Abstract
We report on the -delayed neutron emission probability () measurements of the () precursors performed in one single experiment using the neutron-counter TETRA at the ALTO facility in Orsay. Altogether our results for the three , and 84 Ga precursors point towards a sizable staggering in the region, similar to the one already observed just after the shell closure in the K isotopes chain, hinting at a similar mechanism. We will discuss the possible microscopic origin of this behavior, i.e., the existence in the light isotones of low-lying components of the so called pygmy Gamow-Teller resonance, already well established at , and persisting toward .
5 More- Received 20 March 2017
DOI:https://doi.org/10.1103/PhysRevC.95.054320
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Published by the American Physical Society