Astrophysically important Si26 states studied with the Si28(p,t)Si26 reaction. II. Spin of the 5.914-MeV Si26 level and galactic Al26 production

D. W. Bardayan; J. A. Howard; J. C. Blackmon; C. R. Brune; K. Y. Chae; W. R. Hix; M. S. Johnson; K. L. Jones; R. L. Kozub; J. F. Liang; E. J. Lingerfelt; R. J. Livesay; S. D. Pain; J. P. Scott; M. S. Smith; J. S. Thomas; D. W. Visser

doi:10.1103/PhysRevC.74.045804

Astrophysically important Si26 states studied with the Si28(p,t)Si26 reaction. II. Spin of the 5.914-MeV Si26 level and galactic Al26 production

D. W. Bardayan, J. A. Howard, J. C. Blackmon, C. R. Brune, K. Y. Chae, W. R. Hix, M. S. Johnson, K. L. Jones, R. L. Kozub, J. F. Liang, E. J. Lingerfelt, R. J. Livesay, S. D. Pain, J. P. Scott, M. S. Smith, J. S. Thomas, D. W. Visser

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Abstract

The Si28(p,t)Si26 reaction has been studied to resolve a controversy surrounding the properties of the Si26 level at 5.914 MeV and its contribution to the Al25(p,γ)Si26 reaction rate in novae, which affects interpretations of galactic Al26 observations. Recent studies have come to contradictory conclusions regarding the spin of this level (0+ or 3+), with a 3+ assignment implying a large contribution by this level to the Al25(p,γ)Si26 reaction rate. We have extended our previous study [Bardayan, Phys. Rev. C 65, 032801(R) (2002)] to smaller angles and find the angular distribution of tritons populating the 5.914-MeV level in the Si28(p,t)Si26 reaction to be consistent with either a 2+ or 3+ assignment. We have calculated reaction rates under these assumptions and used them in a nova nucleosynthesis model to examine the effects of the remaining uncertainties in the Al25(p,γ)Si26 rate on Al26 production in novae.

Original language	English
Article number	045804
Journal	Physical Review C - Nuclear Physics
Volume	74
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.74.045804
State	Published - 2006

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Bardayan, D. W., Howard, J. A., Blackmon, J. C., Brune, C. R., Chae, K. Y., Hix, W. R., Johnson, M. S., Jones, K. L., Kozub, R. L., Liang, J. F., Lingerfelt, E. J., Livesay, R. J., Pain, S. D., Scott, J. P., Smith, M. S., Thomas, J. S., & Visser, D. W. (2006). Astrophysically important Si26 states studied with the Si28(p,t)Si26 reaction. II. Spin of the 5.914-MeV Si26 level and galactic Al26 production. Physical Review C - Nuclear Physics, 74(4), Article 045804. https://doi.org/10.1103/PhysRevC.74.045804

@article{4ff557eb3f834befa0e7a887645c13c8,

title = "Astrophysically important Si26 states studied with the Si28(p,t)Si26 reaction. II. Spin of the 5.914-MeV Si26 level and galactic Al26 production",

abstract = "The Si28(p,t)Si26 reaction has been studied to resolve a controversy surrounding the properties of the Si26 level at 5.914 MeV and its contribution to the Al25(p,γ)Si26 reaction rate in novae, which affects interpretations of galactic Al26 observations. Recent studies have come to contradictory conclusions regarding the spin of this level (0+ or 3+), with a 3+ assignment implying a large contribution by this level to the Al25(p,γ)Si26 reaction rate. We have extended our previous study [Bardayan, Phys. Rev. C 65, 032801(R) (2002)] to smaller angles and find the angular distribution of tritons populating the 5.914-MeV level in the Si28(p,t)Si26 reaction to be consistent with either a 2+ or 3+ assignment. We have calculated reaction rates under these assumptions and used them in a nova nucleosynthesis model to examine the effects of the remaining uncertainties in the Al25(p,γ)Si26 rate on Al26 production in novae.",

