First Direct Measurement of an Astrophysical p -Process Reaction Cross Section Using a Radioactive Ion Beam

G. Lotay; S. A. Gillespie; M. Williams; T. Rauscher; M. Alcorta; A. M. Amthor; C. A. Andreoiu; D. Baal; G. C. Ball; S. S. Bhattacharjee; H. Behnamian; V. Bildstein; C. Burbadge; W. N. Catford; D. T. Doherty; N. E. Esker; F. H. Garcia; A. B. Garnsworthy; G. Hackman; S. Hallam; K. A. Hudson; S. Jazrawi; E. Kasanda; A. R.L. Kennington; Y. H. Kim; A. Lennarz; R. S. Lubna; C. R. Natzke; N. Nishimura; B. Olaizola; C. Paxman; A. Psaltis; C. E. Svensson; J. Williams; B. Wallis; D. Yates; D. Walter; B. Davids

doi:10.1103/PhysRevLett.127.112701

First Direct Measurement of an Astrophysical p -Process Reaction Cross Section Using a Radioactive Ion Beam

G. Lotay, S. A. Gillespie, M. Williams, T. Rauscher, M. Alcorta, A. M. Amthor, C. A. Andreoiu, D. Baal, G. C. Ball, S. S. Bhattacharjee, H. Behnamian, V. Bildstein, C. Burbadge, W. N. Catford, D. T. Doherty, N. E. Esker, F. H. Garcia, A. B. Garnsworthy, G. Hackman, S. HallamK. A. Hudson, S. Jazrawi, E. Kasanda, A. R.L. Kennington, Y. H. Kim, A. Lennarz, R. S. Lubna, C. R. Natzke, N. Nishimura, B. Olaizola, C. Paxman, A. Psaltis, C. E. Svensson, J. Williams, B. Wallis, D. Yates, D. Walter, B. Davids

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Abstract

We have performed the first direct measurement of the Rb83(p,γ) radiative capture reaction cross section in inverse kinematics using a radioactive beam of Rb83 at incident energies of 2.4 and 2.7A MeV. The measured cross section at an effective relative kinetic energy of Ecm=2.393 MeV, which lies within the relevant energy window for core collapse supernovae, is smaller than the prediction of statistical model calculations. This leads to the abundance of Sr84 produced in the astrophysical p process being higher than previously calculated. Moreover, the discrepancy of the present data with theoretical predictions indicates that further experimental investigation of p-process reactions involving unstable projectiles is clearly warranted.

Original language	English
Article number	112701
Journal	Physical Review Letters
Volume	127
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.127.112701
Publication status	Published - 10 Sept 2021
Externally published	Yes

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10.1103/PhysRevLett.127.112701

https://arxiv.org/pdf/2109.06775

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Lotay, G., Gillespie, S. A., Williams, M., Rauscher, T., Alcorta, M., Amthor, A. M., Andreoiu, C. A., Baal, D., Ball, G. C., Bhattacharjee, S. S., Behnamian, H., Bildstein, V., Burbadge, C., Catford, W. N., Doherty, D. T., Esker, N. E., Garcia, F. H., Garnsworthy, A. B., Hackman, G., ... Davids, B. (2021). First Direct Measurement of an Astrophysical p -Process Reaction Cross Section Using a Radioactive Ion Beam. Physical Review Letters, 127(11), Article 112701. https://doi.org/10.1103/PhysRevLett.127.112701

@article{3e85b9dab7534eee873f1298bdd8dc07,

title = "First Direct Measurement of an Astrophysical p -Process Reaction Cross Section Using a Radioactive Ion Beam",

abstract = "We have performed the first direct measurement of the Rb83(p,γ) radiative capture reaction cross section in inverse kinematics using a radioactive beam of Rb83 at incident energies of 2.4 and 2.7A MeV. The measured cross section at an effective relative kinetic energy of Ecm=2.393 MeV, which lies within the relevant energy window for core collapse supernovae, is smaller than the prediction of statistical model calculations. This leads to the abundance of Sr84 produced in the astrophysical p process being higher than previously calculated. Moreover, the discrepancy of the present data with theoretical predictions indicates that further experimental investigation of p-process reactions involving unstable projectiles is clearly warranted.",

author = "G. Lotay and Gillespie, {S. A.} and M. Williams and T. Rauscher and M. Alcorta and Amthor, {A. M.} and Andreoiu, {C. A.} and D. Baal and Ball, {G. C.} and Bhattacharjee, {S. S.} and H. Behnamian and V. Bildstein and C. Burbadge and Catford, {W. N.} and Doherty, {D. T.} and Esker, {N. E.} and Garcia, {F. H.} and Garnsworthy, {A. B.} and G. Hackman and S. Hallam and Hudson, {K. A.} and S. Jazrawi and E. Kasanda and Kennington, {A. R.L.} and Kim, {Y. H.} and A. Lennarz and Lubna, {R. S.} and Natzke, {C. R.} and N. Nishimura and B. Olaizola and C. Paxman and A. Psaltis and Svensson, {C. E.} and J. Williams and B. Wallis and D. Yates and D. Walter and B. Davids",

