Study of gamma transitions and level scheme of 94Nb using the 93Nb(nth,2γ) reaction

David Knezevic; Nikola Jovancevic; Anatoly M. Sukhovoj; Aleksandar Dragic; Liudmila V. Mitsyna; László Szentmiklósi; Tamás Belgya; Stephan Oberstedt; Miodrag Krmar; Ilija Arsenic; Vu D. Cong

doi:10.1016/j.nuclphysa.2019.121645

Study of gamma transitions and level scheme of ⁹⁴Nb using the ⁹³Nb(n_th,2γ) reaction

David Knezevic, Nikola Jovancevic, Anatoly M. Sukhovoj, Aleksandar Dragic, Liudmila V. Mitsyna, László Szentmiklósi, Tamás Belgya, Stephan Oberstedt, Miodrag Krmar, Ilija Arsenic, Vu D. Cong

Magyar Tudományos Akadémia

Research output: Article

Abstract

In this paper, we present new spectroscopic information on Nb94 from the Nb93(n_th,2γ) reaction. The intensities of the two-step gamma cascades in the compound nucleus Nb94 to the final levels, with excitation energies below 400 keV, were derived from experimental spectra recorded at the PGAA facility of Centre for Energy Research (MTA EK), Budapest, Hungary. The intensities, energies of primary and secondary transitions of 216 energy-resolved cascades as well as intermediate cascade levels were determined. The part of the level scheme of Nb94 was obtained from analyzing the intensity spectra of the strongest cascades. The results were compared to the existing data in the ENSDF database. We concluded that 27 primary transitions, 29 intermediate cascades levels as well as 183 secondary transitions can be recommended as new nuclear data.

Original language	English
Article number	121645
Journal	Nuclear Physics A
Volume	993
DOIs	https://doi.org/10.1016/j.nuclphysa.2019.121645
Publication status	Published - jan. 2020

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Knezevic, D., Jovancevic, N., Sukhovoj, A. M., Dragic, A., Mitsyna, L. V., Szentmiklósi, L., Belgya, T., Oberstedt, S., Krmar, M., Arsenic, I., & Cong, V. D. (2020). Study of gamma transitions and level scheme of ⁹⁴Nb using the ⁹³Nb(n_th,2γ) reaction. Nuclear Physics A, 993, [121645]. https://doi.org/10.1016/j.nuclphysa.2019.121645

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title = "Study of gamma transitions and level scheme of 94Nb using the 93Nb(nth,2γ) reaction",

abstract = "In this paper, we present new spectroscopic information on Nb94 from the Nb93(nth,2γ) reaction. The intensities of the two-step gamma cascades in the compound nucleus Nb94 to the final levels, with excitation energies below 400 keV, were derived from experimental spectra recorded at the PGAA facility of Centre for Energy Research (MTA EK), Budapest, Hungary. The intensities, energies of primary and secondary transitions of 216 energy-resolved cascades as well as intermediate cascade levels were determined. The part of the level scheme of Nb94 was obtained from analyzing the intensity spectra of the strongest cascades. The results were compared to the existing data in the ENSDF database. We concluded that 27 primary transitions, 29 intermediate cascades levels as well as 183 secondary transitions can be recommended as new nuclear data.",

keywords = "Gamma cascades, Gamma spectrometry, Level scheme, Thermal neutron capture",

author = "David Knezevic and Nikola Jovancevic and Sukhovoj, {Anatoly M.} and Aleksandar Dragic and Mitsyna, {Liudmila V.} and L{\'a}szl{\'o} Szentmikl{\'o}si and Tam{\'a}s Belgya and Stephan Oberstedt and Miodrag Krmar and Ilija Arsenic and Cong, {Vu D.}",

year = "2020",

month = jan,

doi = "10.1016/j.nuclphysa.2019.121645",

language = "English",

volume = "993",

journal = "Nuclear Physics A",

issn = "0375-9474",

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T1 - Study of gamma transitions and level scheme of 94Nb using the 93Nb(nth,2γ) reaction

AU - Knezevic, David

AU - Jovancevic, Nikola

AU - Sukhovoj, Anatoly M.

AU - Dragic, Aleksandar

AU - Mitsyna, Liudmila V.

AU - Szentmiklósi, László

AU - Belgya, Tamás

AU - Oberstedt, Stephan

AU - Krmar, Miodrag

AU - Arsenic, Ilija

AU - Cong, Vu D.

PY - 2020/1

Y1 - 2020/1

N2 - In this paper, we present new spectroscopic information on Nb94 from the Nb93(nth,2γ) reaction. The intensities of the two-step gamma cascades in the compound nucleus Nb94 to the final levels, with excitation energies below 400 keV, were derived from experimental spectra recorded at the PGAA facility of Centre for Energy Research (MTA EK), Budapest, Hungary. The intensities, energies of primary and secondary transitions of 216 energy-resolved cascades as well as intermediate cascade levels were determined. The part of the level scheme of Nb94 was obtained from analyzing the intensity spectra of the strongest cascades. The results were compared to the existing data in the ENSDF database. We concluded that 27 primary transitions, 29 intermediate cascades levels as well as 183 secondary transitions can be recommended as new nuclear data.

AB - In this paper, we present new spectroscopic information on Nb94 from the Nb93(nth,2γ) reaction. The intensities of the two-step gamma cascades in the compound nucleus Nb94 to the final levels, with excitation energies below 400 keV, were derived from experimental spectra recorded at the PGAA facility of Centre for Energy Research (MTA EK), Budapest, Hungary. The intensities, energies of primary and secondary transitions of 216 energy-resolved cascades as well as intermediate cascade levels were determined. The part of the level scheme of Nb94 was obtained from analyzing the intensity spectra of the strongest cascades. The results were compared to the existing data in the ENSDF database. We concluded that 27 primary transitions, 29 intermediate cascades levels as well as 183 secondary transitions can be recommended as new nuclear data.

KW - Gamma cascades

KW - Gamma spectrometry

KW - Level scheme

KW - Thermal neutron capture

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