6533b7d7fe1ef96bd12678a9

RESEARCH PRODUCT

First Measurement of Severalβ-Delayed Neutron Emitting Isotopes BeyondN=126

Michael HeilH. SchaffnerC. Domingo-pardoC. ParadelaThomas DavinsonM. MartaM. MartaGabriel Martínez-pinedoGabriel Martínez-pinedoFernando MontesM. BowryD. GalavizE. WilsonA. ProchazkaR. Caballero-folchIris DillmannIris DillmannIris DillmannKarl SmithI. KojouharovC. ScheidenbergerC. ScheidenbergerG. CortesA. R. GarcíaC. NociforoRoman GernhäuserA. V. YereminA. EstradeA. EstradeC. HinkeYu. A. LitvinovIvan BorzovIvan BorzovB. RubioTomislav MarketinE. SokolYassid AyyadM. TakechiJ. S. WinfieldA. ArconesStephen RiceF. FarinonJ. L. TainF. AmeilPhilip WoodsD. Cano-ottS. PietriHelmut WeickM. B. Gómez-hornillosA. EvdokimovA. EvdokimovR. KnöbelL. MaierA. RiegoW. GelletlyI. MukhaJ. AgramuntAlejandro AlgoraK. SteigerHans GeisselHans GeisselZs. PodolyákThomas FaestermannJ. KurcewiczN. KurzBao-hua SunR. WoodCarlos GuerreroCarlos GuerreroF. CalviñoT. MartinezJ. MarganiecD. TestovD. R. NapoliJ. Benlliure

subject

PhysicsIsotope010308 nuclear & particles physicsNeutron emissionAstrophysics::High Energy Astrophysical PhenomenaNuclear TheoryGeneral Physics and Astronomy01 natural sciencesMass formulaNuclear physics13. Climate actionNucleosynthesis0103 physical sciencesr-processNeutronNuclear Experiment010306 general physicss-processDelayed neutron

description

The β-delayed neutron emission probabilities of neutron rich Hg and Tl nuclei have been measured together with β-decay half-lives for 20 isotopes of Au, Hg, Tl, Pb, and Bi in the mass region N≳126. These are the heaviest species where neutron emission has been observed so far. These measurements provide key information to evaluate the performance of nuclear microscopic and phenomenological models in reproducing the high-energy part of the β-decay strength distribution. This provides important constraints on global theoretical models currently used in r-process nucleosynthesis.

https://doi.org/10.1103/physrevlett.117.012501