Measurement of the Ca40(Î±,Î)Ti44 reaction relevant for supernova nucleosynthesis

C. Vockenhuber; C. O. Ouellet; L. S. The; L. Buchmann; J. Caggiano; A. A. Chen; H. Crawford; J. M. D'Auria; B. Davids; L. Fogarty; D. Frekers; A. Hussein; D. A. Hutcheon; W. Kutschera; A. M. Laird; R. Lewis; E. O'Connor; D. Ottewell; M. Paul; M. M. Pavan; J. Pearson; C. Ruiz; G. Ruprecht; M. Trinczek; B. Wales; A. Wallner

doi:10.1103/PhysRevC.76.035801

Measurement of the Ca40(Î±,Î)Ti44 reaction relevant for supernova nucleosynthesis

C. Vockenhuber^*, C. O. Ouellet, L. S. The, L. Buchmann, J. Caggiano, A. A. Chen, H. Crawford, J. M. D'Auria, B. Davids, L. Fogarty, D. Frekers, A. Hussein, D. A. Hutcheon, W. Kutschera, A. M. Laird, R. Lewis, E. O'Connor, D. Ottewell, M. Paul, M. M. PavanJ. Pearson, C. Ruiz, G. Ruprecht, M. Trinczek, B. Wales, A. Wallner

^*Corresponding author for this work

Racah Institute of Physics

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

33 Scopus citations

Abstract

The short-lived nuclide Ti44 is an important nuclide for the understanding of explosive nucleosynthesis. The main production reaction, Ca40(Î± ,Î)Ti44, has been studied in inverse kinematics with the recoil mass spectrometer DRAGON located at the TRIUMF-ISAC facility in Vancouver, Canada. The temperature range relevant for Î±-rich freeze-out during a core-collapse supernova has been covered entirely with a Ca40 beam of 0.60 to 1.15 MeV/nucleon. All relevant quantities for the calculation of the astrophysical reaction rate have been measured directly. Because of many previously undiscovered resonances, the reaction rate derived from the energy dependent Ti44 yield is higher than the one based on previous prompt Î-ray studies commonly used in supernova models. The presented new rate results in an increased Ti44 production in supernovae.

Original language	English
Article number	035801
Journal	Physical Review C - Nuclear Physics
Volume	76
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.76.035801
State	Published - 14 Sep 2007

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10.1103/PhysRevC.76.035801

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Vockenhuber, C., Ouellet, C. O., The, L. S., Buchmann, L., Caggiano, J., Chen, A. A., Crawford, H., D'Auria, J. M., Davids, B., Fogarty, L., Frekers, D., Hussein, A., Hutcheon, D. A., Kutschera, W., Laird, A. M., Lewis, R., O'Connor, E., Ottewell, D., Paul, M., ... Wallner, A. (2007). Measurement of the Ca40(Î±,Î)Ti44 reaction relevant for supernova nucleosynthesis. Physical Review C - Nuclear Physics, 76(3), Article 035801. https://doi.org/10.1103/PhysRevC.76.035801

@article{80a7e2351cfb4f8c8408e82309b9cd0d,

title = "Measurement of the Ca40({\^I}±,{\^I})Ti44 reaction relevant for supernova nucleosynthesis",

abstract = "The short-lived nuclide Ti44 is an important nuclide for the understanding of explosive nucleosynthesis. The main production reaction, Ca40({\^I}± ,{\^I})Ti44, has been studied in inverse kinematics with the recoil mass spectrometer DRAGON located at the TRIUMF-ISAC facility in Vancouver, Canada. The temperature range relevant for {\^I}±-rich freeze-out during a core-collapse supernova has been covered entirely with a Ca40 beam of 0.60 to 1.15 MeV/nucleon. All relevant quantities for the calculation of the astrophysical reaction rate have been measured directly. Because of many previously undiscovered resonances, the reaction rate derived from the energy dependent Ti44 yield is higher than the one based on previous prompt {\^I}-ray studies commonly used in supernova models. The presented new rate results in an increased Ti44 production in supernovae.",

