Novel technique for constraining r -process (n, γ) reaction rates

A. Spyrou; S. N. Liddick; A. C. Larsen; M. Guttormsen; K. Cooper; A. C. Dombos; D. J. Morrissey; F. Naqvi; G. Perdikakis; S. J. Quinn; T. Renstrøm; J. A. Rodriguez; A. Simon; C. S. Sumithrarachchi; R. G.T. Zegers

doi:10.1103/PhysRevLett.113.232502

Novel technique for constraining r -process (n, γ) reaction rates

A. Spyrou, S. N. Liddick, A. C. Larsen, M. Guttormsen, K. Cooper, A. C. Dombos, D. J. Morrissey, F. Naqvi, G. Perdikakis, S. J. Quinn, T. Renstrøm, J. A. Rodriguez, A. Simon, C. S. Sumithrarachchi, R. G.T. Zegers

Physics

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96 Scopus citations

Abstract

A novel technique has been developed, which will open exciting new opportunities for studying the very neutron-rich nuclei involved in the r process. As a proof of principle, the γ spectra from the β decay of Ga76 have been measured with the SuN detector at the National Superconducting Cyclotron Laboratory. The nuclear level density and γ-ray strength function are extracted and used as input to Hauser-Feshbach calculations. The present technique is shown to strongly constrain the Ge75(n,γ)Ge76 cross section and reaction rate.

Original language	English
Article number	232502
Journal	Physical Review Letters
Volume	113
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.113.232502
State	Published - Dec 2 2014

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Spyrou, A., Liddick, S. N., Larsen, A. C., Guttormsen, M., Cooper, K., Dombos, A. C., Morrissey, D. J., Naqvi, F., Perdikakis, G., Quinn, S. J., Renstrøm, T., Rodriguez, J. A., Simon, A., Sumithrarachchi, C. S., & Zegers, R. G. T. (2014). Novel technique for constraining r -process (n, γ) reaction rates. Physical Review Letters, 113(23), [232502]. https://doi.org/10.1103/PhysRevLett.113.232502

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title = "Novel technique for constraining r -process (n, γ) reaction rates",

abstract = "A novel technique has been developed, which will open exciting new opportunities for studying the very neutron-rich nuclei involved in the r process. As a proof of principle, the γ spectra from the β decay of Ga76 have been measured with the SuN detector at the National Superconducting Cyclotron Laboratory. The nuclear level density and γ-ray strength function are extracted and used as input to Hauser-Feshbach calculations. The present technique is shown to strongly constrain the Ge75(n,γ)Ge76 cross section and reaction rate.",

author = "A. Spyrou and Liddick, {S. N.} and Larsen, {A. C.} and M. Guttormsen and K. Cooper and Dombos, {A. C.} and Morrissey, {D. J.} and F. Naqvi and G. Perdikakis and Quinn, {S. J.} and T. Renstr{\o}m and Rodriguez, {J. A.} and A. Simon and Sumithrarachchi, {C. S.} and Zegers, {R. G.T.}",

note = "Publisher Copyright: {\textcopyright} 2014 American Physical Society.",

year = "2014",

month = dec,

day = "2",

doi = "10.1103/PhysRevLett.113.232502",

language = "English",

volume = "113",

journal = "Physical Review Letters",

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Spyrou, A, Liddick, SN, Larsen, AC, Guttormsen, M, Cooper, K, Dombos, AC, Morrissey, DJ, Naqvi, F, Perdikakis, G, Quinn, SJ, Renstrøm, T, Rodriguez, JA, Simon, A, Sumithrarachchi, CS & Zegers, RGT 2014, 'Novel technique for constraining r -process (n, γ) reaction rates', Physical Review Letters, vol. 113, no. 23, 232502. https://doi.org/10.1103/PhysRevLett.113.232502

TY - JOUR

T1 - Novel technique for constraining r -process (n, γ) reaction rates

AU - Spyrou, A.

AU - Liddick, S. N.

AU - Larsen, A. C.

AU - Guttormsen, M.

AU - Cooper, K.

AU - Dombos, A. C.

AU - Morrissey, D. J.

AU - Naqvi, F.

AU - Perdikakis, G.

AU - Quinn, S. J.

AU - Renstrøm, T.

AU - Rodriguez, J. A.

AU - Simon, A.

AU - Sumithrarachchi, C. S.

AU - Zegers, R. G.T.

PY - 2014/12/2

Y1 - 2014/12/2

N2 - A novel technique has been developed, which will open exciting new opportunities for studying the very neutron-rich nuclei involved in the r process. As a proof of principle, the γ spectra from the β decay of Ga76 have been measured with the SuN detector at the National Superconducting Cyclotron Laboratory. The nuclear level density and γ-ray strength function are extracted and used as input to Hauser-Feshbach calculations. The present technique is shown to strongly constrain the Ge75(n,γ)Ge76 cross section and reaction rate.

AB - A novel technique has been developed, which will open exciting new opportunities for studying the very neutron-rich nuclei involved in the r process. As a proof of principle, the γ spectra from the β decay of Ga76 have been measured with the SuN detector at the National Superconducting Cyclotron Laboratory. The nuclear level density and γ-ray strength function are extracted and used as input to Hauser-Feshbach calculations. The present technique is shown to strongly constrain the Ge75(n,γ)Ge76 cross section and reaction rate.

UR - http://www.scopus.com/inward/record.url?scp=84918547923&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.113.232502

DO - 10.1103/PhysRevLett.113.232502

M3 - Article

AN - SCOPUS:84918547923

SN - 0031-9007

VL - 113

JO - Physical Review Letters

JF - Physical Review Letters

IS - 23

M1 - 232502

ER -

Novel technique for constraining r -process (n, γ) reaction rates

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