Ratio of S factors for (p, γ) reactions on 12C and 13C at astrophysically relevant energies

C. D. Nesaraja; C. R. Brune; B. T. Crowley; J. H. Kelley; S. O. Nelson; R. M. Prior; K. Sabourov; D. R. Tilley; A. Tonchev; H. R. Weller

doi:10.1103/PhysRevC.64.065804

Ratio of S factors for (p, γ) reactions on ¹²C and ¹³C at astrophysically relevant energies

C. D. Nesaraja, C. R. Brune, B. T. Crowley, J. H. Kelley, S. O. Nelson, R. M. Prior, K. Sabourov, D. R. Tilley, A. Tonchev, H. R. Weller

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Abstract

We present measurements of the ¹²C(p, γ₀)¹³N/¹³C(p, γ₀)¹⁴N S factor ratio at E_p=160 keV. The overall result of 0.33±0.03 is in good agreement with the value of this ratio obtained from previous experimental values of the S factors for the ¹²C(p, γ₀) ¹³N and the ¹³C(p, γ₀) ¹⁴N reactions. A value for the total S factor ratio of S[¹²C(p, γ_total)]/S[¹³C(p, γ_total)] = 0.24±0.03 is computed by correcting the ¹³C(p, γ₀) S factor for transitions to the other intermediate states. The direct + resonance model calculation of this ratio and the impact on the CNO cycle are also explored.

Original language	English
Article number	065804
Pages (from-to)	658041-658047
Number of pages	7
Journal	Physical Review C - Nuclear Physics
Volume	64
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.64.065804
State	Published - Dec 2001
Externally published	Yes

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title = "Ratio of S factors for (p, γ) reactions on 12C and 13C at astrophysically relevant energies",

abstract = "We present measurements of the 12C(p, γ0)13N/13C(p, γ0)14N S factor ratio at Ep=160 keV. The overall result of 0.33±0.03 is in good agreement with the value of this ratio obtained from previous experimental values of the S factors for the 12C(p, γ0) 13N and the 13C(p, γ0) 14N reactions. A value for the total S factor ratio of S[12C(p, γtotal)]/S[13C(p, γtotal)] = 0.24±0.03 is computed by correcting the 13C(p, γ0) S factor for transitions to the other intermediate states. The direct + resonance model calculation of this ratio and the impact on the CNO cycle are also explored.",

author = "Nesaraja, {C. D.} and Brune, {C. R.} and Crowley, {B. T.} and Kelley, {J. H.} and Nelson, {S. O.} and Prior, {R. M.} and K. Sabourov and Tilley, {D. R.} and A. Tonchev and Weller, {H. R.}",

year = "2001",

month = dec,

doi = "10.1103/PhysRevC.64.065804",

language = "English",

volume = "64",

pages = "658041--658047",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

number = "6",

}

TY - JOUR

T1 - Ratio of S factors for (p, γ) reactions on 12C and 13C at astrophysically relevant energies

AU - Nesaraja, C. D.

AU - Brune, C. R.

AU - Crowley, B. T.

AU - Kelley, J. H.

AU - Nelson, S. O.

AU - Prior, R. M.

AU - Sabourov, K.

AU - Tilley, D. R.

AU - Tonchev, A.

AU - Weller, H. R.

PY - 2001/12

Y1 - 2001/12

N2 - We present measurements of the 12C(p, γ0)13N/13C(p, γ0)14N S factor ratio at Ep=160 keV. The overall result of 0.33±0.03 is in good agreement with the value of this ratio obtained from previous experimental values of the S factors for the 12C(p, γ0) 13N and the 13C(p, γ0) 14N reactions. A value for the total S factor ratio of S[12C(p, γtotal)]/S[13C(p, γtotal)] = 0.24±0.03 is computed by correcting the 13C(p, γ0) S factor for transitions to the other intermediate states. The direct + resonance model calculation of this ratio and the impact on the CNO cycle are also explored.

AB - We present measurements of the 12C(p, γ0)13N/13C(p, γ0)14N S factor ratio at Ep=160 keV. The overall result of 0.33±0.03 is in good agreement with the value of this ratio obtained from previous experimental values of the S factors for the 12C(p, γ0) 13N and the 13C(p, γ0) 14N reactions. A value for the total S factor ratio of S[12C(p, γtotal)]/S[13C(p, γtotal)] = 0.24±0.03 is computed by correcting the 13C(p, γ0) S factor for transitions to the other intermediate states. The direct + resonance model calculation of this ratio and the impact on the CNO cycle are also explored.

UR - http://www.scopus.com/inward/record.url?scp=4243814469&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.64.065804

DO - 10.1103/PhysRevC.64.065804

M3 - Article

AN - SCOPUS:4243814469

SN - 0556-2813

VL - 64

SP - 658041

EP - 658047

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 6

M1 - 065804

ER -

Ratio of S factors for (p, γ) reactions on ¹²C and ¹³C at astrophysically relevant energies

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