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Beta and particle decay spectroscopy at the
Super FRS
Zenon Janas
Nuclear Spectroscopy Division Warsaw University
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Branches of the Super FRS
High-Energy Branch
H. Weick, M. Winkler
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Regions of interest
? heavy proton emitters ? 100Sn region ? r-
process nuclei
197Fr 1 atom / s
100Sn 2 atoms / s
132Sn 108 atoms / s
78Ni 8 atoms / s
K.-H. Schmidt
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Heavy proton emitters
a- emitters
predicted p - emitters
91 89 87
207Pa
209Pa
201Ac
203Ac
197Fr
Experimental knowledge
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Detection of fast p and a decays
implantation ? range
focusing
position correlation ? high granularity
time correlation ? dedicated
electronics
DSSD
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Studies of r - process nuclei
? masses (Qb, Sn)
? b - decay halflives
b - strength distribution
? bn emission probabilities
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High - resolution bn and bg-ray measurements
n - det.
Identified ions
g - det.

• - particle
• tracking

segmented b - detectors
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Total Absorption Spectrometer
?ph 70 at 1 MeV
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Total absorption vs. high-resolution
measurements
6 ? Cluster detectors ?? 19 at 1.3 MeV
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Total Absorption Spectroscopy at Super FRS
Transport tape
extraction system
b dets.
NaI(Tl) ? 14? ? 14?
PMT
?
Super FRS
gas cell
TAS energy
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Possible contribution of the Warsaw group
setup for ms - decay studies -
dedicated preamplifiers - digital signal
processing
setup for Total Abs. Spectroscopy
measurements
ion catcher (EU RTD Network) - gas
flow simulations