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[en] Chirality in atomic nuclei is a direct consequence of the existence of triaxial nuclear shapes. This phenomenon is known to exist in the A ∼ 130 region. We have now observed several pair of bands built upon the negative parity configuration, πg^-1_9/2 x νh_11/2, in Rh and Tc isotopes in the A ∼ 104 region which can be understood in terms of the phenomenon of chiral symmetry breaking. Results of the search for chiral bands in ¹⁰⁶Ag are presented in the current paper

[en] Exhaust systems of modern cars contain catalysts for the reduction of CO, NO_x and hydrocarbons. These catalysts are made of ceramic materials with a large surface on which platinum metals catalyse the oxidation. The catalysts contain approximately 2 g of platinum and 0.4 g of rhodium. Recently platinum is being replaced by palladium. During driving the platinum-group elements (PGEs) are expelled from the tip in fine particles and are deposited in the environment. For a projected study of emissions from cars driven on streets and highways it is important to know which elements can be measured by short time activation analysis without any chemical procedure. (author)

[en] Ru and Rd isotopes with mass numbers 107 and 108 and ¹09Rh, has been obtained from fission products. ¹07 Ru has also been prepared by the nuclear process ¹10Pd (n,α) ¹07 Ru. Beta and gamma energies of these nuclides have been studied spectropolarimetry and the gamma lines found for ¹07 Ru and ¹08Ru ( and daughter) have been very useful for the precise determination of their half-lives. ¹09Rh has been identified through its daughter ¹09Pd in the mixture of rhodium isotopes from fission products. Irradiation of natural palladium with fast neutrons has lead to an activity that may only be attributed to ¹10rh. Neither its half life nor its decay energy have been possible to determine accurately. (Author) 1 refs

[en] Currently, 31 rubidium, 35 strontium, 35 molybdenum, and 38 rhodium isotopes have been observed and the discovery of these isotopes is described here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented.

[en] In the A ∼ 100 mass region it was predicted that in some Ru and Pd nuclei terminating high-spin bands should exist and remain yrast from the low-spin (prolate) rotational states up to the termination. An experiment has been carried out with the aim to search for terminating bands in ¹⁰²Pd using the ⁷⁰Zn + ³⁶S reaction. Several terminating bands have been obtained in ¹⁰²Pd. A systematic search for terminating bands in the neighbouring ^98,99,100Ru, ^101,102Rh and ^100,101,103Pd nuclei have been carried out as well. The high-spin bands found in the studied nuclei have been interpreted using Nilsson-Strutinsky cranking calculations. (K.A.)

[en] The present paper discusses the development of a high current density (2 A x cm^-2) electrodissolution system of Rh targets that allows the solubility of rhodium fragments, powder and pieces of foils and wires in the presence of hydrochloric and chlorine gas for the production of ¹⁰³Pd. (author)

[en] The γ-decay of excited states in the neutron-deficient nucleus ⁹³Rh has been observed for the first time. The fusion-evaporation reaction ⁵⁸Ni(⁴⁰Ca,3p2n)⁹³Rh at 187 MeV beam energy was used to produce ⁹³Rh. The multidetector array NORDBALL including particle selection was used for identification. From γ γ-coincidence data a decay scheme of 23 transitions up to high angular momentum was constructed for ⁹³Rh. (author). Letter-to-the-editor

[en] The utilization of the fission products of the fission of heavy atom nuclei, preferably of xenon, palladium and rhodium isotopes, as well as tritium, and the use of possible nuclides Pm 147, Cs137, Kr 85 and Sr90 as radiation sources are considered. (HK)

No abstract available