Nuclear levels in 192Ir

doi:10.1016/0375-9474(91)90559-O

Nuclear Physics A

Volume 534, Issue 1, 11 November 1991, Pages 77-127

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Cited by (21)

Levels of two-particle and gamma bands in 192Ir
2015, Nuclear Physics A
Citation Excerpt :
For higher energies, five levels from Refs. [1,5] are included. Proposed level scheme of 192Ir includes 51 transition placements which were unknown in [1]: 44 transitions were unplaced with 7 of them having double placement. Therefore, 162 low-energy transitions are now placed in the level scheme of 192Ir (cf. Section 2.1).
Level scheme of the transitional doubly odd nucleus ¹⁹²Ir is analysed in detail up to about 530 keV energy using earlier published experimental data of neutron capture and particle transfer reactions. A number of new levels are proposed. Obtained ¹⁹²Ir level scheme is interpreted in terms of particle-plus-rotor coupling model. It is shown that the long-lived 241 year isomer of ¹⁹²Ir has spin-parity $11^{-}$ , just like the analogous states in neighbouring ^190,194Ir.
Nuclear Data Sheets for A = 192
2012, Nuclear Data Sheets
Experimental structure and decay data for all nuclei with mass A=192 (Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po, At) have been evaluated. This evaluation, covering data received by 15 June 2012, supersedes the 1998 evaluation by C. M. Baglin (Nuclear Data Sheets 84, 717 (1998), literature cutoff August 1998) and the subsequent inclusion in the ENSDF database of the new nuclide ¹⁹²At (C. M. Baglin, literature cutoff 16 May 2006). It also incorporates the current evaluation of superdeformed-band information by B. Singh. Since the last publication, ¹⁹²Ta, ¹⁹²W and ¹⁹²At have been observed, and an isomeric state has been identified in ¹⁹²Re. The ε decay of ¹⁹²Au has been studied using a multidetector array resulting in an extensively revised level scheme for ¹⁹²Pt.
Nuclear levels in 190Ir studied with the 192Os(p,3nγ) and 192Os(d,4ne-) reactions
2000, Nuclear Physics A
Nuclear levels in ¹⁹⁰Ir have been investigated with the ¹⁹²Os(p,3nγ) and ¹⁹²Os(d,4ne⁻) reactions using beams of 18–31 MeV protons and 27.8 MeV deuterons. A series of measurements, including excitation functions, γγ and e⁻e⁻coincidences, and life time measurements, was performed. From the singles measurements, a total of 140 γ rays were assigned as belonging to the ¹⁹²Os(p,3n)¹⁹⁰Ir channel. The results of the coincidence measurements show that many of these lines are multiplets. Using information from a previous isomer study and single-nucleon transfer reactions, a level scheme is proposed comprising of 112 γ rays placed between 76 levels. It is shown that most of the γ intensity arises from bands having K^π≥4⁺. Several negative-parity bands are also proposed. Calculations performed using values of ϵ and γ characteristic of the region reproduce qualitatively some aspects of the level scheme.
Level scheme of 194Ir
1998, Nuclear Physics A
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.
Nuclear data sheets for a = 192
1998, Nuclear Data Sheets
Experimental data for all nuclei with mass A=192 have been evaluated. This evaluation, covering data received by August 1, 1998, supersedes the 1991 evaluation by V. S. Shirley (Nuclear Data Sheets64,205 (1991)). It also incorporates the evaluation of¹⁹²Ir (73.827 d) decay prepared by Edgardo Browne as part of an ongoing international collaboration engaged in the evaluation of T_1/2and radiation energy and intensity data for selected radionuclides (see comment with¹⁹²Ir (73.827 d) ϵ decay and β⁻decay data sets).
Geometric and algebraic descriptions of the 193Ir nucleus
1997, Nuclear Physics A

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^☆: The work was supported, in part, by the Swiss National Science Foundation and by the Bundesministerium für Forschung und Technologie (BMFT), Bonn, under contract No. 06 TM 178/I. It was performed, in part, under the auspices of the US Department of Energy by the Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48 and by the Brookhaven National Laboratory under contract No. DE-AC02-76CH00016.

⁵: The authors thank the crew of the SAPHIR reactor in Würenlingen for their patient collaboration. They gratefully acknowledge the valuable assistance of M.R. Beitins, V.A. Bodarenko and J.J. Tambergs during the (n, e⁻) experiments and for the data analysis. They thank Drs. R. Eichler and Th. von Ledebur (ETH, Zurich) for their participation in the curved-crystal spectrometer experiments. They wish to thank Dr. P. Maier-Komor and K. Nacke for the preparation of the targets used in the (d, p) and (d, t) experiments.

¹: Present address: Nestec, Lab de Physique, Vers-Chez-Lez-Blancs,CH-1000 Laussanne 26,Switzerland

²: Present address: Institute Federal de Metrologie, CH-3084 Wabern,Switzerland.

³: Present Address: EP Division, CERN, CH-1211 Geneva 23, Switzerland

⁴: Permanent address: Osterreichische Akademier Westinchaft, A-1090 Wien Australla.

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Nuclear levels in 192Ir☆

First page preview

Nucl. Phys.

Nucl. Data Sheets

Nucl. Phys.

Nucl. Phys.

Nucl. Phys.

Nucl. Instr. Meth.

Nucl. Instr. Meth.

Izv. Akad. Nauk SSSR (ser. fiz.)

Nucl. Instr. Meth.

Proc. of the 5th All-Union Conf. on Neutron Physics

Nucl. Instr. Meth.

Z. Phys.

Report of the Physics Department, University of Fribourg, Switzerland, IPF-SP-19

J. of Phys.

Z. Phys.

In-beam nuclear spectroscopy

Phys. Rev. Lett.

Phys. Rev. Lett.

Teor. Mat. Fiz.

Nucl. Phys.

Nucl. Phys.

Phys. Lett.

Phys. Rev.

Phys. Rev.

Phys. Rev. Lett.

Can. J. Phys.

Helv. Phys. Acta

Phys. Rev. Lett.

Helv. Phys. Acta

Nuclear levels in ¹⁹²Ir☆