title: The mass of 22Mg.
abstract: Mass measurements with a relative precision of better than 1.5 x 10(-8) were performed on 22Mg and its reaction partners 21Na and 22Na with the ISOLTRAP Penning trap mass spectrometer at CERN, yielding the mass excesses D(22Mg)=-399.92(27) keV, D(21Na)=-2184.71(21) keV, and D(22Na)=-5181.56(16) keV. The importance of these results is twofold. First, a comparative half-life (Ft value) has been obtained for the superallowed beta decay of 22Mg to further test the conserved-vector-current hypothesis. Second, the resonance energy for the 21Na proton capture reaction has been independently determined, allowing direct comparisons of observable gamma radiation in nova explosions with the yield expected from models.
authors.affiliation: GSI, Planckstrasse 1, 64291 Darmstadt, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Mukherjee
authors.forename: A
authors.initials: A
authors.lastname: Kellerbauer
authors.forename: D
authors.initials: D
authors.lastname: Beck
authors.forename: K
authors.initials: K
authors.lastname: Blaum
authors.forename: G
authors.initials: G
authors.lastname: Bollen
authors.forename: F
authors.initials: F
authors.lastname: Carrel
authors.forename: P
authors.initials: P
authors.lastname: Delahaye
authors.forename: J
authors.initials: J
authors.lastname: Dilling
authors.forename: S
authors.initials: S
authors.lastname: George
authors.forename: C
authors.initials: C
authors.lastname: Guénaut
authors.forename: F
authors.initials: F
authors.lastname: Herfurth
authors.forename: A
authors.initials: A
authors.lastname: Herlert
authors.forename: H-J
authors.initials: HJ
authors.lastname: Kluge
authors.forename: U
authors.initials: U
authors.lastname: Köster
authors.forename: D
authors.initials: D
authors.lastname: Lunney
authors.forename: S
authors.initials: S
authors.lastname: Schwarz
authors.forename: L
authors.initials: L
authors.lastname: Schweikhard
authors.forename: C
authors.initials: C
authors.lastname: Yazidjian