note = "Funding Information: The authors acknowledge the generous support of the Natural Sciences and Engineering Research Council of Canada. TRIUMF receives federal funding via a contribution agreement through the National Research Council of Canada. The GRIFFIN infrastructure was funded jointly by the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the British Columbia Knowledge Development Fund, TRIUMF, and the University of Guelph. UK personnel were supported by the Science and Technologies Facilities Council (STFC). T. R. acknowledges support by the European COST action “ChETEC{"} (Grant No. CA16117). N. N. acknowledges support by JSPS KAKENHI (Grants No. 19H00693, No. 21H01087). Publisher Copyright: {\textcopyright} 2021 American Physical Society.",

year = "2021",

month = sep,

day = "10",

doi = "10.1103/PhysRevLett.127.112701",

language = "English",

volume = "127",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society (APS)",

number = "11",

}

Lotay, G, Gillespie, SA, Williams, M, Rauscher, T, Alcorta, M, Amthor, AM, Andreoiu, CA, Baal, D, Ball, GC, Bhattacharjee, SS, Behnamian, H, Bildstein, V, Burbadge, C, Catford, WN, Doherty, DT, Esker, NE, Garcia, FH, Garnsworthy, AB, Hackman, G, Hallam, S, Hudson, KA, Jazrawi, S, Kasanda, E, Kennington, ARL, Kim, YH, Lennarz, A, Lubna, RS, Natzke, CR, Nishimura, N, Olaizola, B, Paxman, C, Psaltis, A, Svensson, CE, Williams, J, Wallis, B, Yates, D, Walter, D & Davids, B 2021, 'First Direct Measurement of an Astrophysical p -Process Reaction Cross Section Using a Radioactive Ion Beam', Physical Review Letters, vol. 127, no. 11, 112701. https://doi.org/10.1103/PhysRevLett.127.112701

TY - JOUR

T1 - First Direct Measurement of an Astrophysical p -Process Reaction Cross Section Using a Radioactive Ion Beam

AU - Lotay, G.

AU - Gillespie, S. A.

AU - Williams, M.

AU - Rauscher, T.

AU - Alcorta, M.

AU - Amthor, A. M.

AU - Andreoiu, C. A.

AU - Baal, D.

AU - Ball, G. C.

AU - Bhattacharjee, S. S.

AU - Behnamian, H.

AU - Bildstein, V.

AU - Burbadge, C.

AU - Catford, W. N.

AU - Doherty, D. T.

AU - Esker, N. E.

AU - Garcia, F. H.

AU - Garnsworthy, A. B.

AU - Hackman, G.

AU - Hallam, S.

AU - Hudson, K. A.

AU - Jazrawi, S.

AU - Kasanda, E.

AU - Kennington, A. R.L.

AU - Kim, Y. H.

AU - Lennarz, A.

AU - Lubna, R. S.

AU - Natzke, C. R.

AU - Nishimura, N.

AU - Olaizola, B.

AU - Paxman, C.

AU - Psaltis, A.

AU - Svensson, C. E.

AU - Williams, J.

AU - Wallis, B.

AU - Yates, D.

AU - Walter, D.

AU - Davids, B.

N1 - Funding Information: The authors acknowledge the generous support of the Natural Sciences and Engineering Research Council of Canada. TRIUMF receives federal funding via a contribution agreement through the National Research Council of Canada. The GRIFFIN infrastructure was funded jointly by the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the British Columbia Knowledge Development Fund, TRIUMF, and the University of Guelph. UK personnel were supported by the Science and Technologies Facilities Council (STFC). T. R. acknowledges support by the European COST action “ChETEC" (Grant No. CA16117). N. N. acknowledges support by JSPS KAKENHI (Grants No. 19H00693, No. 21H01087). Publisher Copyright: © 2021 American Physical Society.

PY - 2021/9/10

Y1 - 2021/9/10

N2 - We have performed the first direct measurement of the Rb83(p,γ) radiative capture reaction cross section in inverse kinematics using a radioactive beam of Rb83 at incident energies of 2.4 and 2.7A MeV. The measured cross section at an effective relative kinetic energy of Ecm=2.393 MeV, which lies within the relevant energy window for core collapse supernovae, is smaller than the prediction of statistical model calculations. This leads to the abundance of Sr84 produced in the astrophysical p process being higher than previously calculated. Moreover, the discrepancy of the present data with theoretical predictions indicates that further experimental investigation of p-process reactions involving unstable projectiles is clearly warranted.

AB - We have performed the first direct measurement of the Rb83(p,γ) radiative capture reaction cross section in inverse kinematics using a radioactive beam of Rb83 at incident energies of 2.4 and 2.7A MeV. The measured cross section at an effective relative kinetic energy of Ecm=2.393 MeV, which lies within the relevant energy window for core collapse supernovae, is smaller than the prediction of statistical model calculations. This leads to the abundance of Sr84 produced in the astrophysical p process being higher than previously calculated. Moreover, the discrepancy of the present data with theoretical predictions indicates that further experimental investigation of p-process reactions involving unstable projectiles is clearly warranted.

UR - http://www.scopus.com/inward/record.url?scp=85114896490&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.127.112701

DO - 10.1103/PhysRevLett.127.112701

M3 - Article

AN - SCOPUS:85114896490

SN - 0031-9007

VL - 127

JO - Physical Review Letters

JF - Physical Review Letters

IS - 11

M1 - 112701

ER -

First Direct Measurement of an Astrophysical p -Process Reaction Cross Section Using a Radioactive Ion Beam

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