The level structure of neutron-deficient ('121)Xe, ('123)Xe and ('124)Xe was studied. These levels were populated in the (beta)-decay of ('121)Cs, ('123)Cs and ('124)Cs respectively, which were produced by the proton bombardment of isotopically enriched ('124)Xe gas targets. Using (gamma)- and (beta)-spectroscopy techniques the level structures of these isotopes were obtained. / High-spin levels of ('122)Xe and ('124)Xe populated in the ((alpha),4n(gamma)) reaction on enriched tellurium targets, were investigated. Gamma-ray-multiplicity filter, and angular distribution measurements have been carried out. The observation of the backbending of the ground band, and of the two-quasi-particle high-spin bands in ('122,124)Xe, is the first in xenon nuclei. These bands were interpreted in the framework of the rotation-alignment picture. / A theoretical interpretation of ('116-130)Xe nuclei was performed using the Interacting Boson Approximation. Also the levels in ('121)Xe were interpreted using the Interacting Boson-Fermion Model.

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Radioactive xenon gas is a fission product released in the detonation of nuclear devices that can be detected in atmospheric samples far from the detonation site. In order to improve the capabilities of radioxenon detection systems, this work produces [beta-gamma] coincidence spectra of individual isotopes of radioxenon. Previous methods of radioxenon production consisted of the removal of mixed isotope samples of radioxenon gas released from fission of contained fissile materials such as ²³⁵U. In order to produce individual samples of the gas, isotopically enriched stable xenon gas is irradiated with neutrons. The detection of the individual isotopes is also modeled using Monte Carlo simulations to produce spectra. The experiment shows that samples of [superscript 131m]Xe, ¹³³Xe, and ¹³⁵Xe with a purity greater than 99% can be produced, and that a sample of [superscript 133m]Xe can be produced with a relatively low amount of ¹³³Xe background. These spectra are compared to models and used as essential library data for the Spectral Deconvolution Analysis Tool (SDAT) to analyze atmospheric samples of radioxenon for evidence of nuclear events. / text