POLAREX Study of polarized exotic nuclei at millikelvin temperatures |
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Authors: | L Risegari A Astier G Audi S Cabaret C Gaulard G Georgiev N J Stone and J R Stone |
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Abstract: | POLAREX (POLARization of EXotic nuclei) is a new facility for the study of nuclear magnetic moments and decay modes of exotic
nuclei using the established On-Line Nuclear Orientation (OLNO) method. A radioactive beam of interest is implanted into a
ferromagnetic host foil held at a temperature of order 10mK in a 3He - 4He dilution refrigerator. The foil is magnetized by an applied magnetic field and the nuclear spins become polarized through
the internal hyperfine field. The angular distribution of decay products from the polarized sample is measured. Accurate values
of nuclear moment are obtained by NMR. The new facility will have access to neutron-rich nuclides produced at the ALTO facility
(Linear Accelerator at Orsay Tandem) by fission induced by electrons from the linear electron accelerator. Basic concepts
and initial tests are outlined. |
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