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Dissertations / Theses on the topic 'Radioactive ion beam facilities'

Author: Grafiati

Published: 7 July 2024

Last updated: 31 July 2025

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1

Podadera, Aliseda Ivan. "New developments on preparation of cooled and bunched radioactive ion beams at ISOL-Facilities: the ISCOOL project and the rotating wall cooling." Doctoral thesis, Universitat Politècnica de Catalunya, 2006. http://hdl.handle.net/10803/6619.

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Last years have become very productive for the research, construction and development of new facilities devoted to the production of beams with exotic radioisotopes (Radioactive Ion Beams, RIB). These beams are later used for experiments in fields like nuclear physics, atomic physics, astrophysics or medicine, among others. Within this kind of facilities, the ISOL facilities stand out. They are based on the on-line separation of radioactive isotopes produced in nuclear reactions between a target and a high-energy proton beam. The ISOL method was the pioneer for these facilities and it has kept

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2

Ajayakumar, Anjali. "In gas jet laser spectroscopy optimization for high resolution measurement of actinides." Electronic Thesis or Diss., Normandie, 2023. http://www.theses.fr/2023NORMC267.

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La Ligne Basse Energie du Super Separator Spectrometer (S3-LEB) est un dispositif expérimental qui a pour objectif de produire des faisceaux d'ions radioactifs de basse énergie dans le cadre de l'installation GANIL-SPIRAL2. Ce travail de thèse traite des premiers résultats hors ligne de S3-LEB incluant les premières mesures de spectroscopie laser dans la cellule à gaz et dans le jet gazeux supersonique, la détermination de l'efficacité de transport des ions produits par ionisation laser résonante, depuis la cellule à gaz à travers la chaîne RFQ, et les mesures de temps de vol avec le spectromè

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3

DONZELLA, Antonietta. "Containment of Radioactive Hazard and Environmental Impact in a Radioactive ION Beam Facility." Doctoral thesis, Università degli studi di Brescia, 2021. http://hdl.handle.net/11379/544080.

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4

Vadas, Jessica Elizabeth. "Probing the Fusion of Neutron-Rich Nuclei with Modern Radioactive Beam Facilities." Thesis, Indiana University, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13423478.

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<p> Fusion in neutron-rich environments is presently a topic of considerable interest. For example, the optical emission spectrum from the neutron star merger GRB170817A clearly establishes this neutron-rich environment as an important nucleosynthetic site. Fusion of neutron-rich light nuclei in the outer crust of an accreting neutron star has also been proposed as responsible for triggering X-ray super-bursts. The underlying hypothesis in this proposition is that the fusion of neutron-rich nuclei is enhanced as compared to stable nuclei. A good approach to understand how fusion proceeds in ne

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5

Morgan, Breckenridge S. "Highly pervious liquid metal target systems for radioactive ION beam generation." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA365380.

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6

Davis, Lance Garth. "Design of a helium-6 production target for the iThemba LABS Radioactive-ion Beam Facility." University of the Western Cape, 2018. http://hdl.handle.net/11394/6840.

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>Magister Scientiae - MSc<br>It is well known, that there is a severe lack of information available pertaining to neutron rich nuclei, specifically of those nuclei with mass numbers ≥ 60. These neutron rich nuclei are not easy to access in current experimental facilities or be produced with sufficient yield to allow for it to be studied. In order to expand our understanding of nuclear physics by studying the properties and characteristics of these nuclei, the development of new facilities producing Radioactive-ion Beams (RIBs) is required. The applications for RIBs are wide, allowing for deepe

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7

Butterworth, James Ernest. "A new large acceptance, position sensitive bragg detector for studies of exotic nuclei at radioactive beam facilities." Thesis, University of York, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.535051.

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8

Herfurth, Frank. "A new ion beam cooler and buncher for ISOLTRAP and mass measurements of radioactive argon isotopes." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=961842520.

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9

Densham, Christopher John. "Design and development of a tantalum foil target for the production of high intensity radioactive beams." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365727.

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10

Bilheux, Jean-Christophe. "Design studies of high-power fast diffusion-release targets and fast vapor-transport systems for radioactive ion beam." Versailles-St Quentin en Yvelines, 2003. http://www.theses.fr/2003VERS0009.

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Il est difficile d'obtenir par la technique de séparation d'isotopes en ligne(ISOL), des faisceaux de particules radioactives à courte période qui aient des intensités d'intérêt pour la physique. Deux facteurs limitatifs par le temps qu'ils consomment : la diffusion des particules radioactives dans le matériau de cible et l'effusion (transport) de la cible à la source d'ions de laquelle elles vont être extraites et accélérées. Les temps caractéristiques de ces deux processus doivent être minimisés. Etant donné que la vitesse du processus de diffusion augmente d'autant plus que la cible est com

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11

Marazula, Thandazile. "The activation of stable isotopes, their migration in soil and groundwater at a radionuclide production facility : a case study in Faure, Cape Town, South Africa." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2777.

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Thesis (MTech (Environmental Management))--Cape Peninsula University of Technology, 2018.<br>The iThemba Laboratory for Accelerator Based Sciences (iThemba LABS or iTL), a facility governed by the National Research Foundation (NRF) based in Cape Town has embarked on a project called the South African Isotope Facility (SAIF). Part of the SAIF will be a project called the Low Energy Radioactive Ion Beam (LERIB) for the production of radioactive beams with the Separated Sector Cyclotron (SSC). The LERIB project is anticipated to generate significant prompt sources of ionising radiation such as ne

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12

Day, Goodacre Thomas. "Developments of the ISOLDE RILIS for radioactive ion beam production and the results of their application in the study of exotic mercury isotopes." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/developments-of-the-isolde-rilis-for-radioactive-ion-beam-production-and-the-results-of-their-application-in-the-study-of-exotic-mercury-isotopes(02c79aff-86c7-4eaf-8701-f70c0ccdcdd4).html.

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This work centres around development and applications of the Resonance Ionization Laser Ion Source (RILIS) of the ISOLDE radioactive ion beam facility based at CERN. The RILIS applies step-wise resonance photo-ionization, to achieve an unparalleled degree of element selectivity, without compromising on ion source efficiency. Because of this, it has become the most commonly used ion source at ISOLDE, operating for up to 75% of ISOLDE experiments. In addition to its normal application as an ion source, the RILIS can be exploited as a spectroscopic tool for the study of nuclear ground state and i

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13

Bosquet, Vincent. "Speed : système de prοductiοn d'éléments exοtiques déficients en neutrοns". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMC212.

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L'installation GANIL/SPIRAL1 produit des faisceaux d'ions radioactifs avec la méthode ISOL. Ce travail de thèse se concentre sur le développement et l'amélioration de plusieurs ECSs (Ensemble Cible Source), dans le but d'augmenter la variété et l'intensité des faisceaux d’ions radioactifs disponibles. La première partie de ce mémoire présente les améliorations apportées à l’ECS FEBIAD, qui présentait des problèmes d'efficacité d'ionisation et de fiabilité. À l’aide d’une série de tests expérimentaux, la source du problème a été identifiée et résolue, ce qui a permis d'obtenir une efficacité d'

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14

Nibart, Vincent. "Projet PIAFE : transport d'ions exotiques de basse énergie sur longue distance." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10019.

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Le projet piafe consiste a produire des noyaux riches en neutrons par fission au sein d'une cible d'uranium placee pres du cur du reacteur de l'institut laue langevin, puis de transporter les produits de fission sous forme monochargee et a basse energie (inferieure a 30 kev) sur une distance de 400 m jusqu'au complexe accelerateur sara de l'institut des sciences nucleaires de grenoble. Une solution originale de guidage ayant ete proposee, l'objectif de cette these est de prouver la faisabilite d'un tel transport. Pour ceci, on s'est attache a etudier les effets sur le faisceau des defauts d'al

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15

"New developments on preparation of cooled and bunched radioactive ion beams at ISOL-Facilities: the ISCOOL project and the rotating wall cooling." Universitat Politècnica de Catalunya, 2006. http://www.tesisenxarxa.net/TDX-0922109-121453/.

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16

Froese, Michael Wayne. "The TITAN electron beam ion trap: assembly, characterization, and first tests." Thesis, 2006. http://hdl.handle.net/1993/288.

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The precision of mass measurements in a Penning trap is directly proportional to an ion's charge state and can be increased by using highly charged ions (HCI) from an Electron Beam Ion Trap (EBIT). By bombarding the injected and trapped singly charged ions with an intense electron beam, the charge state of the ions is rapidly increased. To use this method for short-lived isotopes, very high electron beam current densities are required of the TITAN EBIT, built and commissioned at the Max-Planck-Institute for Nuclear Physics in Heidelberg, Germany and transported to TRIUMF for the TITAN on-line

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17

Herfurth, Frank [Verfasser]. "A new ion beam cooler and buncher for ISOLTRAP and mass measurements of radioactive argon isotopes / presented by Frank Herfurth." 2001. http://d-nb.info/961842520/34.

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18

Kuchi, V., and P. Jardin. "Grain size influence on the release of radioactive isotopes out of target materials made of powder." 2017. https://ul.qucosa.de/id/qucosa%3A31632.

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Radioactive ion beam production by Isotope Separator On Line method (ISOL) has motivated the construction of several nuclear facilities over the world. The method consists in impinging solid target material with beams of stable nucleus. Radioactive nuclei produced during the collision are stopped in the target material and must diffuse out of it as fast as possible to transform them into ions before their radioactive decay. The release time must thus be as short as possible to avoid their losses. The release of the nuclei depends on several parameters, which are related to the chemistry of the

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19

Teigelhöfer, Andrea. "Isotope shift and hyperfine structure measurements on silver, actinium and astatine by in-source resonant ionization laser spectroscopy." 2017. http://hdl.handle.net/1993/32217.

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Resonant ionization laser ion sources are applied worldwide to increase purity and intensity of rare isotopes at radioactive ion beam facilities. Especially for heavy elements the laser wavelengths required for efficient resonant laser ionization are not only element dependent, but also vary to small degrees from isotope to isotope. Since the first operation of an actinide target at ISAC-TRIUMF in 2008, the demand for neutron-rich isotopes far away from stability has steadily increased. Those isotopes often have very low production rates so that often only a few ions per second are released. I

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20

Kapler, Ryan W. "The elastic scattering of deuterons on ¹³²Sn." 2009. http://etd.utk.edu/2009/May2009Theses/KaplerRyanW.pdf.

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21

"2009." Universität Potsdam, 2010. http://hdl.handle.net/10155/127.

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Table of Contents Mergers and Acquisitions (M&AS) by R&D Intensive Firms Shantanu Dutta and Vinod Kumar Page 1 to 37 Chinas Stock Market Integration with a Leading Power and a Close Neighbor Zheng Yi, Chen Heng and Wing-Keung Wong Page 38 to 74 The Nexus between Analyst Forecast Dispersion and Expected Returns Surrounding Stock Market Crashes Terence Tai-Leung Chong and Xiaolei Wang Page 75 to 93 Corporate Risk Disclosure and Corporate Governance Kaouthar Lajili Page 94 to 117 Models for Risk Aggregation and Sensitivity Analysis: an Application to Bank Economic Capital Hulusi I

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22

Vetter, Ulrich. "Lanthanide Doped Wide Band Gap Semiconductors: Intra-4f Luminescence and Lattice Location Studies." Doctoral thesis, 2003. http://hdl.handle.net/11858/00-1735-0000-0006-B555-B.

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