@Article{Guerrero_etal2019,
author="Guerrero, C.
and Tessler, M.
and Paul, M.
and Lerendegui-Marco, J.
and Heinitz, S.
and Maugeri, E. A.
and Domingo-Pardo, C.
and Dressler, R.
and Halfon, S.
and Kivel, N.
and Koster, U.
and Palchan-Hazan, T.
and Quesada, J. M.
and Schumann, D.
and Weissman, L.",
title="The s-process in the Nd-Pm-Sm region: Neutron activation of Pm-147",
journal="Physics Letters B",
year="2019",
publisher="Elsevier",
volume="797",
pages="134809--6pp",
optkeywords="Nucleosynthesis; Neutron capture; Nuclear reactions; s-process; MACS; Neutron activation",
abstract="The Nd-Pm-Sm branching is of interest for the study of the s-process, related to the production of heavy elements in stars. As Sm-148 and Sm-150 are s-only isotopes, the understanding of the branching allows constraining the s-process neutron density. In this context the key physics input needed is the cross section of the three unstable nuclides in the region: Nd-147 (10.98 d half-life), Pm-147 (2.62 yr) and Pm-148 (5.37 d). This paper reports on the activation measurement of Pm-147, the longest-lived of the three nuclides. The cross section measurement has been carried out by activation at the SARAF LiLiT facility using a 56(2) $\mu$g target. Compared to the single previous measurement of Pm-147, the measurement presented herein benefits from a target 2000 times more massive. The resulting Maxwellian Averaged Cross Section (MACS) to the ground and metastable states in Pm-148 are 469(50) mb and 357(27) mb. These values are 41{\%} higher (to the ground state) and 15{\%} lower (to the metastable state) than the values reported so far, leading however to a total cross section of 826(107) mb consistent within uncertainties with the previous result and hence leaving unchanged the previous calculation of the s-process neutron density.",
optnote="WOS:000488071200026",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4161), last updated on Tue, 22 Oct 2019 16:22:06 +0000",
issn="0370-2693",
doi="10.1016/j.physletb.2019.134809",
opturl="https://doi.org/10.1016/j.physletb.2019.134809",
language="English"
}