and deviations from eikonal theory
journal, May 2005
- Gade, A.; Bazin, D.; Bertulani, C. A.
- Physical Review C, Vol. 71, Issue 5
Evidence for a new nuclear ‘magic number’ from the level structure of 54Ca
journal, October 2013
- Steppenbeck, D.; Takeuchi, S.; Aoi, N.
- Nature, Vol. 502, Issue 7470
Masses of exotic calcium isotopes pin down nuclear forces
journal, June 2013
- Wienholtz, F.; Beck, D.; Blaum, K.
- Nature, Vol. 498, Issue 7454
Structure of from First-Principles Computations
journal, October 2016
- Hagen, G.; Jansen, G. R.; Papenbrock, T.
- Physical Review Letters, Vol. 117, Issue 17
One-neutron knockout from 51–55 Sc
journal, December 2012
- Schwertel, S.; Maierbeck, P.; Krücken, R.
- The European Physical Journal A, Vol. 48, Issue 12
Efimov Physics Around the Neutron-Rich Isotope
journal, September 2013
- Hagen, G.; Hagen, P.; Hammer, H. -W.
- Physical Review Letters, Vol. 111, Issue 13
Systematics of intermediate-energy single-nucleon removal cross sections
journal, November 2014
- Tostevin, J. A.; Gade, A.
- Physical Review C, Vol. 90, Issue 5
Shell-model description of neutron-rich pf-shell nuclei with a new effective interaction GXPF 1
journal, April 2005
- Honma, M.; Otsuka, T.; Brown, B. A.
- The European Physical Journal A, Vol. 25, Issue S1
Spectroscopy of using the one-proton knockout reaction
journal, March 2016
- Mutschler, A.; Sorlin, O.; Lemasson, A.
- Physical Review C, Vol. 93, Issue 3
The performance of the Gamma-Ray Energy Tracking In-beam Nuclear Array GRETINA
journal, May 2013
- Paschalis, S.; Lee, I. Y.; Macchiavelli, A. O.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 709
Ab initio path to heavy nuclei
journal, September 2014
- Binder, Sven; Langhammer, Joachim; Calci, Angelo
- Physics Letters B, Vol. 736
Study of low-lying levels in 47Ca with the 48Ca(, t)47Ca reaction
journal, November 1977
- Williams-Norton, M. E.; Abegg, R.
- Nuclear Physics A, Vol. 291, Issue 2
Nuclear Data Sheets for A = 47
journal, May 2007
- Burrows, T. W.
- Nuclear Data Sheets, Vol. 108, Issue 5
One-neutron pickup into : Bound neutron spectroscopic strength at
journal, March 2016
- Gade, A.; Tostevin, J. A.; Bader, V.
- Physical Review C, Vol. 93, Issue 3
Unexpectedly large charge radii of neutron-rich calcium isotopes
journal, February 2016
- Garcia Ruiz, R. F.; Bissell, M. L.; Blaum, K.
- Nature Physics, Vol. 12, Issue 6
Proton-deuteron reactions at 40 MeV on the calcium isotopes
journal, May 1972
- Martin, P.; Buenerd, M.; Dupont, Y.
- Nuclear Physics A, Vol. 185, Issue 2
Probing the nature of particle–core couplings in 49Ca with γ spectroscopy and heavy-ion transfer reactions
journal, March 2011
- Montanari, D.; Leoni, S.; Mengoni, D.
- Physics Letters B, Vol. 697, Issue 4
Evolution of Shell Structure in Neutron-Rich Calcium Isotopes
journal, July 2012
- Hagen, G.; Hjorth-Jensen, M.; Jansen, G. R.
- Physical Review Letters, Vol. 109, Issue 3
Ground-state electromagnetic moments of calcium isotopes
journal, April 2015
- Ruiz, R. F. Garcia; Bissell, M. L.; Blaum, K.
- Physical Review C, Vol. 91, Issue 4
The role of three-nucleon forces and many-body processes in nuclear pairing
journal, June 2013
- Holt, J. D.; Menéndez, J.; Schwenk, A.
- Journal of Physics G: Nuclear and Particle Physics, Vol. 40, Issue 7
Ab initio multireference in-medium similarity renormalization group calculations of even calcium and nickel isotopes
journal, October 2014
- Hergert, H.; Bogner, S. K.; Morris, T. D.
- Physical Review C, Vol. 90, Issue 4
New Precision Mass Measurements of Neutron-Rich Calcium and Potassium Isotopes and Three-Nucleon Forces
journal, July 2012
- Gallant, A. T.; Bale, J. C.; Brunner, T.
- Physical Review Letters, Vol. 109, Issue 3
Nucleus-Dependent Valence-Space Approach to Nuclear Structure
journal, January 2017
- Stroberg, S. R.; Calci, A.; Hergert, H.
- Physical Review Letters, Vol. 118, Issue 3
Works referencing / citing this record:
Particle-phonon coupling: Understanding the variety of excitations in the low-lying spectra of odd nuclei
journal, December 2019
- Leoni, S.; Bracco, A.; Colò, G.
- The European Physical Journal A, Vol. 55, Issue 12