Elsevier

Nuclear Physics A

Volume 641, Issue 2, 12 October 1998, Pages 133-187
Nuclear Physics A

Level scheme of 194Ir

https://doi.org/10.1016/S0375-9474(98)00457-6Get rights and content

Abstract

Levels of 194Ir were studied using neutron capture and (d, p) reaction spectroscopy. A pair spectrometer was used to measure the high-energy γ-ray spectrum from thermal-neutron capture in an enriched 193Ir target over the energy range 4640–6100 keV. From the same reaction, low-energy γ-radiation was studied using curved-crystal spectrometers, and conversion electrons were observed with magnetic spectrometers. Prompt and delayed γγ-coincidences were measured using semiconductor and scintillation detectors. Averaged resonance capture measurements were performed with 2 keV and 24 keV neutrons for primary transitions leading to excitation energies from 0 to 580 keV. Using 22 MeV deuterons, the 193Ir(d, p) high resolution spectra were observed with a magnetic spectrograph. The deduced nuclear level scheme of 194Ir includes 38 levels connected by 184 transitions. Unambiguous spins and parities were determined for 25 levels. The rotor-plus-particle model was used for the interpretation of the level scheme assuming a strong mixing for Nilsson configurations having identical parities and K quantum numbers. IBFFM model calculations were performed and the obtained results were compared with the experimental level scheme.

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  • Cited by (0)

    1

    Harwell Laboratory, OX 11 ORA, UK.

    2

    FH Aachen, Abteilung Jülich, Ginsterweg 1, D-52428 Jülich, Germany.

    3

    BP, Nuclear Geophysics Section Research Centre, Sunbury on Thames, UK.

    4

    Technische Universität München, D-85748 Garching, Germany.

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