Production of quasi-stellar neutron field at explosive stellar temperatures

Friedman, M.

doi:10.1140/epja/s10050-020-00170-4

Cited by 4 publications

(4 citation statements)

References 30 publications

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“…ref. [6]). Currently, there are no experimental rates for the 26 Al(𝑛, 𝛼) reaction above 1 GK, and the uncertainties for the 26 Al(𝑛, 𝑝) are on the order of factor 3 or even higher (see ref.…”

Section: Jinst 19 P04016mentioning

confidence: 99%

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A Micromegas-based gaseous detector for neutron-induced charged-particle reaction studies in nuclear astrophysics

Yadav,

Green,

Friedman

2024

J. Inst.

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The quasistellar neutron spectrum produced via 7Li (p, n)7Be reaction at a proton energy of 1.912 MeV has been extensively studied and employed reaction for neutron-induced reaction studies. We are working towards using this reaction at various proton energies from 1.9 MeV to 3.6 MeV to produce a neutron field at a temperature range of ∼ 1.5–3.5 GK to conduct measurements of neutron-induced charge particle reaction cross sections on various unstable nuclei at explosive stellar temperatures. In this paper, we are reporting our design and simulation study with regards to experimental set-up and a gaseous detector with a segmented Micromegas detector for conducting neutron-induced charge particle reactions studies for nuclei of astrophysics importance, for example, 26Al(p, n)26Mg, 26Al(n, α)23Na and 40K(p, n)40Ar, 40K(n, α)37Cl reactions. We plan to perform our experiments with a 10-μA proton beam at the Physikalisch Technische Bundesanstalt facility (PTB, Germany), with a Micromegas-based gaseous detector under construction as discussed in the paper.

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Section: Jinst 19 P04016mentioning

confidence: 99%

“…In ref. [6] we discussed a novel approach to overcome those limitations by utilizing the 7 Li(𝑝, 𝑛) reaction at varying proton energies in the range of 1.9-3.6 MeV on a thick lithium target to carry out neutron-induced charged-particle reactions cross-sections measurements in the temperature region of 1.5-3.5 GK.…”

Section: Introductionmentioning

confidence: 99%

A Micromegas-based gaseous detector for neutron-induced charged-particle reaction studies in nuclear astrophysics

Yadav,

Green,

Friedman

2024

J. Inst.

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“…Note that the activation approach is not feasible for most isotopes of interest, which naturally decay via electron capture or β + , which are indistinguishable from the (n, p) reaction by activation measurements. Our novel experimental approach to study this cross-section measurements at stellar temperatures using 7 Li(p, n) 7 Be reaction as a neutron source with three-four orders of magnitude higher neutron intensities as compared to TOF facilities is described in detailed in a recent article [9]. We will use this method to study (n, p) and (n, α) cross-section at explosive stellar temperature, for various nuclei for which experimental data is poor or nonexistent.…”

Section: Introductionmentioning

confidence: 99%

Neutron-induced charged-particle reaction studies in nuclear astrophysics with a Micromegas based gaseous detector

2023

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Neutron-induced charged-particle reaction studies on various unstable nuclei play an important role in understanding various nucleosynthesis processes occurring in explosive astrophysical scenarios. We are pursuing a novel experimental approach to study neutron-induced charge particle cross-sections for various unstable nuclei at effective temperatures of 1.5-3.5 GK using the 7Li(p, n)7Be reaction as a neutron source with three orders of magnitude higher neutron intensities with respect to currently available neutron time-of-flight facilities. We plan to perform our experiments with a 10-µA proton beam at the Physikalisch Technische Bundesanstalt facility (PTB, Germany), with a Micromegas based gaseous detector being developed.

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“…Our proposed method is based on a series of cross section measurements at different proton energies with proper weighting to obtain the MACS values at any given temperature in this range. The method to produce the neutron field, MACS values at different temperature and required computation tool is described in detail in a recent publication [9]. We will use this method to study (n, p) and (n, α) cross-sections at explosive stellar temperatures, for various nuclei for which experimental data is poor or even non-existent.…”

Section: Introductionmentioning

confidence: 99%

Novel experimental techniques for neutron induced charge particle reaction studies in nuclear astrophysics

Yadav

Friedman

2022

EPJ Web Conf.

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Neutron induced reaction studies on various unstable and short-lived nuclei play a very important role in understanding the various nucleosynthesis processes occuring in astrophysics scenario. We discuss here our approach to study neutron induced charge particle cross-section for various unstable and short-lived nuclei at effective temperatures of ~1.5-3.5 GK using the 7Li(p, n) reaction as a neutron source with ﬁve orders of magnitude higher neutron intensities with respect to currently available neutron time-of-ﬂight facilities, using SARAF accelarator and Liquid Lithium Target (LiLiT) facility.

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Production of quasi-stellar neutron field at explosive stellar temperatures

Cited by 4 publications

References 30 publications

A Micromegas-based gaseous detector for neutron-induced charged-particle reaction studies in nuclear astrophysics

A Micromegas-based gaseous detector for neutron-induced charged-particle reaction studies in nuclear astrophysics

Neutron-induced charged-particle reaction studies in nuclear astrophysics with a Micromegas based gaseous detector

Novel experimental techniques for neutron induced charge particle reaction studies in nuclear astrophysics

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