Original scientific paper

Study of 194Ir via thermal neutron capture and (d,p) reactions

M. Balodis ; Nuclear Research Center, LV-2169 Salaspils, Latvia
P. Prokofjevs ; Nuclear Research Center, LV-2169 Salaspils, Latvia
N. Kramere ; Nuclear Research Center, LV-2169 Salaspils, Latvia
L. Simonova ; Nuclear Research Center, LV-2169 Salaspils, Latvia
J. Berzins ; Nuclear Research Center, LV-2169 Salaspils, Latvia
T. Krasta ; Nuclear Research Center, LV-2169 Salaspils, Latvia
R. Georgii ; Physik-Department, E18, Technische Universität München, D-85748 Garching bei München, Germany
T. von Egidy ; Physik-Department, E18, Technische Universität München, D-85748 Garching bei München, Germany
J. Klora ; Physik-Department, E18, Technische Universität München, D-85748 Garching bei München, Germany
H. Lindner ; Physik-Department, E18, Technische Universität München, D-85748 Garching bei München, Germany
U. Mayerhofer ; Physik-Department, E18, Technische Universität München, D-85748 Garching bei München, Germany
A. Walter ; Physik-Department, E18, Technische Universität München, D-85748 Garching bei München, Germany
J. A. Cizewski ; Rutgers University, Piscataway, NJ 08855, USA
G. G. Colvin ; Institute Laue-Langevin, F-38042 Grenoble, France
H. G. Boerner ; Institute Laue-Langevin, F-38042 Grenoble, France
P. Geltenbort ; Institute Laue-Langevin, F-38042 Grenoble, France
F. Hoyler ; Institute Laue-Langevin, F-38042 Grenoble, France
S. A. Kerr ; Institute Laue-Langevin, F-38042 Grenoble, France
K. Schreckenbach ; Institute Laue-Langevin, F-38042 Grenoble, France
A. Raemy ; Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland
J. C. Dousse ; Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland
J. Kern ; Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland
W. Schwitz ; Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland
I. A. Kondurov ; Petersburg Nuclear Physics Institute, 188350 Gatchina, Russia
Yu. E. Loginov ; Petersburg Nuclear Physics Institute, 188350 Gatchina, Russia
P. A. Sushkov ; Petersburg Nuclear Physics Institute, 188350 Gatchina, Russia
S. Brant ; Department of Physics, University of Zagreb, HR-10000 Zagreb, Croatia
V. Paar ; Department of Physics, University of Zagreb, HR-10000 Zagreb, Croatia
V. Lopac ; Department of Physics, Faculty of Chemical Engineering and Technology, University of Zagreb, HR-10000 Zagreb, Croatia

Abstract

Levels of 194Ir were studied using thermal neutron capture reaction. A pair spectrometer was used to measure the high-energy γ-ray spectrum from thermal-neutron capture in enriched 193Ir target over the energy range 4640 - 6100 keV. The low-energy γ-radiation from the reaction was studied with crystal diffraction spectrometers, and conversion electrons were observed with magnetic spectrometers. The high-sensitivity measurements at the Grenoble reactor, evaluated for transition energies up to 500 keV, are compared with lower-sensitivity measurements at the Wuerenlingen and Salaspils reactors. The comparison helped to obtain reliable isotopic identification for a number of 194Ir lines. The multipolarity admixtures for 29 γ-transitions were determined on the basis of conversion lines from different electron subshells. Prompt and delayed γ-γ coincidences were measured using semiconductor and scintillation detectors. The 193Ir(d,p) high-resolution spectra, observed with a magnetic spectrometer, are given. All these data contributed to establishing a detailed level scheme of 194Ir. Additional data and the interpretation of the results in terms of current models will be presented in a forthcoming paper.

Keywords

Hrčak ID:

303808

URI

https://hrcak.srce.hr/303808

Publication date:

1.3.1998.

Article data in other languages: croatian

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