Evidence for the existence of the astrophysically important 6.40-MeV state of 31S

D. Irvine; A. A. Chen; A. Parikh; K. Setoodehnia; T. Faestermann; R. Hertenberger; H. F. Wirth; V. Bildstein; S. Bishop; J. A. Clark; C. M. Deibel; J. Hendriks; C. Herlitzius; R. Krücken; W. N. Lennard; O. Lepyoshkina; R. Longland; G. Rugel; D. Seiler; K. Straub; C. Wrede

doi:10.1103/PhysRevC.88.055803

Evidence for the existence of the astrophysically important 6.40-MeV state of 31S

D. Irvine
, A. A. Chen
, A. Parikh
, K. Setoodehnia
, T. Faestermann
, R. Hertenberger
, H. F. Wirth
, V. Bildstein
, S. Bishop
, J. A. Clark
, C. M. Deibel
, J. Hendriks
, C. Herlitzius
, R. Krücken
, W. N. Lennard
, O. Lepyoshkina
, R. Longland
, G. Rugel
, D. Seiler
, K. Straub

C. Wrede

Associate Professorship of Experimentalphysik - Nukleare Astrophysik (2008 — 2025)

McMaster University
UPC BarcelonaTech
Technical University of Munich
Ludwig-Maximilians-Universität München
University of Guelph
Argonne National Laboratory
Michigan State University
Louisiana State University
Western University
TRIUMF
University of Washington

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

17 Scopus citations

Abstract

Proton-unbound excited states of 31S have been populated with the 32S(d,t)31S reaction at a beam energy of 24 MeV. Tritons corresponding to 31S states with E_x⁽31S)≈6.3-7.1 MeV were momentum analyzed with a high resolution quadrupole-dipole-dipole-dipole (Q3D) magnetic spectrograph at six angles ranging from θ_lab=15 ^â̂̃ to 58.5^â̂̃. We report a statistically significant detection of an astrophysically important state at E_x⁽31S)=6402 (2) keV, whose existence as a third state in this region has been under debate. Using updated A=31 nuclear structure information, we present a new set of proposed 31S-31P mirror assignments for 31S, in which this state is tentatively assigned a spin of 7/2. This level, corresponding to a 30P + p resonance at 271 keV, is likely to have a significant influence on the 30P(p,γ)31S reaction rate in explosive hydrogen burning in classical novae.

Original language	English
Article number	055803
Journal	Physical Review C - Nuclear Physics
Volume	88
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.88.055803
State	Published - 27 Nov 2013

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Irvine, D., Chen, A. A., Parikh, A., Setoodehnia, K., Faestermann, T., Hertenberger, R., Wirth, H. F., Bildstein, V., Bishop, S., Clark, J. A., Deibel, C. M., Hendriks, J., Herlitzius, C., Krücken, R., Lennard, W. N., Lepyoshkina, O., Longland, R., Rugel, G., Seiler, D., ... Wrede, C. (2013). Evidence for the existence of the astrophysically important 6.40-MeV state of 31S. Physical Review C - Nuclear Physics, 88(5), Article 055803. https://doi.org/10.1103/PhysRevC.88.055803

@article{3f43af98ca97499298509bfcbaad1350,

title = "Evidence for the existence of the astrophysically important 6.40-MeV state of 31S",

abstract = "Proton-unbound excited states of 31S have been populated with the 32S(d,t)31S reaction at a beam energy of 24 MeV. Tritons corresponding to 31S states with Ex(31S)≈6.3-7.1 MeV were momentum analyzed with a high resolution quadrupole-dipole-dipole-dipole (Q3D) magnetic spectrograph at six angles ranging from θlab=15 {\^a}{\~̂} to 58.5{\^a}{\~̂}. We report a statistically significant detection of an astrophysically important state at Ex(31S)=6402 (2) keV, whose existence as a third state in this region has been under debate. Using updated A=31 nuclear structure information, we present a new set of proposed 31S-31P mirror assignments for 31S, in which this state is tentatively assigned a spin of 7/2. This level, corresponding to a 30P + p resonance at 271 keV, is likely to have a significant influence on the 30P(p,γ)31S reaction rate in explosive hydrogen burning in classical novae.",

