The astrophysically important 3 state in Ne and the F(p, γ)Ne stellar rate

D.W. Bardayan; J.C. Blackmon; C.R. Brune; A.E. Champagne; A.A. Chen; J.M. Cox; T. Davinson; V.Y. Hansper; M.A. Hofstee; B.A. Johnson; R.L. Kozub; Z. Ma; P.D. Parker; D.E. Pierce; M.T. Rabban; A.C. Shotter; M.S. Smith; K.B. Swartz; D.W. Visser; P.J. Woods

The astrophysically important 3 state in Ne and the F(p, γ)Ne stellar rate

D.W. Bardayan, J.C. Blackmon, C.R. Brune, A.E. Champagne, A.A. Chen, J.M. Cox, T. Davinson, V.Y. Hansper, M.A. Hofstee, B.A. Johnson, R.L. Kozub, Z. Ma, P.D. Parker, D.E. Pierce, M.T. Rabban, A.C. Shotter, M.S. Smith, K.B. Swartz, D.W. Visser, P.J. Woods

School of Physics and Astronomy

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

Abstract

Knowledge of the F(p, γ)Ne reaction rate is important for understanding stellar explosions, but it was uncertain because the properties of an expected but previously unobserved 3 state in Ne were not known. This state would provide a strong s-wave resonance for the F+p system and, depending on its excitation energy, could dominate the stellar reaction rate at temperatures above 0.2 GK. We have observed this missing 3 state by measuring the H(F,p)F excitation function with a radioactive F beam at the ORNL Holifield Radioactive Ion Beam Facility (HRIBF). We find that the state lies at a center-of-mass energy of E = 599.8 ± 1.5±2.0 keV (E = 4523.7±2.9 keV) and has a width of Γ = 18±2±1 keV. The measured properties of the resonance are only consistent with a J = 3 assignment.

Original language	English
Pages (from-to)	558041-5580414
Number of pages	5022374
Journal	Physical Review C
Volume	62
Issue number	5
Publication status	Published - 1 Nov 2000

Cite this

Bardayan, D. W., Blackmon, J. C., Brune, C. R., Champagne, A. E., Chen, A. A., Cox, J. M., Davinson, T., Hansper, V. Y., Hofstee, M. A., Johnson, B. A., Kozub, R. L., Ma, Z., Parker, P. D., Pierce, D. E., Rabban, M. T., Shotter, A. C., Smith, M. S., Swartz, K. B., Visser, D. W., & Woods, P. J. (2000). The astrophysically important 3 state in Ne and the F(p, γ)Ne stellar rate. Physical Review C, 62(5), 558041-5580414.

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title = "The astrophysically important 3 state in Ne and the F(p, γ)Ne stellar rate",

abstract = "Knowledge of the F(p, γ)Ne reaction rate is important for understanding stellar explosions, but it was uncertain because the properties of an expected but previously unobserved 3 state in Ne were not known. This state would provide a strong s-wave resonance for the F+p system and, depending on its excitation energy, could dominate the stellar reaction rate at temperatures above 0.2 GK. We have observed this missing 3 state by measuring the H(F,p)F excitation function with a radioactive F beam at the ORNL Holifield Radioactive Ion Beam Facility (HRIBF). We find that the state lies at a center-of-mass energy of E = 599.8 ± 1.5±2.0 keV (E = 4523.7±2.9 keV) and has a width of Γ = 18±2±1 keV. The measured properties of the resonance are only consistent with a J = 3 assignment.",

author = "D.W. Bardayan and J.C. Blackmon and C.R. Brune and A.E. Champagne and A.A. Chen and J.M. Cox and T. Davinson and V.Y. Hansper and M.A. Hofstee and B.A. Johnson and R.L. Kozub and Z. Ma and P.D. Parker and D.E. Pierce and M.T. Rabban and A.C. Shotter and M.S. Smith and K.B. Swartz and D.W. Visser and P.J. Woods",

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Bardayan, DW, Blackmon, JC, Brune, CR, Champagne, AE, Chen, AA, Cox, JM, Davinson, T, Hansper, VY, Hofstee, MA, Johnson, BA, Kozub, RL, Ma, Z, Parker, PD, Pierce, DE, Rabban, MT, Shotter, AC, Smith, MS, Swartz, KB, Visser, DW & Woods, PJ 2000, 'The astrophysically important 3 state in Ne and the F(p, γ)Ne stellar rate', Physical Review C, vol. 62, no. 5, pp. 558041-5580414.

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T1 - The astrophysically important 3 state in Ne and the F(p, γ)Ne stellar rate

AU - Bardayan, D.W.

AU - Blackmon, J.C.

AU - Brune, C.R.

AU - Champagne, A.E.

AU - Chen, A.A.

AU - Cox, J.M.

AU - Davinson, T.

AU - Hansper, V.Y.

AU - Hofstee, M.A.

AU - Johnson, B.A.

AU - Kozub, R.L.

AU - Ma, Z.

AU - Parker, P.D.

AU - Pierce, D.E.

AU - Rabban, M.T.

AU - Shotter, A.C.

AU - Smith, M.S.

AU - Swartz, K.B.

AU - Visser, D.W.

AU - Woods, P.J.

PY - 2000/11/1

Y1 - 2000/11/1

N2 - Knowledge of the F(p, γ)Ne reaction rate is important for understanding stellar explosions, but it was uncertain because the properties of an expected but previously unobserved 3 state in Ne were not known. This state would provide a strong s-wave resonance for the F+p system and, depending on its excitation energy, could dominate the stellar reaction rate at temperatures above 0.2 GK. We have observed this missing 3 state by measuring the H(F,p)F excitation function with a radioactive F beam at the ORNL Holifield Radioactive Ion Beam Facility (HRIBF). We find that the state lies at a center-of-mass energy of E = 599.8 ± 1.5±2.0 keV (E = 4523.7±2.9 keV) and has a width of Γ = 18±2±1 keV. The measured properties of the resonance are only consistent with a J = 3 assignment.

AB - Knowledge of the F(p, γ)Ne reaction rate is important for understanding stellar explosions, but it was uncertain because the properties of an expected but previously unobserved 3 state in Ne were not known. This state would provide a strong s-wave resonance for the F+p system and, depending on its excitation energy, could dominate the stellar reaction rate at temperatures above 0.2 GK. We have observed this missing 3 state by measuring the H(F,p)F excitation function with a radioactive F beam at the ORNL Holifield Radioactive Ion Beam Facility (HRIBF). We find that the state lies at a center-of-mass energy of E = 599.8 ± 1.5±2.0 keV (E = 4523.7±2.9 keV) and has a width of Γ = 18±2±1 keV. The measured properties of the resonance are only consistent with a J = 3 assignment.

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The astrophysically important 3 state in Ne and the F(p, γ)Ne stellar rate

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