Study of the ${{^{25}}}$Mg(d,p)${{^{26}}}$Mg reaction to constrain the ${{^{25}}}$Al(p,${\gamma }$)${{^{26}}}$Si resonant reaction rates in nova burning conditions

Hamill, Conor B.; Woods, P. J.; Kahl, D.; Longland, R.; Greene, J. P.; Marshall, C.; Portillo, F.; Setoodehnia, K.

doi:10.1140/epja/s10050-020-00052-9

Study of the $${{^{25}}}$$Mg(d,p)$${{^{26}}}$$Mg reaction to constrain the $${{^{25}}}$$Al(p,$${\gamma }$$)$${{^{26}}}$$Si resonant reaction rates in nova burning conditions

Journal Article · Wed Feb 05 00:00:00 EST 2020 · European Physical Journal. A

DOI:https://doi.org/10.1140/epja/s10050-020-00052-9· OSTI ID:1609146

Hamill, Conor B. ^[1]; Woods, P. J. ^[1]; Kahl, D. ^[1]; Longland, R. ^[2]; Greene, J. P. ^[3]; Marshall, C. ^[2]; Portillo, F. ^[2]; Setoodehnia, K. ^[4]

Univ. of Edinburgh (United Kingdom)
North Carolina State Univ., Raleigh, NC (United States); Duke Univ., Durham, NC (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
European X-ray Free Electron Laser GmbH, Schenefeld (Germany); North Carolina State Univ., Raleigh, NC (United States); Duke Univ., Durham, NC (United States)

The rate of the ²⁵Al( p,γ)²⁶Si reaction is one of the few key remaining nuclear uncertainties required for predicting the production of the cosmic γ-ray emitter ²⁶Al in explosive burning in novae. This reaction rate is dominated by three key resonances (J^π = 0⁺, 1⁺ and 3⁺) in ²⁶Si. Only the 3⁺ resonance strength has been directly constrained by experiment. A high resolution measurement of the ²⁵Mg(d, p) reaction was used to determine spectroscopic factors for analog states in the mirror nucleus, ²⁶Mg. A first spectroscopic factor value is reported for the 0⁺ state at 6.256 MeV, and a strict upper limit is set on the value for the 1⁺ state at 5.691 MeV, that is incompatible with an earlier (⁴He, ³He) study. These results are used to estimate proton partial widths, and resonance strengths of analog states in ²⁶Si contributing to the ²⁵Al( p,γ)²⁶Si reaction rate in nova burning conditions.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: AC02-06CH11357; FG02-97ER41041; SC0017799

OSTI ID:: 1609146

Alternate ID(s):: OSTI ID: 22873943

Journal Information:: European Physical Journal. A, Journal Name: European Physical Journal. A Journal Issue: 2 Vol. 56; ISSN 1434-6001

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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