Beta decay and deformation : studies of neutron-rich nuclei with 106≤A≤114
This thesis deals with beta decay studies conducted at the Department of Physics, University of Jyväskylä. The studied neutron rich nuclei with 106≤A≤114 were produced in a proton induced fission of 238U and they were mass separated by using an on-line mass separation facility IGISOL. In this thesis, the main emphasis has been put on the fundamental properties of beta decay in the wide range of nuclei from the deformed Zr-region to the almost spherical Pd-nuclei. These studies have produced new beta decay data in the region of interest and led to the identification of seven new isotopes. The obtained experimental information have been compared to the global models of atomic masses and beta decay rates. In addition, this thesis includes macroscopic-microscopic calculations for the beta decay properties as a function of deformation and nucleon number. The comparison of the experimental and calculated data have been used to extract information about the interplay between deformation and
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ISBN
978-951-39-9449-5ISSN Hae Julkaisufoorumista
0075-465XJulkaisuun sisältyy osajulkaisuja
- Artikkeli I: Jokinen, A., Äystö, J., Dendooven, P., Eskola, K., Janas, Z., Jauho, P. P., Leino, M. E., Pannonen, J. M., Penttilä, H., Rykaczewski K. and Taskinen, P. (1991). Spin-flip β − decay of even-even deformed nuclei110Ru and112Ru. Zeitschrift für Physik A Hadrons and Nuclei, 340, 21–28. DOI: 10.1007/BF01284476
- Artikkeli II: Äystö, J., Astier, A., Enqvist, T., Eskola, K., Janas, Z., Jokinen, A., Kratz, K.-L., Leino, M., Penttilä, H., Pfeiffer, B., and Zylicz, J. (1992). Discovery of rare neutron-rich Zr, Nb, Mo, Tc, and Ru isotopes in fission: Test of β half-life predictions very far from stability. Physical Review Letters, 69, 1167. DOI: 10.1103/PhysRevLett.69.1167
- Artikkeli III: Jokinen, A., Äystö, J., Jauho, P. P., Leino, M., Pannonen, J. M., Penttilä, H., Eskola, K. and Janas, Z. (1992). Beta decay of 114Ru and Qβ systematics for n-rich Ru isotopes. Nuclear Physics A, 549(3), 420-430. DOI: 10.1016/0375-9474(92)90088-2
- Artikkeli IV: Jokinen, A., Äystö, J., Eskola, K., Enqvist, T., Janas, Z., Jauho, P. P., Leino, M., Pannonen, J. M., Penttilä, H. and Zylicz, J. (1992). New neutron-rich isotopes in the zirconium-topalladium region; Garnow-Teller decay of deformed nuclei. Inst. Phys. Conf. Ser. No 132: Section 5, 563-568. Paper presented at 6th International Conference on Nuclei Far From Stability & 9th International Conference on Atomic Masses and Fundamental Constants, Bernkastel-Kues, Germany, 1992.
- Artikkeli V: Jokinen, A., Jauho, P. P., Enqvist, T., Eskola, K., Leino, M., Pannonen, J. M., Penttilä, H. and Äystö, J. (1995). Beta decay of 108Mo and of neighbouring even Mo-isotopes. Nuclear Physics A, 584(3), 489-508.DOI: 10.1016/0375-9474(94)00524-Q
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