Paul trapping of radioactive $^{6}$He+ ions and direct observation of their beta-decay

Abstract : We demonstrate that abundant quantities of short-lived beta unstable ions can be trapped in a novel transparent Paul trap and that their decay products can directly be detected in coincidence. Low energy 6He+ (807 ms half-life) ions were extracted from the SPIRAL source at GANIL, then decelerated, cooled and bunched by means of the buffer gas cooling technique. More than 10^8 ions have been stored over a measuring period of six days and about 10^5 decay coincidences between the beta particles and the 6Li^{++} recoiling ions have been recorded. The technique can be extended to other short-lived species, opening new possibilities for trap assisted decay experiments.
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Submitted on : Friday, October 17, 2008 - 4:05:18 PM
Last modification on : Tuesday, February 19, 2019 - 11:10:03 AM

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X. Fléchard, E. Liénard, A. Mery, D. Rodriguez, G. Ban, et al.. Paul trapping of radioactive $^{6}$He+ ions and direct observation of their beta-decay. Physical Review Letters, American Physical Society, 2008, 101, pp.212504. ⟨10.1103/PhysRevLett.101.212504⟩. ⟨in2p3-00331783⟩

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