Plans for future measurements with the CPT

1
Plans for future measurements with the CPT
Jason Clark ATLAS users workshop August 8, 2009
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Effect of mass uncertainties on the r-process

• Mass models have large uncertainties
• Direct mass measurements are necessary
• Provide input to network calculations
• Refine mass models

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Measurements with the CPT
Source 100 µCi 252Cf Efficiency of entire
system 0.07 (based on yield detected) Number
of neutron-rich measurements 69 (to date)
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Current comparisons of S2n with AME03
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Moving the CPT to CARIBU
CARIBU
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Initial focus of measurements with the CPT at
CARIBU

• First measurements
• 132Sn and neighbors
• 130Cd and neighbors

• Future measurements
• go as neutron-rich as possible

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Mass uncertainties along the rp-process
Effective lifetime of waiting-point nuclide 64Ge
A. Parikh et al., Phys. Rev. C 79 (2009) 045802.
Uncertainty in lifetime now dominated by
uncertainty in 65As mass
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X-ray burst model uncertainty Q values