Search of neutron rich superdeformer etc with ribf and gretina
Download
1 / 24

Search of neutron-rich superdeformer, etc. with RIBF and GRETINA - PowerPoint PPT Presentation


  • 69 Views
  • Uploaded on

Search of neutron-rich superdeformer, etc. with RIBF and GRETINA. Makito Oi Senshu University and RIKEN in collaboration with. Eiji Ideguchi CNS, University of Tokyo. Phil Walker University of Surrey. Gammashpere. Successes: superdeformation magnetic rotation high-K (yrare) states.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Search of neutron-rich superdeformer, etc. with RIBF and GRETINA' - draco


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Search of neutron rich superdeformer etc with ribf and gretina

Search of neutron-rich superdeformer, etc. with RIBF and GRETINA

Makito Oi

Senshu University and RIKEN

in collaboration with

Eiji Ideguchi

CNS, University of Tokyo

Phil Walker

University of Surrey


Gammashpere
Gammashpere

  • Successes:

    • superdeformation

    • magnetic rotation

    • high-K (yrare) states


High spin physics
High-spin physics

Many unsolved problems

  • Superdeformation (esp. mid/heavy)

    • Linking transitions

    • Decay mechanism

    • “Third” minimum (hyperdeformation)

  • ‘Triaxiality’

    • Wobbling motion

    • Chiral rotation

  • “Yrare” physics in general


Greta gretina new eyes to see nucleus
GRETA/GRETINA: new “eyes” to see nucleus

Everytime new ‘eyes’ are invented, new physics is found

  • To see:

    • neutron-rich superdeformer

    • superheavy K-isomer

    • chiral and/or wobbling rotation

    • Ultra high-spin ( > 100 h/2π)



Superdeformation of 40 ca
Superdeformation of 40Ca

  • B1: SD (8p-8h)

  • B2: Oblate? (4p-4h)

  • B1: PRL87,222501(2001)

  • B2: PRL29,1261 (1972)


Shell structure
Shell structure

N=4 (“intruder”)

N=3 (fp shell)

N=2 (sd shell)


Deformed shell structure
Deformed shell structure

(Nilsson model)


Backbending plot
Backbending plot

(HFB with P+QQ) : MO, Phys. Rev. C (2008)


Rotational alignment
Rotational alignment

  • Right (without g9/2) and left (with g9/2)


Deformation
Deformation

  • Left for elongation (β)

  • Right for triaxiality (γ)


48 ca 28 g 9 2 orbital
48Ca28: g9/2 orbital

neutron

proton


Dynamical triaxiality
Dynamical triaxiality

Generator Coordinate Method (GCM)

GCM basis






A spectulation neutron rich high spin physics
A spectulation: neutron-rich high-spin physics


A possible manifestation shears like mechanism
A possible manifestation:shears-like mechanism?



High k isomer in superheavy nuclei
High-K isomer in superheavy nuclei

  • Transition from high-K to low-K in No isotopes

  • Splitting of the N=5 shell

    • f7/2 and f5/2

  • Roles of triaxiality and wobbling

(Yang Sun: Projected Shell model)


Conclusion
Conclusion

  • Multi-dimensional cranking model

    • high-K isomer with Superheavy

    • Wobbling and Chirality

  • Triaxiality

  • Superdeformation

    • neutron-rich

    • Ultra-fast

High-spin physics with RI and GRT:


Backbend structure
Backbend Structure

(d5/2)-2(s1/2d3/2)-7(fp)8(g9/2)1


Nuclear structure
Nuclear structure

Finite quantum many-body system: --- protons and neutrons

  • Shape and Size

    • Short-range force --- driplines

    • Shell effects --- M-Num, S-Def

  • Pairing

    • Backbending (structural change)


ad