title: First measurement of pure electron shakeoff in the β decay of trapped 6He+ ions.
abstract: The electron shakeoff probability of 6Li2+ ions resulting from the β- decay of 6He+ ions has been measured with high precision using a specially designed recoil ion spectrometer. This is the first measurement of a pure electron shakeoff following nuclear β decay, not affected by multielectron processes such as Auger cascades. In this ideal textbook case for the application of the sudden approximation, the experimental ionization probability was found to be P(so)(exp)=0.02339(36) in perfect agreement with simple quantum mechanical calculations.
authors.affiliation: LPC Caen, ENSICAEN, Université de Caen Basse Normandie, CNRS/IN2P3-ENSI, Caen, France.
authors.forename: C
authors.initials: C
authors.lastname: Couratin
authors.forename: Ph
authors.initials: P
authors.lastname: Velten
authors.forename: X
authors.initials: X
authors.lastname: Fléchard
authors.forename: E
authors.initials: E
authors.lastname: Liénard
authors.forename: G
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authors.lastname: Ban
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authors.lastname: Cassimi
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authors.initials: P
authors.lastname: Delahaye
authors.forename: D
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authors.lastname: Durand
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authors.initials: D
authors.lastname: Hennecart
authors.forename: F
authors.initials: F
authors.lastname: Mauger
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authors.lastname: Méry
authors.forename: O
authors.initials: O
authors.lastname: Naviliat-Cuncic
authors.forename: Z
authors.initials: Z
authors.lastname: Patyk
authors.forename: D
authors.initials: D
authors.lastname: Rodríguez
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authors.initials: K
authors.lastname: Siegień-Iwaniuk
authors.forename: J-C
authors.initials: JC
authors.lastname: Thomas