Direct Observation of Proton Emission in Be11

Ayyad, Y.; Olaizola, B.; Mittig, W.; Potel, Gregory Aguilar; 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.; Bowry, M.; Cortesi, M.; Dalitz, C.; Dunling, E.; Garnsworthy, A. B.; Holl, M.; Kootte, B.; Leach, K. G.; Randhawa, J. S.; Saito, Y.; Santamaria, C.; Šiurytė, P.; Svensson, C. E.; Umashankar, R.; Watwood, N.; Yates, D.

doi:10.1103/PhysRevLett.123.082501

Title: Direct Observation of Proton Emission in ${}^{11}{Be}$

Journal Article · 22 August 2019 · Physical Review Letters

DOI: https://doi.org/10.1103/PhysRevLett.123.082501 · OSTI ID:1606205

Ayyad, Y. ^[1]; Olaizola, B. ^[2]; Mittig, W. ^[1]; Potel, Gregory Aguilar ^[3]; Zelevinsky, V. ^[1]; Horoi, M. ^[4]; Beceiro-Novo, S. ^[1]; Alcorta, M. ^[2]; Andreoiu, C. ^[5]; Ahn, T. ^[6]; Anholm, M. ^[7]; Atar, L. ^[8]; Babu, A. ^[2]; Bazin, D. ^[1]; Bernier, N. ^[9]; Bhattacharjee, S. S. ^[2]; Bowry, M. ^[2]; Bowry, M. ^[2]; Cortesi, M. ^[1]; Dalitz, C. ^[10] more »

Michigan State Univ., East Lansing, MI (United States)
TRIUMF, Vancouver, BC (Canada)
Michigan State Univ., East Lansing, MI (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Central Michigan Univ., Mount Pleasant, MI (United States)
Simon Fraser Univ., Burnaby, BC (Canada)
Univ. of Notre Dame, IN (United States)
TRIUMF, Vancouver, BC (Canada); Univ. of Manitoba, Winnipeg (Canada)
Univ. of Guelph, ON (Canada)
TRIUMF, Vancouver, BC (Canada); Univ. of British Columbia, Vancouver, BC (Canada)
Niederrhein Univ. of Applied Sciences (Germany)
TRIUMF, Vancouver, BC (Canada); Univ. of York (United Kingdom)
TRIUMF, Vancouver, BC (Canada); Saint Marys Univ., Halifax, NS (Canada)
Colorado School of Mines, Golden, CO (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
TRIUMF, Vancouver, BC (Canada); Univ. of Surrey, Guildford (United Kingdom)

The rare $β^{-} p^{+}$ decay was observed in ${}_{11}{Be}$ 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 other theoretical model predicted. This can be explained by the presence of a narrow resonance in ${}_{11}B$ above the proton separation energy.

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Research Organization:: Michigan State Univ., East Lansing, MI (United States); Colorado School of Mines, Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); National Research Council Canada; Natural Sciences and Engineering Research Council of Canada (NSERC); National Science Foundation (NSF)

Grant/Contract Number:: SC0013617; SC0017649; PHY-1565546

OSTI ID:: 1606205

Alternate ID(s):: OSTI ID: 1558703

Journal Information:: Physical Review Letters, Vol. 123, Issue 8; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 30 works

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References (23)

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Title: Direct Observation of Proton Emission in ${}^{11}{Be}$