Competing particle-hole excitations in 30Na: Constraining state-of-the-art effective interactions

M. Petri; P. Fallon; A. O. Macchiavelli; S. Heil; E. Rodriguez-Vieitez; D. Bazin; C. M. Campbell; R. M. Clark; M. Cromaz; A. Gade; T. Glasmacher; I. Y. Lee; S. Malbrunot-Ettenauer; S. Paschalis; A. Ratkiewicz; J. R. Terry; D. Weisshaar; M. Wiedeking

doi:10.1016/j.physletb.2015.06.067

Competing particle-hole excitations in ³⁰Na: Constraining state-of-the-art effective interactions

M. Petri^*, P. Fallon, A. O. Macchiavelli, S. Heil, E. Rodriguez-Vieitez, D. Bazin, C. M. Campbell, R. M. Clark, M. Cromaz, A. Gade, T. Glasmacher, I. Y. Lee, S. Malbrunot-Ettenauer, S. Paschalis, A. Ratkiewicz, J. R. Terry, D. Weisshaar, M. Wiedeking

^*Corresponding author for this work

Physics

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Abstract

The odd-odd nucleus ³⁰Na is studied via a one-proton, one-proton-one-neutron and one-neutron removal reaction using an intermediate-energy ³¹Mg, ³²Mg and ³¹Na radioactive ion beam, respectively. Combining high-resolution γ-ray spectroscopy with the selectivity of the three reaction mechanisms, we are able to distinguish multiple particle-hole configurations. Negative-parity states in ³⁰Na are observed for the first time, providing an important measure of the excitation of the 1p1h/3p3h configuration and hence the sd-pf shell gap. The extracted band structures and level energies serve as invaluable input for the theoretical refinement of the effective interactions used in this region.

Original language	English
Pages (from-to)	173-177
Number of pages	5
Journal	Physics Letters B
Volume	748
DOIs	https://doi.org/10.1016/j.physletb.2015.06.067
Publication status	Published - 2 Sept 2015

Keywords

"Island of Inversion"
Effective interaction
Knockout reactions
Negative parity
Particle-hole excitations
Radioactive ion beams

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10.1016/j.physletb.2015.06.067

Cite this

Petri, M., Fallon, P., Macchiavelli, A. O., Heil, S., Rodriguez-Vieitez, E., Bazin, D., Campbell, C. M., Clark, R. M., Cromaz, M., Gade, A., Glasmacher, T., Lee, I. Y., Malbrunot-Ettenauer, S., Paschalis, S., Ratkiewicz, A., Terry, J. R., Weisshaar, D., & Wiedeking, M. (2015). Competing particle-hole excitations in ³⁰Na: Constraining state-of-the-art effective interactions. Physics Letters B, 748, 173-177. https://doi.org/10.1016/j.physletb.2015.06.067

@article{46d87f9d13c14930ba35ba300704de4e,

title = "Competing particle-hole excitations in 30Na: Constraining state-of-the-art effective interactions",

abstract = "The odd-odd nucleus 30Na is studied via a one-proton, one-proton-one-neutron and one-neutron removal reaction using an intermediate-energy 31Mg, 32Mg and 31Na radioactive ion beam, respectively. Combining high-resolution γ-ray spectroscopy with the selectivity of the three reaction mechanisms, we are able to distinguish multiple particle-hole configurations. Negative-parity states in 30Na are observed for the first time, providing an important measure of the excitation of the 1p1h/3p3h configuration and hence the sd-pf shell gap. The extracted band structures and level energies serve as invaluable input for the theoretical refinement of the effective interactions used in this region.",

keywords = "{"}Island of Inversion{"}, Effective interaction, Knockout reactions, Negative parity, Particle-hole excitations, Radioactive ion beams",

author = "M. Petri and P. Fallon and Macchiavelli, {A. O.} and S. Heil and E. Rodriguez-Vieitez and D. Bazin and Campbell, {C. M.} and Clark, {R. M.} and M. Cromaz and A. Gade and T. Glasmacher and Lee, {I. Y.} and S. Malbrunot-Ettenauer and S. Paschalis and A. Ratkiewicz and Terry, {J. R.} and D. Weisshaar and M. Wiedeking",

year = "2015",

month = sep,

day = "2",

doi = "10.1016/j.physletb.2015.06.067",

language = "English",

volume = "748",

pages = "173--177",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

Petri, M, Fallon, P, Macchiavelli, AO, Heil, S, Rodriguez-Vieitez, E, Bazin, D, Campbell, CM, Clark, RM, Cromaz, M, Gade, A, Glasmacher, T, Lee, IY, Malbrunot-Ettenauer, S, Paschalis, S, Ratkiewicz, A, Terry, JR, Weisshaar, D & Wiedeking, M 2015, 'Competing particle-hole excitations in ³⁰Na: Constraining state-of-the-art effective interactions', Physics Letters B, vol. 748, pp. 173-177. https://doi.org/10.1016/j.physletb.2015.06.067

TY - JOUR

T1 - Competing particle-hole excitations in 30Na

T2 - Constraining state-of-the-art effective interactions

AU - Petri, M.

AU - Fallon, P.

AU - Macchiavelli, A. O.

AU - Heil, S.

AU - Rodriguez-Vieitez, E.

AU - Bazin, D.

AU - Campbell, C. M.

AU - Clark, R. M.

AU - Cromaz, M.

AU - Gade, A.

AU - Glasmacher, T.

AU - Lee, I. Y.

AU - Malbrunot-Ettenauer, S.

AU - Paschalis, S.

AU - Ratkiewicz, A.

AU - Terry, J. R.

AU - Weisshaar, D.

AU - Wiedeking, M.

PY - 2015/9/2

Y1 - 2015/9/2

N2 - The odd-odd nucleus 30Na is studied via a one-proton, one-proton-one-neutron and one-neutron removal reaction using an intermediate-energy 31Mg, 32Mg and 31Na radioactive ion beam, respectively. Combining high-resolution γ-ray spectroscopy with the selectivity of the three reaction mechanisms, we are able to distinguish multiple particle-hole configurations. Negative-parity states in 30Na are observed for the first time, providing an important measure of the excitation of the 1p1h/3p3h configuration and hence the sd-pf shell gap. The extracted band structures and level energies serve as invaluable input for the theoretical refinement of the effective interactions used in this region.

AB - The odd-odd nucleus 30Na is studied via a one-proton, one-proton-one-neutron and one-neutron removal reaction using an intermediate-energy 31Mg, 32Mg and 31Na radioactive ion beam, respectively. Combining high-resolution γ-ray spectroscopy with the selectivity of the three reaction mechanisms, we are able to distinguish multiple particle-hole configurations. Negative-parity states in 30Na are observed for the first time, providing an important measure of the excitation of the 1p1h/3p3h configuration and hence the sd-pf shell gap. The extracted band structures and level energies serve as invaluable input for the theoretical refinement of the effective interactions used in this region.

KW - "Island of Inversion"

KW - Effective interaction

KW - Knockout reactions

KW - Negative parity

KW - Particle-hole excitations

KW - Radioactive ion beams

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U2 - 10.1016/j.physletb.2015.06.067

DO - 10.1016/j.physletb.2015.06.067

M3 - Article

AN - SCOPUS:84937045393

SN - 0370-2693

VL - 748

SP - 173

EP - 177

JO - Physics Letters B

JF - Physics Letters B