Measurement of the E1/E3 phase in226Ra

Amzal, N.; Butler, P. A.; Hawcroft, D.; Hammond, N. J.; Herzberg, R.‐D.; Jones, G.D.; Scholey, C.; Stézowski, O.; Czosnyka, T.; Iwanicki, J.; Napiórkowski, P.; Julin, R.; Mach, H.; ̈ll, J. Cerderka; Fraile, L. M.; Fynbo, H. O. U.

doi:10.1016/j.nuclphysa.2004.01.087

“…This will occur at very low bombarding energies relative to the Coulomb barrier, typically 1-2 MeV per nucleon. The published data for 226 Ra [123] show a preference for the sign of (Q 1 /Q 3 ) to be negative, although the data were not sufficiently accurate to establish which hypothesis for the relative phase is the correct one. 3 0 transitions, for A=224 [4] and A=226 [62], are compared to various theoretical models, see the caption to figure 11.…”

Section: E1-e3 Phasementioning

confidence: 87%

Octupole collectivity in nuclei

Butler¹

2016

J. Phys. G: Nucl. Part. Phys.

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The experimental and theoretical evidence for octupole collectivity in nuclei is reviewed. Recent theoretical advances, covering a wide spectrum from meanfield theory to algebraic and cluster approaches, are discussed. The status of experimental data on the behaviour of energy levels and electric dipole and electric octupole transition moments is reviewed. Finally, an outlook is given on future prospects for this field.

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“…At sufficiently low bombarding energy relative to the Coulomb barrier, typically 1-2 MeV per nucleon for 40 Ar + 226 Ra, there is indeed sensitivity of the yields of low-lying negative parity states, following Coulomb excitation, to the E1/E3 phase. The published data [22] show a preference for the sign of (Q 1 /Q 3 ) to be negative, although the data were not sufficiently precise to establish which hypothesis for the relative phase is the correct one.…”

Section: E1 and E3 Momentsmentioning

confidence: 89%

New Accelerator Facility for Measurements of Nuclear Reactions at Energies Below 1 keV

Kaczmarski¹,

Kılıç²,

Czerski³

et al. 2014

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For certain combinations of protons and neutrons, there is a theoretical expectation that the shape of nuclei can assume octupole deformation, which would give rise to reflection asymmetry or a "pear shape" in the intrinsic frame, either dynamically (octupole vibrations) or statically (permanent octupole deformation). In this paper, I will briefly review the historic evidence for reflection asymmetry in nuclei, describe how recent experiments carried out at REX-ISOLDE are constraining nuclear theory and how they contribute to tests of extensions of the Standard Model, and look at future prospects for this field.

show abstract

“…At sufficiently low bombarding energy relative to the Coulomb barrier, typically 1-2 MeV per nucleon for 40 Ar + 226 Ra, there is indeed sensitivity of the yields of low-lying negative parity states, following Coulomb excitation, to the E1/E3 phase. The published data [22] show a preference for the sign of (Q 1 /Q 3 ) to be negative, although the data were not sufficiently precise to establish which hypothesis for the relative phase is the correct one.…”

Section: E1 and E3 Momentsmentioning

confidence: 89%

Pear-shaped Nuclei: Nuclear Models and the Standard Model

Butler¹

2014

Self Cite

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For certain combinations of protons and neutrons, there is a theoretical expectation that the shape of nuclei can assume octupole deformation, which would give rise to reflection asymmetry or a "pear shape" in the intrinsic frame, either dynamically (octupole vibrations) or statically (permanent octupole deformation). In this paper, I will briefly review the historic evidence for reflection asymmetry in nuclei, describe how recent experiments carried out at REX-ISOLDE are constraining nuclear theory and how they contribute to tests of extensions of the Standard Model, and look at future prospects for this field.

show abstract

Measurement of the E1/E3 phase in226Ra

Cited by 5 publications

References 3 publications

Octupole collectivity in nuclei

Octupole collectivity in nuclei

New Accelerator Facility for Measurements of Nuclear Reactions at Energies Below 1 keV

Pear-shaped Nuclei: Nuclear Models and the Standard Model

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