author = "C. Vockenhuber and Ouellet, {C. O.} and The, {L. S.} and L. Buchmann and J. Caggiano and Chen, {A. A.} and H. Crawford and D'Auria, {J. M.} and B. Davids and L. Fogarty and D. Frekers and A. Hussein and Hutcheon, {D. A.} and W. Kutschera and Laird, {A. M.} and R. Lewis and E. O'Connor and D. Ottewell and M. Paul and Pavan, {M. M.} and J. Pearson and C. Ruiz and G. Ruprecht and M. Trinczek and B. Wales and A. Wallner",

year = "2007",

month = sep,

day = "14",

doi = "10.1103/PhysRevC.76.035801",

language = "אנגלית",

volume = "76",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

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Vockenhuber, C, Ouellet, CO, The, LS, Buchmann, L, Caggiano, J, Chen, AA, Crawford, H, D'Auria, JM, Davids, B, Fogarty, L, Frekers, D, Hussein, A, Hutcheon, DA, Kutschera, W, Laird, AM, Lewis, R, O'Connor, E, Ottewell, D, Paul, M, Pavan, MM, Pearson, J, Ruiz, C, Ruprecht, G, Trinczek, M, Wales, B & Wallner, A 2007, 'Measurement of the Ca40(Î±,Î)Ti44 reaction relevant for supernova nucleosynthesis', Physical Review C - Nuclear Physics, vol. 76, no. 3, 035801. https://doi.org/10.1103/PhysRevC.76.035801

TY - JOUR

T1 - Measurement of the Ca40(Î±,Î)Ti44 reaction relevant for supernova nucleosynthesis

AU - Vockenhuber, C.

AU - Ouellet, C. O.

AU - The, L. S.

AU - Buchmann, L.

AU - Caggiano, J.

AU - Chen, A. A.

AU - Crawford, H.

AU - D'Auria, J. M.

AU - Davids, B.

AU - Fogarty, L.

AU - Frekers, D.

AU - Hussein, A.

AU - Hutcheon, D. A.

AU - Kutschera, W.

AU - Laird, A. M.

AU - Lewis, R.

AU - O'Connor, E.

AU - Ottewell, D.

AU - Paul, M.

AU - Pavan, M. M.

AU - Pearson, J.

AU - Ruiz, C.

AU - Ruprecht, G.

AU - Trinczek, M.

AU - Wales, B.

AU - Wallner, A.

PY - 2007/9/14

Y1 - 2007/9/14

N2 - The short-lived nuclide Ti44 is an important nuclide for the understanding of explosive nucleosynthesis. The main production reaction, Ca40(Î± ,Î)Ti44, has been studied in inverse kinematics with the recoil mass spectrometer DRAGON located at the TRIUMF-ISAC facility in Vancouver, Canada. The temperature range relevant for Î±-rich freeze-out during a core-collapse supernova has been covered entirely with a Ca40 beam of 0.60 to 1.15 MeV/nucleon. All relevant quantities for the calculation of the astrophysical reaction rate have been measured directly. Because of many previously undiscovered resonances, the reaction rate derived from the energy dependent Ti44 yield is higher than the one based on previous prompt Î-ray studies commonly used in supernova models. The presented new rate results in an increased Ti44 production in supernovae.

AB - The short-lived nuclide Ti44 is an important nuclide for the understanding of explosive nucleosynthesis. The main production reaction, Ca40(Î± ,Î)Ti44, has been studied in inverse kinematics with the recoil mass spectrometer DRAGON located at the TRIUMF-ISAC facility in Vancouver, Canada. The temperature range relevant for Î±-rich freeze-out during a core-collapse supernova has been covered entirely with a Ca40 beam of 0.60 to 1.15 MeV/nucleon. All relevant quantities for the calculation of the astrophysical reaction rate have been measured directly. Because of many previously undiscovered resonances, the reaction rate derived from the energy dependent Ti44 yield is higher than the one based on previous prompt Î-ray studies commonly used in supernova models. The presented new rate results in an increased Ti44 production in supernovae.

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VL - 76

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 3

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Measurement of the Ca40(Î±,Î)Ti44 reaction relevant for supernova nucleosynthesis

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