title: Radiocarbon dating using electrostatic accelerators: negative ions provide the key.
abstract: Mass spectrometric methods have long been suggested as ways of measuring (14)C/(12)C ratios for carbon dating. One problem has been to distinguish between (14)N and (14)C. With negative ions and a tandem electrostatic accelerator, the (14)N background is virtually absent and fewer than three (14)C atoms in 10(16) atoms of (12)C have been easily measured.
authors.forename: C L
authors.initials: CL
authors.lastname: Bennett
authors.forename: R P
authors.initials: RP
authors.lastname: Beukens
authors.forename: M R
authors.initials: MR
authors.lastname: Clover
authors.forename: H E
authors.initials: HE
authors.lastname: Gove
authors.forename: R B
authors.initials: RB
authors.lastname: Liebert
authors.forename: A E
authors.initials: AE
authors.lastname: Litherland
authors.forename: K H
authors.initials: KH
authors.lastname: Purser
authors.forename: W E
authors.initials: WE
authors.lastname: Sondheim