Decay studies of exotic nuclei near the Z=N line
Abstract
This thesis is based on beta-decay studies performed during 1994-1997 in three mass-separator facilities in Europe. Most of the experiments have been done at the ISOLDE facility at CERN. In addition, experiments were carried out at the GSI On-Line Mass Separator in Darmstadt and the Heavy-ion Ion-Guide Isotope Separator On-Line (HIGISOL) in Jyväskylä. The production methods used were fusion-evaporation reactions at GSI and JYFL as well as fragmentation and spallation at ISOLDE. Production of refractory elements from Y to Mo was proved successful using the heavy-ion fusion-evaporation reactions in connection with the ion-guide technique at JYFL. These complementary facilities offered means to obtain new information on several beta-decaying isotopes along Z = N line in the region A = 55 - 85 by using beta-delayed gamma and proton spectroscopy. The Garnow-Teller strengths for the low-energy final states could be determined for four isotopes leading to a comparison of the results of the beta-decay and charge-exchange reaction studies in the case of 58Zn. The systematics of the ground-state Garnow-Teller matrix elements could be extended for the mirror decays in fp shell. The proton drip line was reached for Rb isotopes and new information was obtained for refractory elements above A = 80. In addition to the nuclear structure studies, the output of these studies can be straightly used as an input for the astrophysical reaction flow calculations.
Main Author
Format
Theses
Doctoral thesis
Published
1998
Series
ISBN
978-951-39-9737-3
The permanent address of the publication
https://urn.fi/URN:ISBN:978-951-39-9737-3Use this for linking
ISSN
0075-465X
Language
English
Published in
Research report / Department of Physics, University of Jyväskylä
Contains publications
- Artikkeli I: Jokinen, A., Oinonen, M., Äystö, J., Baumann, P., Didierjean, F., Hoff, P., Huck, A., Knipper, A., Marguier, G., Novikov, Yu. N., Popov, A. V., Ramdhane, M., Seliverstov, D. M., Van Duppen, P., Walter, G. and the ISOLDE Collaboration (1996). Proton instability of73Rb. Zeitschrift für Physik A Hadrons and Nuclei, 355, 227–230. DOI: 10.1007/BF02769690
- Artikkeli II: Oinonen, M., Jokinen, A., Äystö, J., Baumann, P., Didierjean, F., Honkanen, A., Huck, A., Huyse, M., Knipper, A., Marguier, G., Novikov, Yu., Popov, A., Ramdhane, M., Seliverstov, D. M., Van Duppen, P., Walter, G. and the ISOLDE Collaboration (1997). Beta decay of the proton-rich Tz = -112 nucleus, 71Kr. Physical Review C, 56, 745. DOI: 10.1103/PhysRevC.56.745
- Artikkeli III: Jokinen, A., Oinonen, M., Äystö, J., Baumann, P., Dendooven, P., Didierjean, F., Fedoseyev, V., Huck, A., Jading, Y., Knipper, A., Koizumi, M., Koster, U., Lettry, J., Lipas, P., Liu, W., Mishin, V., Ramdhane, M., Ravn, H., Roeckl, E., Sebastian, V., Walter, G. and the ISOLDE Collaboration. (1998). Study of the beta decay of a MT= -1 nucleus 58Zn using selective laser ionization. The European Physical Journal A - Hadrons and Nuclei, 3, 271–276. DOI: 10.1007/s100500050177
- Artikkeli IV: Oinonen, M., Baumann, P., Dendooven, P., Fujita, Y., G6rska, M., Grawe, H., Hu, Z., Janas, Z., Jokinen, A., Kirchner, R., Klepper, O., Knipper, A., Liu, W., Penttilä, H., Plochocki, A., Ramdhane, M., Roeckl, E., Walter, G. and Äystö, J. (1999). Beta decay of 61Ga. The European Physical Journal A - Hadrons and Nuclei, 5, 151–156. DOI: 10.1007/s100500050271
- Artikkeli V: Oinonen, M., Beraud, R., Canchel, G., Chabanat, E., Dendooven, P., Emsallem, A., Hankonen, S., Honkanen, A., Huikari, J., Jokinen, A., Lhersonneau, G., Miehé, Ch., Nieminen, A., Novikov, Yu., Penttilä, H., Peräjärvi, K., Popov, A., Seliverstov, D. M., Wang, J. C. and Äystö, J. (1998). Production of refractory elements close to the Z=N line using the ion-guide technique. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 416(2–3), 485-492. DOI: 10.1016/S0168-9002(98)00613-5
License