author = "Bardayan, \{D. W.\} and Howard, \{J. A.\} and Blackmon, \{J. C.\} and Brune, \{C. R.\} and Chae, \{K. Y.\} and Hix, \{W. R.\} and Johnson, \{M. S.\} and Jones, \{K. L.\} and Kozub, \{R. L.\} and Liang, \{J. F.\} and Lingerfelt, \{E. J.\} and Livesay, \{R. J.\} and Pain, \{S. D.\} and Scott, \{J. P.\} and Smith, \{M. S.\} and Thomas, \{J. S.\} and Visser, \{D. W.\}",

year = "2006",

doi = "10.1103/PhysRevC.74.045804",

language = "English",

volume = "74",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

number = "4",

}

Bardayan, DW, Howard, JA, Blackmon, JC, Brune, CR, Chae, KY, Hix, WR, Johnson, MS, Jones, KL, Kozub, RL, Liang, JF, Lingerfelt, EJ, Livesay, RJ, Pain, SD, Scott, JP, Smith, MS, Thomas, JS & Visser, DW 2006, 'Astrophysically important Si26 states studied with the Si28(p,t)Si26 reaction. II. Spin of the 5.914-MeV Si26 level and galactic Al26 production', Physical Review C - Nuclear Physics, vol. 74, no. 4, 045804. https://doi.org/10.1103/PhysRevC.74.045804

TY - JOUR

T1 - Astrophysically important Si26 states studied with the Si28(p,t)Si26 reaction. II. Spin of the 5.914-MeV Si26 level and galactic Al26 production

AU - Bardayan, D. W.

AU - Howard, J. A.

AU - Blackmon, J. C.

AU - Brune, C. R.

AU - Chae, K. Y.

AU - Hix, W. R.

AU - Johnson, M. S.

AU - Jones, K. L.

AU - Kozub, R. L.

AU - Liang, J. F.

AU - Lingerfelt, E. J.

AU - Livesay, R. J.

AU - Pain, S. D.

AU - Scott, J. P.

AU - Smith, M. S.

AU - Thomas, J. S.

AU - Visser, D. W.

PY - 2006

Y1 - 2006

N2 - The Si28(p,t)Si26 reaction has been studied to resolve a controversy surrounding the properties of the Si26 level at 5.914 MeV and its contribution to the Al25(p,γ)Si26 reaction rate in novae, which affects interpretations of galactic Al26 observations. Recent studies have come to contradictory conclusions regarding the spin of this level (0+ or 3+), with a 3+ assignment implying a large contribution by this level to the Al25(p,γ)Si26 reaction rate. We have extended our previous study [Bardayan, Phys. Rev. C 65, 032801(R) (2002)] to smaller angles and find the angular distribution of tritons populating the 5.914-MeV level in the Si28(p,t)Si26 reaction to be consistent with either a 2+ or 3+ assignment. We have calculated reaction rates under these assumptions and used them in a nova nucleosynthesis model to examine the effects of the remaining uncertainties in the Al25(p,γ)Si26 rate on Al26 production in novae.

AB - The Si28(p,t)Si26 reaction has been studied to resolve a controversy surrounding the properties of the Si26 level at 5.914 MeV and its contribution to the Al25(p,γ)Si26 reaction rate in novae, which affects interpretations of galactic Al26 observations. Recent studies have come to contradictory conclusions regarding the spin of this level (0+ or 3+), with a 3+ assignment implying a large contribution by this level to the Al25(p,γ)Si26 reaction rate. We have extended our previous study [Bardayan, Phys. Rev. C 65, 032801(R) (2002)] to smaller angles and find the angular distribution of tritons populating the 5.914-MeV level in the Si28(p,t)Si26 reaction to be consistent with either a 2+ or 3+ assignment. We have calculated reaction rates under these assumptions and used them in a nova nucleosynthesis model to examine the effects of the remaining uncertainties in the Al25(p,γ)Si26 rate on Al26 production in novae.

UR - https://www.scopus.com/pages/publications/33749821497

U2 - 10.1103/PhysRevC.74.045804

DO - 10.1103/PhysRevC.74.045804

M3 - Article

AN - SCOPUS:33749821497

SN - 0556-2813

VL - 74

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 045804

ER -

Astrophysically important Si26 states studied with the Si28(p,t)Si26 reaction. II. Spin of the 5.914-MeV Si26 level and galactic Al26 production

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