Excitation functions of neutron-induced threshold reactions in Au, Bi, Ta measured using 30–94 MeV quasi mono-energetic neutron sources

Jitka Vrzalová; Antonin Krása; Petr Chudoba; Jurabek Khushvaktov; Andrej Kugler; Mitja Majerle; Martin Suchopár; Ondřej Svoboda; Pavel Tichý; Vladimír Wagner

doi:10.1016/j.nuclphysa.2022.122593

Excitation functions of neutron-induced threshold reactions in Au, Bi, Ta measured using 30–94 MeV quasi mono-energetic neutron sources

Jitka Vrzalová, Antonin Krása, Petr Chudoba, Jurabek Khushvaktov, Andrej Kugler, Mitja Majerle, Martin Suchopár, Ondřej Svoboda, Pavel Tichý, Vladimír Wagner

Nuclear Systems Measurements

Research output › peer-review

Abstract

Activation measurements of neutron-induced threshold reactions were studied employing ⁷Li(p,n) quasi mono-energetic neutron sources in the neutron energy range of 30–94 MeV, where scarce experimental and evaluated data exist. A novel iterative neutron background subtraction approach is presented for the first time and its successful application is demonstrated on the analysis of the excitation functions of (n,xn) reactions in Au, Bi and Ta with x up to 10. Some of them are on the High Priority Nuclear Data Request List (HPRL). A comprehensive comparison of the measured data with theoretical predictions using the TALYS code is presented. While the calculated cross-sections agree with the measurements for lower-threshold reactions, severe discrepancies are observed for higher (n,xn) reactions for any of the TALYS model parameters.

Original language	English
Article number	122593
Number of pages	18
Journal	Nuclear Physics A
Volume	1031
DOIs	https://doi.org/10.1016/j.nuclphysa.2022.122593
State	Published - Mar 2023

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.nuclphysa.2022.122593

Cite this

Vrzalová, J., Krása, A., Chudoba, P., Khushvaktov, J., Kugler, A., Majerle, M., Suchopár, M., Svoboda, O., Tichý, P., & Wagner, V. (2023). Excitation functions of neutron-induced threshold reactions in Au, Bi, Ta measured using 30–94 MeV quasi mono-energetic neutron sources. Nuclear Physics A, 1031, Article 122593. https://doi.org/10.1016/j.nuclphysa.2022.122593

@article{2924a3c8089e45f196768df021898121,

title = "Excitation functions of neutron-induced threshold reactions in Au, Bi, Ta measured using 30–94 MeV quasi mono-energetic neutron sources",

abstract = "Activation measurements of neutron-induced threshold reactions were studied employing 7Li(p,n) quasi mono-energetic neutron sources in the neutron energy range of 30–94 MeV, where scarce experimental and evaluated data exist. A novel iterative neutron background subtraction approach is presented for the first time and its successful application is demonstrated on the analysis of the excitation functions of (n,xn) reactions in Au, Bi and Ta with x up to 10. Some of them are on the High Priority Nuclear Data Request List (HPRL). A comprehensive comparison of the measured data with theoretical predictions using the TALYS code is presented. While the calculated cross-sections agree with the measurements for lower-threshold reactions, severe discrepancies are observed for higher (n,xn) reactions for any of the TALYS model parameters.",

keywords = "Neutron threshold reactions, Cross-section, Excitation function, Gamma-ray spectrometry, Nuclear level density, TALYS",

author = "Jitka Vrzalov{\'a} and Antonin Kr{\'a}sa and Petr Chudoba and Jurabek Khushvaktov and Andrej Kugler and Mitja Majerle and Martin Suchop{\'a}r and Ond{\v r}ej Svoboda and Pavel Tich{\'y} and Vladim{\'i}r Wagner",

note = "Score=10 Funding Information: The experiment was supported by the European Unio{\'n}s program EFNUDAT [grant number CTU0808214 ], by the F4E program of the Nuclear Reaction Department of the Nuclear Physics Institute [ F4E-2008-GRT-014 ] and by the project of Czech Ministry of Education, Youth and Sports [ LTT18021 ]. Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2023",

month = mar,

doi = "10.1016/j.nuclphysa.2022.122593",

language = "English",

volume = "1031",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

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T1 - Excitation functions of neutron-induced threshold reactions in Au, Bi, Ta measured using 30–94 MeV quasi mono-energetic neutron sources

AU - Vrzalová, Jitka

AU - Krása, Antonin

AU - Chudoba, Petr

AU - Khushvaktov, Jurabek

AU - Kugler, Andrej

AU - Majerle, Mitja

AU - Suchopár, Martin

AU - Svoboda, Ondřej

AU - Tichý, Pavel

AU - Wagner, Vladimír

N1 - Score=10 Funding Information: The experiment was supported by the European Uniońs program EFNUDAT [grant number CTU0808214 ], by the F4E program of the Nuclear Reaction Department of the Nuclear Physics Institute [ F4E-2008-GRT-014 ] and by the project of Czech Ministry of Education, Youth and Sports [ LTT18021 ]. Publisher Copyright: © 2022 Elsevier B.V.

PY - 2023/3

Y1 - 2023/3

N2 - Activation measurements of neutron-induced threshold reactions were studied employing 7Li(p,n) quasi mono-energetic neutron sources in the neutron energy range of 30–94 MeV, where scarce experimental and evaluated data exist. A novel iterative neutron background subtraction approach is presented for the first time and its successful application is demonstrated on the analysis of the excitation functions of (n,xn) reactions in Au, Bi and Ta with x up to 10. Some of them are on the High Priority Nuclear Data Request List (HPRL). A comprehensive comparison of the measured data with theoretical predictions using the TALYS code is presented. While the calculated cross-sections agree with the measurements for lower-threshold reactions, severe discrepancies are observed for higher (n,xn) reactions for any of the TALYS model parameters.

AB - Activation measurements of neutron-induced threshold reactions were studied employing 7Li(p,n) quasi mono-energetic neutron sources in the neutron energy range of 30–94 MeV, where scarce experimental and evaluated data exist. A novel iterative neutron background subtraction approach is presented for the first time and its successful application is demonstrated on the analysis of the excitation functions of (n,xn) reactions in Au, Bi and Ta with x up to 10. Some of them are on the High Priority Nuclear Data Request List (HPRL). A comprehensive comparison of the measured data with theoretical predictions using the TALYS code is presented. While the calculated cross-sections agree with the measurements for lower-threshold reactions, severe discrepancies are observed for higher (n,xn) reactions for any of the TALYS model parameters.

KW - Neutron threshold reactions

KW - Cross-section

KW - Excitation function

KW - Gamma-ray spectrometry

KW - Nuclear level density

KW - TALYS

U2 - 10.1016/j.nuclphysa.2022.122593

DO - 10.1016/j.nuclphysa.2022.122593

M3 - Article

SN - 0375-9474

VL - 1031

JO - Nuclear Physics A

JF - Nuclear Physics A

M1 - 122593

ER -