[Triumf-seminars] TRIUMF Seminar today at 14:00

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Date/Time: Thu 2004-01-22 at 14:00

Location:  Auditorium          

Speaker:   Nick Scielzo (ANL)

Title:     Measuring beta decay correlations in laser trapped 21Na

Abstract: Neutral atom traps are an appealing source for b decay correlations experiments -- only the desired isotope is trapped nearly at rest in a volume of <1 mm3 and all decay products emerge from the trap volume with negligible scattering.  A magneto-optical trap (MOT) is loaded with 21Na produced on-line at the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory.  We have recently completed a measurement of the beta - neutrino correlation coefficient by measuring the time-of-flight distribution of coincident b+-21Ne events in the presence of a drift electric field.  We plan to load atoms from the MOT into a spin-polarized far-off-resonance trap to measure spin-dependent b decay correlations.  We are also investigating the detection of shake-off electrons instead of b+s to increase the coincident detection rate of some measurements by up to two orders of magnitude.



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