Identification of Isomeric States South of 208Pb via Projectile Fragmentation

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Identification of Isomeric States South of
208Pb via Projectile Fragmentation

• Steven J. Steer
• Dept. of Physics
• University of Surrey
• Guildford, GU2 7XH, UK
• s.steer_at_surrey.ac.uk

Preliminary Findings
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Fragmentation of 1 GeV/A 208Pb beam Zs.
Podolyák et al.
Main Aim Spectroscopy of N126 even-even
nuclei 206Hg, 204Pt, 202Os
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Particle Identification
De 1
De 0
De -1
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204Pt78 Eg time matrix
Low energy walk is artificially bent backwards.
This still needs improving.
Still to do Remove events from particles
unstopped in stopper Remove S4 degrader
reactions Gain match gas detectors Perform addback
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206Hg80 Gammas
B. Fornal et al., Phys. Rev. Lett. 87 (2001)
215201
N126, 2 proton holes
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N126 isotones (ph11/2)-2,4 Ip10 isomers.
Z80
Z78
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204Pt78 Gammas
N126, 4 proton holes
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204Pt Charge States
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New Isomer in 203Pt
202Pt78
203Pt78
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New Isomer in 202Au
202Pt78
203Au79
202Au79
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