1 / 11

Stable octupole deformation in light actinides (…as predicted 8 years ago)

Stable octupole deformation in light actinides (…as predicted 8 years ago). Dimitris Petrellis. REX-. @. (source : http :// isolde.web.cern.ch/isolde/REX-ISOLDE/nine.html). Life-time measurements. 220Rn. 224Ra. Intrinsic moment. Deform. parameter. Reduced m.e.

mihaly
Download Presentation

Stable octupole deformation in light actinides (…as predicted 8 years ago)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Stable octupole deformation in light actinides(…as predicted 8 years ago) DimitrisPetrellis

  2. REX- @ (source: http://isolde.web.cern.ch/isolde/REX-ISOLDE/nine.html) Life-time measurements 220Rn 224Ra Intrinsic moment Deform. parameter Reduced m.e.

  3. Octupole deformation • Multipole order: l=3 • Axial symmetry • Reflection Asymmetry 5- 6+ 6+ 3- 5- Energy spectra 4+ 4+ 1- 3- 2+ 2+ 1- 0+ 0+ • Low lying negative–parity • states • States of alternating • parity --> band Rotational Vibrational

  4. Analytic QuadrupoleOctupole Axially symmetric model (AQOA) 𝝓  relative presence between quadrupole and octupole

  5. Energy Staggering normalized to of each nucleus for odd L

  6. Parameter-free solution L-dependent effective potential Expand around min dependence eliminated!

  7. T-violation  EDM • Atom in its g.s. cannot have an EDM without T-violation • Neutral atom in uniform el. Fielde- displaced: cancel the el. field at the nucleus • But! Nucleus is not point-like e.g. does not see uniform el. field of e- yet is not accelerated! • If nuclear charge =/= nuclear dipole-moment density distr  average force on nucleus =0 while EDM interaction =/=0 • Schiff moment(=el dipole distr weighted by R^2) measure of this • Octupole deformed nuclei  enhanced Schiff moment

More Related