Beta-decay half-lives of isotopes produced in projectile fragmentation

Details Beta-decay half-lives of isotopes produced in projectile fragmentation Beta-decay half-lives of isotopes produced in projectile fragmentation

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phrvl..49..455m&link_type=abstract

Physical Review Letters, vol. 49, Aug. 16, 1982, p. 455-457.

Physics

21

Beta Particles, Fragmentation, Half Life, Oxygen Isotopes, Projectiles, Radioactive Decay, Electron Energy, Electron Mass, Magnesium Isotopes, Neon Isotopes, 20<=A<=38, Beta Decay, Double Beta Decay, Electron And Muon Capture

Scientific paper

A technique of measuring the beta-decay of large numbers of short-lived neutron rich nuclei produced by high-energy projectile fragmentation is presented. The fragments are deflected through a magnetic spectrometer to select isotopes of a particular rigidity, i.e., neutron-rich nuclei. A multielement solid-state telescope stops the fragments with the result that range and energy loss data provide charge and mass identification. Detectors switched on within two milliseconds of the arrest of a fragment record low-energy electrons for two seconds. The telescope consists of two 5 cm diam by 800 microns thick Si(Li) detectors backed by six 7 cm diam by 5 mm thick position sensitive Si(Li) detectors. Isotopes of oxygen through silicon were identified by means of energy change relationships, as were half-lives by measuring the delay times for electrons emanating from the nuclei. Results are presented for 0-22, Ne-25, Na-27, -28, and Mg-29 and -30.

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