The Beta-neutrino Correlation in Sodium-21 and Other Nuclei

We have measured the !−" correlation coefficient, a!", in 21Na using a laser-trapped sample. We measure the energy spectrum of the recoil nuclei by measuring their time-offlight in coincidence with the atomic electrons shaken off in beta decay. High detection efficiency of these low-energy electrons allows good counting statistics, even with low trap… CONTINUE READING