of chiral bandhead in 128 Cs E. Grodner Faculty of Physics, - - PowerPoint PPT Presentation

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of chiral bandhead in 128 Cs E. Grodner Faculty of Physics, - - PowerPoint PPT Presentation

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SSNET 6-12 November 2016 Magnetic dipole moment of chiral bandhead in 128 Cs E. Grodner Faculty of Physics, University of Warsaw J. Srebrny HIL, University of Warsaw Zakad Fizyki Jdrowej HIL (WARSAW) LNL INFN (ITALY) IPN (ORSAY) NIPNE

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SLIDE 1

SSNET 6-12 November 2016

Magnetic dipole moment

  • f chiral bandhead in 128Cs

HIL (WARSAW) IPN (ORSAY)

Zakład Fizyki Jądrowej

LNL INFN (ITALY) NIPNE (ROMANIA)

  • E. Grodner

Faculty of Physics, University of Warsaw

  • J. Srebrny

HIL, University of Warsaw

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SLIDE 2

SSNET 6-12 November 2016

Nuclear chirality - observables

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SLIDE 3

SSNET 6-12 November 2016

Lifetime results from the DSA experiments –warsaw cyclotron Partner bands populated in fusion evaporation reaction M1 interband transitions yrast->side observed in 126Cs Energy separation in Cs Isotopes around 150 keV configuration E.G. et al.,

128Cs as the best example revealing the chiral symmetry breaking phenomenon

  • Phys. Rev. Lett. 97 (2006) 172501

Nuclear chirality - observables Cs, La

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SLIDE 4

SSNET 6-12 November 2016

Nuclear chirality - observables Cs, La

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SLIDE 5

SSNET 6-12 November 2016

EAGLE

J.Mierzejewski et al.,

  • Nucl. Instr. and Meth. A 659, 84 (2011);
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SLIDE 6

SSNET 6-12 November 2016

E.G. et al., Partner bands of 126Cs – first observation of chiral electromagnetic selection rules

  • Phys. Lett. B703 (2011) 45

E.G. et al.,

128Cs as the best example revealing the chiral symmetry breaking phenomenon

  • Phys. Rev. Lett. 97 (2006) 172501

Is there an observable more directly realted to the geommetry of the three angular momenta vectors?

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SLIDE 7

SSNET 6-12 November 2016

G-factor (3-components)

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SLIDE 8

SSNET 6-12 November 2016

Chiral configuration intermediate value of g-factor

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SLIDE 9

SSNET 6-12 November 2016

Planar (non-chiral) configuration maximum value of g-factor

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SLIDE 10

SSNET 6-12 November 2016

Opposite planar (non-chiral) configuration minimum value of g-factor

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SLIDE 11

SSNET 6-12 November 2016

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SLIDE 12

SSNET 6-12 November 2016

G-factor and handedness

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SLIDE 13

SSNET 6-12 November 2016

G-factor and handedness

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SLIDE 14

SSNET 6-12 November 2016

How to measure g ? Initial spin alignment. Angular distribution

  • f the gamma radiation

External magnetic field B… ... Interacts with the magnetic moment Spin precession TDPAD method

measurement, TDPAD

TANDEM, ALTO facility ORSAY

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SLIDE 15

SSNET 6-12 November 2016

How to measure g ? Initial spin alignment. Angular distribution

  • f the gamma radiation

External magnetic field B… ... Interacts with the magnetic moment Spin precession TDPAD method

measurement, TDPAD

TANDEM, ALTO facility ORSAY

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SLIDE 16

SSNET 6-12 November 2016

TDPAD requirements Timing HPGe Strong external field B Pulsed beam Long level lifetime (around 100ns)

TDPAD requirements

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SLIDE 17

SSNET 6-12 November 2016

GAMIPE chamber NIPNE (Rromania) Fe Poles, 300% B field amplification

External B-field – GAMIPE chamber

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SLIDE 18

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Oscillating intensities

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SLIDE 19

SSNET 6-12 November 2016

Quantum coupling 3 angular momenta

SINGLE-COUPLING SCHEMES

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SLIDE 20

SSNET 6-12 November 2016

Quantum coupling 3 angular momenta

SINGLE-COUPLING SCHEMES

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SLIDE 21

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g=0.59

g=0.5980(5)

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SLIDE 22

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Quantum single-coupling schemes Always maximally chiral ?!

No planar solutions?

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SLIDE 23

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No planar solutions?

Quantum single-coupling schemes Always maximally chiral ?! 2010 -> 2016

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SLIDE 24

SSNET 6-12 November 2016

Did we choose a special set of coupling?

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SSNET 6-12 November 2016

Did we choose a special set of coupling?

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SLIDE 26

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Closer to semi-classical picture

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SLIDE 27

SSNET 6-12 November 2016

jp x jnx R=0 g=0.5 jp x jnx R=2 g=0.65 jp x jnx R=4 g=0.80 Eksperyment g=0.59 The chiral bandhead is NON- CHIRAL

CONCLUSION: non-chiral configuration!

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SLIDE 28

SSNET 6-12 November 2016

M.Kowalczyk, M.Kisieliński, J.Srebrny , L. Próchniak ŚLCJ E.Grodner

WARAW UNI.

  • C. Ur, F. Recchia

INFN PADOVA

  • S. Aydin

AKSARAY, INFN

  • G. Georgiev, E. Fiori, R. Lozeva

IPN ORSAY

  • M. Bujor

NIPNE

  • Ch. Droste

ZFJ

  • G. Rohoziński

ZTJA

L.Próchniak

ŚLCJ

  • J. Meng, Q. B. Chen ,S. Zhang,L. F. Yu , P. Zhao

Beihang UNI.