6533b839fe1ef96bd12a5930

RESEARCH PRODUCT

Determination of the spin of 31Ar

Teemu SiiskonenH. O. U. FynboOlof TengbladM. J. G. BorgeL. M. FraileAri JokinenIsmael MartelA. HonkanenGöran Hugo NymanFredrik WenanderM. H. SmedbergBjörn JonsonJuha ÄYstöLeif AxelssonK. RiisagerMarkku OinonenMarkku OinonenThomas NilssonThomas NilssonJ. ThaysenY. JadingP. HornshøjI. Mukha

subject

Nuclear physicsPhysicsNuclear and High Energy PhysicsHigh Energy Physics::ExperimentAtomic physicsProton emissionNuclear ExperimentProton energyBeta decaySpin-½

description

Abstract The beta-delayed proton emission from the lightest Ar-isotopes has been recorded with a high-granularity, large solid-angle Si-detector set-up. Proton energy shifts due to beta-recoil have been measured. We demonstrate how this allows the spin of 31 Ar to be determined as 5/2. The method can be applied at decay rates as low as 1 s −1 .

https://doi.org/10.1016/s0370-2693(99)01172-7