Abstract
Charged-particle decay spectroscopy of heavy suburanium isotopes produced by projectile fragmentation of 1 GeV/u 238U was tested using a simple implantation-decay set-up equipped with fast-reset preamplifiers. The products were separated and identified with the GSI fragment separator (FRS) and implanted into a stack of Si detectors. Measurements were performed of implantation decay correlations of nuclei with half-lives in the range of 0.1-100 ms. Yields of very neutron-deficient protactinium, thorium and actinium isotopes were measured and yield extrapolations imply that with the availability of a beam intensity of 109 ions/s, projectile fragmentation of relativistic 238U can be an effective method to access new nuclear species including possible proton emitters in the suburanium region.
Original language | English |
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Pages (from-to) | 591-601 |
Number of pages | 11 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 543 |
Issue number | 2-3 |
DOIs | |
State | Published - May 11 2005 |
Funding
We are grateful to K.H. Behr, A. Brünle, K. Burkard, W. Hüller and M. Winkler for the technical support in the preparation for and during the experiment. Z.L., P.J.W., T.D. and A.R. would like to acknowledge funding from EPSRC. This work was partially supported by the EC under Contract HPRI-CT-1999-50017.
Keywords
- α radioactivity
- p radioactivity
- Projectile-fragmentation
- Suburanium isotopes