New constraints on the18F(p,α)15O rate in novae from the (d, p) reaction

R. L. Kozub; D. W. Bardayan; J. C. Batchelder; J. C. Blackmon; C. R. Brune; A. E. Champagne; J. A. Cizewski; T. Davinson; U. Greife; C. J. Gross; C. C. Jewett; R. J. Livesay; Z. Ma; B. H. Moazen; C. D. Nesaraja; L. Sahin; J. P. Scott; D. Shapira; M. S. Smith; J. S. Thomas; P. J. Woods

doi:10.1103/PhysRevC.71.032801

New constraints on the¹⁸F(p,α)¹⁵O rate in novae from the (d, p) reaction

R. L. Kozub
, D. W. Bardayan
, J. C. Batchelder
, J. C. Blackmon
, C. R. Brune
, A. E. Champagne
, J. A. Cizewski
, T. Davinson
, U. Greife
, C. J. Gross
, C. C. Jewett
, R. J. Livesay
, Z. Ma
, B. H. Moazen
, C. D. Nesaraja
, L. Sahin
, J. P. Scott
, D. Shapira
, M. S. Smith
, J. S. Thomas

P. J. Woods

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

55 Scopus citations

Abstract

The degree to which the (p,γ) and (p,α) reactions destroy ¹⁸F at temperatures (1-4) × 10⁸ K is important for understanding the synthesis of nuclei in nova explosions and for using the long-lived radionuclide ¹⁸F, a target of γ-ray astronomy, as a diagnostic of nova mechanisms. The reactions are dominated by low-lying proton resonances near the ^I8F+p threshold (E_x = 6.411 MeV in ¹⁹Ne). To gain further information about these resonances, we used a radioactive ¹⁸F beam from the Holifield Radioactive Ion Beam Facility to selectively populate corresponding mirror states in ¹⁹F via the inverse ²H(¹⁸F,p)¹⁹F neutron transfer reaction. Neutron spectroscopic factors were measured for states in ¹⁹F in the excitation energy range 0-9 MeV. Widths for corresponding proton resonances in ¹⁹Ne were calculated using a Woods-Saxon potential. The results imply significantly lower ^I8F(p,γ)¹⁹Ne and ^I8F(p,α)¹⁵O reaction rates than reported previously, thereby increasing the prospect of observing the 511 keV annihilation radiation associated with the decay of ¹⁸F in the ashes ejected from novae.

Original language	English
Article number	032801
Journal	Physical Review C - Nuclear Physics
Volume	71
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.71.032801
State	Published - Mar 2005

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Kozub, R. L., Bardayan, D. W., Batchelder, J. C., Blackmon, J. C., Brune, C. R., Champagne, A. E., Cizewski, J. A., Davinson, T., Greife, U., Gross, C. J., Jewett, C. C., Livesay, R. J., Ma, Z., Moazen, B. H., Nesaraja, C. D., Sahin, L., Scott, J. P., Shapira, D., Smith, M. S., ... Woods, P. J. (2005). New constraints on the¹⁸F(p,α)¹⁵O rate in novae from the (d, p) reaction. Physical Review C - Nuclear Physics, 71(3), Article 032801. https://doi.org/10.1103/PhysRevC.71.032801

@article{e9a34d4aa1ef4a7d96aff8955c566a49,

title = "New constraints on the18F(p,α)15O rate in novae from the (d, p) reaction",

abstract = "The degree to which the (p,γ) and (p,α) reactions destroy 18F at temperatures (1-4) × 108 K is important for understanding the synthesis of nuclei in nova explosions and for using the long-lived radionuclide 18F, a target of γ-ray astronomy, as a diagnostic of nova mechanisms. The reactions are dominated by low-lying proton resonances near the I8F+p threshold (Ex = 6.411 MeV in 19Ne). To gain further information about these resonances, we used a radioactive 18F beam from the Holifield Radioactive Ion Beam Facility to selectively populate corresponding mirror states in 19F via the inverse 2H(18F,p)19F neutron transfer reaction. Neutron spectroscopic factors were measured for states in 19F in the excitation energy range 0-9 MeV. Widths for corresponding proton resonances in 19Ne were calculated using a Woods-Saxon potential. The results imply significantly lower I8F(p,γ)19Ne and I8F(p,α)15O reaction rates than reported previously, thereby increasing the prospect of observing the 511 keV annihilation radiation associated with the decay of 18F in the ashes ejected from novae.",

