title: Paul trapping of radioactive 6He+ 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.
authors.affiliation: LPC-Caen, ENSICAEN, Université de Caen, CNRS/IN2P3-ENSI, Caen, France.
authors.forename: X
authors.initials: X
authors.lastname: Fléchard
authors.forename: E
authors.initials: E
authors.lastname: Liénard
authors.forename: A
authors.initials: A
authors.lastname: Méry
authors.forename: D
authors.initials: D
authors.lastname: Rodríguez
authors.forename: G
authors.initials: G
authors.lastname: Ban
authors.forename: D
authors.initials: D
authors.lastname: Durand
authors.forename: F
authors.initials: F
authors.lastname: Duval
authors.forename: M
authors.initials: M
authors.lastname: Herbane
authors.forename: M
authors.initials: M
authors.lastname: Labalme
authors.forename: F
authors.initials: F
authors.lastname: Mauger
authors.forename: O
authors.initials: O
authors.lastname: Naviliat-Cuncic
authors.forename: J C
authors.initials: JC
authors.lastname: Thomas
authors.forename: Ph
authors.initials: P
authors.lastname: Velten