Direct Observation of Proton Emission in Be 11

Y. Ayyad; B. Olaizola; W. Mittig; G. Potel; V. Zelevinsky; M. Horoi; S. Beceiro-Novo; M. Alcorta; C. Andreoiu; T. Ahn; M. Anholm; L. Atar; A. Babu; D. Bazin; N. Bernier; S. S. Bhattacharjee; M. Bowry; R. Caballero-Folch; M. Cortesi; C. Dalitz; E. Dunling; A. B. Garnsworthy; M. Holl; B. Kootte; K. G. Leach; J. S. Randhawa; Y. Saito; C. Santamaria; P. Šiurytė; C. E. Svensson; R. Umashankar; N. Watwood; D. Yates

doi:10.1103/PhysRevLett.123.082501

Direct Observation of Proton Emission in Be 11

Y. Ayyad, B. Olaizola, W. Mittig, G. Potel, V. Zelevinsky, M. Horoi, S. Beceiro-Novo, M. Alcorta, C. Andreoiu, T. Ahn, M. Anholm, L. Atar, A. Babu, D. Bazin, N. Bernier, S. S. Bhattacharjee, M. Bowry, R. Caballero-Folch, M. Cortesi, C. DalitzE. Dunling, A. B. Garnsworthy, M. Holl, B. Kootte, K. G. Leach, J. S. Randhawa, Y. Saito, C. Santamaria, P. Šiurytė, C. E. Svensson, R. Umashankar, N. Watwood, D. Yates

Physics

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Abstract

The elusive β-p+ decay was observed in Be11 by directly measuring the emitted protons and their energy distribution for the first time with the prototype Active Target Time Projection Chamber in an experiment performed at ISAC-TRIUMF. The measured β-p+ branching ratio is orders of magnitude larger than any previous theoretical model predicted. This can be explained by the presence of a narrow resonance in B11 above the proton separation energy.

Original language	English
Article number	082501
Journal	Physical Review Letters
Volume	123
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.123.082501
State	Published - Aug 22 2019

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10.1103/PhysRevLett.123.082501

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Ayyad, Y., Olaizola, B., Mittig, W., Potel, G., Zelevinsky, V., Horoi, M., Beceiro-Novo, S., Alcorta, M., Andreoiu, C., Ahn, T., Anholm, M., Atar, L., Babu, A., Bazin, D., Bernier, N., Bhattacharjee, S. S., Bowry, M., Caballero-Folch, R., Cortesi, M., ... Yates, D. (2019). Direct Observation of Proton Emission in Be 11. Physical Review Letters, 123(8), [082501]. https://doi.org/10.1103/PhysRevLett.123.082501

@article{e05c9afb8c2d41a69c915c7c6f84610c,

title = "Direct Observation of Proton Emission in Be 11",

abstract = "The elusive β-p+ decay was observed in Be11 by directly measuring the emitted protons and their energy distribution for the first time with the prototype Active Target Time Projection Chamber in an experiment performed at ISAC-TRIUMF. The measured β-p+ branching ratio is orders of magnitude larger than any previous theoretical model predicted. This can be explained by the presence of a narrow resonance in B11 above the proton separation energy.",

author = "Y. Ayyad and B. Olaizola and W. Mittig and G. Potel and V. Zelevinsky and M. Horoi and S. Beceiro-Novo and M. Alcorta and C. Andreoiu and T. Ahn and M. Anholm and L. Atar and A. Babu and D. Bazin and N. Bernier and Bhattacharjee, {S. S.} and M. Bowry and R. Caballero-Folch and M. Cortesi and C. Dalitz and E. Dunling and Garnsworthy, {A. B.} and M. Holl and B. Kootte and Leach, {K. G.} and Randhawa, {J. S.} and Y. Saito and C. Santamaria and P. {\v S}iurytė and Svensson, {C. E.} and R. Umashankar and N. Watwood and D. Yates",

note = "Funding Information: The authors would like to thank the beam operators at ISAC-TRIUMF for their effort. They set up a new proton beam of the exact needed energy in a very short time, which turned out to be crucial for the successful outcome of the experiment. TRIUMF receives funding through a contribution agreement through the National Research Council Canada. This work was supported by the Natural Sciences and Engineering Research Council of Canada, by the DOE Office of Science (Grant No DE-SC-0017649 and FRIB Theory Alliance Award No DE-SC0013617) and by the U.S. National Science Foundation (NSF) under Cooperative Agreement No. PHY-1565546 and Grant No PHY-1713857. Y.-A. thanks S.-M. for the assistance and preparation of the cover image. Funding Information: The authors would like to thank the beam operators at ISAC-TRIUMF for their effort. They set up a new proton beam of the exact needed energy in a very short time, which turned out to be crucial for the successful outcome of the experiment. TRIUMF receives funding through a contribution agreement through the National Research Council Canada. This work was supported by the Natural Sciences and Engineering Research Council of Canada, by the DOE Office of Science (Grant No. DE-SC-0017649 and FRIB Theory Alliance Award No. DE-SC0013617) and by the U.S. National Science Foundation (NSF) under Cooperative Agreement No. PHY-1565546 and Grant No. PHY-1713857. Y. A. thanks S. M. for the assistance and preparation of the cover image. Publisher Copyright: {\textcopyright} 2019 American Physical Society.",

