Break-out from the hot-CNO cycle studied with radioactive beams

A.N. Ostrowski; A.M. Laird; A.C. Shotter; M. Aliotta; F. Cappuzzello; S. Cherubini; A. Cunsolo; T. Davinson; W. Galster; J.S. Graulich; D. Groombridge; J. Hinnefeld; P. Leleux; L. Michel; S. Morrow; A. Musumarra; A. Ninane; A. Spitaleri; A. Tumino; J. Vervier

doi:10.1016/S0375-9474(01)01655-4

Break-out from the hot-CNO cycle studied with radioactive beams

A.N. Ostrowski, A.M. Laird, A.C. Shotter, M. Aliotta, F. Cappuzzello, S. Cherubini, A. Cunsolo, T. Davinson, W. Galster, J.S. Graulich, D. Groombridge, J. Hinnefeld, P. Leleux, L. Michel, S. Morrow, A. Musumarra, A. Ninane, A. Spitaleri, A. Tumino, J. Vervier

School of Physics and Astronomy

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

Abstract

The ¹⁵O(α,γ)¹⁹Ne reaction is generally considered as the potential breakout reaction from the hot-CNO cycle. Under nova conditions, the reaction depends dominantly on a single sub-Coulomb resonance atE_c.m.=504 keV which corresponds to a ¹⁹Ne excitation energy of E_R=4.033 MeV. It is possible to model the¹⁵O(α,γ)¹⁹Ne reaction rate, if the branching ratio Γ_α/Γ and the total resonance width Γ of this state are known. Results from an exploratory ¹⁸Ne(d,p) experiment performed in inverse kinematics at E_lab=44.1 MeV and 10⁶ pps beam intensity show that the 4.033 MeV state—among other resonances of astrophysical interest—is populated in this reaction ( at θ_lab=138°). The determination of Γ_α/Γ=0.28±0.13 for another ¹⁹Ne resonance at E_R=4.600 MeV found to be in good agreement with a stable beam based result shows the feasibility of this radioactive nuclear beam based approach provided that higher ¹⁸Ne beam intensities become available.

Original language	English
Pages (from-to)	621-624
Number of pages	4
Journal	Nuclear Physics A
Volume	701
Issue number	1-4
DOIs	https://doi.org/10.1016/S0375-9474(01)01655-4
Publication status	Published - 22 Apr 2002

Keywords / Materials (for Non-textual outputs)

exotic nucleus scattering
branching ratios
LOW-ENERGY RESONANCES
O-15(ALPHA,GAMMA)NE-19
N-15(ALPHA,GAMMA)F-19

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10.1016/S0375-9474(01)01655-4

http://www.sciencedirect.com/science/article/pii/S0375947401016554

Cite this

Ostrowski, A. N., Laird, A. M., Shotter, A. C., Aliotta, M., Cappuzzello, F., Cherubini, S., Cunsolo, A., Davinson, T., Galster, W., Graulich, J. S., Groombridge, D., Hinnefeld, J., Leleux, P., Michel, L., Morrow, S., Musumarra, A., Ninane, A., Spitaleri, A., Tumino, A., & Vervier, J. (2002). Break-out from the hot-CNO cycle studied with radioactive beams. Nuclear Physics A, 701(1-4), 621-624. https://doi.org/10.1016/S0375-9474(01)01655-4

@article{61c6bcf1510746ddb5fbf4be702e7d50,

title = "Break-out from the hot-CNO cycle studied with radioactive beams",

abstract = "The 15O(α,γ)19Ne reaction is generally considered as the potential breakout reaction from the hot-CNO cycle. Under nova conditions, the reaction depends dominantly on a single sub-Coulomb resonance atEc.m.=504 keV which corresponds to a 19Ne excitation energy of ER=4.033 MeV. It is possible to model the15O(α,γ)19Ne reaction rate, if the branching ratio Γα/Γ and the total resonance width Γ of this state are known. Results from an exploratory 18Ne(d,p) experiment performed in inverse kinematics at Elab=44.1 MeV and 106 pps beam intensity show that the 4.033 MeV state—among other resonances of astrophysical interest—is populated in this reaction ( at θlab=138°). The determination of Γα/Γ=0.28±0.13 for another 19Ne resonance at ER=4.600 MeV found to be in good agreement with a stable beam based result shows the feasibility of this radioactive nuclear beam based approach provided that higher 18Ne beam intensities become available.",

keywords = "exotic nucleus scattering, branching ratios, LOW-ENERGY RESONANCES, O-15(ALPHA,GAMMA)NE-19, N-15(ALPHA,GAMMA)F-19",

author = "A.N. Ostrowski and A.M. Laird and A.C. Shotter and M. Aliotta and F. Cappuzzello and S. Cherubini and A. Cunsolo and T. Davinson and W. Galster and J.S. Graulich and D. Groombridge and J. Hinnefeld and P. Leleux and L. Michel and S. Morrow and A. Musumarra and A. Ninane and A. Spitaleri and A. Tumino and J. Vervier",

year = "2002",

month = apr,

day = "22",

doi = "10.1016/S0375-9474(01)01655-4",

language = "English",

volume = "701",

pages = "621--624",

journal = "Nuclear Physics A",

issn = "0375-9474",

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Ostrowski, AN, Laird, AM, Shotter, AC, Aliotta, M, Cappuzzello, F, Cherubini, S, Cunsolo, A, Davinson, T, Galster, W, Graulich, JS, Groombridge, D, Hinnefeld, J, Leleux, P, Michel, L, Morrow, S, Musumarra, A, Ninane, A, Spitaleri, A, Tumino, A & Vervier, J 2002, 'Break-out from the hot-CNO cycle studied with radioactive beams', Nuclear Physics A, vol. 701, no. 1-4, pp. 621-624. https://doi.org/10.1016/S0375-9474(01)01655-4

TY - JOUR

T1 - Break-out from the hot-CNO cycle studied with radioactive beams

AU - Ostrowski, A.N.

AU - Laird, A.M.

AU - Shotter, A.C.

AU - Aliotta, M.

AU - Cappuzzello, F.

AU - Cherubini, S.

AU - Cunsolo, A.

AU - Davinson, T.

AU - Galster, W.

AU - Graulich, J.S.

AU - Groombridge, D.

AU - Hinnefeld, J.

AU - Leleux, P.

AU - Michel, L.

AU - Morrow, S.

AU - Musumarra, A.

AU - Ninane, A.

AU - Spitaleri, A.

AU - Tumino, A.

AU - Vervier, J.

PY - 2002/4/22

Y1 - 2002/4/22

N2 - The 15O(α,γ)19Ne reaction is generally considered as the potential breakout reaction from the hot-CNO cycle. Under nova conditions, the reaction depends dominantly on a single sub-Coulomb resonance atEc.m.=504 keV which corresponds to a 19Ne excitation energy of ER=4.033 MeV. It is possible to model the15O(α,γ)19Ne reaction rate, if the branching ratio Γα/Γ and the total resonance width Γ of this state are known. Results from an exploratory 18Ne(d,p) experiment performed in inverse kinematics at Elab=44.1 MeV and 106 pps beam intensity show that the 4.033 MeV state—among other resonances of astrophysical interest—is populated in this reaction ( at θlab=138°). The determination of Γα/Γ=0.28±0.13 for another 19Ne resonance at ER=4.600 MeV found to be in good agreement with a stable beam based result shows the feasibility of this radioactive nuclear beam based approach provided that higher 18Ne beam intensities become available.

AB - The 15O(α,γ)19Ne reaction is generally considered as the potential breakout reaction from the hot-CNO cycle. Under nova conditions, the reaction depends dominantly on a single sub-Coulomb resonance atEc.m.=504 keV which corresponds to a 19Ne excitation energy of ER=4.033 MeV. It is possible to model the15O(α,γ)19Ne reaction rate, if the branching ratio Γα/Γ and the total resonance width Γ of this state are known. Results from an exploratory 18Ne(d,p) experiment performed in inverse kinematics at Elab=44.1 MeV and 106 pps beam intensity show that the 4.033 MeV state—among other resonances of astrophysical interest—is populated in this reaction ( at θlab=138°). The determination of Γα/Γ=0.28±0.13 for another 19Ne resonance at ER=4.600 MeV found to be in good agreement with a stable beam based result shows the feasibility of this radioactive nuclear beam based approach provided that higher 18Ne beam intensities become available.

KW - exotic nucleus scattering

KW - branching ratios

KW - LOW-ENERGY RESONANCES

KW - O-15(ALPHA,GAMMA)NE-19

KW - N-15(ALPHA,GAMMA)F-19

UR - https://www.scopus.com/pages/publications/17444448451

U2 - 10.1016/S0375-9474(01)01655-4

DO - 10.1016/S0375-9474(01)01655-4

M3 - Article

SN - 0375-9474

VL - 701

SP - 621

EP - 624

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1-4

ER -

Break-out from the hot-CNO cycle studied with radioactive beams

Abstract

Keywords / Materials (for Non-textual outputs)

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