6533b82dfe1ef96bd1290918

RESEARCH PRODUCT

The nuclear structure of $^{223}$Fr

Gunnar LøvhøidenGunnar LøvhøidenP. HillP. HillH. GabelmannT. F. ThorsteinsenT. F. ThorsteinsenR. A. NaumannW. KurcewiczW. KurcewiczN. KaffrellJ. RogowskiK. NybøH. GietzD.g. BurkeGunnar NymanM. CronqvistMaría José García Borge

subject

PhysicsNuclear and High Energy PhysicsElectron spectrometerExcited stateNuclear structureLevel structureParity (physics)Nuclear Physics - ExperimentElectronAtomic physics

description

Abstract The γ-rays following the β− decay of 223Rn have been investigated by means of γ-ray singles including multispectrum analysis, and γγ-coincidence measurements using Ge detectors. Multipolarities of 38 transitions in 223Fr have been established by measuring conversion electrons with a mini-orange electron spectrometer. Most of the observed transitions could be placed in a level scheme comprising 53 excited states of 223Fr. The level structure is interpreted in terms of K π = 3 2 ± and 1 2 ± parity doublet bands, and a second K π = 3 2 ± higher-lying parity doublet. The experimental data are compared with the theoretical predictions of the reflection-asymmetric rotor model.

10.1016/0375-9474(92)90287-thttp://cds.cern.ch/record/227335