G4 Doctoral dissertation (monograph)
Palladium : a study of nuclear deformation of a refractory element : laser spectroscopy at the IGISOL (Jyväskylä, Finland) and S3-LEB (GANIL, France) (2023)

Ortiz Cortes, A. (2023). Palladium : a study of nuclear deformation of a refractory element : laser spectroscopy at the IGISOL (Jyväskylä, Finland) and S3-LEB (GANIL, France) [Doctoral dissertation]. University of Jyväskylä; Caen-Normandy University. JYU dissertations, 602. http://urn.fi/URN:ISBN:978-951-39-9287-3

JYU authors or editors

Publication details

All authors or editors: Ortiz Cortes, Alejandro

eISBN: 978-951-39-9287-3

Journal or series: JYU dissertations

eISSN: 2489-9003

Publication year: 2023

Number in series: 602

Number of pages in the book: 1 verkkoaineisto (156 sivua, 2 numeroimatonta sivua)

Publisher: University of Jyväskylä; Caen-Normandy University

Publication country: Finland

Publication language: English

Persistent website address: http://urn.fi/URN:ISBN:978-951-39-9287-3

Publication open access: Openly available

Publication channel open access: Open Access channel

Additional information:  Résumé myös ranskan kielellä

Abstract

At this work, laser spectroscopy measurements on the Pd isotopic chain using different techniques are presented. Thanks to the chemically insensitive IGISOL ion-guide production method, it has been possible to reduce the existing gap in optical spectroscopy data below Z=50, created by the refractory character of these elements. A study of the deformation of palladium nuclei on the mass region 98 ≤ A ≤ 118 is performed comparing the results of two collinear laser spectroscopy measurements with state-of-art Fayans and Gogny calculations. Having 6 protons and 4 holes on his valence shell, palladium is located at the mid-shell πg9/2, between the strongly deformed systems around zirconium (Z=40, N=60) and the spherical systems close to tin (Z=50), and are thus expected to exhibit a rather transitional character. The interpretation of the results have been done using axial and triaxial perspectives. The mean square charge radii have been extracted for the ground state of the even-even palladium isotopes on the mass region 98 ≤ A ≤ 118 and together with the magnetic dipole moments, electric quadrupole moments, nuclear spins and mean square charge radii of the odd-A 99,101,113,115Pd and the isomeric state of 115Pd. Complementing this work, this thesis includes the work with Fabry-Pérot interferometers to support laser spectroscopy measurements. To prepare future experiments towards the proton drip line, laser resonant ionization spectroscopy measurements of stable palladium isotopes have been performed suing two different approaches. On one side, the production study of stable palladium production test using a hot-cavity catcher is presented. On the other side, the offline test and development of resonant ionization palladium schemes has been performed at the GISELE offline laser laboratory.

Keywords: palladium; isotopes; spectroscopy; nuclear physics; doctoral dissertations

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2023