Precision Experiments and Photon Spectroscopy at the Super FRS - - PowerPoint PPT Presentation

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Precision Experiments and Photon Spectroscopy at the Super FRS - - PowerPoint PPT Presentation

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Precision Experiments and Photon Spectroscopy at the Super FRS Magdalena G rska Polish-German Meeting, Warsaw, November 24, 2003 Motivation for the LEB Energy and range focusing Experimental opportunities: Agata

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Precision Experiments and Photon Spectroscopy at the Super FRS

Magdalena Gόrska

Polish-German Meeting, Warsaw, November 24, 2003

  • Motivation for the LEB
  • Energy and range focusing
  • Experimental opportunities:

– Agata – Laser Spectroscopy – Ion Traps

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SLIDE 2

SIS 200: 2/s SIS 200: 65/h SIS 200: 1 10 /s

9

SIS 200: 8/s SIS 200: 1 10 /s

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Motivation for the LEB

(Low energy high-quality beams, complementary to ISOL)

  • Neutron rich nuclei (H. Geissel)
  • Shells and shapes

(shell quenching)

  • N=Z nuclei (Z. Janas)
  • Symmetries (A. May)
  • Astrophysics (H.G., Z.J.)

T.R. Werner, J. Dobaczewski, W. Nazarewicz,

  • Z. Phys. A358 (1997) 169
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SLIDE 3
  • H. Geissel et al.,

NIM A (1989)

  • Z. J.

Opportunities at the LEB

Energy Buncher: BρMax = 10 Tm εx = ±300 π mm mrad εy = ±200 π mm mrad ∆p/pacc = ± 2.5% Ion optical R = 600

  • C. Scheidenberger
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ε(Mγ=1,Eγ=1MeV) = 0.5

Collaboration: 42 countries including PL

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SLIDE 5

Single-atom spectroscopy

I prod = 1 ion/s GANIL: J.M. Daugas et al.,

  • Phys. Lett. B476 (2000) 213

Shell structure isomer Warsaw Group s(100Sn)=1.8 pb FRS: Zs. Podolyak et al.,

  • Phys. Lett. B491 (2000) 225

Warsaw Group Iprod = 0.2 ion/s

K - isomerism

S t
  • p
i n g P
  • w
e r
  • f
R e l a t i v i s t i c H e a v y I
  • n
s B r e a k
  • d
  • w
n
  • f
t h e r e l a t i v i s t i c B e t h e t h e
  • r
y , F R S e x p e r i m e n t a l r e s u l t s w e r e t h e m
  • t
i v a t i
  • f
t h e n e w t h e
  • r
e t i c a l d e v e l
  • p
m e n t b y J . L i n a n d A . H . S
  • e
r e n s e n

Identification of the Doubly Magic

100Sn

σ(100Sn)=1.8 pb

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Paraffine and co ncrete shielding

Concrete

x, y, E, TOF ∆ x, y, E, TOF ∆

Dump Dump

LASER spectroscopy Solid-state physics, medicine, etc. Trap system

Power supplies Power supplies for beam-line magnets Roots blower, gas purification, gas recycling

Gas cell

35 meter

  • swift monoenergetic exotic beams

(gamma-ray spectroscopy)

  • ISOL type beams

(laser spectroscopy, precision experiments)

  • beam stopped in thin absorbers

(α, β, γ spectroscopy) - see the next talk

Probing new fields at LEB with: