| dc.contributor.author | Nummela, Saara | |
| dc.date.accessioned | 2023-01-12T09:09:54Z | |
| dc.date.available | 2023-01-12T09:09:54Z | |
| dc.date.issued | 2001 | |
| dc.identifier.isbn | 978-951-39-9477-8 | |
| dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/84964 | |
| dc.description.abstract | This thesis deals with the experimental study of exotic neutron-rich nuclei. Three N~20 nuclei close to the so-called island of inversion have been studied via beta decay at the ISOLDE facility at CERN. The low energy level scheme of ³⁴Si (N=20) has been confirmed and the first level schemes for ³⁵Si (N=21) and ³³Mg (N=21) have been proposed. Single particle energies for ³⁵Si have been determined according to which the effective interaction in the sd-fp shell-model has been modified and comparison between theory and experiment is given for different neutron-rich isotopes. The ground state of ³³3Mg has been assigned as Jπ3/2⁺, manifesting the inversion of states in the island of inversion. In addition, superasymmetric fission yields have been obtained for 30 MeV proton induced fission of ²³⁸U at the IGISOL mass separator facility at the Accelerator Laboratory of the University of Jyväskylä. A velocity filter has been designed and built in connection with the IGISOL beam line in order to separate double charged ions. | en |
| dc.relation.ispartofseries | Jyväskylän yliopisto. Fysiikan laitos. Research report | |
| dc.relation.haspart | <b>Artikkeli I:</b> Hankonen, S., Dendooven, P., Huikari, J., Jokinen, A., Kolhinen, V., Lhersonneau, G., Nieminen, A., Peräjärvi, K., Rubchenya, V. A., Trzaska, W. H., Wang, J. C. and Äystö, J. (1999). Production of neutron-rich nuclei with A <80 in superasymmetric fission at IGISOL. <i>Acta Physica Polonica B, 30, 677.</i> | |
| dc.relation.haspart | <b>Artikkeli II:</b> Nummela, S., Baumann, P., Caurier, E., Dessagne, P., Jokinen, A., Knipper, A., Scornet, G. L., Miehé, C., Nowacki, F., Oinonen, M., Radivojevic, Z., Ramdhane, M., Walter, G., Äystö, J., & Collaboration, I. (2001). Spectroscopy of 34,35Si by beta decay : sd-fp shell gap and single-particle states. <i>Physical Review C, 63(4), Article 044316.</i> DOI: <a href="https://doi.org/10.1103/PhysRevC.63.044316"target="_blank">10.1103/PhysRevC.63.044316</a> | |
| dc.relation.haspart | <b>Artikkeli III:</b> Nummela, S., Nowacki, F., Baumann, P., Caurier, E., Cederkäll, J., Courtin, S., Dessagne, P., Jokinen, A., Knipper, A., Scornet, G. L., Lyapin, L. G., Miehé, C., Oinonen, M., Poirier, E., Radivojevic, Z., Ramdhane, M., Trzaska, W., Walter, G., Äystö, J., & Collaboration, I. (2001). Intruder features in the island of inversion : The 33Mg case. <i>Physical Review C, 64(5), Article 054313.</i> DOI: <a href="https://doi.org/10.1103/PhysRevC.64.054313"target="_blank">10.1103/PhysRevC.64.054313</a> | |
| dc.relation.haspart | <b>Artikkeli IV:</b> Nummela, S., Heikkinen, P., Dendooven, P., Nieminen, A., Huikari, J., Rinta-Antila, S., Jokinen, A., Äystö, J., & Rubchenya, V. (2002). Wien filter for cooled low-energy radioactive ion beams. <i>Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 481(1–3), 718-730.</i> DOI: <a href="https://doi.org/10.1016/s0168-9002(01)01362-6"target="_blank">10.1016/s0168-9002(01)01362-6</a> | |
| dc.title | Studies of neutron-rich nuclei close to magicity | |
| dc.type | Diss. | |
| dc.identifier.urn | URN:ISBN:978-951-39-9477-8 | |
| dc.date.digitised | 2023 | |
