Level structure of Si26 and its implications for the astrophysical reaction rate of Al25(p,γ)Si26

D. Seweryniak; M.P. Carpenter; R.V.F. Janssens; T. Lauritsen; C.J. Lister; J. Shergur; S. Sinha; P.J. Woods; T. Davinson; D.G. Jenkins; A. Woehr

doi:10.1103/PhysRevC.75.062801

Level structure of Si26 and its implications for the astrophysical reaction rate of Al25(p,γ)Si26

D. Seweryniak
, M.P. Carpenter
, R.V.F. Janssens
, T. Lauritsen
, C.J. Lister
, J. Shergur
, S. Sinha
, P.J. Woods
, T. Davinson
, D.G. Jenkins
, A. Woehr

School of Physics and Astronomy

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

Abstract

A study of the level structure of Si26 using in-beam γ-ray spectroscopy is presented. A full level scheme is derived incorporating all states lying below the proton threshold energy. The results are in good agreement with shell model predictions and one-to-one correspondence is found with states in the mirror nucleus Mg26. Additionally, a γ-decay branch is observed from a state at 5677.0(17) keV, which is assigned to a 1+ resonance important in the astrophysical reaction Al25(p,γ)Si26. The newly derived resonance energy, Er=159.2(35) keV, has the effect of decreasing the reaction rate at the novae ignition temperature of 0.1 GK by a factor of 2 when compared with the previous most precise measurement of this state. © 2007 The American Physical Society.

Original language	English
Journal	Physical Review C
Volume	75
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.75.062801
Publication status	Published - 8 Jun 2007

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title = "Level structure of Si26 and its implications for the astrophysical reaction rate of Al25(p,γ)Si26",

abstract = "A study of the level structure of Si26 using in-beam γ-ray spectroscopy is presented. A full level scheme is derived incorporating all states lying below the proton threshold energy. The results are in good agreement with shell model predictions and one-to-one correspondence is found with states in the mirror nucleus Mg26. Additionally, a γ-decay branch is observed from a state at 5677.0(17) keV, which is assigned to a 1+ resonance important in the astrophysical reaction Al25(p,γ)Si26. The newly derived resonance energy, Er=159.2(35) keV, has the effect of decreasing the reaction rate at the novae ignition temperature of 0.1 GK by a factor of 2 when compared with the previous most precise measurement of this state. {\textcopyright} 2007 The American Physical Society.",

author = "D. Seweryniak and M.P. Carpenter and R.V.F. Janssens and T. Lauritsen and C.J. Lister and J. Shergur and S. Sinha and P.J. Woods and T. Davinson and D.G. Jenkins and A. Woehr",

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doi = "10.1103/PhysRevC.75.062801",

language = "English",

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TY - JOUR

T1 - Level structure of Si26 and its implications for the astrophysical reaction rate of Al25(p,γ)Si26

AU - Seweryniak, D.

AU - Carpenter, M.P.

AU - Janssens, R.V.F.

AU - Lauritsen, T.

AU - Lister, C.J.

AU - Shergur, J.

AU - Sinha, S.

AU - Woods, P.J.

AU - Davinson, T.

AU - Jenkins, D.G.

AU - Woehr, A.

PY - 2007/6/8

Y1 - 2007/6/8

N2 - A study of the level structure of Si26 using in-beam γ-ray spectroscopy is presented. A full level scheme is derived incorporating all states lying below the proton threshold energy. The results are in good agreement with shell model predictions and one-to-one correspondence is found with states in the mirror nucleus Mg26. Additionally, a γ-decay branch is observed from a state at 5677.0(17) keV, which is assigned to a 1+ resonance important in the astrophysical reaction Al25(p,γ)Si26. The newly derived resonance energy, Er=159.2(35) keV, has the effect of decreasing the reaction rate at the novae ignition temperature of 0.1 GK by a factor of 2 when compared with the previous most precise measurement of this state. © 2007 The American Physical Society.

AB - A study of the level structure of Si26 using in-beam γ-ray spectroscopy is presented. A full level scheme is derived incorporating all states lying below the proton threshold energy. The results are in good agreement with shell model predictions and one-to-one correspondence is found with states in the mirror nucleus Mg26. Additionally, a γ-decay branch is observed from a state at 5677.0(17) keV, which is assigned to a 1+ resonance important in the astrophysical reaction Al25(p,γ)Si26. The newly derived resonance energy, Er=159.2(35) keV, has the effect of decreasing the reaction rate at the novae ignition temperature of 0.1 GK by a factor of 2 when compared with the previous most precise measurement of this state. © 2007 The American Physical Society.

UR - https://www.scopus.com/pages/publications/34547328800

U2 - 10.1103/PhysRevC.75.062801

DO - 10.1103/PhysRevC.75.062801

M3 - Article

SN - 0556-2813

VL - 75

JO - Physical Review C

JF - Physical Review C

IS - 6

ER -

Level structure of Si26 and its implications for the astrophysical reaction rate of Al25(p,γ)Si26

Abstract

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