Measurement of the 25Al(𝑑,𝑛)⁢ 26Si reaction and impact on the 25Al⁢(𝑝,𝛾)⁢ 26Si reaction rate

Temanson, E.; Baker, J.; Baby, L. T.; Hanselman, K.; Höflich, P.; Kuvin, S. A.; McCann, G. W.; Volya, A.; Wiedenhöver, I.

doi:10.1103/PhysRevC.108.065804

Measurement of the ²⁵Al(𝑑,𝑛)⁢ ²⁶Si reaction and impact on the ²⁵Al⁢(𝑝,𝛾)⁢ ²⁶Si reaction rate

Journal Article · Thu Dec 14 00:00:00 EST 2023 · Physical Review. C

DOI:https://doi.org/10.1103/PhysRevC.108.065804· OSTI ID:2887691

^[1]; Baker, J. ^[1]; ^[1]; Hanselman, K. ^[1]; Höflich, P. ^[1]; Kuvin, S. A. ^[2]; ^[1]; Volya, A. ^[1]; Wiedenhöver, I. ^[1]

Florida State University, Tallahassee, FL (United States)
Florida State University, Tallahassee, FL (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

The ²⁵Al(p,γ)²⁶Si reaction plays a key role in nucleosynthesis pathways that influence the galactic abundance of ²⁶Al. A more precise determination of the proton strength of the lowest ℓ = 0 proton resonance in ²⁶Si is needed to improve reaction-rate calculations. This work measures the ²⁵Al(d,n)²⁶Si proton-transfer reaction in inverse kinematics using a radioactive ion beam at RESOLUT, determining excitation energies and cross sections for the lowest ℓ = 0 resonance associated with the 3⁺₃ state at 5.92(2) MeV. Coupled-reaction-channels calculations (FRESCO) are used to extract the ℓ = 0 spectroscopic factor and the corresponding proton width, yielding Γₚ = 2.19(45) eV and a (p,γ) resonance strength of 26(10) meV. This resonance is found to dominate the ²⁵Al(p,γ)²⁶Si reaction rate above 0.2 GK.

View Accepted Manuscript (DOE)

Research Organization:: Florida State University, Tallahassee, FL (United States); Texas A&M University Cyclotron Institute, College Station, TX (United States)

Sponsoring Organization:: National Science Foundation; National Science Foundation (NSF); USDOE; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0003841; SC0009883

OSTI ID:: 2887691

Alternate ID(s):: OSTI ID: 2480793

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 6 Vol. 108; ISSN 2469-9985; ISSN 2469-9993

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Measurement of the 25Al(𝑑,𝑛)⁢ 26Si reaction and impact on the 25Al⁢(𝑝,𝛾)⁢ 26Si reaction rate

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Measurement of the ²⁵Al(𝑑,𝑛)⁢ ²⁶Si reaction and impact on the ²⁵Al⁢(𝑝,𝛾)⁢ ²⁶Si reaction rate