Stellar 78,80,84,86Kr(n,?) Reactions Studied by Activation at SARAF-LiLiT, Atom Trap Trace Analysis and Decay Counting

M. Tessler; M. Paul; L. Weissman; J. Zappala; D. Baggenstos; S. Halfon; T. Heftrich; W. Jiang; A. Kreisel; Z. Lu; P. Mueller; R. Purtschert; R. Reifarth; A. Shor; D. Veltum; M. Weigand

doi:10.1088/1742-6596/1668/1/012043

Stellar ^78,80,84,86Kr(n,?) Reactions Studied by Activation at SARAF-LiLiT, Atom Trap Trace Analysis and Decay Counting

M. Tessler, M. Paul, L. Weissman, J. Zappala, D. Baggenstos, S. Halfon, T. Heftrich, W. Jiang, A. Kreisel, Z. Lu, P. Mueller, R. Purtschert, R. Reifarth, A. Shor, D. Veltum, M. Weigand

Racah Institute of Physics

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

We report on (n,?) neutron capture experiments performed with the Liquid-Lithium Target (LiLiT) and the mA-proton beam at 1.92 MeV (2-3 kW) from the Soreq Applied Research Accelerator Facility (SARAF). The setup yields high-intensity 30-keV quasi-Maxwellian neutrons (3-5 × 1010 n/s) closely reproducing the conditions of s-process stellar nucleosynthesis. The 78,80,8486Kr(n,?) reactions at the border between weak-and strong-s-process were studied. A Ti sphere filled with 107.7 mg of natural Kr gas was placed in an irradiation chamber downstream of LiLiT with a gold foil used as a neutron fluence monitor during the activation. The activities of the short-lived Kr isotopes (7985m87Kr) were measured by ? decay counting with a HPGe detector. The long-lived Kr isotopes (81,85gKr) were measured by atom counting via Atom Trap Trace Analysis (ATTA) at Argonne and Low-Level Counting (LLC) at Bern.

Original language	English
Article number	012043
Journal	Journal of Physics: Conference Series
Volume	1668
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/1668/1/012043
State	Published - 21 Oct 2020
Event	9th Nuclear Physics in Astrophysics, NPA 2019 - Frankfurt, Germany Duration: 15 Sep 2019 → 20 Sep 2019

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© Published under licence by IOP Publishing Ltd.

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Tessler, M., Paul, M., Weissman, L., Zappala, J., Baggenstos, D., Halfon, S., Heftrich, T., Jiang, W., Kreisel, A., Lu, Z., Mueller, P., Purtschert, R., Reifarth, R., Shor, A., Veltum, D., & Weigand, M. (2020). Stellar ^78,80,84,86Kr(n,?) Reactions Studied by Activation at SARAF-LiLiT, Atom Trap Trace Analysis and Decay Counting. Journal of Physics: Conference Series, 1668(1), Article 012043. https://doi.org/10.1088/1742-6596/1668/1/012043

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title = "Stellar 78,80,84,86Kr(n,?) Reactions Studied by Activation at SARAF-LiLiT, Atom Trap Trace Analysis and Decay Counting",

abstract = "We report on (n,?) neutron capture experiments performed with the Liquid-Lithium Target (LiLiT) and the mA-proton beam at 1.92 MeV (2-3 kW) from the Soreq Applied Research Accelerator Facility (SARAF). The setup yields high-intensity 30-keV quasi-Maxwellian neutrons (3-5 × 1010 n/s) closely reproducing the conditions of s-process stellar nucleosynthesis. The 78,80,8486Kr(n,?) reactions at the border between weak-and strong-s-process were studied. A Ti sphere filled with 107.7 mg of natural Kr gas was placed in an irradiation chamber downstream of LiLiT with a gold foil used as a neutron fluence monitor during the activation. The activities of the short-lived Kr isotopes (7985m87Kr) were measured by ? decay counting with a HPGe detector. The long-lived Kr isotopes (81,85gKr) were measured by atom counting via Atom Trap Trace Analysis (ATTA) at Argonne and Low-Level Counting (LLC) at Bern.",

author = "M. Tessler and M. Paul and L. Weissman and J. Zappala and D. Baggenstos and S. Halfon and T. Heftrich and W. Jiang and A. Kreisel and Z. Lu and P. Mueller and R. Purtschert and R. Reifarth and A. Shor and D. Veltum and M. Weigand",

note = "Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd.; 9th Nuclear Physics in Astrophysics, NPA 2019 ; Conference date: 15-09-2019 Through 20-09-2019",

year = "2020",

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doi = "10.1088/1742-6596/1668/1/012043",

