General GroupingsProton-Rich

D. Seweryniak (structure around 100Sn)CARIBU

D. Hartley (triaxial nuclei), D. Kulp (neg. parity bands)C. Chiara (RIB + 7Li), R. Janssens (g-factor studies)N. Koller (g-factor studies), R. Casten (binding

energies)V. Werner (fast timing lifetime measurements)

Heavy ElementsW. Loveland (make them), A. Heinz (structure)T.L. Khoo (single-particle energies)

High-SpinL. Riedinger (tetrahedral), S. Tabor (island of

inversion)X. Wang (ultra high-spin)

Experimental Needs for 100SnMain emphasis on excited states in 100Sn and single-

particle states and nucleon-nucleon interactions using in-beam spectroscopy

More intense beamsPush rates in GAMMASPHERE (x5)

Digital GS Beams 100-200 pnA

Channel selection – tagging with decays (, p, p, ) High granularity DSSD

Secondary fusion-evaporation reactionsIn-flight radioactive beamsBeams 10 pA

CARIBU: g-factors

252Cf + GammasphereA.G. Smith et al. PLB 591, 55 (2004)

Behavior of neutron-rich g factors

An example:g factors of n-rich isotopes between Z=40 and Z=50.

Why are some g(2+) smaller than in the stable isotopes?

Use RIV on CARIBU beams to extend and improve precision of data.

** Simultaneous measurement of B(E2) and g factor **

Robert channeled A. StuchberyNoemie wants to do clean 138Xe

CARIBU: Interesting stuff @ N≈90

Two regions of parabolic anomalies.

Two regions of octupole correlations

Possible signature?

CARIBU: Coulex BeamsSkalski et al. find

stable γ minimumAlso see superdefJ. Hamilton et al. &

C.Y. Wu et al. pushed up around I=20

Safe Coulex to measure Q0

Unsafe Coulex to go beyond I=20

100Zr for tetrahedral shape?J. Skalski et al., NPA 617, 282 (1997)

TAKE AWAY POINT:TAKE AWAY POINT:

IN ALL CASES, EBIS WILL DRAMATICALLY HELP WITH 10x MORE BEAM!!!!

Heavy Elements

Wish ListIntensity, intensity, intensity

Long experiments

Complicated setup → campaigns

Dedicated detection system → complete spectroscopy

Phase I will certainly help this group!

High-spinTriaxial strongly

deformed bands in N ≈ 94 Er, Hf, Ta, Re, etc.

Identify wobbling bands and find linking transitions to floating bands

Island of inversion and intruder states in A ≈ 30

Tetrahedral shapes in Dy & U