Consequences of neutron-proton pairing correlations for the rotational motion of the N = Z nucleus 72Kr

N. S. Kelsall; R. Wadsworth; A. N. Wilson; P. Fallon; A. O. Macchiavelli; R. M. Clark; D. G. Sarantites; D. Seweryniak; C. E. Svensson; S. M. Vincent; S. Frauendorf; J. A. Sheikh; G. C. Ball

doi:10.1103/PhysRevC.64.024309

Consequences of neutron-proton pairing correlations for the rotational motion of the N = Z nucleus ⁷²Kr

N. S. Kelsall^*, R. Wadsworth, A. N. Wilson, P. Fallon, A. O. Macchiavelli, R. M. Clark, D. G. Sarantites, D. Seweryniak, C. E. Svensson, S. M. Vincent, S. Frauendorf, J. A. Sheikh, G. C. Ball

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

High-spin states in the N = Z nucleus ⁷²Kr were populated using the ⁴⁰Ca(³⁶Ar,2p2n) reaction at a beam energy of 145 MeV. The yrast band has been observed up to a tentative spin of 20ℏ. Nonyrast rotational structures have also been observed for the first time. The alignment of g_9/2 protons and neutrons in the yrast band is observed to be significantly delayed relative to the heavier even-even Kr isotopes. Exact deformed cranked shell model calculations suggest that this could be due to the combined effect of isovector (T = 1) and isoscalar (T = 0) neutron-proton pairing correlations.

Original language	English
Article number	024309
Pages (from-to)	243091-243097
Number of pages	7
Journal	Physical Review C - Nuclear Physics
Volume	64
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.64.024309
Publication status	Published - Aug 2001

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Kelsall, N. S., Wadsworth, R., Wilson, A. N., Fallon, P., Macchiavelli, A. O., Clark, R. M., Sarantites, D. G., Seweryniak, D., Svensson, C. E., Vincent, S. M., Frauendorf, S., Sheikh, J. A., & Ball, G. C. (2001). Consequences of neutron-proton pairing correlations for the rotational motion of the N = Z nucleus ⁷²Kr. Physical Review C - Nuclear Physics, 64(2), 243091-243097. Article 024309. https://doi.org/10.1103/PhysRevC.64.024309

@article{f972f804fc8d403ab78bf76b167f4d65,

title = "Consequences of neutron-proton pairing correlations for the rotational motion of the N = Z nucleus 72Kr",

abstract = "High-spin states in the N = Z nucleus 72Kr were populated using the 40Ca(36Ar,2p2n) reaction at a beam energy of 145 MeV. The yrast band has been observed up to a tentative spin of 20ℏ. Nonyrast rotational structures have also been observed for the first time. The alignment of g9/2 protons and neutrons in the yrast band is observed to be significantly delayed relative to the heavier even-even Kr isotopes. Exact deformed cranked shell model calculations suggest that this could be due to the combined effect of isovector (T = 1) and isoscalar (T = 0) neutron-proton pairing correlations.",

author = "Kelsall, {N. S.} and R. Wadsworth and Wilson, {A. N.} and P. Fallon and Macchiavelli, {A. O.} and Clark, {R. M.} and Sarantites, {D. G.} and D. Seweryniak and Svensson, {C. E.} and Vincent, {S. M.} and S. Frauendorf and Sheikh, {J. A.} and Ball, {G. C.}",

year = "2001",

month = aug,

doi = "10.1103/PhysRevC.64.024309",

language = "English",

volume = "64",

pages = "243091--243097",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "2",

}

Kelsall, NS, Wadsworth, R, Wilson, AN, Fallon, P, Macchiavelli, AO, Clark, RM, Sarantites, DG, Seweryniak, D, Svensson, CE, Vincent, SM, Frauendorf, S, Sheikh, JA & Ball, GC 2001, 'Consequences of neutron-proton pairing correlations for the rotational motion of the N = Z nucleus ⁷²Kr', Physical Review C - Nuclear Physics, vol. 64, no. 2, 024309, pp. 243091-243097. https://doi.org/10.1103/PhysRevC.64.024309

TY - JOUR

T1 - Consequences of neutron-proton pairing correlations for the rotational motion of the N = Z nucleus 72Kr

AU - Kelsall, N. S.

AU - Wadsworth, R.

AU - Wilson, A. N.

AU - Fallon, P.

AU - Macchiavelli, A. O.

AU - Clark, R. M.

AU - Sarantites, D. G.

AU - Seweryniak, D.

AU - Svensson, C. E.

AU - Vincent, S. M.

AU - Frauendorf, S.

AU - Sheikh, J. A.

AU - Ball, G. C.

PY - 2001/8

Y1 - 2001/8

N2 - High-spin states in the N = Z nucleus 72Kr were populated using the 40Ca(36Ar,2p2n) reaction at a beam energy of 145 MeV. The yrast band has been observed up to a tentative spin of 20ℏ. Nonyrast rotational structures have also been observed for the first time. The alignment of g9/2 protons and neutrons in the yrast band is observed to be significantly delayed relative to the heavier even-even Kr isotopes. Exact deformed cranked shell model calculations suggest that this could be due to the combined effect of isovector (T = 1) and isoscalar (T = 0) neutron-proton pairing correlations.

AB - High-spin states in the N = Z nucleus 72Kr were populated using the 40Ca(36Ar,2p2n) reaction at a beam energy of 145 MeV. The yrast band has been observed up to a tentative spin of 20ℏ. Nonyrast rotational structures have also been observed for the first time. The alignment of g9/2 protons and neutrons in the yrast band is observed to be significantly delayed relative to the heavier even-even Kr isotopes. Exact deformed cranked shell model calculations suggest that this could be due to the combined effect of isovector (T = 1) and isoscalar (T = 0) neutron-proton pairing correlations.

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U2 - 10.1103/PhysRevC.64.024309

DO - 10.1103/PhysRevC.64.024309

M3 - Article

SN - 0556-2813

VL - 64

SP - 243091

EP - 243097

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 2

M1 - 024309

ER -

Consequences of neutron-proton pairing correlations for the rotational motion of the N = Z nucleus ⁷²Kr

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