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[en] A full information on the direct use of the HADAH program for building the nuclear decay schemes on the basis of γ-γ-coincidences. HADAH program is written in FORTRAN language and is designed for the CDC-6500 computer. It may work in two modes with or without knowledge of the initial part of decay scheme. Calculations performed for 16 sets of data show that 85-100 per cent of the found levels and energy level transition schemes are identical with the published ones

[en] Problems connected with computer construction of γ-ray decay schemes on the basis of spectroscopic data, are treated with special attention to unambiquity and correctness of the obtained decay schemes. A general definition of unambiguous and correct decay scheme is suggested and the rules, allowing to construct it within the framework of the incomplete trial and error method, are postulated. The algorithms, based upon these rules, has been tested by means of computer program prototypes on the CDC-6500 computer. Nineteen decay schemes have been constructed on the basis of earlier published data, and found energy of levels and transition locations are in perfect agreement with the published ones

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[en] Investigation into the gamma ray- and γγ-coincidence spectra following the ¹⁶⁴Lu → ¹⁶⁴Yb decay is continued. The gamma ray spectra were measured with the Ge(Li)-detector with the 2.8 keV resolution at Esub(γ)=1332 keV. The gamma transition energies were defined at simultaneous measuring of gamma emission from ¹⁶⁴Lu and calibration sources. The half-lives are defined for some of the ¹⁶⁴Lu gamma-rays. For the most intensive 123.27 and 262.22 keV gamma rays the half-life is measured to be Tsub(1/2)=3.12+-0.03 min. The weighted mean value of Tsub(1/2) is equal to 3.12+-0.02 min for all observed 54 transitions. The energies and relative intensities of gamma rays from the ¹⁶⁴Lu decay are summarized in the table for the 123.27-1809.5 keV energy range. 54 transitions were identified, of these 27 were observed for the first time. The ¹⁶⁴Lu → ¹⁶⁴Yb decay scheme is proposed. The scheme is complemented with some new levels as compared to other papers. Spin and parity are defined unambiguously for some of the levels. Ratios of reduced probabilities of γ-transitions from the levels of γ- and β-rotary bands to the levels of the ground state band are calculated

[en] The decay of ¹⁶⁵Lu (TsUb(1/2)=11.8 min) has been investigated. Lu neutron-deficient isotopes were produced by the spallation reaction induced with 660 MeV at a tantalum. γ-ray spectra were measured by means of spectrometers with Ge(Li) detectors, spectra of internal conversion electrons-using an iron-free beta-spectrometer and a beta-spectrograph. 125 γ-ray transitions are observed, the multipolities of 17 γ-transitions are found. Spectra of γ-ray coincidences with internal conversion electrons of L39.2, K80.4, K86.7, K87.5, K120.6, K174 2 and K203.7 ¹⁶⁵Lu are investigated. Spectra of γγ-coincidences were measured on a setup with two Ge(Li)-detectors. The decay scheme of ¹⁶⁵Lu→¹⁶⁵Yb is proposed involving 26 excited states in ¹⁶⁵Yb on the basis of analysis of spectra of γ-rays, internal conversion electrons and coincidence spectra

No abstract available

[en] Spectra of gamma-rays and three-dimensional gamma-gamma-time-coincidences have been investigated at the ¹⁶⁴Lu decay. On the basis of results analysis a scheme of ¹⁶⁴Yb excited states has been proposed

[en] The purpose of the study is construction of ²⁰⁷At nucleus decay scheme. The previously obtained by authors experimental data on energy and intensity of γ-quanta and ²⁰⁷At decay conversion electrons; transitions multipolarity eγ coincidences as well as other authors known data. When constructing the decay scheme by means of programs for LEVEL-SDS and HADAH computers, 12 datum levels of ²⁰⁷Po, energies of which are determined on the experiment base have been initially designated. Finally, the scheme of 26 levels, presented in a table form is proposed. In the table presented are energies and spin, initial levels, parity, energies and multipolarities of γ-transitions discharging these levels, finite level energies, level population in decay percent and lgft. From 240 transitions in the decay scheme 167 are not placed, total intensity of which constitutes 43+-7% of decays. The discussion of the scheme obtained and comparison with the data available are carried out. It is pointed out that in spite of the greater as compared with other studies information volume an obvious lack of data for constructing a more detailed decay scheme is felt

No abstract available