Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English   Periodicity: 4 times per year   Open access peer reviewed journal

Full text (ua)

A. P. Lashko, T. N. Lashko

Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine

Abstract: High-precision measurements of the energies of reference γ-transitions from the decay of ¹⁷⁵Hf have been performed with the γ-spectrometer. Using this data, the energies of levels and corresponding deexciting γ-rays in ¹⁷⁵Lu were determined with the precision up to a few electron-volts. To a great extent they are in a good agreement with other experimental data but are more precise.

Keywords: radioactivity, ¹⁷⁵Hf, γ-spectra, HPGe-detectors, measurements E(γ), energy of levels.

1. Hatch E. N., Boehm F., Marmier P., DuMond J. W. M. Rotational and intrinsic levels in Tm¹⁶⁹ and Lu¹⁷⁵. Phys. Rev. 104 (1956) 745. https://doi.org/10.1103/PhysRev.104.745

2. Harmatz B., Handley T. H. Nuclear spectroscopy of neutron-deficient hafnium and rare earth activities. Nucl. Phys. 81 (1966) 481. https://doi.org/10.1016/0029-5582(66)90226-4

3. Johansen K. H., Bengtson B., Hansen P. G., Hornshoj P. The 1/2^- [541] rotational band in ¹⁷⁵Lu and the Q-value of the electron-capture decay. Nucl. Phys. A 133 (1969) 213. https://doi.org/10.1016/0375-9474(69)90460-6

4. Pratt W. W. Low-intensity transition in the decay of ¹⁷⁵Hf. Phys. Rev. C 13 (1976) 2591. https://doi.org/10.1103/PhysRevC.13.2591

5. Singh K., Gill T. S., Singh K. K-capture probabilities in the decay of ¹⁷⁵Hf. J. Phys. Soc. Jpn. 57 (1988) 3762. https://doi.org/10.1143/JPSJ.57.3762

6. Reierson J. D., Nelson G. C., Hatch E. N. Gamma-ray measurements with a bent-crystal spectrometer. Nucl. Phys. A 153 (1970) 109. https://doi.org/10.1016/0375-9474(70)90759-1

7. Lashko A. P., Lashko T. M. Precise measurement of the energy of gamma-rays from the decay of ¹⁸¹Hf. Ukr. J. Phys. 54 (2009) 678.

8. Лашко А. П., Лашко Т. М. Визначення магнітних моментів ядерних станів за надтонким зсувом конверсійних ліній. Укр. фіз. журнал 54 (2009) 337.

9. Лашко А. П., Лашко Т. Н. Высокоточные измерения энергии ядерных состояний, возбуждающихся в радиоактивном распаде. Ядерна фізика та енергетика 7 (2006) 131. https://jnpae.kinr.kyiv.ua/18(2)/Articles_PDF/jnpae-2006-2(18)-0131-Lashko_fin.pdf

10. Лашко А. П., Лашко Т. Н. Анализ погрешностей измерений энергии гамма-лучей на полупроводниковых спектрометрах. Ядерна фізика та енергетика 8 (2007) 121. https://jnpae.kinr.kyiv.ua/20(2)/Articles_PDF/jnpae-2007-2(20)-0121-Lashko.pdf

11. Булгаков В. В., Гаврилюк В. И., Лашко А. П. и др. Магнитный бета-спектрометр высокого разрешения ИЯИ АН УССР. Препр. АН УССР. Ин-т ядерных исслед.; КИЯИ-86-33 (Київ, 1986) 48 с.

12. Helmer R. G., Van der Leun C. Recommended standards for γ-ray energy calibration. Nucl. Instr. Meth. Phys. Res. A 422 (1999) 525. https://doi.org/10.1016/S0168-9002(98)01079-1

13. Helmer R. G., Van der Leun C. Recommended standards for γ-ray energy calibration (1999). Nucl. Instr. Meth. Phys. Res. A 450 (2000) 35. https://doi.org/10.1016/S0168-9002(00)00252-7

14. Basunia M. Shamsuzzoha. Nuclear data sheets for A = 175. Nucl. Data Sheets 102 (2004) 719. https://doi.org/10.1016/j.nds.2004.09.002