Measurement of Radiative Proton Capture on F-18 and Implications for Oxygen-Neon Novae

C. Akers; A. M. Laird; B. R. Fulton; C. Ruiz; D. W. Bardayan; L. Buchmann; G. Christian; B. Davids; L. Erikson; J. Fallis; U. Hager; D. Hutcheon; L. Martin; A. St. J. Murphy; K. Nelson; A. Spyrou; C. Stanford; D. Ottewell; A. Rojas; Alex Murphy

doi:10.1103/PhysRevLett.110.262502

Measurement of Radiative Proton Capture on F-18 and Implications for Oxygen-Neon Novae

C. Akers^*, A. M. Laird, B. R. Fulton, C. Ruiz, D. W. Bardayan, L. Buchmann, G. Christian, B. Davids, L. Erikson, J. Fallis, U. Hager, D. Hutcheon, L. Martin, A. St. J. Murphy, K. Nelson, A. Spyrou, C. Stanford, D. Ottewell, A. Rojas, Alex Murphy

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract / Description of output

The rate of the F-18(p, gamma)Ne-19 reaction affects the final abundance of the gamma-ray observable radioisotope F-18, produced in novae. However, no successful measurement of this reaction exists and the rate used is calculated from incomplete information on the contributing resonances. Of the two resonances thought to play a significant role, one has a radiative width estimated from the assumed analogue state in the mirror nucleus, F-19. The second does not have an analogue state assignment at all, resulting in an arbitrary radiative width being assumed. Here, we report the first successful direct measurement of the F-18(p, gamma)Ne-19 reaction. The strength of the 665 keV resonance (E-x = 7.076 MeV) is found to be over an order of magnitude weaker than currently assumed in nova models. Reaction rate calculations show that this resonance therefore plays no significant role in the destruction of F-18 at any astrophysical energy.

Original language	English
Article number	262502
Number of pages	5
Journal	Physical Review Letters
Volume	110
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.110.262502
Publication status	Published - 28 Jun 2013

Keywords / Materials (for Non-textual outputs)

REACTION-RATES
CLASSICAL NOVAE
ISAC

Access to Document

10.1103/PhysRevLett.110.262502

Nuclear Physics Rolling Grant
Woods, P., Aliotta, M. & Murphy, A.
STFC
1/08/08 → 31/07/13
Project: Research

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Akers, C., Laird, A. M., Fulton, B. R., Ruiz, C., Bardayan, D. W., Buchmann, L., Christian, G., Davids, B., Erikson, L., Fallis, J., Hager, U., Hutcheon, D., Martin, L., Murphy, A. S. J., Nelson, K., Spyrou, A., Stanford, C., Ottewell, D., Rojas, A., & Murphy, A. (2013). Measurement of Radiative Proton Capture on F-18 and Implications for Oxygen-Neon Novae. Physical Review Letters, 110(26), Article 262502. https://doi.org/10.1103/PhysRevLett.110.262502

@article{a0be3b8b62c54937a5a19c5475eba2ae,

title = "Measurement of Radiative Proton Capture on F-18 and Implications for Oxygen-Neon Novae",

abstract = "The rate of the F-18(p, gamma)Ne-19 reaction affects the final abundance of the gamma-ray observable radioisotope F-18, produced in novae. However, no successful measurement of this reaction exists and the rate used is calculated from incomplete information on the contributing resonances. Of the two resonances thought to play a significant role, one has a radiative width estimated from the assumed analogue state in the mirror nucleus, F-19. The second does not have an analogue state assignment at all, resulting in an arbitrary radiative width being assumed. Here, we report the first successful direct measurement of the F-18(p, gamma)Ne-19 reaction. The strength of the 665 keV resonance (E-x = 7.076 MeV) is found to be over an order of magnitude weaker than currently assumed in nova models. Reaction rate calculations show that this resonance therefore plays no significant role in the destruction of F-18 at any astrophysical energy.",

keywords = "REACTION-RATES, CLASSICAL NOVAE, ISAC",

author = "C. Akers and Laird, {A. M.} and Fulton, {B. R.} and C. Ruiz and Bardayan, {D. W.} and L. Buchmann and G. Christian and B. Davids and L. Erikson and J. Fallis and U. Hager and D. Hutcheon and L. Martin and Murphy, {A. St. J.} and K. Nelson and A. Spyrou and C. Stanford and D. Ottewell and A. Rojas and Alex Murphy",

year = "2013",

month = jun,

day = "28",

doi = "10.1103/PhysRevLett.110.262502",

language = "English",

volume = "110",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "26",

}

Akers, C, Laird, AM, Fulton, BR, Ruiz, C, Bardayan, DW, Buchmann, L, Christian, G, Davids, B, Erikson, L, Fallis, J, Hager, U, Hutcheon, D, Martin, L, Murphy, ASJ, Nelson, K, Spyrou, A, Stanford, C, Ottewell, D, Rojas, A & Murphy, A 2013, 'Measurement of Radiative Proton Capture on F-18 and Implications for Oxygen-Neon Novae', Physical Review Letters, vol. 110, no. 26, 262502. https://doi.org/10.1103/PhysRevLett.110.262502

TY - JOUR

T1 - Measurement of Radiative Proton Capture on F-18 and Implications for Oxygen-Neon Novae

AU - Akers, C.

AU - Laird, A. M.

AU - Fulton, B. R.

AU - Ruiz, C.

AU - Bardayan, D. W.

AU - Buchmann, L.

AU - Christian, G.

AU - Davids, B.

AU - Erikson, L.

AU - Fallis, J.

AU - Hager, U.

AU - Hutcheon, D.

AU - Martin, L.

AU - Murphy, A. St. J.

AU - Nelson, K.

AU - Spyrou, A.

AU - Stanford, C.

AU - Ottewell, D.

AU - Rojas, A.

AU - Murphy, Alex

PY - 2013/6/28

Y1 - 2013/6/28

N2 - The rate of the F-18(p, gamma)Ne-19 reaction affects the final abundance of the gamma-ray observable radioisotope F-18, produced in novae. However, no successful measurement of this reaction exists and the rate used is calculated from incomplete information on the contributing resonances. Of the two resonances thought to play a significant role, one has a radiative width estimated from the assumed analogue state in the mirror nucleus, F-19. The second does not have an analogue state assignment at all, resulting in an arbitrary radiative width being assumed. Here, we report the first successful direct measurement of the F-18(p, gamma)Ne-19 reaction. The strength of the 665 keV resonance (E-x = 7.076 MeV) is found to be over an order of magnitude weaker than currently assumed in nova models. Reaction rate calculations show that this resonance therefore plays no significant role in the destruction of F-18 at any astrophysical energy.

AB - The rate of the F-18(p, gamma)Ne-19 reaction affects the final abundance of the gamma-ray observable radioisotope F-18, produced in novae. However, no successful measurement of this reaction exists and the rate used is calculated from incomplete information on the contributing resonances. Of the two resonances thought to play a significant role, one has a radiative width estimated from the assumed analogue state in the mirror nucleus, F-19. The second does not have an analogue state assignment at all, resulting in an arbitrary radiative width being assumed. Here, we report the first successful direct measurement of the F-18(p, gamma)Ne-19 reaction. The strength of the 665 keV resonance (E-x = 7.076 MeV) is found to be over an order of magnitude weaker than currently assumed in nova models. Reaction rate calculations show that this resonance therefore plays no significant role in the destruction of F-18 at any astrophysical energy.

KW - REACTION-RATES

KW - CLASSICAL NOVAE

KW - ISAC

U2 - 10.1103/PhysRevLett.110.262502

DO - 10.1103/PhysRevLett.110.262502

M3 - Article

SN - 0031-9007

VL - 110

JO - Physical Review Letters

JF - Physical Review Letters

IS - 26

M1 - 262502

ER -

Measurement of Radiative Proton Capture on F-18 and Implications for Oxygen-Neon Novae

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Keywords / Materials (for Non-textual outputs)

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Nuclear Physics Rolling Grant

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