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Tessler, M, Paul, M, Weissman, L, Zappala, J, Baggenstos, D, Halfon, S, Heftrich, T, Jiang, W, Kreisel, A, Lu, Z, Mueller, P, Purtschert, R, Reifarth, R, Shor, A, Veltum, D & Weigand, M 2020, 'Stellar ^78,80,84,86Kr(n,?) Reactions Studied by Activation at SARAF-LiLiT, Atom Trap Trace Analysis and Decay Counting', Journal of Physics: Conference Series, vol. 1668, no. 1, 012043. https://doi.org/10.1088/1742-6596/1668/1/012043

TY - JOUR

T1 - Stellar 78,80,84,86Kr(n,?) Reactions Studied by Activation at SARAF-LiLiT, Atom Trap Trace Analysis and Decay Counting

AU - Tessler, M.

AU - Paul, M.

AU - Weissman, L.

AU - Zappala, J.

AU - Baggenstos, D.

AU - Halfon, S.

AU - Heftrich, T.

AU - Jiang, W.

AU - Kreisel, A.

AU - Lu, Z.

AU - Mueller, P.

AU - Purtschert, R.

AU - Reifarth, R.

AU - Shor, A.

AU - Veltum, D.

AU - Weigand, M.

PY - 2020/10/21

Y1 - 2020/10/21

N2 - We report on (n,?) neutron capture experiments performed with the Liquid-Lithium Target (LiLiT) and the mA-proton beam at 1.92 MeV (2-3 kW) from the Soreq Applied Research Accelerator Facility (SARAF). The setup yields high-intensity 30-keV quasi-Maxwellian neutrons (3-5 × 1010 n/s) closely reproducing the conditions of s-process stellar nucleosynthesis. The 78,80,8486Kr(n,?) reactions at the border between weak-and strong-s-process were studied. A Ti sphere filled with 107.7 mg of natural Kr gas was placed in an irradiation chamber downstream of LiLiT with a gold foil used as a neutron fluence monitor during the activation. The activities of the short-lived Kr isotopes (7985m87Kr) were measured by ? decay counting with a HPGe detector. The long-lived Kr isotopes (81,85gKr) were measured by atom counting via Atom Trap Trace Analysis (ATTA) at Argonne and Low-Level Counting (LLC) at Bern.

AB - We report on (n,?) neutron capture experiments performed with the Liquid-Lithium Target (LiLiT) and the mA-proton beam at 1.92 MeV (2-3 kW) from the Soreq Applied Research Accelerator Facility (SARAF). The setup yields high-intensity 30-keV quasi-Maxwellian neutrons (3-5 × 1010 n/s) closely reproducing the conditions of s-process stellar nucleosynthesis. The 78,80,8486Kr(n,?) reactions at the border between weak-and strong-s-process were studied. A Ti sphere filled with 107.7 mg of natural Kr gas was placed in an irradiation chamber downstream of LiLiT with a gold foil used as a neutron fluence monitor during the activation. The activities of the short-lived Kr isotopes (7985m87Kr) were measured by ? decay counting with a HPGe detector. The long-lived Kr isotopes (81,85gKr) were measured by atom counting via Atom Trap Trace Analysis (ATTA) at Argonne and Low-Level Counting (LLC) at Bern.

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AN - SCOPUS:85096362669

SN - 1742-6588

VL - 1668

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012043

T2 - 9th Nuclear Physics in Astrophysics, NPA 2019

Y2 - 15 September 2019 through 20 September 2019

ER -

Stellar ^78,80,84,86Kr(n,?) Reactions Studied by Activation at SARAF-LiLiT, Atom Trap Trace Analysis and Decay Counting

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