author = "D. Irvine and Chen, \{A. A.\} and A. Parikh and K. Setoodehnia and T. Faestermann and R. Hertenberger and Wirth, \{H. F.\} and V. Bildstein and S. Bishop and Clark, \{J. A.\} and Deibel, \{C. M.\} and J. Hendriks and C. Herlitzius and R. Kr{\"u}cken and Lennard, \{W. N.\} and O. Lepyoshkina and R. Longland and G. Rugel and D. Seiler and K. Straub and C. Wrede",

year = "2013",

month = nov,

day = "27",

doi = "10.1103/PhysRevC.88.055803",

language = "English",

volume = "88",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "5",

}

Irvine, D, Chen, AA, Parikh, A, Setoodehnia, K, Faestermann, T, Hertenberger, R, Wirth, HF, Bildstein, V, Bishop, S, Clark, JA, Deibel, CM, Hendriks, J, Herlitzius, C, Krücken, R, Lennard, WN, Lepyoshkina, O, Longland, R, Rugel, G, Seiler, D, Straub, K & Wrede, C 2013, 'Evidence for the existence of the astrophysically important 6.40-MeV state of 31S', Physical Review C - Nuclear Physics, vol. 88, no. 5, 055803. https://doi.org/10.1103/PhysRevC.88.055803

TY - JOUR

T1 - Evidence for the existence of the astrophysically important 6.40-MeV state of 31S

AU - Irvine, D.

AU - Chen, A. A.

AU - Parikh, A.

AU - Setoodehnia, K.

AU - Faestermann, T.

AU - Hertenberger, R.

AU - Wirth, H. F.

AU - Bildstein, V.

AU - Bishop, S.

AU - Clark, J. A.

AU - Deibel, C. M.

AU - Hendriks, J.

AU - Herlitzius, C.

AU - Krücken, R.

AU - Lennard, W. N.

AU - Lepyoshkina, O.

AU - Longland, R.

AU - Rugel, G.

AU - Seiler, D.

AU - Straub, K.

AU - Wrede, C.

PY - 2013/11/27

Y1 - 2013/11/27

N2 - Proton-unbound excited states of 31S have been populated with the 32S(d,t)31S reaction at a beam energy of 24 MeV. Tritons corresponding to 31S states with Ex(31S)≈6.3-7.1 MeV were momentum analyzed with a high resolution quadrupole-dipole-dipole-dipole (Q3D) magnetic spectrograph at six angles ranging from θlab=15 â̂̃ to 58.5â̂̃. We report a statistically significant detection of an astrophysically important state at Ex(31S)=6402 (2) keV, whose existence as a third state in this region has been under debate. Using updated A=31 nuclear structure information, we present a new set of proposed 31S-31P mirror assignments for 31S, in which this state is tentatively assigned a spin of 7/2. This level, corresponding to a 30P + p resonance at 271 keV, is likely to have a significant influence on the 30P(p,γ)31S reaction rate in explosive hydrogen burning in classical novae.

AB - Proton-unbound excited states of 31S have been populated with the 32S(d,t)31S reaction at a beam energy of 24 MeV. Tritons corresponding to 31S states with Ex(31S)≈6.3-7.1 MeV were momentum analyzed with a high resolution quadrupole-dipole-dipole-dipole (Q3D) magnetic spectrograph at six angles ranging from θlab=15 â̂̃ to 58.5â̂̃. We report a statistically significant detection of an astrophysically important state at Ex(31S)=6402 (2) keV, whose existence as a third state in this region has been under debate. Using updated A=31 nuclear structure information, we present a new set of proposed 31S-31P mirror assignments for 31S, in which this state is tentatively assigned a spin of 7/2. This level, corresponding to a 30P + p resonance at 271 keV, is likely to have a significant influence on the 30P(p,γ)31S reaction rate in explosive hydrogen burning in classical novae.

UR - https://www.scopus.com/pages/publications/84889797789

U2 - 10.1103/PhysRevC.88.055803

DO - 10.1103/PhysRevC.88.055803

M3 - Article

AN - SCOPUS:84889797789

SN - 0556-2813

VL - 88

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 5

M1 - 055803

ER -

Evidence for the existence of the astrophysically important 6.40-MeV state of 31S

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