year = "2019",

month = aug,

day = "22",

doi = "10.1103/PhysRevLett.123.082501",

language = "English",

volume = "123",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "Physical Review Letters",

number = "8",

}

Ayyad, Y, Olaizola, B, Mittig, W, Potel, G, Zelevinsky, V, Horoi, M, Beceiro-Novo, S, Alcorta, M, Andreoiu, C, Ahn, T, Anholm, M, Atar, L, Babu, A, Bazin, D, Bernier, N, Bhattacharjee, SS, Bowry, M, Caballero-Folch, R, Cortesi, M, Dalitz, C, Dunling, E, Garnsworthy, AB, Holl, M, Kootte, B, Leach, KG, Randhawa, JS, Saito, Y, Santamaria, C, Šiurytė, P, Svensson, CE, Umashankar, R, Watwood, N & Yates, D 2019, 'Direct Observation of Proton Emission in Be 11', Physical Review Letters, vol. 123, no. 8, 082501. https://doi.org/10.1103/PhysRevLett.123.082501

TY - JOUR

T1 - Direct Observation of Proton Emission in Be 11

AU - Ayyad, Y.

AU - Olaizola, B.

AU - Mittig, W.

AU - Potel, G.

AU - Zelevinsky, V.

AU - Horoi, M.

AU - Beceiro-Novo, S.

AU - Alcorta, M.

AU - Andreoiu, C.

AU - Ahn, T.

AU - Anholm, M.

AU - Atar, L.

AU - Babu, A.

AU - Bazin, D.

AU - Bernier, N.

AU - Bhattacharjee, S. S.

AU - Bowry, M.

AU - Caballero-Folch, R.

AU - Cortesi, M.

AU - Dalitz, C.

AU - Dunling, E.

AU - Garnsworthy, A. B.

AU - Holl, M.

AU - Kootte, B.

AU - Leach, K. G.

AU - Randhawa, J. S.

AU - Saito, Y.

AU - Santamaria, C.

AU - Šiurytė, P.

AU - Svensson, C. E.

AU - Umashankar, R.

AU - Watwood, N.

AU - Yates, D.

N1 - Funding Information: The authors would like to thank the beam operators at ISAC-TRIUMF for their effort. They set up a new proton beam of the exact needed energy in a very short time, which turned out to be crucial for the successful outcome of the experiment. TRIUMF receives funding through a contribution agreement through the National Research Council Canada. This work was supported by the Natural Sciences and Engineering Research Council of Canada, by the DOE Office of Science (Grant No DE-SC-0017649 and FRIB Theory Alliance Award No DE-SC0013617) and by the U.S. National Science Foundation (NSF) under Cooperative Agreement No. PHY-1565546 and Grant No PHY-1713857. Y.-A. thanks S.-M. for the assistance and preparation of the cover image. Funding Information: The authors would like to thank the beam operators at ISAC-TRIUMF for their effort. They set up a new proton beam of the exact needed energy in a very short time, which turned out to be crucial for the successful outcome of the experiment. TRIUMF receives funding through a contribution agreement through the National Research Council Canada. This work was supported by the Natural Sciences and Engineering Research Council of Canada, by the DOE Office of Science (Grant No. DE-SC-0017649 and FRIB Theory Alliance Award No. DE-SC0013617) and by the U.S. National Science Foundation (NSF) under Cooperative Agreement No. PHY-1565546 and Grant No. PHY-1713857. Y. A. thanks S. M. for the assistance and preparation of the cover image. Publisher Copyright: © 2019 American Physical Society.

PY - 2019/8/22

Y1 - 2019/8/22

N2 - The elusive β-p+ decay was observed in Be11 by directly measuring the emitted protons and their energy distribution for the first time with the prototype Active Target Time Projection Chamber in an experiment performed at ISAC-TRIUMF. The measured β-p+ branching ratio is orders of magnitude larger than any previous theoretical model predicted. This can be explained by the presence of a narrow resonance in B11 above the proton separation energy.

AB - The elusive β-p+ decay was observed in Be11 by directly measuring the emitted protons and their energy distribution for the first time with the prototype Active Target Time Projection Chamber in an experiment performed at ISAC-TRIUMF. The measured β-p+ branching ratio is orders of magnitude larger than any previous theoretical model predicted. This can be explained by the presence of a narrow resonance in B11 above the proton separation energy.

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U2 - 10.1103/PhysRevLett.123.082501

DO - 10.1103/PhysRevLett.123.082501

M3 - Article

C2 - 31491233

AN - SCOPUS:85071896773

SN - 0031-9007

VL - 123

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

M1 - 082501

ER -

Direct Observation of Proton Emission in Be 11

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