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

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

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

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

Physics

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

Abstract

High-spin states in the N = Z nucleus Kr-72 were populated using the Ca-40(Ar-36,2p2n) reaction at a beam energy of 145 MeV. The yrast band has been observed up to a tentative spin of 20 (h) over bar. 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)	-
Number of pages	7
Journal	Physical Review C
Volume	6402
Issue number	2
Publication status	Published - Aug 2001

Keywords

ALIGNMENT
T=0
SYMMETRY
REGION
MODEL
BANDS

Cite this

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

abstract = "High-spin states in the N = Z nucleus Kr-72 were populated using the Ca-40(Ar-36,2p2n) reaction at a beam energy of 145 MeV. The yrast band has been observed up to a tentative spin of 20 (h) over bar. 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.",

keywords = "ALIGNMENT, T=0, SYMMETRY, REGION, MODEL, BANDS",

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,

language = "English",

volume = "6402",

pages = "--",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "2",

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TY - JOUR

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

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 Kr-72 were populated using the Ca-40(Ar-36,2p2n) reaction at a beam energy of 145 MeV. The yrast band has been observed up to a tentative spin of 20 (h) over bar. 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.

AB - High-spin states in the N = Z nucleus Kr-72 were populated using the Ca-40(Ar-36,2p2n) reaction at a beam energy of 145 MeV. The yrast band has been observed up to a tentative spin of 20 (h) over bar. 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.

KW - ALIGNMENT

KW - T=0

KW - SYMMETRY

KW - REGION

KW - MODEL

KW - BANDS

M3 - Article

SN - 2469-9985

VL - 6402

SP - -

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 024309

ER -