Nuclear Physics and Atomic Energy

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


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Nucl. Phys. At. Energy 2009, volume 10, issue 3, pages 269-272.
Section: Nuclear Physics.
Received: 20.05.2009; Published online: 30.09.2009.
PDF Full text (ua)
https://doi.org/10.15407/jnpae2009.03.269

Precise measurements of the energy of gamma-transitions in 99Tc

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-rays from the decay of 99Mo have been performed with γ-spectrometer. Using these data, the energies of levels 1/2+ 920.586 keV, 3/2- 1004.050 keV and 3/2+ 1141.875 keV of 99Tc were determined with the accuracy up to a few electron-volts.

Keywords: radioactivity, 99Mo, γ-spectra, HPGe-detectors, measurements E(γ), energy of levels.

References:

1. Gardulski P. L., Wiedenbeck M. L. Precision energy measurements of high energy gamma rays occurring in the decays of 46Sc, 82Br, 99Mo and 110Agm. Nucl. Instr. Methods 105 (1972) 169. https://doi.org/10.1016/0029-554X(72)90509-5

2. Helmer R. G., Cafferey A. J., Gehrke R. J., Greenwood R. C. γ-ray energies from the decay of 99Mo, 133Ba and 210Pb. Nucl. Instr. Methods 188 (1981) 671. https://doi.org/10.1016/0029-554X(81)90281-0

3. Lacasse W. M., Hamilton J. H. The M and N subshell ratios of the 2.17 keV transition in 99mTc. Nucl. Phys. A 171 (1971) 641. https://doi.org/10.1016/0375-9474(71)90610-5

4. Герасимов В. Н., Зеленков А. Г., Кулаков В. М. и др. Исследование спектра конверсионных электронов перехода 2.1726 кэВ в 99mTc, помещенном в матрицу металлического технеция. Ядерная физика 34 (1981) 3.

5. Tuli J. K., Reed G., Singh B. Nuclear Data Sheets for 99Tc. Nucl. Data Sheets 91 (2001) 1. https://doi.org/10.1006/ndsh.2001.0011

6. Lederer C. M., Shirley V. S. Table of Isotopes (New York: J. Wiley, 1978) 1632 p.

7. 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

8. 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

9. 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 (Киев, 1986) 48 с.