[en] The nuclear spin of ¹⁸⁵Au, I = 5/2, and the hyperfine separation of ¹⁸⁸Au, Δγ = +- 2992(30) MHz, have been measured with the atomic-beam magnetic resonance method. The spin of ¹⁸⁵Au indicates a deformed nuclear shape in the ground state. The small magnetic moment of ¹⁸⁸Au is close in value to those of the heavier I = 1 gold isotopes ^190192194Au, being located in a typical transition region. (Auth.)

[en] Thermal Ionisation Mass Spectrometry is an internationally recognised technique for determining the isotope ratio and concentrations of different elements including actinides with the highest precision and accuracy

[en] Nuclear structure studies are central to both many-body physics and quantum mechanics, and our goal is to seek a description of these many-nucleon systems in terms of a few degrees of freedom and by using simple quantum mechanical models. Particular emphasis is placed on the region 180 <= A <= 210, and on odd-mass nuclei where the unpaired nucleon can be considered as a probe of the core shape (and softness) and of pairing and few nucleon correlations (via the blocking effect) in the core. (orig./AH)

[en] The Strutinsky method for estimating nuclear masses of experimentally unknown isotopes is briefly discussed emphasizing the validity of the expansion of the energy when stopped after the first order terms

[en] Analysis of ⁹⁹Tc in the environment have been interested because of a long term radioecological effect of ⁹⁹Tc due to its long half-life. One of the problems on ⁹⁹Tc analysis is a tracer since there is no stable isotopes in Tc. Development of ⁹⁹Tc determination by ICP-MS enables us to use ^95mTc as a yield monitor. The radiochemical yield is evaluated by gamma spectrometry of ^95mTc and ⁹⁹Tc is determined by mass spectrometry without any interference by ^95mTc tracer added to the sample. We produced ^95mTc without ⁹⁹Tc by an irradiation of metal Nb with 40 MeV alpha particles using cyclotron. The 0.1 mm thickness Nb foil stacked 4 pieces was irradiated for 21 h at beam current of 1.5 μC, dissolved in a mixture of HNO₃ and HF, and ^95mTc was isolated and purified chemically. No contamination of ⁹⁹Tc was confirmed on ^95mTc fraction. (author)

No abstract available

[en] The calibration factor of 0.3 cc ionization chamber for ¹⁹²Ir energy is derived. This is used for the determination of measured AKR of ¹⁹²Ir HDR (high dose rate) brachytherapy source

[en] Short communication. 4 refs

[en] Uranium isotope ratio ²³⁴U/²³⁸U was measured in different phases after acid leaching of dictyoneme shale of the quarries in Estonia. Whilst total radioactive equilibrium between uranium isotopes as a whole takes place, significant deviations of the ²³⁴U/²³⁸U ratio from a unity are observed in different mineral components of the shale. It is demonstrated that ²³⁴U redistribution stems from ²³⁴Th (²³⁴U) recoil atom emission from the surface layer rich in uranium into adjacent lean ore phase. 4 refs.; 2 tabs

[en] The philosophy behind the experimental approach is described. A list of reports on completed work is given. Comments are offered on work on Au, Tl, and Hg isotopes, neutron-deficient nuclei with 50 less than or equal to (Z,N) less than or equal to 82, and neutron-rich nuclei with 28 less than or equal to Z less than or equal to 50 and 50 less than or equal to N less than or equal to 82. No data are presented, as this work has been reported at length in numerous reports and journal articles. Experimental equipment and procedures and data analysis are summarized briefly