Isobaric analog state of 14Be

doi:10.1016/S0370-2693(01)00890-5

Physics Letters B

Volume 515, Issues 3–4, 30 August 2001, Pages 255-260

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Abstract

The Isobaric Analog State (IAS) of the neutron-dripline nucleus ¹⁴Be has been found for the first time in a charge-exchange reaction ¹⁴Be(p, n)¹⁴B^∗ in inverse kinematics at E(¹⁴Be)=74 A MeV. The excitation energy and width of the observed IAS were measured to be 17.06±0.03 MeV and 0.11±0.05 MeV (FWHM), respectively. The Coulomb displacement energy and the measured width of the IAS are discussed in connection with a possible neutron-halo structure of the ¹⁴Be nucleus.

PACS

25.40.Kv

25.45.Kk

25.60.Lg

27.20.+n

Keywords

Isobaric analog state

Charge-exchange reactions

Radioactive beam experiment

Coulomb displacement energy

Halo structure