Measurement of the 77Se(n, γ) cross section up to 200 keV at the n_TOF Facility at CERN

n_TOF Collaboration; N.V. Sosnin; C. Lederer-Woods; R. Garg; M. Dietz; A. St. J. Murphy; S.J. Lonsdale; P. J.  Woods

doi:10.1103/PhysRevC.107.065805

Measurement of the 77Se(n, γ) cross section up to 200 keV at the n_TOF Facility at CERN

n_TOF Collaboration, N.V. Sosnin^*, C. Lederer-Woods, R. Garg, M. Dietz, A. St. J. Murphy, S.J. Lonsdale, P. J. Woods

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract / Description of output

The 77Se(n, γ) reaction is of importance for 77Se abundance during the slow neutron capture process in massive stars. We have performed a new measurement of the 77Se radiative neutron capture cross section at the Neutron Time-of-Flight facility at CERN. Resonance capture kernels were derived up to 51 keV and cross sections up to 200 keV. Maxwellian-averaged cross sections
were calculated for stellar temperatures between kT = 5 keV and kT = 100 keV, with uncertainties between 4.2% and 5.7%. Our results lead to substantial decreases of 14% and 19% in 77Se abundances produced through the slow neutron capture process in selected stellar models of 15M⊙ and 2M⊙, respectively, compared to using previous recommendation of the cross section.

Original language	English
Article number	065805
Pages (from-to)	1-9
Number of pages	9
Journal	Physical Review C
Volume	107
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.107.065805
Publication status	Published - 12 Jun 2023

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10.1103/PhysRevC.107.065805Licence: Creative Commons: Attribution (CC-BY)

RE JR PURE Addition - Nikolay Sosnin - DoneAccepted author manuscript, 115 KBLicence: Creative Commons: Attribution (CC-BY)

DoRES: Direct Measuerments of key nuclear reactions for the creation of Elements in Stars
Lederer-Woods, C.
EU government bodies
1/06/16 → 30/11/23
Project: Research
Measurements of Key Reactions for the Production and Destruction of Elements in Stars
Lederer-Woods, C.
STFC
1/12/15 → 28/11/22
Project: Research

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@article{ff8a4bed6ac04908b0ceae10496bf1e1,

title = "Measurement of the 77Se(n, γ) cross section up to 200 keV at the n_TOF Facility at CERN",

abstract = "The 77Se(n, γ) reaction is of importance for 77Se abundance during the slow neutron capture process in massive stars. We have performed a new measurement of the 77Se radiative neutron capture cross section at the Neutron Time-of-Flight facility at CERN. Resonance capture kernels were derived up to 51 keV and cross sections up to 200 keV. Maxwellian-averaged cross sectionswere calculated for stellar temperatures between kT = 5 keV and kT = 100 keV, with uncertainties between 4.2% and 5.7%. Our results lead to substantial decreases of 14% and 19% in 77Se abundances produced through the slow neutron capture process in selected stellar models of 15M⊙ and 2M⊙, respectively, compared to using previous recommendation of the cross section.",

author = "{n_TOF Collaboration} and N.V. Sosnin and C. Lederer-Woods and R. Garg and M. Dietz and Murphy, {A. St. J.} and S.J. Lonsdale and Woods, {P. J.}",

note = "Funding Information: This work was supported by the UK Science and Facilities Council (ST/M006085/1), the MSMT of the Czech Republic, the Charles University UNCE/SCI/013 project, the European Research Council ERC-2015-StG No. 677497, and by the funding agencies of the participating institutes. In line with the principles that apply to scientific publishing and the CERN policy in matters of scientific publications, the n_TOF Collaboration recognizes the work of Y. Kopatch and V. Furman (JINR, Russia), who have contributed to the experiment used to obtain the results described in this paper. Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",

year = "2023",

month = jun,

day = "12",

doi = "10.1103/PhysRevC.107.065805",

language = "English",

volume = "107",

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journal = "Physical Review C",

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T1 - Measurement of the 77Se(n, γ) cross section up to 200 keV at the n_TOF Facility at CERN

AU - n_TOF Collaboration

AU - Sosnin, N.V.

AU - Lederer-Woods, C.

AU - Garg, R.

AU - Dietz, M.

AU - Murphy, A. St. J.

AU - Lonsdale, S.J.

AU - Woods, P. J.

N1 - Funding Information: This work was supported by the UK Science and Facilities Council (ST/M006085/1), the MSMT of the Czech Republic, the Charles University UNCE/SCI/013 project, the European Research Council ERC-2015-StG No. 677497, and by the funding agencies of the participating institutes. In line with the principles that apply to scientific publishing and the CERN policy in matters of scientific publications, the n_TOF Collaboration recognizes the work of Y. Kopatch and V. Furman (JINR, Russia), who have contributed to the experiment used to obtain the results described in this paper. Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

PY - 2023/6/12

Y1 - 2023/6/12

N2 - The 77Se(n, γ) reaction is of importance for 77Se abundance during the slow neutron capture process in massive stars. We have performed a new measurement of the 77Se radiative neutron capture cross section at the Neutron Time-of-Flight facility at CERN. Resonance capture kernels were derived up to 51 keV and cross sections up to 200 keV. Maxwellian-averaged cross sectionswere calculated for stellar temperatures between kT = 5 keV and kT = 100 keV, with uncertainties between 4.2% and 5.7%. Our results lead to substantial decreases of 14% and 19% in 77Se abundances produced through the slow neutron capture process in selected stellar models of 15M⊙ and 2M⊙, respectively, compared to using previous recommendation of the cross section.

AB - The 77Se(n, γ) reaction is of importance for 77Se abundance during the slow neutron capture process in massive stars. We have performed a new measurement of the 77Se radiative neutron capture cross section at the Neutron Time-of-Flight facility at CERN. Resonance capture kernels were derived up to 51 keV and cross sections up to 200 keV. Maxwellian-averaged cross sectionswere calculated for stellar temperatures between kT = 5 keV and kT = 100 keV, with uncertainties between 4.2% and 5.7%. Our results lead to substantial decreases of 14% and 19% in 77Se abundances produced through the slow neutron capture process in selected stellar models of 15M⊙ and 2M⊙, respectively, compared to using previous recommendation of the cross section.

U2 - 10.1103/PhysRevC.107.065805

DO - 10.1103/PhysRevC.107.065805

M3 - Article

SN - 2469-9985

VL - 107

SP - 1

EP - 9

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 065805

ER -

Measurement of the 77Se(n, γ) cross section up to 200 keV at the n_TOF Facility at CERN

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DoRES: Direct Measuerments of key nuclear reactions for the creation of Elements in Stars

Measurements of Key Reactions for the Production and Destruction of Elements in Stars

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