Level scheme of 194Ir

M. Balodis; P. Prokofjevs; N. Kramere; L. Simonova; J. Berzinš; T. Krasta; J. Kern; A. Raemy; J. C. Dousse; W. Schwitz; J. A. Cizewski; G. G. Colvin; H. G. Boerner; P. Geltenbort; F. Hoyler; S. A. Kerr; K. Schreckenbach; R. Georgii; T. Von Egidy; J. Klora; H. Lindner; U. Mayerhofer; A. Walter; A. V. Murzin; V. A. Libman; I. A. Kondurov; Yu E. Loginov; P. A. Sushkov; S. Brant; V. Paar; V. Lopac

doi:10.1016/S0375-9474(98)00457-6

Level scheme of ¹⁹⁴Ir

M. Balodis
, P. Prokofjevs
, N. Kramere
, L. Simonova
, J. Berzinš
, T. Krasta
, J. Kern
, A. Raemy
, J. C. Dousse
, W. Schwitz
, J. A. Cizewski
, G. G. Colvin
, H. G. Boerner
, P. Geltenbort
, F. Hoyler
, S. A. Kerr
, K. Schreckenbach
, R. Georgii
, T. Von Egidy
, J. Klora

H. Lindner, U. Mayerhofer, A. Walter, A. V. Murzin, V. A. Libman, I. A. Kondurov, Yu E. Loginov, P. A. Sushkov, S. Brant, V. Paar, V. Lopac

Chair of Physics I

Nuclear Research Center Salaspils
University of Fribourg
Rutgers University–New Brunswick
Institut Laue-Langevin
Fachhochschule Aachen
Amoco Research Center
Technical University of Munich
Institute for Nuclear Research
Petersburg Nuclear Phys. Inst.
University of Zagreb
University of Zagreb

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

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.

Original language	English
Pages (from-to)	133-187
Number of pages	55
Journal	Nuclear Physics, Section A
Volume	641
Issue number	2
DOIs	https://doi.org/10.1016/S0375-9474(98)00457-6
State	Published - 12 Oct 1998

Keywords

Ir(n, γ), E = 2 keV, 24 keV
Measured E, I, E(ce), I(ce), γγ-coincidences
Nuclear reaction Ir(n, γ), E = thermal

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10.1016/S0375-9474(98)00457-6

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Balodis, M., Prokofjevs, P., Kramere, N., Simonova, L., Berzinš, J., Krasta, T., Kern, J., Raemy, A., Dousse, J. C., Schwitz, W., Cizewski, J. A., Colvin, G. G., Boerner, H. G., Geltenbort, P., Hoyler, F., Kerr, S. A., Schreckenbach, K., Georgii, R., Von Egidy, T., ... Lopac, V. (1998). Level scheme of ¹⁹⁴Ir. Nuclear Physics, Section A, 641(2), 133-187. https://doi.org/10.1016/S0375-9474(98)00457-6

@article{a5a8a4bf070c4f86baa36fd03241780a,

title = "Level scheme of 194Ir",

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.",

keywords = "Ir(n, γ), E = 2 keV, 24 keV, Measured E, I, E(ce), I(ce), γγ-coincidences, Nuclear reaction Ir(n, γ), E = thermal",

author = "M. Balodis and P. Prokofjevs and N. Kramere and L. Simonova and J. Berzin{\v s} and T. Krasta and J. Kern and A. Raemy and Dousse, \{J. C.\} and W. Schwitz and Cizewski, \{J. A.\} and Colvin, \{G. G.\} and Boerner, \{H. G.\} and P. Geltenbort and F. Hoyler and Kerr, \{S. A.\} and K. Schreckenbach and R. Georgii and \{Von Egidy\}, T. and J. Klora and H. Lindner and U. Mayerhofer and A. Walter and Murzin, \{A. V.\} and Libman, \{V. A.\} and Kondurov, \{I. A.\} and Loginov, \{Yu E.\} and Sushkov, \{P. A.\} and S. Brant and V. Paar and V. Lopac",

note = "Funding Information: This work was supported in part by the Swiss National Science Foundation.",

year = "1998",

month = oct,

day = "12",

doi = "10.1016/S0375-9474(98)00457-6",

language = "English",

volume = "641",

pages = "133--187",

journal = "Nuclear Physics, Section A",

issn = "0375-9474",

publisher = "Elsevier B.V.",

number = "2",

}

Balodis, M, Prokofjevs, P, Kramere, N, Simonova, L, Berzinš, J, Krasta, T, Kern, J, Raemy, A, Dousse, JC, Schwitz, W, Cizewski, JA, Colvin, GG, Boerner, HG, Geltenbort, P, Hoyler, F, Kerr, SA, Schreckenbach, K, Georgii, R, Von Egidy, T, Klora, J, Lindner, H, Mayerhofer, U, Walter, A, Murzin, AV, Libman, VA, Kondurov, IA, Loginov, YE, Sushkov, PA, Brant, S, Paar, V & Lopac, V 1998, 'Level scheme of ¹⁹⁴Ir', Nuclear Physics, Section A, vol. 641, no. 2, pp. 133-187. https://doi.org/10.1016/S0375-9474(98)00457-6

TY - JOUR

T1 - Level scheme of 194Ir

AU - Balodis, M.

AU - Prokofjevs, P.

AU - Kramere, N.

AU - Simonova, L.

AU - Berzinš, J.

AU - Krasta, T.

AU - Kern, J.

AU - Raemy, A.

AU - Dousse, J. C.

AU - Schwitz, W.

AU - Cizewski, J. A.

AU - Colvin, G. G.

AU - Boerner, H. G.

AU - Geltenbort, P.

AU - Hoyler, F.

AU - Kerr, S. A.

AU - Schreckenbach, K.

AU - Georgii, R.

AU - Von Egidy, T.

AU - Klora, J.

AU - Lindner, H.

AU - Mayerhofer, U.

AU - Walter, A.

AU - Murzin, A. V.

AU - Libman, V. A.

AU - Kondurov, I. A.

AU - Loginov, Yu E.

AU - Sushkov, P. A.

AU - Brant, S.

AU - Paar, V.

AU - Lopac, V.

N1 - Funding Information: This work was supported in part by the Swiss National Science Foundation.

PY - 1998/10/12

Y1 - 1998/10/12

N2 - 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.

AB - 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.

KW - Ir(n, γ), E = 2 keV, 24 keV

KW - Measured E, I, E(ce), I(ce), γγ-coincidences

KW - Nuclear reaction Ir(n, γ), E = thermal

UR - https://www.scopus.com/pages/publications/0032511646

U2 - 10.1016/S0375-9474(98)00457-6

DO - 10.1016/S0375-9474(98)00457-6

M3 - Article

AN - SCOPUS:0032511646

SN - 0375-9474

VL - 641

SP - 133

EP - 187

JO - Nuclear Physics, Section A

JF - Nuclear Physics, Section A

IS - 2

ER -

Level scheme of ¹⁹⁴Ir

Abstract

Keywords

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