author = "Kozub, \{R. L.\} and Bardayan, \{D. W.\} and Batchelder, \{J. C.\} and Blackmon, \{J. C.\} and Brune, \{C. R.\} and Champagne, \{A. E.\} and Cizewski, \{J. A.\} and T. Davinson and U. Greife and Gross, \{C. J.\} and Jewett, \{C. C.\} and Livesay, \{R. J.\} and Z. Ma and Moazen, \{B. H.\} and Nesaraja, \{C. D.\} and L. Sahin and Scott, \{J. P.\} and D. Shapira and Smith, \{M. S.\} and Thomas, \{J. S.\} and Woods, \{P. J.\}",

year = "2005",

month = mar,

doi = "10.1103/PhysRevC.71.032801",

language = "English",

volume = "71",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

number = "3",

}

Kozub, RL, Bardayan, DW, Batchelder, JC, Blackmon, JC, Brune, CR, Champagne, AE, Cizewski, JA, Davinson, T, Greife, U, Gross, CJ, Jewett, CC, Livesay, RJ, Ma, Z, Moazen, BH, Nesaraja, CD, Sahin, L, Scott, JP, Shapira, D, Smith, MS, Thomas, JS & Woods, PJ 2005, 'New constraints on the¹⁸F(p,α)¹⁵O rate in novae from the (d, p) reaction', Physical Review C - Nuclear Physics, vol. 71, no. 3, 032801. https://doi.org/10.1103/PhysRevC.71.032801

TY - JOUR

T1 - New constraints on the18F(p,α)15O rate in novae from the (d, p) reaction

AU - Kozub, R. L.

AU - Bardayan, D. W.

AU - Batchelder, J. C.

AU - Blackmon, J. C.

AU - Brune, C. R.

AU - Champagne, A. E.

AU - Cizewski, J. A.

AU - Davinson, T.

AU - Greife, U.

AU - Gross, C. J.

AU - Jewett, C. C.

AU - Livesay, R. J.

AU - Ma, Z.

AU - Moazen, B. H.

AU - Nesaraja, C. D.

AU - Sahin, L.

AU - Scott, J. P.

AU - Shapira, D.

AU - Smith, M. S.

AU - Thomas, J. S.

AU - Woods, P. J.

PY - 2005/3

Y1 - 2005/3

N2 - The degree to which the (p,γ) and (p,α) reactions destroy 18F at temperatures (1-4) × 108 K is important for understanding the synthesis of nuclei in nova explosions and for using the long-lived radionuclide 18F, a target of γ-ray astronomy, as a diagnostic of nova mechanisms. The reactions are dominated by low-lying proton resonances near the I8F+p threshold (Ex = 6.411 MeV in 19Ne). To gain further information about these resonances, we used a radioactive 18F beam from the Holifield Radioactive Ion Beam Facility to selectively populate corresponding mirror states in 19F via the inverse 2H(18F,p)19F neutron transfer reaction. Neutron spectroscopic factors were measured for states in 19F in the excitation energy range 0-9 MeV. Widths for corresponding proton resonances in 19Ne were calculated using a Woods-Saxon potential. The results imply significantly lower I8F(p,γ)19Ne and I8F(p,α)15O reaction rates than reported previously, thereby increasing the prospect of observing the 511 keV annihilation radiation associated with the decay of 18F in the ashes ejected from novae.

AB - The degree to which the (p,γ) and (p,α) reactions destroy 18F at temperatures (1-4) × 108 K is important for understanding the synthesis of nuclei in nova explosions and for using the long-lived radionuclide 18F, a target of γ-ray astronomy, as a diagnostic of nova mechanisms. The reactions are dominated by low-lying proton resonances near the I8F+p threshold (Ex = 6.411 MeV in 19Ne). To gain further information about these resonances, we used a radioactive 18F beam from the Holifield Radioactive Ion Beam Facility to selectively populate corresponding mirror states in 19F via the inverse 2H(18F,p)19F neutron transfer reaction. Neutron spectroscopic factors were measured for states in 19F in the excitation energy range 0-9 MeV. Widths for corresponding proton resonances in 19Ne were calculated using a Woods-Saxon potential. The results imply significantly lower I8F(p,γ)19Ne and I8F(p,α)15O reaction rates than reported previously, thereby increasing the prospect of observing the 511 keV annihilation radiation associated with the decay of 18F in the ashes ejected from novae.

UR - https://www.scopus.com/pages/publications/18244405575

U2 - 10.1103/PhysRevC.71.032801

DO - 10.1103/PhysRevC.71.032801

M3 - Article

AN - SCOPUS:18244405575

SN - 0556-2813

VL - 71

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 3

M1 - 032801

ER -

New constraints on the¹⁸F(p,α)¹⁵O rate in novae from the (d, p) reaction

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